1

                    INFORMATION REQUIRED IN PROXY STATEMENT
                            SCHEDULE 14A INFORMATION

          PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES
                    EXCHANGE ACT OF 1934 (AMENDMENT NO.   )

Filed by the Registrant [X]

Filed by a Party other than the Registrant [ ]

Check the appropriate box:



                                            
[ ]  Preliminary Proxy Statement               [ ]  Confidential, for Use of the Commission
                                               Only (as permitted by Rule 14a-6(e)(2))
[X]  Definitive Proxy Statement
[ ]  Definitive Additional Materials
[ ]  Soliciting Material Pursuant to sec.240.14a-12



                              SILICON GAMING, INC.
- --------------------------------------------------------------------------------
                (Name of Registrant as Specified In Its Charter)

Payment of Filing Fee (Check the appropriate box):

[ ]  No filing fee required.


[ ]  Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.


     (1)  Title of each class of securities to which transaction applies:

        Common Stock, $.001 par value per share.
        ------------------------------------------------------------------------

     (2)  Aggregate number of securities to which transaction applies:

        285,355,592
        ------------------------------------------------------------------------

     (3)  Per unit price or other underlying value of transaction computed
          pursuant to Exchange Act Rule 0-11 (Set forth the amount on which the
          filing fee is calculated and state how it was determined):

        $45,000,000 (Rule 0-11(c)(1))
        ------------------------------------------------------------------------

     (4)  Proposed maximum aggregate value of transaction:

        $45,000,000
        ------------------------------------------------------------------------

     (5)  Total fee paid:

        $9,000
        ------------------------------------------------------------------------

[X]  Fee paid previously with preliminary materials.

[ ]  Check box if any part of the fee is offset as provided by Exchange Act Rule
     0-11(a)(2) and identify the filing for which the offsetting fee was paid
     previously. Identify the previous filing by registration statement number,
     or the Form or Schedule and the date of its filing.

     (1)  Amount Previously Paid:

        ------------------------------------------------------------------------

     (2)  Form, Schedule or Registration Statement No.:

        ------------------------------------------------------------------------

     (3)  Filing Party:

        ------------------------------------------------------------------------

     (4)  Date Filed:

        ------------------------------------------------------------------------
   2

                              SILICON GAMING, INC.
                             2800 W. BAYSHORE ROAD
                          PALO ALTO, CALIFORNIA 94303


                                                                February 3, 2001

Dear Stockholders:


     You are cordially invited to attend a special meeting of stockholders of
Silicon Gaming, Inc. to be held on February 27, 2001 at 9:00 a.m. local time, at
the company's headquarters at 2800 West Bayshore Road, Palo Alto, California
94303.



     At this special meeting, you will be asked to consider and vote to approve
an Agreement and Plan of Merger (the "Merger Agreement") pursuant to which
Silicon will merge with a subsidiary of International Game Technology. Under the
Merger Agreement, each outstanding share of Silicon's outstanding common stock
will be converted into the right to receive cash, without interest. You will
receive cash for each share of Silicon common stock you own. The amount of cash
you will receive is dependent on various factors discussed in this proxy
statement under the caption "The Merger Agreement-Merger Consideration." Silicon
anticipates that the cash proceeds per share will be between $0.0825 and
$0.1025. As part of the proposed transaction, Silicon has agreed that prior to
the closing of the proposed merger, it will dispose of its shares of WagerWorks,
Inc. ("WagerWorks"), a majority-owned subsidiary of Silicon, other than a number
of shares that would equal 4.9% of WagerWorks on a fully-diluted basis. We
evaluated various options regarding the disposition of these shares, including
approaching potential purchasers to solicit their interest in purchasing these
shares. B III Capital Partners L.P., an investor in and creditor of Silicon, and
an investor in WagerWorks, and Carl Berg, an individual who is a creditor of the
company and an investor in WagerWorks, have verbally agreed to purchase these
shares of WagerWorks for $6,000,000. As of February 3, 2001, we had not yet
entered into a definitive agreement for the sale of these shares of WagerWorks
and cannot be certain that we will do so. We have engaged US Bancorp Libra, an
investment banking firm, to render an opinion that the purchase price for the
shares of WagerWorks is fair to the equity holders of the company from a
financial point of view. The estimated range of merger consideration proceeds
per-share of common stock would be $0.1025 to $0.1225 assuming the shares of
WagerWorks are sold for $6,000,000. WagerWorks is a privately held company and
there is no trading market for its shares.



     The board of directors of Silicon has approved the Merger Agreement. The
board of directors believes that the merger is fair to, and in the best
interests of, Silicon's stockholders and unanimously recommends that the
stockholders vote for approval of the Merger Agreement. US Bancorp Libra, an
investment banking firm, has advised the board of directors that the merger
consideration is fair to the equity holders of Silicon, taken as a whole, from a
financial point of view.


     We cannot complete the merger unless we obtain the approval of Silicon's
stockholders owning at least a majority of each of Silicon's outstanding classes
of capital stock and unless we obtain the necessary regulatory approvals
described in the enclosed proxy statement. Completion of the merger is also
subject to the satisfaction of several conditions. Accordingly, even if the
stockholders approve and adopt the Merger Agreement, there can be no assurance
that the merger will be completed.

     We encourage you to read the entire document carefully. The proxy statement
provides detailed information about the merger we are proposing and provides
specific information about the parties involved and their interests. A copy of
the Merger Agreement is attached as Annex A to the proxy statement.

     Your vote is very important. Whether or not you plan to attend the special
meeting, please take the time to vote by completing and mailing the enclosed
proxy card to us. A prepaid return envelope is provided for this purpose. If you
date and mail your proxy card without indicating how you want to vote, your
proxy will be counted as a vote "for" adoption of the Merger Agreement. If you
do not return your card or instruct your broker how to vote any shares held for
you in your broker's name, the effect will be a vote against the Merger
Agreement. You may revoke your proxy at any time before it is exercised and it
will not be used if you attend the meeting and elect to vote in person. Your
board of directors and I urge all stockholders to be present in person or by
proxy.
   3

     PLEASE COMPLETE, SIGN, DATE AND PROMPTLY RETURN YOUR PROXY CARD IN THE
ENCLOSED ENVELOPE.

                                          Sincerely,

                                          /s/ Andrew S. Pascal
                                          ANDREW S. PASCAL
                                          Chairman of the Board,
                                          President and Chief Executive Officer


     Proxy Statement dated February 3, 2001 and first mailed to stockholders on
or about February 6, 2001.

   4

                              SILICON GAMING, INC.
                             2800 W. BAYSHORE ROAD
                          PALO ALTO, CALIFORNIA 94303
                            ------------------------

                   NOTICE OF SPECIAL MEETING OF STOCKHOLDERS

                        TO BE HELD ON FEBRUARY 27, 2001


To the Stockholders of Silicon Gaming, Inc.:


     NOTICE IS HEREBY GIVEN that a special meeting of stockholders of Silicon
Gaming, Inc., a California corporation, will be held on February 27, 2001, at
9:00 a.m., local time, at Silicon's principal executive offices located at 2800
W. Bayshore Road, Palo Alto, California 94303, for the following purposes:



          1. To consider and vote on a proposal recommended by the board of
     directors of Silicon to approve and adopt an Agreement and Plan of Merger
     (the "Merger Agreement"), dated as of December 19, 2000, by and among
     Silicon, International Game Technology, a Nevada corporation ("IGT"), and
     International Game Acquisition Corporation, a California corporation and a
     wholly-owned subsidiary of IGT, as a result of which each outstanding share
     of common stock, par value $.001 per share, of Silicon will be converted,
     upon the effectiveness of the merger, into the right to receive cash,
     without interest, with the amount of such cash payment to be determined in
     accordance with the Merger Agreement.


          2. To transact such other business as may properly come before the
     meeting or any adjournment or adjournments thereof.


     Only stockholders of record at the close of business on February 2, 2001
are entitled to notice of and to vote at the meeting. All stockholders are
cordially invited to attend the meeting in person. However, to assure your
representation at the meeting, you are urged to sign and return the enclosed
Proxy as promptly as possible in the envelope enclosed. Any stockholder
attending the meeting may vote in person even if he or she has previously
returned a Proxy.


                                          Sincerely,

                                          /s/ Andrew S. Pascal
                                          ANDREW S. PASCAL
                                          Chairman of the Board,
                                          President and Chief Executive Officer

Palo Alto, California

February 3, 2001


     YOUR VOTE IS VERY IMPORTANT, REGARDLESS OF THE NUMBER OF SHARES YOU OWN.
PLEASE READ THE ATTACHED PROXY STATEMENT CAREFULLY, AND COMPLETE, SIGN AND DATE
THE ENCLOSED PROXY CARD AS PROMPTLY AS POSSIBLE AND RETURN IT IN THE ENCLOSED
ENVELOPE.
   5

                               TABLE OF CONTENTS



                                                             
QUESTIONS AND ANSWERS.......................................      1
SUMMARY.....................................................      3
  THE COMPANIES.............................................      3
  THE MERGER................................................      3
  RECOMMENDATION OF THE BOARD OF DIRECTORS..................      4
  OPINION OF FINANCIAL ADVISOR..............................      4
  THE SPECIAL MEETING.......................................      4
  RECORD DATE; VOTE REQUIRED................................      4
  VOTING AGREEMENTS.........................................      4
  CONDITIONS TO COMPLETION OF THE MERGER....................      5
  REGULATORY MATTERS........................................      5
  TERMINATION OF THE MERGER AGREEMENT; TERMINATION FEES AND
     EXPENSES...............................................      5
  MATERIAL FEDERAL INCOME TAX CONSEQUENCES..................      6
  INTERESTS OF CERTAIN PERSONS IN THE MERGER................      6
  DISSENTERS' APPRAISAL RIGHTS..............................      7
  THE SPECIAL MEETING.......................................      8
  GENERAL...................................................      8
  TIME AND PLACE............................................      8
  MATTERS TO BE CONSIDERED..................................      8
  PROXIES...................................................      8
  SOLICITATION OF PROXIES...................................      8
  RECORD DATE, VOTING AND SHARE OWNERSHIP...................      9
THE MERGER..................................................      9
  PARTIES TO THE MERGER.....................................     10
  BACKGROUND OF THE MERGER..................................     10
  REASONS FOR THE MERGER; RECOMMENDATION OF SILICON BOARD...     12
  OPINION OF FINANCIAL ADVISOR..............................     13
  REGULATORY MATTERS........................................     15
  MATERIAL FEDERAL INCOME TAX CONSEQUENCES TO SILICON
     STOCKHOLDERS...........................................     16
  INTERESTS OF CERTAIN PERSONS IN THE MERGER................     17
  DISSENTERS RIGHTS.........................................     19
THE MERGER AGREEMENT........................................     21
  FORM OF MERGER............................................     21
  MERGER CONSIDERATION......................................     21
  EFFECTIVE TIME............................................     24
  EXCHANGE PROCEDURES.......................................     24
  REPRESENTATIONS AND WARRANTIES............................     24
  COVENANTS.................................................     25
  CONDITIONS TO CONSUMMATION OF THE MERGER..................     32



                                        i
   6


                                                             
  TERMINATION OF THE MERGER AGREEMENT.......................     33
  VOTING AGREEMENTS.........................................     35
  MARKET PRICE OF SILICON COMMON STOCK......................     36
  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND
     MANAGEMENT.............................................     37
  OTHER STOCKHOLDERS MEETINGS...............................     38
  WHERE YOU CAN FIND MORE INFORMATION.......................     38
  FORWARD LOOKING STATEMENT MAY PROVE INACCURATE............     38
  OTHER MATTERS.............................................     39

Annex A -- Agreement and Plan of Merger
Annex B -- Fairness Opinion
Annex C -- California General Corporation Law Sections
  1300-1312



                                       ii
   7

                             QUESTIONS AND ANSWERS

Q:  WHAT IS THE PROPOSED TRANSACTION?

A:  The board of directors of Silicon is proposing to merge the company with a
    wholly-owned subsidiary of International Game Technology ("IGT"). IGT has
    formed a subsidiary, International Game Acquisition Corporation, for the
    sole purpose of consummating the merger. If the merger is consummated,
    International Game Acquisition Corporation will merge with and into Silicon
    and Silicon will be the surviving corporation. Silicon stockholders will
    receive cash for their shares of common stock of Silicon and IGT will be the
    sole stockholder of the surviving corporation.

Q:  WHAT WILL I RECEIVE IN THE MERGER?


A:  You will receive cash for each share of Silicon common stock you own. The
    amount of cash you will receive is dependent on various factors discussed in
    this proxy statement under the caption "The Merger Agreement-Merger
    Consideration." Silicon anticipates that the cash proceeds per-share of
    common stock will be between $0.0825 and $0.1025. As part of the proposed
    transaction, Silicon has agreed that prior to the closing of the proposed
    merger, it will dispose of its shares of WagerWorks, Inc. ("WagerWorks"), a
    majority-owned subsidiary of Silicon, other than a number of shares that
    would equal 4.9% of WagerWorks on a fully-diluted basis. We evaluated
    various options regarding the disposition of these shares, including
    approaching potential purchasers to solicit their interest in purchasing
    these shares. B III Capital Partners L.P. ("B III") an investor in and
    creditor of Silicon, and an investor in WagerWorks, and Carl Berg, an
    individual who is a creditor of the company and an investor in WagerWorks,
    have verbally agreed to purchase these shares of WagerWorks for $6,000,000.
    As of February 3, 2001, we had not yet entered into a definitive agreement
    for the sale of these shares of WagerWorks and cannot be certain that we
    will do so. We have engaged US Bancorp Libra, an investment banking firm, to
    render an opinion that the purchase price for the shares of WagerWorks is
    fair to the equity holders of the company from a financial point of view.
    The estimated range of merger consideration proceeds per-share of common
    stock would be $0.1025 to $0.1225 assuming the shares of WagerWorks are sold
    for $6,000,000. WagerWorks is a privately held company and there is no
    trading market for its shares.


Q:  WHAT DO I NEED TO DO NOW?

A:  Just indicate on your proxy card how you want to vote, sign it and mail it
    in the enclosed return envelope as soon as possible, so that your shares may
    be represented at the special meeting.

Q:  SHOULD I SEND IN MY SHARE CERTIFICATES NOW?

A:  No. After the merger is complete, we will send you written instructions for
    transmitting your share certificates for payment.

Q:  IF MY SHARES ARE HELD IN "STREET NAME" BY MY BROKER, WILL MY BROKER VOTE MY
    SHARES FOR ME?

A:  Your broker will vote your shares only if you provide instructions on how to
    vote. You should follow the directions provided by your broker regarding how
    to instruct your broker to vote your shares.

Q:  MAY I CHANGE MY VOTE AFTER I HAVE MAILED MY SIGNED PROXY CARD?

A:  Yes. You may revoke your proxy or change your vote by sending a notice to
    the secretary of Silicon, by sending in a later-dated, signed proxy card
    before the special meeting to Silicon Gaming, Inc., 2800 West Bayshore Road,
    Palo Alto, California 94303, or by attending the special meeting and voting
    in person.

Q:  DO I HAVE DISSENTERS' RIGHTS?

A:  Yes. Under California law, stockholders have dissenters' rights in
    connection with the merger. See "The Merger-Dissenter's Appraisal Rights."

                                        1
   8

Q:  WHEN DO YOU EXPECT THE MERGER TO BE COMPLETED?


A:  We are working toward completing the merger as quickly as possible. We
    expect to complete the merger during the first or second calendar quarters
    of 2001. Completion of the merger is subject to a number of conditions,
    including the disposition of WagerWorks and approval from applicable gaming
    authorities.


Q:  WILL I RECOGNIZE GAIN OR LOSS ON THE TRANSACTION?

A:  Yes. If the merger is completed, you will recognize gain or loss for federal
    income tax purposes. You are urged to consult your own tax advisor to
    determine your particular tax consequences.

Q:  WHAT OTHER MATTERS WILL BE VOTED ON AT THE SPECIAL MEETING?

A:  We do not expect to ask you to vote on any other matters at the special
    meeting.

                       WHO CAN HELP ANSWER YOUR QUESTIONS

     If you have more questions about the merger or, if you would like
additional copies of this document, you should contact:

                              Silicon Gaming, Inc.
                             2800 W. Bayshore Road
                          Palo Alto, California 94303
                         Attention: Investor Relations
                          Phone Number: (650) 842-9000

     NO PERSON IS AUTHORIZED TO GIVE ANY INFORMATION OR MAKE ANY REPRESENTATION
NOT CONTAINED OR INCORPORATED IN THIS DOCUMENT, AND IF GIVEN OR MADE, THAT
INFORMATION OR REPRESENTATION SHOULD NOT BE RELIED UPON AS HAVING BEEN
AUTHORIZED. THE DELIVERY OF THIS DOCUMENT DOES NOT IMPLY THAT THERE HAS BEEN NO
CHANGE IN THE INFORMATION SET FORTH IN THIS DOCUMENT OR IN THE AFFAIRS OF
SILICON OR IGT SINCE THE DATE OF THIS DOCUMENT.

                                        2
   9

                                    SUMMARY


     This brief summary highlights selected information from the proxy statement
but may not contain all of the information that is important to you. We have
included page references parenthetically to direct you to a more complete
description of each topic presented in this summary. We urge you to carefully
read this entire document, the annexed documents and the other available
information referred to in "WHERE YOU CAN FIND MORE INFORMATION" (Page 37).



THE COMPANIES


     Silicon Gaming, Inc.
     2800 W. Bayshore Road
     Palo Alto, California 94303
     (650) 842-9000

     Silicon Gaming, Inc. a California corporation, is engaged in the design,
development, production, marketing and sale of interactive, software-based
products for the gaming industry.

     At September 30, 2000, our total assets were $15.7 million and we had an
accumulated deficit of $100.1 million and a shareholder's deficiency of $13.6
million. Our total revenue for fiscal 1999 was $17.1 million and our total
revenue for the nine-month period ended September 30, 2000 was $10.9 million.

     International Game Technology
     9295 Prototype Drive
     Reno, Nevada 89511
     (702) 448-7777

     International Game Technology, which we refer to as IGT, is a world leader
in the design, development and manufacture of microprocessor-based gaming
products and software systems in all jurisdictions where gaming is legal.

     At September 30, 2000, IGT's total assets were $1.623 billion and its total
stockholder's equity was $96.585 million. Its total revenue for fiscal 2000,
which ended September 30, 1999, was $1.004 billion.


THE MERGER (PAGE 9)


     We propose a merger in which Silicon will become a wholly-owned subsidiary
of IGT. On completion of the merger, each of your shares of Silicon common stock
will automatically become the right to receive cash, without interest.


     The amount of cash you will receive is dependent on various factors
discussed in this proxy statement under the caption "The Merger Agreement-Merger
Consideration." Silicon anticipates that the cash proceeds per-share of common
stock will be between $0.0825 to $0.1025. As part of the proposed transaction,
Silicon has agreed that prior to the closing of the proposed merger, it will
dispose of its shares of WagerWorks, Inc. ("WagerWorks"), a majority-owned
subsidiary of Silicon, other than a number of shares that would equal 4.9% of
WagerWorks on a fully-diluted basis. We evaluated various options regarding the
disposition of these shares, including approaching potential purchasers to
solicit their interest in purchasing these shares. B III, an investor in and
creditor of Silicon, and an investor in WagerWorks, and Carl Berg, an individual
who is a creditor of the company and an investor in WagerWorks, have verbally
agreed to purchase these shares of WagerWorks for $6,000,000. As of February 3,
2001, we had not yet entered into a definitive agreement for the sale of these
shares of WagerWorks and cannot be certain that we will do so. We have engaged
US Bancorp Libra, an investment banking firm, to render an opinion that the
purchase price for the shares of WagerWorks is fair to the equity holders of the
company from a financial point of view. The estimated range of merger
consideration proceeds per-share of common stock would be $0.1025 to $0.1225
assuming the shares of WagerWorks are sold for $6,000,000. WagerWorks is a
privately held company and there is no trading market for its shares.


                                        3
   10

     We have attached the Merger Agreement to this document as Annex A. Please
read the Merger Agreement. It is the legal document that governs the merger.


RECOMMENDATION OF THE BOARD OF DIRECTORS (PAGE 12)


     The board of directors of Silicon has determined that the terms of the
Merger Agreement, which were established through arm's length negotiations with
IGT, is fair to, and in the best interests of Silicon and its stockholders.
Accordingly, the board of directors has unanimously approved the Merger
Agreement and unanimously recommends that Silicon's stockholders vote FOR
approval and adoption of the Merger Agreement.


OPINION OF FINANCIAL ADVISOR (PAGE 13)



     U.S. Bancorp Libra, a division of U.S. Bancorp, Inc., our financial
advisor, delivered an opinion to Silicon's board of directors that, as of
December 7, 2000, the cash merger consideration was fair from a financial point
of view to the equity holders of Silicon taken as a whole. We have attached the
opinion as Annex B. This opinion does not constitute a recommendation as to how
any stockholder should vote on the Merger Agreement. You should read it
completely to understand the procedures followed, assumptions made, matters
considered and limitations of the review undertaken by US Bancorp Libra in
providing this opinion.



THE SPECIAL MEETING (PAGE 8)



     The special meeting of Silicon's stockholders will be held at 9.00 a.m.,
local time, on February 27, 2001, at the company's headquarters at 2800 W.
Bayshore Road, Palo Alto, California 94303. At the special meeting, you will be
asked to approve and adopt the Merger Agreement, and to act on any other matters
that are properly brought before the special meeting.



RECORD DATE; VOTE REQUIRED (PAGE 9)



     You may vote at the special meeting if you owned Silicon common stock at
the close of business on February 2, 2001. The approval and adoption of the
Merger Agreement requires the affirmative vote of the holders of at least a
majority of the outstanding shares of each class of Silicon's capital stock
entitled to vote at the special meeting. Accordingly, a failure to vote or an
abstention has the same effect as voting against the merger.


     You may vote your shares in person by attending the special meeting or by
mailing us your proxy if you are unable or do not wish to attend.


VOTING AGREEMENTS (PAGE 35)



     Two major holders of shares of our common stock, Andrew Pascal and Paul
Mathews have entered into voting agreements with IGT. Mr. Pascal is the
company's President and Chief Executive Officer. Mr. Mathews is the company's
Executive Vice President and Chief Operating Officer. Under the voting
agreements, both of the stockholders agreed to vote all of their Silicon common
stock in favor of the merger. These voting agreements will terminate if the
merger agreement is terminated. As of January 31, 2001, these two stockholders
collectively owned approximately 49.8% of our outstanding common stock
(excluding additional shares that may be acquired upon exercise of stock
options).



     In addition, B III has entered into a voting agreement with IGT. B III
holds 100% of the outstanding shares of Silicon's Series D Preferred Stock the
only series of preferred stock outstanding. Under the voting agreement, B III
agreed to vote all of its shares of Series D Preferred Stock and any other
shares of equity securities owned by it, in favor of, and to otherwise consent
to, the merger. In addition to its Series D Preferred Stock, B III owns 441,460
shares of our outstanding common stock. This voting agreement will terminate if
the Merger Agreement is terminated or the merger is not completed by May 30,
2001.


                                        4
   11

CONDITIONS TO COMPLETION OF THE MERGER

     Completion of the merger depends on a number of conditions being met,
including:

     - Silicon stockholder approval of the merger;

     - receipt of necessary regulatory approvals;

     - no temporary restraining order, preliminary or permanent injunction or
       other order, judgment or decree to restrain or prohibit the consummation
       of the merger or any other transaction described in the Merger Agreement
       shall have been issued and remain in effect;

     - there shall not have been instituted or pending, or threatened, any
       proceeding by any governmental entity as a result of the Merger Agreement
       or any of the transactions contemplated by the Merger Agreement if such
       governmental entity were to prevail, would reasonably be expected to have
       a material adverse effect on IGT or the surviving corporation;

     - all necessary or required gaming approvals from any gaming authorities
       shall have been received or obtained;

     - the representations and warranties of each of Silicon, IGT and
       International Game Acquisition Corporation set forth in the Merger
       Agreement shall be true and correct in all material respects as of the
       date the Merger Agreement is closed as if made at and as of such date,
       and each of Silicon, IGT and International Game Acquisition Corporation
       shall in all material respects have performed each obligation and
       complied with each covenant to be performed and complied with by it under
       the Merger Agreement;


     - Silicon will have completed the sale or disposition of its shares of
       WagerWorks, other than a number of shares representing 4.9% of the equity
       interest of WagerWorks;


     - Silicon shall have modified its license agreement dated August 3, 2000
       with Pearson Television, Inc., as required under Section 6.2(k) of the
       Merger Agreement; and

     - Silicon shall have modified its Cross License Agreement with WagerWorks
       as required under Section 6.2(n) of the Merger Agreement.


     - Either IGT or Silicon could choose to complete the merger even though a
       closing condition has not been satisfied, as long as applicable law
       allows it to do so. We cannot be certain when, or if, the conditions to
       the merger will be satisfied or waived, or that the merger will be
       completed.



REGULATORY MATTERS (PAGE 15)


     The merger cannot take place until the necessary regulatory approvals have
been received and any waiting periods required by law have expired. Silicon and
IGT have filed (or will promptly file) all of the required applications or
notices necessary to complete the merger with each of the applicable regulatory
authorities. We cannot be sure whether or when we will receive the regulatory
approvals or that we will obtain the approvals without conditions that would be
detrimental to Silicon or IGT.

     We cannot complete the merger unless gaming regulatory requirements are
complied with, and approvals obtained, in a number of jurisdictions in which
Silicon and IGT operate gaming activities.


TERMINATION OF THE MERGER AGREEMENT; TERMINATION FEES AND EXPENSES (PAGE 33)


     Silicon and IGT can mutually decide at any time to terminate the merger
agreement without completing the merger. Also, either Silicon or IGT can decide
to terminate the merger agreement in a number of situations, including the final
denial of regulatory approval or the failure to complete the merger by May 30,
2001.

     If either party terminates the Merger Agreement, under certain
circumstances, it will have to pay the other a termination fee. If Silicon
terminates the Merger Agreement under certain circumstances, it will have

                                        5
   12

to pay IGT up to $3.5 million. If IGT terminates the Merger Agreement under
certain circumstances, it will have to pay Silicon $2.5 million in addition to
the $2.5 million prepayment amount.

     Whether or not the merger is completed, the parties will each pay their own
fees and expenses.


MATERIAL FEDERAL INCOME TAX CONSEQUENCES (PAGE 16)


     The merger will be a taxable transaction to you.  You will recognize
taxable gain or loss in the merger in an amount determined by the difference
between the cash merger consideration received and your tax basis in Silicon's
common stock canceled for that cash payment. The gain or loss will be a capital
gain or loss if Silicon common stock is a capital asset in your hands and will
be a long-term capital gain or loss if your holding period exceeds one year.


INTERESTS OF CERTAIN PERSONS IN THE MERGER (PAGE 17)


     In considering the recommendation of Silicon's board of directors to
approve the merger, you should be aware that some of our directors and executive
officers have interests in the merger that are in addition to the benefits they
will receive as stockholders. These interests exist because of rights under
benefit and compensation plans maintained by Silicon. Additionally, our stock
option plans provide for accelerated vesting of stock options as a result of the
merger.


     In order to complete the proposed merger transaction we implemented a
retention and severance plan under which many of our employees will receive
retention and severance packages. We implemented this plan because our revenues
no longer justify supporting our full staff of employees, and we do not have
sufficient cash to adequately fund a severance and retention plan and still
maintain our business operations through the consummation of the merger without
incurring additional debt. Any debt we incurred, or cash we expended funding a
plan, would result in a lower aggregate merger consideration under the Merger
Agreement. In order for the company to remain a viable entity and to continue
operations through the merger transaction, we believed we needed to give our
existing workforce incentives to remain through consummation of the merger. We
also believed we needed to compensate those employees we involuntarily
terminated for their efforts to bring value to the company since the
consummation of our restructuring in November of 1999. Employees who receive
benefits under this plan may also be current stockholders of the company and
therefore are entitled to vote on the proposed merger transaction. The plan
includes severance or retention payments, accelerated vesting of options and
waiver of option exercise strike prices.



     IGT has offered Andrew Pascal, Paul Mathews and Thomas Carlson, three of
our officers, consulting agreements. All three agreements are for a period of
six months. Two of the agreements are for an aggregate of $25,000 and one is for
an aggregate of $15,000. Under the terms of the agreements, the consultants will
be paid monthly regardless of the amount of consultation provided by each
person. Mr. Pascal owns 11,345,410 shares of common stock of Silicon and options
to purchase 11,803,509 shares of common stock, and Mr. Mathews owns 7,878,745
shares of common stock of Silicon. Collectively, Messrs. Pascal and Mathews held
approximately 49.8% of the voting common stock of Silicon as of January 10, 2001
(excluding additional shares that may be acquired upon exercise of stock
options).



     On November 24, 1999, Messrs. Pascal and Mathews were each issued 7,828,745
shares of common stock under the 1999 Long Term Compensation Plan. Messrs.
Pascal and Mathews each issued a promissory note to the company for $117,431.17
as consideration for the shares. The board of directors has agreed to waive any
amounts due under the promissory notes as part of Messrs. Pascal and Mathews
severance and retention package, contingent upon consummation of the merger.


     Following the merger, IGT has agreed that all rights to indemnification of
the officers and directors of Silicon for some events occurring before the
merger will survive the merger. IGT has also agreed, subject to a limitation on
the premium costs, to maintain directors' and officers' liability insurance
covering Silicon's directors and officers for a period of six years.


     B III is the holder of 39,750 shares of Series D Preferred Stock, the only
series of preferred stock currently outstanding. B III also holds approximately
$11.9 million in aggregate principal and accrued and

                                        6
   13


unpaid interest as of February 1, 2001 of two classes of outstanding senior
notes issued by Silicon in November of 1999. Under the agreements controlling
those notes, as well as the Certificate of Determination under which the Series
D Preferred Stock is governed, we must obtain B III's consent prior to
consummating this merger. B III has agreed to consent to the merger transaction,
and has entered into a voting agreement with IGT under which it agreed to vote
all of its shares of capital stock of Silicon in favor of, and to otherwise
consent to, the merger transaction. As part of the merger transaction, all
outstanding amounts owed to B III under the notes, including accrued interest
and early payment premiums, will be paid to B III out of the merger
consideration prior to determining the per share proceeds for the holders of
common stock. B III is entitled to receive a prepayment premium under one class
of the senior notes of approximately $500,000, if those notes are paid in full
prior to their maturity. B III has also agreed that the shares of Series D
Preferred Stock it holds will participate in the merger consideration as if
those shares had been converted into shares of common stock. The 39,750 shares
of Series D Preferred Stock are convertible into 174,285,107 shares of common
stock. The 39,750 shares of Series D Preferred Stock, on an as converted basis,
represent the right to receive approximately 61% of the per share merger
consideration.



     In addition, B III and Carl Berg, a creditor of Silicon and an investor in
WagerWorks, have verbally agreed to purchase the shares of WagerWorks for
$6,000,000.


     The members of Silicon's Board of Directors knew about these additional
interests and considered them when they approved the merger.


DISSENTERS' APPRAISAL RIGHTS (PAGE 19)


     Silicon's stockholders are entitled under California law to exercise
dissenters' appraisal rights in connection with the merger.

                                        7
   14

                              THE SPECIAL MEETING

GENERAL


     This document is furnished in connection with the solicitation of proxies
from the holders of Silicon's common stock by Silicon's board of directors for
use at the special meeting. This document and the accompanying form of proxy are
first being mailed to Silicon stockholders on or about February 6, 2001.


TIME AND PLACE


     The special meeting will be held at our headquarters at 2800 West Bayshore
Road, Palo Alto, California 94303, on February 27, 2001, at 9:00 a.m., local
time.


MATTERS TO BE CONSIDERED

     At the special meeting, stockholders will be asked to consider and vote
upon the approval and adoption of the Merger Agreement and on other matters that
may properly be raised at the special meeting. It is not anticipated that any
other matters will be raised at the special meeting.

PROXIES

     The accompanying form of proxy is for use at the special meeting if you
will be unable or do not wish to attend in person. All shares of Silicon common
stock represented by proxies properly received prior to or at the special
meeting and not revoked will be voted in accordance with the instructions
indicated in the proxies. If no voting instructions are indicated on a proxy,
the shares represented by that proxy will be voted in favor of the Merger
Agreement proposal. Any proxy given on the accompanying form may be revoked by
the person giving it at any time before it is voted. Proxies may be revoked, or
the votes reflected in the proxy changed, by:

     - submitting, including by telecopy, a written notice of revocation bearing
       a later date than the date of the proxy to the Secretary of Silicon,
       before the vote is taken at the special meeting;

     - submitting a properly executed later-dated proxy relating to the same
       shares; or

     - attending the special meeting and voting in person.

     In order to vote in person at the special meeting, you must attend the
meeting and cast your votes in accordance with the voting procedures established
for the meeting. Attendance at the meeting will not in and of itself constitute
a revocation of a proxy. Any written notice of revocation or subsequent proxy
must be sent so as to be delivered at or before the vote is taken at the special
meeting to:

     Silicon Gaming, Inc.
     2800 W. Bayshore Road
     Palo Alto, California 94303
     Facsimile: (650) 842-9001
     Phone: (650) 842-9000
     Attention: Secretary

     Stockholders who require assistance in changing or revoking a proxy should
contact Silicon's Secretary at the address or phone number provided above.

     Stockholders should not send in any stock certificates with their proxy
cards. A letter of transmittal with instructions for the surrender of
certificates representing Silicon common stock will be mailed to Silicon
stockholders as soon as practicable after the effective time of the merger.

SOLICITATION OF PROXIES


     The cost of soliciting proxies will be borne by Silicon. We retained the
services of EquiServe to assist in the solicitation of proxies for which we will
pay approximately $9,000 plus out-of-pocket expenses. In addition, we may
reimburse brokerage houses and other persons representing beneficial owners of
shares for their

                                        8
   15

expenses in forwarding solicitation materials to such beneficial owners. We will
furnish copies of solicitation materials to such brokerage houses and other
representatives. Proxies may also be solicited by employees, officers and
directors of Silicon, personally or by telephone or telecopy. Employees,
officers and directors will not be compensated for soliciting proxies. Except as
described above, we do not presently intend to solicit proxies other than by
mail.

RECORD DATE, VOTING AND SHARE OWNERSHIP


     Stockholders of record on February 2, 2001 are entitled to notice of and to
vote at the special meeting. As of the record date, 38,579,976 shares of
Silicon's common stock, $.001 par value, were issued and outstanding and were
owned beneficially by approximately 6,900 stockholders. On the record date, the
directors and executive officers of Silicon and their affiliates were entitled
to vote 19,665,615 shares of Silicon common stock, or approximately 51.0% of the
shares of Silicon common stock outstanding on the record date.


     Each stockholder is entitled to one vote for each share of common stock
held by such stockholder. A stockholder who abstains from voting on any or all
matters will be deemed present at the meeting for quorum purposes, but will be
deemed not to have voted in favor of the particular matter (or matters) as to
which the stockholder has abstained. In the event a nominee (such as a brokerage
firm) that is holding shares for beneficial owners does not receive instructions
from such beneficial owners as to how to vote those shares on certain matters
and does not have discretionary authority to vote on those matters, then the
shares held by the nominee will be deemed present at the meeting for quorum
purposes but will not be deemed to have voted on such matters (a so-called
"broker non-vote").

     Approval and adoption of the Merger Agreement requires the affirmative vote
of each of the holders of a majority of Silicon common stock and Silicon
preferred stock outstanding on the record date, each voting as a separate class.
Accordingly, a proxy marked "abstain" will have the effect of a vote against the
proposal. Similarly, the failure of stockholder to return a proxy or attend the
special meeting to vote in person will have the effect of a vote against the
merger agreement proposal. The board of directors urges you to complete, date
and sign the accompanying proxy and return it promptly in the enclosed,
postage-paid envelope.


     Two executive officers, who collectively own approximately 49.8% of the
outstanding Silicon common stock (excluding additional shares that may be
acquired upon exercise of stock options), have entered into voting agreements
with IGT in which they agree, among other things, to be present at the special
meeting and to vote for the Merger Agreement proposal. The voting agreements are
described in more detail under the heading "The Merger Agreement -- Voting
Agreements" below.



     In addition, B III has entered into a voting agreement with IGT. B III
holds 100% of the outstanding shares of Silicon's Series D Preferred Stock, the
only series of preferred stock outstanding. Under the voting agreement, B III
agreed to vote all of its shares of Series D Preferred Stock and any other
shares of equity securities owned by it in favor of and to otherwise consent to
the merger. In addition to its Series D Preferred Stock, B III owns 441,460
shares of our outstanding common stock. This voting agreement will terminate if
the Merger Agreement is terminated or the merger is not completed by May 30,
2001.


                                   THE MERGER

     The members of the board of directors of Silicon have approved and adopted
the Merger Agreement by and among Silicon, IGT, and International Game
Acquisition Corporation, a copy of which is attached hereto as Annex A. The
board of directors recommends the approval and adoption of the Merger Agreement.


     The members of the board of directors of Silicon believe that the proposed
merger is fair and in the best interests of Silicon and its stockholders.
Pursuant to the merger, all outstanding shares of Silicon's common stock, $.001
par value per share will be converted into the right to receive cash. Silicon
anticipates that the cash proceeds per-share will be between $0.1025 and $0.1225
assuming a disposition of the shares of WagerWorks for $6,000,000. See "The
Merger Agreement -- Merger Consideration".


                                        9
   16

     No member of the board of directors or management of Silicon has indicated
any intention to oppose any action proposed to be taken with respect to the
Merger at the Special Meeting.

PARTIES TO THE MERGER

  IGT and International Game Acquisition Corporation

     IGT is one of the largest manufacturers of computerized casino gaming
equipment and products and operators of proprietary gaming machines, including
spinning reel slot machines and video gaming machines. IGT also develops and
operates electronically-linked, inter-casino proprietary gaming machine systems,
know as wide area progressive systems. In addition, IGT has developed and sells
systems for video lotteries and casino management systems.

     International Game Acquisition Corporation is a wholly-owned subsidiary of
IGT organized for the sole purpose of effecting the merger. It has not conducted
any business operations and, upon completion of the merger, its separate
corporate existence will cease.

     ALL INFORMATION CONTAINED IN THIS DOCUMENT CONCERNING IGT OR INTERNATIONAL
GAME ACQUISITION CORPORATION HAS BEEN SUPPLIED BY IGT AND HAS NOT BEEN
INDEPENDENTLY VERIFIED BY SILICON.

  Silicon Gaming

     We are engaged in the design, development, production, marketing and sale
of interactive, software-based products for the gaming industry. To date we have
deployed our products in video-based slot machines that we have designed and
developed for use in casinos and other gaming establishments. These machines
combine a multimedia gaming platform with the software-based games. Our games
feature high-quality animation, video clips, digital sound and a level of visual
appeal and interactivity. For a more detailed description of our business,
please read the enclosed annual report on Form 10-K for the fiscal year ended
December 31, 1999.

BACKGROUND OF THE MERGER

  Background of the Merger

     The terms and conditions of the merger were determined through arm's length
negotiations between the senior management of Silicon and IGT, and the
respective boards of directors of Silicon and IGT. The discussions resulted in
written proposals from IGT to acquire Silicon in a cash-out merger. The
following is a brief discussion of the contacts and negotiations that have
occurred between Silicon and IGT.

     In September 2000, Andrew S. Pascal, President and Chief Executive Officer
of Silicon, communicated with representatives from six companies to discuss a
strategic partnership with or acquisition of Silicon. Between September 2000 and
October 5, 2000, Silicon received proposals for the acquisition of Silicon from
three separate entities. On October 5, 2000, the board of directors of Silicon
met to review the alternative transactions and resolve the most appropriate
course of action. After careful consideration of each offer, the board concluded
that IGT appeared to be the most viable candidate and instructed Mr. Pascal to
continue discussions with IGT.

     On October 6, 2000, Mr. Pascal spoke with representatives of IGT and
discussed with them the proposed deal structure and terms. IGT and its counsel
reviewed Silicon's balance sheet items and discussed the tax implications of a
stock purchase versus an asset sale. IGT then made a counter proposal which
contemplated the purchase of the outstanding stock of Silicon, rather than an
asset acquisition. Mr. Pascal contacted Mr. Stan Springel and Mr. Rob Reis, the
other members of Silicon's Board of Directors, and informed them of IGT's offer.
The board concluded that IGT's proposal appeared to be acceptable, and that
Silicon should proceed in negotiations with IGT regarding this transaction.

     On October 6, 2000, Mr. Pascal contacted IGT and indicated that Silicon
would accept their offer, provided that the parties executed a letter of intent
no later than the end of the following week and that the letter of intent
provided for a break-up fee payable by IGT equal to of 5% of the transaction
value. IGT and

                                       10
   17

Mr. Pascal had further discussions regarding the structure of the deal and how
changes in the balance sheet would result in price adjustments and they also
discussed the capital structure of Silicon.

     On October 9, 2000, Mr. Pascal contacted the other bidders to inform them
that Silicon intended to accept the offer from IGT.

     On October 11, 2000, Mr. Pascal received a fax from one of the other
bidders detailing a revised offer. It consisted of a cash-for-stock transaction
in the amount of $42.0 million with a $1.0 million non-refundable deposit to be
paid upon acceptance of the offer. Mr. Pascal immediately contacted Silicon's
outside counsel to inform them of the new offer and to confirm the process for
reviewing and considering the proposal. Outside counsel advised Mr. Pascal to
contact the other members of the board of directors to inform them of the new
proposal and discuss the approach for reaching a decision and obtaining the
greatest value for the stockholders of Silicon and the greatest certainty of
consummating a transaction.

     On October 12, 2000, Mr. Pascal spoke with Messrs. Springel and Reis, the
other directors of Silicon, and outside counsel to discuss the process for
obtaining the best offer for Silicon. The board concluded that a deadline would
be established, all active bidders would be given an opportunity to submit their
best and highest offer prior to this deadline and all offers received prior to
the deadline would be given due consideration.

     On October 12, 2000, Mr. Pascal called IGT to inform them of the situation
and the process Silicon was adhering to, which was to accept best and final
offers by noon on October 13, 2000, after which the board would meet to review
the offers and make a decision. Mr. Pascal also indicated that Silicon would
look for an irrevocable advance at the time of accepting the offer, in exchange
for which Silicon would agree not to solicit additional offers from other
parties.

     On October 13, 2000, Silicon extended the deadlines for receiving the best
offer to October 16, 2000, and communicated this extension to IGT and the other
bidder.

     On October 16, 2000, Silicon received IGT's final proposal for an
acquisition of Silicon's common stock for $45.0 million (less outstanding
liabilities of Silicon at closing) in cash, of which $2.5 million would be
prepaid upon the signing of a letter of intent. The proposal contemplated that
Silicon would dispose of all of its shares of WagerWorks other than a number of
shares representing 4.9% of the equity interest of WagerWorks. Silicon also
received the other bidder's proposal, which now proposed an acquisition of
Silicon's common stock for $42.0 million in cash, a refundable $1.0 million
advance, and survival of Silicon's representations and warranties beyond the
closing of the merger. A meeting of the board of directors was held to review
the proposals from both IGT and the competing bidder. After consideration of the
alternative proposals, the Silicon board of directors concluded that the IGT
transaction was in the best interests of Silicon's shareholders, and it
unanimously voted to accept the IGT proposal.

     From October 16, 2000 through December 19, Silicon and its outside counsel
worked with IGT and its outside counsel to negotiate and draft the definitive
merger agreement as well as the voting agreements and consulting agreements. IGT
performed its diligence review on Silicon, and the various officers and
personnel of each company met or communicated to discuss in greater detail the
business operations of Silicon, including Silicon's agreements with third
parties, its employees and its plans for conduct of its business through
consummation of the proposed merger. Silicon continued to communicate with B III
regarding the proposed transaction, and B III negotiated with IGT and its
counsel with regard to its voting agreement.

     On October 26, 2000, the board of directors of Silicon met to discuss the
adoption of a severance and retention plan. The board members discussed the
functionality of such plan and Silicon's need to avoid the incurrence of
additional debt. After discussion with outside counsel, the board of directors
of Silicon agreed that the adoption of a severance plan was advisable and would
continue investigating various alternatives.

     On November 16, 2000, Silicon engaged US Bancorp Libra, a division of US
Bancorp Investments, Inc., to analyze the fairness of the proposed transaction
to the stockholders of Silicon.

     On November 7, 2000, the board of directors of Silicon met to discuss the
severance plan. After discussion among the board members of the various terms of
the severance plan, the severance plan was
                                       11
   18

approved and adopted subject to further refinements and/or adjustments as the
board of directors deemed necessary.

     On November 29, 2000, the board of directors of Silicon met to discuss the
merger transaction. The board members reviewed the current draft of the merger
agreement and discussed the terms and provisions with the outside counsel. US
Bancorp Libra attended the meeting via telephone and indicated that, subject to
completion of its due diligence, it could render its opinion within the next
week.


     On December 7, 2000, the board of directors again met to discuss the merger
transaction. US Bancorp Libra participated in the meeting and indicated that, in
its opinion, based on its diligence review and analysis, the merger transaction
was fair to the equity holders of Silicon, taken as a whole, from a financial
point of view, and that it would deliver its written and signed opinion, as of
December 7, 2000. The board of directors asked questions of U.S. Bancorp Libra
regarding its diligence review and analysis. The board of directors reviewed the
latest draft of the Merger Agreement and discussed the terms and provisions with
outside counsel, our President and Chief Executive Officer, and our Chief
Financial Officer. The board of directors determined at that time that the
proposed merger transaction was in the best interests of the company and its
stockholders. The board of directors voted to approve the Merger Agreement, and
to call a special meeting of the stockholders to vote on the approval of the
Merger Agreement.



     Between December 7 and December 19, 2000, the parties continued to
negotiate minor revisions to the documentation and on December 19, 2000, entered
into the definitive Merger Agreement attached to this Proxy Statement as Annex
A.


     On January 4, 2001, the board of directors met and ratified the final
Merger Agreement and severance and retention plan.

REASONS FOR THE MERGER; RECOMMENDATION OF SILICON BOARD

     The board of directors of Silicon believes that the merger is in the best
interest of Silicon and its stockholders, and unanimously approved the Merger
Agreement and recommends the approval and adoption of the Merger Agreement by
Silicon stockholders. In reaching this decision, the board of directors
consulted with Silicon management and with Silicon's financial and legal
advisors and considered a variety of factors, including the following material
factors:

     - the earnings, operations, financial condition and business prospects of
       Silicon, including the uncertainty of our ability to continue operations
       in the long term;

     - the belief that IGT is an attractive and strong merger partner because of
       the existing strong business of IGT and financial ability to complete the
       proposed merger transaction;

     - a review of the possible alternatives to a sale of Silicon, including the
       prospects of continuing to operate Silicon as an independent company. We
       considered the value to the stockholders of these alternatives, the
       timing and likelihood of achieving value from these alternatives, and the
       possibility that Silicon's future stock price might not have a present
       value greater than the consideration to be paid in the merger;

     - the presentation by US Bancorp Libra, its analysis of the value of
       Silicon and its opinion dated as of December 7, 2000 that, as of the date
       of the opinion, the merger consideration was fair from a financial point
       of view to the equity holders of Silicon taken as a whole;

     - the ability to complete the merger, including, in particular, the
       likelihood of obtaining regulatory approval and the provisions of the
       Merger Agreement regarding IGT's and Silicon's obligations to pursue the
       regulatory approvals;

     - the terms of the Merger Agreement, as negotiated, including IGT's
       agreement to pay, under certain circumstances, a termination fee if it
       terminates the agreement, our ability to respond to, and to accept, an
       unsolicited higher offer if consistent with the board of director's
       fiduciary responsibilities and the requirement that we pay a termination
       fee in those circumstances;

                                       12
   19

     - the current and prospective environment in which Silicon operates,
       including economic conditions and the competitive environment of the
       gaming industry;

     - the interest of Silicon's officers and directors that are different from
       or in addition to the interests of Silicon stockholders generally; and

     - the willingness of Silicon's three largest stockholders to approve the
       merger and to execute voting agreements supporting the transaction.

     The above summary of the information considered and the factors discussed
by the board of directors is not meant to be exhaustive, but includes the
material matters considered by the board of directors. In reaching its
determination to approve the Merger Agreement, the board of directors did not
assign any relative or specific weight to the factors, and individual directors
may have considered various factors differently. The board of directors
considered all of the factors as a whole and considered the factors in their
totality to be favorable to and to support the decision to approve the Merger
Agreement and to recommend that Silicon's stockholders approve it. The board of
directors relied on the experience and expertise of US Bancorp Libra, its
financial advisor, for quantitative analysis of the financial terms of the
merger.

OPINION OF FINANCIAL ADVISOR


     U.S. Bancorp Libra, a division of U.S. Bancorp Investments, Inc. ("Libra"),
was retained to serve as a consultant to Silicon in a limited capacity and has
delivered a written opinion to the Company's Board of Directors, dated December
7, 2000, and updated as of December 19, 2000 (the "Opinion"), to the effect
that, as of the date of such opinion, the Merger Consideration to be received by
the equity holders of the Company in the Merger is fair from a financial point
of view to such holders. The full text of the Opinion, which sets forth the
assumptions made, matters considered and limitations on the review undertaken in
connection with such Opinion, is attached as Annex B to the this proxy
statement, as filed with the Securities and Exchange Commission in connection
with the Merger, a copy of which is being provided to equity holders. The
summary of the Opinion set forth in this proxy statement is qualified in its
entirety by reference to the full extent of such Opinion. Equity holders are
urged to read such Opinion carefully and in its entirety.


     No limitations were imposed by Silicon on the scope of Libra's
investigation or the procedures to be followed by Libra in rendering its
Opinion. Libra was not requested to and did not make any recommendation to the
board of directors of Silicon as to the form or amount of the consideration to
be accepted by Silicon in the merger, which was determined through arm's length
negotiations between Silicon and IGT. In arriving at its Opinion, Libra did not
ascribe a specific range of value to Silicon, but rather made its determination
as to the fairness, from a financial point of view, of the consideration to be
offered to the holders of Silicon Common Stock in the merger on the basis of the
financial and comparative analyses described below.

     It should be understood that, although subsequent developments may affect
Libra's Opinion, Libra does not have any obligation to update, revise or
reaffirm their Opinion. Libra's Opinion does not address Silicon's underlying
business decision to effect the merger or the strategic and operational benefits
of the merger. Libra's Opinion is directed only to the fairness, from a
financial point of view, of the proposed consideration to be offered to equity
holders of Silicon in the merger and does not constitute a recommendation to any
holder as to how such holder should vote with respect to the merger.

     In arriving at its Opinion, Libra, among other things: (i) reviewed certain
publicly available business and historical financial information relating to
Silicon, (ii) reviewed certain internal financial information and other data
relating to the business and financial prospects of Silicon, including estimates
and financial forecasts prepared by management of Silicon, that were provided to
Libra by Silicon and not publicly available, (iii) discussed the proposed
transaction with Silicon's largest equity holder, (iv) discussed the sale
process with Silicon's management, (v) conducted discussions with members of
Silicon's senior management regarding the information and other data relating to
the business and financial prospects of Silicon, (vi) reviewed publicly
available financial and stock market data with respect to certain other
companies in lines of business Libra believed to be generally comparable to
those of Silicon, (vii) compared the financial terms of the merger with the
publicly available information with respect to the financial terms of certain
other

                                       13
   20

transactions that Libra believed to be generally relevant, (viii) reviewed the
draft Merger Agreement provided, and (ix) conducted such other financial
studies, analyses, and investigations, and considered such other information as
Libra deemed necessary or appropriate.


     In arriving at its Opinion, Libra assumed and relied upon the accuracy and
completeness of the financial and other information used by Libra without
assuming any responsibility for independent verifications of such information
and further relied upon the assurances of the management of Silicon that it is
not aware of any facts or circumstances that would make such information
inaccurate or misleading. With respect to the financial forecasts and estimates
of Silicon, upon advice of Silicon, Libra assumed that such forecasts and
estimates were reasonably prepared on a basis reflecting the best currently
available estimates and judgment of the management of Silicon as to the future
financial performance of Silicon and that Silicon would perform substantially in
accordance with such projections. In arriving at its Opinion, Libra did not make
any detailed physical inspection of the properties or assets of Silicon and did
not make or obtain any evaluations or appraisals of the assets or liabilities
(contingent or otherwise) of Silicon. Libra's Opinion necessarily was based upon
economic, monetary, market, and other conditions as they existed on, and could
be evaluated as of, December 19, 2000.


     In connection with the preparation and delivery of its Opinion to the board
of directors of Silicon, Libra performed a variety of financial and comparative
analyses, as described below. The preparation of an opinion involves various
determinations as to the most appropriate and relevant methods of financial and
comparative analysis and the application of those methods to the particular
circumstances and, therefore, such an opinion is not readily susceptible to
summary description. Furthermore, in arriving at its Opinion, Libra did not
attribute any particular weight to any analysis or factor considered by it, but
rather made qualitative judgments as to the significance and relevance of each
analysis and factor. Accordingly, Libra believes that its analyses must be
considered as a whole and that considering any portion of such analyses and
factors, without considering all analyses and factors, could create a misleading
or incomplete view of the process underlying its Opinion. In its analyses, Libra
made numerous assumptions with respect to industry performance, general business
and economic conditions and other matters, many of which are beyond the control
of Silicon. Any estimates contained in these analyses are not necessarily
indicative of actual values or predictive of future results or values, which may
be significantly more or less favorable than as set forth therein. In addition,
analyses relating to the value of businesses do not purport to be appraisals or
to reflect the prices at which businesses actually may be sold.

     Silicon did not authorize Libra to, and Libra did not, solicit indications
of interest in a business combination with Silicon from any party. Accordingly,
Libra's Opinion does not address the relative merits of the merger as compared
to any alternative business transaction that might be available to Silicon.

  Transaction Terms.


     The value to be received by holders of Silicon common stock is estimated to
be between $0.1025 and $0.1225 per share in cash, subject to adjustment under
certain circumstances and assuming a disposition of the shares of WagerWorks for
$6,000,000.


  Comparable Public Company Analysis.

     Libra compared the historical operating, financial and stock market
performances of certain publicly traded companies that it considered relevant
with the historical operating, financial and stock market performance of
Silicon, based upon information provided to Libra by the management of Silicon
and information that was publicly available. The companies that Libra included
as comparable gaming equipment companies were Casino Data Systems, Inc.,
Innovative Gaming Corp. of America, International Game Technology, Inc., Mikohn
Gaming Corp., Shuffle Master, Inc. and WMS Industries, Inc. (the "Silicon
Comparable Companies"). For each of the Silicon Comparable Companies with
meaningful operating data, Libra reviewed the revenues and earnings before
interest, taxes, depreciation and amortization.

     For each of the Silicon Comparable Companies, Libra compared total
enterprise multiples of revenue and total enterprise multiples of earnings
before interest, taxes, depreciation and amortization.
                                       14
   21

  Precedent Transaction Analysis.

     Libra compared the price being paid for Silicon to certain other gaming
equipment manufacturer transactions. Libra compared the total enterprise value
to revenue and total enterprise value to earnings before interest, taxes,
depreciation and amortization of such transactions to the comparable multiples
being paid for Silicon.

     Libra is an internationally recognized investment banking firm and, as part
of its investment banking activities, is regularly engaged in the evaluation of
businesses and their securities in connection with mergers and acquisitions,
negotiated underwritings, competitive bids, secondary distributions of listed
and unlisted securities, private placements and valuations for corporate and
other purposes. The board of directors of Silicon selected Libra because of its
expertise, reputation and familiarity with Silicon in particular and the gaming
industry in general and because its investment banking professionals have
substantial experience in transactions similar to the merger.

     As compensation for its services in connection with the Opinion, Silicon
has agreed to pay Libra a fee, upon rendering of the opinion, equal to
approximately $100,000. In addition, Libra is to receive a fee of $100,000 for
valuation work performed on WagerWorks, Inc. Furthermore, Silicon has agreed to
reimburse Libra for reasonable out-of-pocket expenses incurred in connection
with the merger and to indemnify Libra for certain liabilities that may arise
out of its engagement by Silicon and the rendering of its Opinion.

     Libra is acting as the provider of an Opinion with the merger. In the
ordinary course of its business, Libra, its successors and affiliates, for their
own accounts and for the accounts of their customers, may trade securities of
Silicon or IGT and, accordingly, may at any time hold a long or short position
in such securities.

REGULATORY MATTERS

     Silicon and IGT are subject to extensive gaming regulations. Silicon, IGT
and their subsidiaries hold registrations, approvals, gaming licenses or permits
in each jurisdiction in which they operate gaming activities. In each of these
jurisdictions, regulatory requirements must be complied with in order for us to
complete the merger. Generally, regulatory authorities have broad discretion in
granting, renewing and revoking gaming licenses and granting approvals.

     The following discussion is an abbreviated description of the various
gaming regulatory requirements applicable to the merger. For a more detailed
description of these gaming regulatory requirements generally, please see the
Annual Report on Form 10-K of IGT for the year ended December 31, 1999 and the
Annual Report on Form 10-K of Silicon for the year ended December 31, 1999.

  Nevada Gaming Regulations.

     The manufacturing and distributing of gaming devices and operation of
casino slot route within Nevada are subject to the Nevada Gaming Control Act and
the regulations of the Nevada Gaming Commission and the Nevada State Gaming
Control Board (collectively, the "Nevada Act") and various local ordinances and
regulations.

     IGT's and Silicon's respective operations are subject to the licensing and
regulatory control of the Nevada Gaming Commission, the Nevada State Gaming
Control Board, and various local licensing agencies (collectively, the "Nevada
Gaming Authorities"). Regulations of the Nevada Gaming Commission provide that
control of a registered publicly-traded corporation such as Silicon cannot be
acquired through a tender offer, merger, consolidation, acquisition of assets,
management or consulting agreements or any form of takeover whatsoever without
the prior approval of the Nevada Gaming Commission. IGT has filed applications
seeking the necessary approvals with the Nevada State Gaming Control Board and
the Nevada Gaming Commission. Silicon also has filed an application in
connection with the merger. The Nevada State Gaming Control Board reviews and
investigates applications for approval and makes recommendations on those
applications to the Nevada Gaming Commission for final action. IGT is currently
registered as a publicly-traded corporation and has been found suitable to own
the shares of its subsidiaries that engage in the manufacture and distribution
of gaming devices in Nevada. Accordingly, IGT does not expect significant
                                       15
   22

delays in obtaining necessary approvals. However, there can be no assurance that
these approvals will be granted or will be granted on a timely basis or without
burdensome conditions. Furthermore, any such approval, if granted, does not
constitute a finding, recommendation or approval by the Nevada State Gaming
Control Board or the Nevada Gaming Commission as to the merits of the merger.
Any representation to the contrary is unlawful.

     In seeking approval to acquire control of Silicon, IGT must satisfy the
Nevada Gaming Commission as to a variety of stringent standards. The Nevada
State Gaming Control Board and the Nevada Gaming Commission will consider all
relevant material facts in determining whether to grant this approval, and may
consider not only the effects of the merger but also any other facts that are
deemed relevant. Such facts may include, among others:

     - The business history of the applicant, including its record of financial
       stability, integrity and success of its operations, as well as its
       current business activities;

     - The adequacy of the proposed financing; and

     - Whether the merger will create a significant risk that IGT, Silicon or
       their subsidiaries will not satisfy their financial obligations as they
       become due or satisfy all financial and regulatory requirements imposed
       by the Nevada Act.

     Following receipt of the necessary approvals of the Nevada Gaming
Commission and completion of the merger, Silicon will be registered by the
Nevada Gaming Commission as an intermediary company of IGT and will be found
suitable as the sole stockholder of Silicon Gaming-Nevada, Inc. In addition, the
officers and directors of Silicon may also be required to be found suitable or
licensed by the Nevada Gaming Authorities. The Nevada Gaming Authorities may
deny an application for licensing, a finding of suitability or registration for
any cause that they deem reasonable. A finding of suitability is comparable to
licensing, and both require the submission of detailed personal and financial
information followed by a thorough investigation. All individuals required to
file applications for findings of suitability as officers and directors of
Silicon at the time of completion of the merger have filed applications with the
Nevada State Gaming Control Board and the Nevada Gaming Commission.

  Other Regulatory Matters.

     Other gaming regulatory approvals may be required prior to the merger being
consummated. The merger cannot take place until the necessary regulatory
approvals have been received and any waiting periods required by law have
expired. Silicon and IGT have filed (or will promptly file) all of the required
applications or notices necessary to complete the merger with each of the
applicable regulatory authorities. We cannot be sure whether or when regulatory
approval will be obtained or that the regulatory approval will be obtained
without conditions that are detrimental to Silicon or IGT.

     We cannot complete the merger unless gaming regulatory requirements are
complied with, and approval is obtained from applicable regulatory authorities.

MATERIAL FEDERAL INCOME TAX CONSEQUENCES TO SILICON STOCKHOLDERS

     The following is a summary of the material United States federal income tax
consequences of the merger to Silicon's stockholders. The summary does not
purport to be a description of all tax consequences that may be relevant to
Silicon stockholders, and assumes an understanding of tax rules of general
application. It does not address special rules which may apply to Silicon
stockholders based on their tax status, individual circumstances or other
factors unrelated to the merger. Stockholders are encouraged to consult their
own tax advisors regarding the merger.

     The receipt of cash by you in exchange for Silicon common stock pursuant to
the merger will be a taxable transaction for federal income tax purposes and my
also be a taxable transaction under applicable state, local and foreign tax
laws. You will generally recognize gain or loss for federal income tax purposes
in an amount equal to the difference between the amount of cash you receive and
your adjusted tax basis in Silicon common

                                       16
   23

stock exchanged. The gain or loss will be a capital gain or loss if you held the
Silicon common stock as a capital asset, and will be a long-term capital gain or
loss if, at the effective time of the merger, you held Silicon common stock for
more than one year. The deductibility of capital losses is subject to certain
limitations.

     Under the federal income tax backup withholding rules, unless an exemption
applies, IGT is required to and will withhold 31% of all payments to which you
are entitled in the merger, unless you provide a tax identification number and
you certify under penalties of perjury that the number is correct. If you are an
individual your tax identification number is your social security number. If you
are not an individual your tax identification number is your employer
identification number. You should complete and sign the substitute Form W-9,
which will be included with the letter of transmittal to be returned to the
exchange agent, in order to provide the information and certification necessary
to avoid backup withholding, unless an applicable exception exists and is proved
in a manner satisfactory to the exchange agent. Some of our stockholders,
including corporations and some foreign individuals, are not subject to these
backup withholding and reporting requirements. In order for a foreign individual
to qualify as an exempt recipient, however, he or she must submit a Certificate
of Foreign Status on Form W-8 attesting to his or her exempt status. Any amounts
withheld will be allowed as a credit against the holder's federal income tax
liability of that year.

     The foregoing discussion may not apply to Silicon stockholders who acquired
their Silicon common stock as a result of the exercise of employee stock options
or other compensation arrangement with Silicon or who are not citizens or
residents of the United States or who are otherwise subject to special tax
treatment. Each Silicon stockholder is urged to consult his, her or its tax
advisor to determine the tax consequences of the merger, including the effects
of applicable state, local, foreign or other tax laws.

INTERESTS OF CERTAIN PERSONS IN THE MERGER

     In considering the recommendation of Silicon's board of directors to
approve the merger, you should be aware that some of our directors and executive
officers have interests in the merger that are in addition to the benefits they
will receive as stockholders. These interests exist because of rights under
benefit and compensation plans maintained by Silicon and, in the case of some of
the executive officers, under employment agreements with Silicon that may
provide some of our executive officers with severance benefits if their
employment is terminated following the merger. Additionally, some of our
compensation and benefit plans provide for accelerated vesting of stock options
as a result of the merger.

  Severance and Retention Plan


     As of January 31, 2001, there were outstanding options to purchase up to
72,490,509 shares of Silicon common stock issued under the 1999 Long Term
Compensation Plan. The board of directors has approved a measure to waive the
exercise price of all options outstanding that were issued under this plan and
are held by employees currently employed by Silicon or who were recently
terminated. In addition, option agreements held by certain terminated employees
were amended prior to their termination to allow them to exercise their options
past the standard 90 days allowed, until the later of date of the consummation
of the merger, or thirty days following the formal termination of the merger
agreement. We implemented this plan because our revenues no longer justify
supporting our full staff of employees, and we do not have sufficient cash to
adequately fund a severance and retention plan and still maintain our business
operations through the consummation of the merger without incurring additional
debt. Any debt we incurred, or cash we expended funding a plan, would result in
a lower aggregate merger consideration under the Merger Agreement. In order for
the company to remain a viable entity and to continue operations through the
merger transaction we believe we needed to give our existing workforce
incentives to remain through consummation of the merger. We also believe we
needed to compensate those employees we involuntarily terminated for their
efforts to bring value to the company since the consummation of our
restructuring in November of 1999.


     The plan includes severance or retention payments, accelerated vesting of
options and waiver of option exercise strike prices. Employees who receive
benefits under this plan may also be current stockholders of the company and
therefore entitled to vote on the proposed merger transaction. Without this
severance and retention plan it is likely that employees would voluntarily leave
Silicon and seek employment elsewhere. If

                                       17
   24


too many of our employees left voluntarily, and we were unable to continue our
business operations through consummation of the merger, it could result in an
adverse impact on the value of Silicon or a termination of the proposed merger
agreement, both of which could mean a decrease in value for our stockholders.
Employees who voluntarily leave the company prior to consummation of the merger
will not participate in the severance and retention plan. Andrew Pascal, Thomas
Carlson and Paul Mathews will not receive any cash severance payments under the
plan.


     Nearly all of the options granted under the 1999 Long Term Compensation
Plan vested 20% upon their issuance, and 1/48th for each of the 48 consecutive
months following issuance. Of all the options issued under the plan,
approximately 40% of the initial grant amount has vested. Under the terms and
provisions of the plan, in the event of a merger, all unvested options
immediately become exercisable. All outstanding options held by our employees,
or recently terminated employees, will participate in the merger as if they had
exercised their options on the date of the consummation of the merger.
Essentially, these options will be treated as shares and included in the total
outstanding number of shares used to determine the per share merger
consideration.


     Of the options to purchase 72,490,509 shares of common stock outstanding on
January 31, 2001, nearly 85% (or approximately 61,672,081) were issued in
February of 2000 at an exercise price of $0.0075 per share. Additional options
to purchase 6,416,181 shares of common stock were issued subsequent to February
of 2000, with exercise prices ranging from $0.0075 per share to $0.075 per
share. The total aggregate exercise price to be waived for these options to
purchase an aggregate of 71,388,262 shares of common stock is approximately
$960,000. The remaining outstanding options to purchase 4,402,247 shares of
common stock, were issued at exercise prices ranging from $0.1875 to $0.4531.
Although the exercise price will be waived for these options as well, we have
excluded the exercise price of these options in calculating the aggregate
exercise price to be waived on the assumption that none of the holders of these
options would have elected to exercise their options because their exercise
prices are substantially in excess of the range of proceeds we estimate will be
received by stockholders of the company in the merger. These options to purchase
4,402,247 shares of common stock represent approximately 1.5% of the aggregate
merger consideration to be received by the stockholders of Silicon in the
proposed merger.


     The exercise prices for outstanding options granted under the 1994 Stock
Option Plan, the 1996 Outside Directors Stock Option Plan and the 1997
Nonstatutory Stock Option Plan, all of which are plans adopted prior to our debt
restructuring in November 1999, will not be waived.

  Waiver of Promissory Notes

     On November 24, 1999, Andrew Pascal and Paul Mathews were issued restricted
stock under the 1999 Long Term Compensation Plan. Each was issued 7,828,745
shares of restricted stock at a price of $0.015 per share. Messrs. Pascal and
Mathews issued promissory notes to Silicon as consideration for these shares,
each in the amount of $117,431.17, and also pledged their shares as collateral
against the obligations under those promissory notes. The board of directors has
elected to waive any amounts due under these notes so long as the merger is
consummated. As such, Messrs. Pascal and Mathews will likely not have to pay the
promissory notes or any interest accrued to date. As of December 1, 2000, each
of the notes had accrued interest in the amount of $7,503.85. Mr. Pascal is the
company's President and Chief Executive Officer. Mr. Mathews is the company's
Executive Vice President and Chief Operating Officer.

  Consulting Agreements


     IGT has offered Messrs. Pascal, Mathews and Carlson, three of our officers,
consulting agreements. All three agreements are for a period of six months. Two
of the agreements offered to Messrs. Pascal and Mathews are for an aggregate of
$25,000 and the consulting agreement offered to Mr. Carlson, the company's Chief
Financial Officer, is for an aggregate of $15,000. Under the terms of the
agreements, the consultants will be paid monthly regardless of the amount of
consultation provided by each person. As of January 31, 2001, Mr. Pascal owned
11,345,410 shares of common stock of Silicon and options to purchase 11,803,309
shares of common stock, and Mr. Mathews owned 7,878,744 shares of common stock
of Silicon. As of January 31,


                                       18
   25


2001, Mr. Carlson held options to purchase 5,656,773 shares of common stock.
Collectively, Messrs. Pascal and Mathews held approximately 49.8% of the voting
common stock of Silicon as of January 10, 2001 (excluding additional shares that
may be acquired upon exercise of stock options).


  Indemnification of Directors and Officers

     Following the merger, IGT has agreed all rights to indemnification the
officers and directors of Silicon have for some events occurring before the
merger will survive the merger. IGT has also agreed to pay, subject to a
limitation on premium costs, for one half of the expense of purchasing directors
and officers insurance policies that will cover the officers and directors of
Silicon for wrongful acts that occur prior to the consummation of the merger.
The policies will remain in force for six years after the date of the merger.
All three board members and all of the officers of the company will benefit from
this agreement and the policies.

  B III


     B III is the holder of 39,750 shares of Series D Preferred Stock, the only
series of preferred stock currently outstanding. B III also holds approximately
$11.9 million in aggregate principal and accrued and unpaid interest as of
February 1, 2001 of two classes of outstanding senior notes issued by Silicon in
November of 1999. Under the agreements controlling those notes, as well as the
Certificate of Determination under which the Series D Preferred Stock is
governed, we must get B III's consent prior to consummating this merger. B III
has agreed to consent to the merger transaction, and has entered into a voting
agreement with IGT under which it agreed to vote all of its shares of capital
stock of Silicon in favor of, and to otherwise consent to, the merger
transaction. As part of the merger transaction, all outstanding amounts owed to
B III under the notes, including accrued interest and early payment premiums,
will be paid to B III out of the merger consideration prior to determining the
per-share proceeds for the holders of common stock. B III is entitled to receive
a prepayment premium under one class of the senior notes of approximately
$500,000, if those notes are paid in full prior to their maturity. B III has
also agreed that the shares of Series D Preferred Stock it holds will
participate in the merger consideration as if those shares had been converted
into shares of common stock. The 39,750 shares of Series D Preferred Stock are
convertible into 174,285,107 shares of common stock.



     In addition, B III and Carl Berg, a creditor of Silicon and an investor in
WagerWorks, have verbally agreed to purchase the shares of WagerWorks for
$6,000,000.


     The members of Silicon's board of directors knew about these additional
interests and considered them when they approved the merger.

DISSENTERS RIGHTS

     If you hold Silicon common stock and you do not wish to accept the merger
consideration, as described in this proxy statement, then Chapter 13 (Sections
1300 through 1312) of the California General Corporation Law provides that you
may elect instead to receive cash in the amount of the "fair market value" of
your shares (exclusive of any appreciation or depreciation in connection with
the proposed merger) determined as of the day before the first announcement of
the terms of the proposed merger if dissenters rights are available. Dissenters'
rights will be available if demands for payment are properly filed with Silicon
with respect to 5% or more of Silicon outstanding shares on or prior to the date
of Silicon's special shareholders meeting.

     Chapter 13 is set forth in its entirety in Annex C to this proxy statement.
If you wish to exercise your dissenters' rights or to preserve the right to do
so, you should carefully review Annex C. If dissenters' rights are available and
you fail to comply with the procedures specified in Chapter 13 in a timely
manner, you may lose your dissenters' rights. Because of the complexity of these
procedures, you should seek the advice of counsel if you are considering
exercising your dissenters' rights.

                                       19
   26

     If you wish to exercise your dissenters' rights under Chapter 13, you must
satisfy each of the conditions described below:

     Demand for Purchase.  You must deliver to Silicon a written demand for
purchase of your shares of Silicon common stock, and it must be received not
later than the date of Silicon's special shareholders meeting. This written
demand is in addition to and separate from any proxy or vote against the
principal terms of the merger agreement. Merely voting against the approval of
the principal terms of the merger agreement will not constitute a demand for
appraisal within the meaning of Chapter 13.

     The demand for purchase must be made in writing and must be mailed or
delivered to Silicon's offices at 2800 W. Bayshore Road, Palo Alto, California
94303, Attention: Corporate Secretary. The demand must state the number and
class of shares you hold of record that you demand to be purchased and the
amount claimed to be the "fair market value" of those shares on December 18,
2000, the day before the announcement of the merger (exclusive of any
appreciation or depreciation in connection with the proposed merger). The
statement of the fair market value will constitute an offer by you to sell such
dissenting shares at that price.

     Voting Your Dissenting Shares Against the Merger.  You must vote your
dissenting shares against the merger.

     Submission of Stock Certificates.  If it is determined that dissenters'
rights are available, you must deliver your shares to Silicon within 30 days
after the date on which notice of shareholder approval of the merger is mailed
to you by Silicon. The certificates representing the shares will be stamped or
endorsed with a statement that they are dissenting shares. The notice will be
mailed by Silicon within 10 days after the approval of the merger and will
contain a statement of the price which Silicon has determined to be the fair
market value of Silicon common Stock on December 18, 2000, the day before the
first announcement of the merger. The statement of price will constitute an
offer to purchase any dissenting shares at that price.

     Disagreement Regarding Dissenting Shares of Fair Market Value.  If Silicon
denies that the shares are dissenting shares or if you disagree with Silicon as
to the calculation of "fair market value," you must file a petition in the
Superior Court of the appropriate county demanding a determination of the fair
market value of your shares of Silicon common stock. This petition must be filed
by either you or Silicon within six months of the notice of approval of the
merger described above. If a suit is filed to determine the fair market value of
the shares of Silicon common stock, the costs of the action will be assessed or
apportioned as the court concludes is equitable, provided that Silicon must pay
all such costs if the value awarded by the court is more than 125% of the price
offered by Silicon. You will continue to have all the rights and privileges
incident to your dissenting shares until the fair market value of the shares is
agreed upon or determined or you lose your dissenters' rights.


     If dissenters' rights are available and you properly demand appraisal of
your shares of Silicon common stock under Chapter 13 but you fail to perfect or
withdraw your right to appraisal, your shares of Silicon common stock will be
converted into merger consideration as described in "The Merger
Agreement -- Merger Consideration" .


     You will lose your right to require Silicon to purchase your shares of
Silicon common stock if:

     - the merger is terminated,

     - you transfer the dissenting shares prior to submitting them for
       endorsement as dissenting shares,

     - you and Silicon do not agree upon the status of the shares as dissenting
       shares or upon the purchase price, and neither you nor Silicon files a
       complaint or intervenes in a pending action within six months after the
       date on which notice of approval of merger was mailed to shareholders or

     - with the consent of Silicon, you withdraw your demand for purchase.

     Dissenters' rights cannot be validly exercised by persons other than
shareholders of record regardless of the beneficial ownership of the shares. If
you are a beneficial owner of shares that are held of record by another person,
such as a broker, a bank or a nominee, and you want to dissent from approval of
the merger, you should instruct the record holder to follow the procedures in
Annex C for perfecting your dissenters' rights.
                                       20
   27

     If you are considering exercising your dissenters' rights, you should be
aware that the fair market value of your shares of Silicon common stock as
determined under Chapter 13 could be greater than, the same as, or less than the
merger consideration. The Opinion delivered by Libra is not an opinion as to
fair market value under Chapter 13.

     The foregoing is a summary of the provisions of Chapter 13 of the General
Corporation Law of the State of California and is qualified in its entirety by
reference to the full text of Chapter 13, which is included as Annex C.

                              THE MERGER AGREEMENT

     This section describes the material provisions of the Merger Agreement, the
legal document that governs the merger, and the voting agreements. The following
information, as it relates to matters contained in or contemplated by the
agreements, is qualified in its entirety by reference to the full text of the
Merger Agreement, a copy of which is attached as Annex A to this proxy statement
and incorporated into this document. We urge you to read the agreement in its
entirety.

FORM OF MERGER

     Pursuant to the Merger Agreement, at the effective time of the merger,
International Game Acquisition Corporation will merge with and into Silicon
under California law. As a result of the merger, the separate corporate
existence of International Game Acquisition Corporation will cease and Silicon,
as the surviving corporation in the merger, will continue its existence as a
wholly-owned subsidiary of IGT and will continue under the name of Silicon. As a
result of the merger, all of the properties, assets, rights, privileges,
immunities and powers of Silicon and International Game Acquisition Corporation
will vest in the surviving corporation, and all liabilities and obligations of
Silicon and International Game Acquisition Corporation will become the
liabilities and obligations of the surviving corporation.

     Prior to the merger, Silicon intends to dispose of its shares of common
stock of WagerWorks, other than a number of shares equal to 4.9% of the equity
interest of WagerWorks, on a fully diluted basis as of the date of the Merger
Agreement, in accordance with Section 5.10 of the Merger Agreement. See
"WagerWorks Disposition". This disposition is a condition precedent to
completion of the merger.

MERGER CONSIDERATION

     At the effective time of the merger, each share of Silicon common stock
then outstanding will be converted into the right to receive cash, without
interest, as described in Section 2.1 of the Merger Agreement. Under the Merger
Agreement, upon consummation of the merger, IGT, in consideration for 100% of
the equity interests in Silicon, will pay $45,000,000 (the "Aggregate Merger
Consideration"), of which $2,500,000 (the "Prepayment Amount") was previously
paid to Silicon on October 17, 2000 as a nonrefundable deposit. The Aggregate
Merger Consideration is subject to adjustments as set forth in Section 2.1(b) of
the Merger Agreement, which include:

     - an increase of the Aggregate Merger Consideration, on a dollar for dollar
       basis, in an amount equal to the aggregate of

        - accounts receivables (net of any allowance for doubtful accounts),

        - cash on hand (including any proceeds from the disposition of
          WagerWorks), and

        - prepaid expenses

        to the extent these items are reflected as current assets on the
        estimated Company closing balance sheet provided by Silicon at least ten
        business days prior to closing (the "Agreed Upon Pre-Closing Balance
        Sheet");

     - a decrease of the Aggregate Merger Consideration, on a dollar for dollar
       basis, in an amount equal to the aggregate of
                                       21
   28

        - all obligations and liabilities of Silicon that would remain
          outstanding after the closing, (including transaction costs incurred
          but not yet paid) as set forth on the Agreed Upon Pre-Closing Balance
          Sheet; provided that any liabilities or obligations (including,
          without limitation, estimates of warranty costs, the estimated costs
          of settling or resolving any pending or threatened litigation (other
          than a specific existing dispute with a Silicon distributor) and, if
          applicable, the amount of accounting fees payable by Silicon pursuant
          to the Merger Agreement not reflected on the Agreed Upon Pre-Closing
          Balance Sheet will be treated as reductions in the Aggregate Merger
          Consideration, and

        - any obligations and liabilities of Silicon retired by IGT prior to or
          as a condition of the closing including, without limitation, $11.3
          million in aggregate principal amount of senior discount notes held by
          B III, and any accrued interest or prepayment premiums due on those
          notes, and $1.0 million of indebtedness due under a promissory note
          issued to an individual investor, each of which are to be paid in full
          in cash at the closing of the merger; and

     - the Aggregate Merger Consideration will be adjusted if the aggregate
       dollar amount of net operating loss of Silicon for the period from
       November 24, 1999 through the closing date ("NOL") plus the total amount
       of inventory reflected on Silicon's balance sheet as of the closing date
       ("Gross Inventory") (and together, the "NOL-Gross Inventory Amount") as
       set forth on the Agreed Upon Pre-Closing Balance Sheet is less than $10.0
       million or greater than $13.0 million as follows:

        - If the NOL-Gross Inventory Amount is more than $13.0 million the
          Aggregate Merger Consideration will be increased by the present value
          of the tax benefit created by the amount of NOL Gross Inventory Amount
          in excess of $13.0 million using a 37% tax-rate and a 9.75% discount
          rate.

        - If the NOL-Gross Inventory Amount is less than $10.0 million the
          Aggregate Merger Consideration will be decreased by the present value
          of the tax benefit lost by the amount of NOL Gross Inventory Amount
          less than $10.0 million using a 37% tax-rate and a 9.75% discount
          rate.


     Silicon's common stockholders will not be entitled to the entire amount of
Aggregate Merger Consideration. The holders of Silicon's Series D Preferred
Stock (and Series E Preferred Stock, if any) and the holders of approximately
$11.9 million in aggregate principal and accrued and unpaid interest as of
February 1, 2001 of outstanding senior notes, and the $1.0 million promissory
note issued to an individual investor will be paid off as part of the merger
transaction, which payment will include any accrued and unpaid interest and any
applicable premium. After payments are made to the Series D Preferred
Stockholders (and Series E Preferred Stock, if any) and holders of Silicon's
outstanding senior notes the remainder of the consideration will be divided
among Silicon's common stockholders.


  Series D Preferred Stock

     Under the terms and provisions of the Certificate of Determination for the
Series D preferred Stock, in the event of a Change of Control (as defined in the
Certificate of Determination, which definition includes a merger of Silicon with
another corporation) the holders of at least a majority of the shares of Series
D Preferred Stock then outstanding taken together as a series may require
Silicon to redeem the outstanding shares of Series D Preferred Stock by
delivering a notice to Silicon of their election to redeem the Series D
Preferred Stock (a "Redemption Notice") within the ninety (90) day period
following the Change of Control.

     Under the redemption provisions of the Certificate of Determination, the
shares of Series D Preferred Stock would be redeemed at an amount (the "Series D
Redemption Amount") equal to the greater of (A) the amount that would be paid if
such holders' Series D Preferred Stock were converted into common stock
immediately prior to the Change of Control and such shares of common stock were
purchased or participated in such Change of Control or (B) the Fair Market Value
(as defined in the Certificate of Determination) of the common stock into which
the Series D Preferred Stock held by such holders could be converted as of the
date of such Change of Control, and no payment shall be made to the holders of
the common stock or any capital stock ranking junior to the Series D Preferred
Stock unless such amount is paid

                                       22
   29


in full. Under the Certificate of Determination, the number of shares of common
stock into which each share of Series D Preferred Stock may be converted is
4,384.53149701.


     B III, the holder of all outstanding shares of Series D Preferred Stock,
has agreed to waive its right to require a redemption of those shares, so long
as it is paid merger consideration in an amount equal the amount it would
receive if it converted all of its shares of Series D Preferred Stock (and
Series E Preferred Stock, if any) into shares of common stock. The 39,750 shares
of Series D Preferred Stock held by B III are convertible into 174,285,127
shares of common stock.

  Senior Notes


     B III holds approximately $11.9 million in principal and accrued and unpaid
interest as of February 1, 2001 of outstanding senior secured notes. These notes
represent approximately $7.5 million in principal amount of notes that were not
converted to equity during our restructuring in November 1999, as well as $3.0
million in new notes, of which $2.0 million were issued contemporaneously with
the restructuring and $1.0 million was issued shortly thereafter. The
outstanding principal balance includes approximately $1.3 million in deferred
interest payments that have been added to principal under the terms of the notes
as of February 1, 2001. In the restructuring, B III agreed to exchange $39.75
million in aggregate principal amount of our outstanding Senior Discount Notes
and to amend the terms of the remaining $7.5 million in aggregate principal
amount of Senior Discount Notes in exchange for approximately 57% of the equity
interest in the company, as represented by the 39,750 shares of Series D
Preferred Stock. The total amount outstanding of the remaining notes, including
any interest accrued, prepayment premium and other amounts payable on those
notes, is to be paid off as part of the merger transaction contemporaneously
with the closing. Under the securities purchase agreements pursuant to which the
notes were issued, as well as the restructuring agreement entered into in
November 1999 between Silicon and B III, and in the Certificate of Determination
for the Series D Preferred Stock, we must obtain B III's prior written consent
to the transaction. B III has agreed to consent to the merger on the terms set
forth in the Merger Agreement, which provide that all outstanding notes B III
holds, plus any accrued interest, prepayment premium and other amounts payable
on those notes, is paid off contemporaneously with the closing of the merger.
IGT also required cancellation of the notes to consummate the merger.


CONVERSION AMOUNT

     Each share of common stock issued and outstanding immediately prior to the
effective time of the merger will be converted into the right to receive cash in
an amount equal to the quotient of the Aggregate Merger Consideration (as
adjusted in accordance with Section 2.1 of the merger agreement) minus the $2.5
million prepayment amount, divided by the total number of shares of Silicon
common stock issued and outstanding at the effective time, assuming for such
purposes that

     - each outstanding share of Series D Preferred Stock shall have been
       converted into 4,384.53149701 shares of Silicon common stock,

     - all then outstanding stock options issued under the 1999 Long Term
       Compensation plan have been accelerated and exercised in full,

     - each outstanding share of Series E Preferred Stock shall have been
       converted into 1,000 shares of Silicon common stock (and any shares
       issuable as the result of the exercise prior to the closing of any
       exchange warrants or any other outstanding warrants are issued and
       outstanding),

rounded to the nearest hundredth of a whole cent (the "Conversion Cash), and
each share of Series D Preferred Stock issued and outstanding immediately prior
to the effective time will be converted into the right to receive cash in an
amount equal to the product of 4,384.53149701 multiplied by an amount equal to
the Conversion Cash and each share of Series E Preferred Stock issued and
outstanding immediately prior to the Effective Time will be converted into the
right to receive cash in an amount equal to the product of 1,000 multiplied by
an amount equal to the Conversion Cash.

                                       23
   30

     We do not anticipate that there will be any shares of Series E Preferred
Stock outstanding at the effective time of the merger. See "Exchange Warrant"
and "Series E Preferred Stock". Based on these assumptions, the total number of
shares of common stock participating in the merger (assuming for such purpose
that the Series D Preferred Stock has been converted into common stock) is
285,355,592 shares.

EFFECTIVE TIME

     As soon as practicable on the day the merger closes, and all regulatory
approvals have been received, Silicon and IGT will file articles of merger and
all other filing required by California law with the Secretary of State of
California in the form required by California law. The merger will become
effective when the filings are made with and accepted by the Secretary of State
of California or such other time as agreed by IGT and Silicon and specified in
the filings.

EXCHANGE PROCEDURES

     As of the effective time of the merger, each certificate previously
representing shares of Silicon's common stock will represent only the right to
receive the merger consideration upon the surrender of the certificates and the
holder of the certificate will not have any additional rights with respect to
the shares of Silicon common stock.


     After the effective time of the merger, our exchange agent, EquiServe will
mail a notice and letter of transmittal to each record holder of Silicon's
common stock advising such record holder of the effectiveness of the merger and
providing instructions for surrendering to the exchange agent Silicon
certificates representing Silicon common stock in exchange for per share
consideration. The holder of the Preferred Stock is expected to surrender its
stock certificates at the closing of the merger in exchange for direct payment
from IGT.


     Upon proper surrender of a certificate to the exchange agent, together with
a properly completed and duly executed letter of transmittal, the holder of the
certificate will be entitled to receive in exchange for the certificate a check
in an amount equal to the product of the merger consideration and the number of
shares of Silicon common stock represented by the certificate surrendered, less
any required tax withholding. The surrendered certificate will be canceled. No
interest will be paid or accrue on the merger consideration.

     If any Silicon stock certificate has been lost, stolen or destroyed, upon
the making of an affidavit of that fact by the person claiming a Silicon
certificate lost, stolen or destroyed, IGT will direct the exchange agent to
issue in exchange for the shares of Silicon common stock represented by the
missing certificate, the merger consideration. The board of directors of IGT
may, in its discretion and as a condition to the issuance of any per share
consideration to the owner of shares of Silicon common stock represented by a
missing certificate, require the owner to provide IGT with an affidavit and a
bond in a sum as IGT may reasonably direct as an indemnity against any claim
that may be made against IGT or the exchange agent with respect to the missing
certificate.

     Any per share consideration that remains undistributed by the exchange
agent to former holders of Silicon common stock and Series D Preferred Stock as
of the date that is one year after the effective date shall be returned by the
exchange agent to IGT upon demand, and any holder of Silicon certificates who
has not theretofore surrendered his or her shares of Silicon common stock in
accordance with the Merger Agreement shall thereafter look only to IGT for
satisfaction of his or her claims for per share consideration.

REPRESENTATIONS AND WARRANTIES

     The Merger Agreement contains various representations, warranties and
agreements of Silicon, IGT and International Game Acquisition Corporation,
including representations and warranties regarding their due organization, good
standing, authority to enter into the Merger Agreement and consummate the merger
and compliance with gaming laws and regulations. We also made additional
representations and warranties relating to:

     - capitalization;

                                       24
   31

     - ownership of subsidiaries and other equity interest;

     - timely filing and accuracy of documents filed with the SEC;

     - absences of certain changes or events in our business since Silicon's
       latest Balance Sheet;

     - absence of pending or threatened litigation;

     - bona fide accounts receivable;

     - validity and enforceability of material contracts;

     - compliance with applicable laws respecting employment and employment
       practices;

     - absence of any labor union;

     - absence of agreements with brokers or finders;

     - necessary vote of stockholders to approve the merger;

     - good and marketable title to and valid leasehold interest in our material
       properties;

     - taxes, benefit plans and ERISA;

     - compliance with applicable laws and permits;

     - environmental liabilities and compliance with environmental laws;

     - licenses to intellectual property and absence of infringement;

     - insurance and bank accounts;

     - transactions with related parties;

     - absence of non-competition restrictions on the operation of our business;
       and

     - the terms of our outstanding "exchange" warrants issued on June 30, 2000.

     Additionally, IGT and International Game Acquisition Corporation made
representations and warranties regarding the information to be supplied for
inclusion in this document, their due organization and authority to enter into
the Merger Agreement, the absence of a broker, and the operation of
International Game Acquisition Corporation pending the merger.

COVENANTS

  Conduct of the Business Pending the Merger

     We have agreed that during the period from the date of the Merger Agreement
to the effective time of the merger, except as expressly permitted by the Merger
Agreement, that we will not, and will not allow any of our subsidiaries to:

     - declare, set aside or pay dividends;

     - split, combine or reclassify any shares of our capital stock or purchase,
       redeem or otherwise acquire any shares of our capital stock;

     - issue, deliver, sell, award, pledge, dispose of or otherwise encumber or
       authorize or propose the issuance, delivery, grant, sale, award, pledge,
       or other encumbrance or authorization of any shares of our capital stock
       or any securities convertible into or any rights, warrants or options to
       acquire any of our capital stock;

     - accelerate the vesting of any of the stock options, except as
       contemplated under the terms of the stock options or the stock option
       plans under which any stock options were granted (other than as
       contemplated by our severance and retention plan discussed under
       "Interests of Certain Person in the Merger");

                                       25
   32

     - amend our articles of incorporation, by-laws or other comparable
       organizational documents or alter the corporate structure or ownership of
       any of our material subsidiaries;

     - acquire or agree to acquire (1) by merging or consolidating with or
       purchasing a substantial portion of the assets of, any organization or
       division of any organization, or (2) any assets with a fair market value
       in excess of $250,000, other than purchases of inventory, fixtures,
       furniture, supplies, vehicles and equipment in the ordinary course of
       business consistent with past practice;

     - commence or agree to commence the operation or development of a casino or
       other gaming operations of any nature;

     - mortgage or otherwise encumber or sell, lease, exchange or otherwise
       dispose of any of our properties or assets;

     - incur any indebtedness for borrowed money, guarantee any indebtedness or
       debt securities of another person or issue or sell any debt securities or
       warrants or other rights to acquire any of our debt securities;

     - make any loans advances or capital contributions to, or investments in
       any other person;

     - make or agree to make any new capital expenditures which individually
       exceed $250,000 per fiscal quarter;

     - make or rescind any express or deemed election relating to material
       taxes, settle or compromise any claim, action, suit, litigation,
       proceeding, arbitration, investigation, audit or controversy relating to
       material taxes, or change any of our methods of reporting income or
       deductions for federal income tax purposes from those employed in the
       preparation of its federal income tax return for the taxable year ending
       March 31, 2000, except as may be required by applicable law;

     - pay, discharge or satisfy any claims, liabilities or obligations;

     - increase the compensation payable to any of our directors, officers or
       employees other than usual and customary increases to employees who are
       not officers;

     - pay or agree to pay any pension, retirement allowance, severance,
       continuation or termination benefit or other material employee benefit
       not provided for by any existing pension plan, benefit plan or employment
       agreement described in our documents filed with the SEC prior to the date
       of the Merger Agreement;

     - establish, adopt or commit to any additional pension, profit sharing,
       bonus, incentive, deferred compensation, stock purchase, stock option,
       stock appreciation right, group insurance, severance pay, termination pay
       or other material employee benefit plan, agreement or arrangement, or
       amend or modify or increase the benefits under any collective bargaining
       agreement or any employee benefit plan, agreement or arrangement;

     - enter into any severance or employment agreement with or for the benefit
       of any person;

     - increase the rate of compensation under or otherwise change the terms of
       any existing employment agreement;

     - modify, or amend in any material respect, or renew, fail to renew or
       terminate, any material contract or agreement which we or one of our
       subsidiaries is a party or waive, release, or assign any material rights
       or claims;

     - change our fiscal year;

     - authorize, recommend, propose or announce an intention to adopt a plan of
       complete or partial liquidation or dissolution of Silicon;

     - enter into any collective bargaining agreement;

                                       26
   33

     - engage in any transaction with, or enter into any agreement, arrangement
       or understanding with, directly or indirectly, any of our officers or
       directors;

     - engage in any transaction or enter into any agreement in which we would
       sell any of our inventory or assets at a price below that which would be
       negotiated if the merger agreement and the related merger were not
       contemplated;

     - enter into any agreement of any nature with WagerWorks and any entity
       controlled by or under common control with WagerWorks or modify, amend,
       assign, terminate, grant any waiver or release or change in any way any
       existing agreement with WagerWorks except for the Cross License as
       required by the merger agreement; or

     - authorize any of, or commit or agree to take any of, the foregoing
       actions.

  Regulatory Approvals

     Provided that IGT is not obligated to take any action which would require
IGT to surrender or terminate a gaming approval held by it or its subsidiaries,
IGT and Silicon have agreed to:

     - use all reasonable efforts to file, as soon as practicable after the date
       of the Merger Agreement, all notices, reports and other documents
       required to be filed with any governmental entity or any gaming authority
       with respect to the merger and the other transactions contemplated by the
       Merger Agreement and Silicon shall, upon the request of IGT, submit
       promptly any additional information requested by any such governmental
       entity or gaming authority and IGT may, in its discretion, respond to
       such requests;

     - give the other party prompt notice of the commencement or threat of
       commencement of any proceedings by or before any governmental entity or
       gaming authority with respect to the merger or any of the other
       transactions contemplated by the Merger Agreement;

     - keep the other party informed as to the status of any such proceeding or
       threat;

     - promptly inform the other party of any communication to or from the any
       governmental entity or gaming authority regarding the merger; and

     - cooperate with the other party and use its reasonable best efforts to
       receive all necessary and appropriate consents of third parties to the
       transactions contemplated by the Merger Agreement, satisfy all
       requirements prescribed by law for, and all conditions set forth in the
       Merger Agreement to, the consummation of the merger, and effect the
       merger in accordance with the Merger Agreement at the earliest
       practicable date.

  Special Meeting

     As soon as practicable following the date of the Merger Agreement, Silicon
will call, give notice of and convene a meeting of its stockholders to be held
as promptly as practicable for the purpose of voting upon a proposal to adopt
the Merger Agreement. Silicon will use its best commercially reasonable efforts
to solicit proxies representing at least a majority of the outstanding shares of
Silicon common stock eligible to vote at the Silicon stockholders meeting.
Silicon agrees to promptly advise IGT if at any time prior to the special
meeting any material information provided by it in the Proxy Statement is or
becomes incorrect or incomplete in any material respect and to provide IGT with
the information needed to correct such inaccuracy or omission.

  No Solicitation

     Under the terms of the merger agreement, we have agreed that we will not,
nor will we permit any of our subsidiaries to, directly or indirectly, through
any officer, director, representative, agent or affiliate:

     - initiate, solicit, encourage, induce or otherwise facilitate the
       initiation or submission of any inquiries, proposals or offers that
       constitute or may reasonably be expected to lead to an acquisition
       proposal;
                                       27
   34

     - furnish any information regarding Silicon to any person in connection
       with or in response to an acquisition proposal or an inquiry or
       indication of interest that could reasonably be expected to lead to an
       acquisition proposal, unless required by law;

     - enter into or maintain or continue discussions or negotiate with any
       person in furtherance of such inquiries or to obtain an acquisition
       proposal;

     - agree to, approve, recommend or endorse any acquisition proposal; or

     - enter into any letter of intent, contract or similar agreement
       contemplating or otherwise relating to any acquisition proposal.

However, prior to the adoption of this Merger Agreement by Silicon's
stockholders, Silicon is not prohibited from furnishing nonpublic information
regarding Silicon to, or entering into discussions with, any person in response
to a superior proposal that is submitted to Silicon by such person if:

     - neither Silicon nor any Silicon representative has violated any of the
       restrictions set forth above;

     - the board of directors concludes in its good faith judgment, that such
       action is required in order for the board of directors to comply with its
       fiduciary obligations to Silicon's stockholders under applicable law;

     - at or prior to furnishing any such nonpublic information to, or entering
       into discussions with, such person, Silicon gives IGT written notice of
       its intention to furnish nonpublic information to, or enter into
       discussions with, such person, and Silicon receives from such person an
       executed confidentiality agreement; and

     - at or prior to furnishing any such nonpublic information to such person,
       Silicon furnishes such nonpublic information to IGT.

     Silicon will immediately notify IGT after receipt of any acquisition
proposal or any request for nonpublic information relating to Silicon in
connection with an acquisition proposal or for access to any of the premises,
books or records of Silicon by any person or entity that informs Silicon or its
board of directors that it is considering making, or has made, an acquisition
proposal.

  Press Releases

     Silicon and IGT will consult each other before issuing, and provide each
other the opportunity to review and comment upon, any press releases or other
public statements with respect to any transactions described in the Merger
Agreement, except as may be required by law, court process or by obligations
pursuant to a listing agreement with Nasdaq.

  Access to Information and Confidentiality

     Until the effective time of the merger, we have agreed to give and to cause
our subsidiaries to give IGT and its officers, employees, accountants, counsel,
financial advisors and other representative reasonable access during normal
business hours to all of our properties, premises, books, records, contracts,
commitments, and personnel. Additionally, we will furnish promptly to IGT:

     - a copy of each report, schedule, registration statement and other
       documents filed by us during such period pursuant to the requirements of
       federal or state securities laws; and

     - all other information with respect to our business, properties and
       personnel as IGT reasonably requests.

     Except as required by law, Silicon and IGT have agreed to treat any
confidential information of the other party in accordance with the
confidentiality agreement between Silicon and IGT.

                                       28
   35

  Consultation and Reporting

     Until the effective time of the merger, Silicon will confer with IGT on a
regular and frequent basis to report material operational matters with respect
to its business and to report on the general status of its ongoing operations.

  Notification of Changes

     Silicon and IGT have each agreed to give the other prompt written notice of
any event that causes any representation or warranty given by the other party to
become untrue. The parties will each also have until the closing to supplement
or amend any of the schedules described in Articles 3 or 4 with respect to any
matter arising or discovered after the date of the Merger Agreement, if existing
or known on the date of the Merger Agreement, that would have been required to
be set forth or described in such schedules.

  Disposition of WagerWorks Stock


     We own 10,000,000 shares of the common stock of WagerWorks, Inc., a
Delaware corporation. Our holdings of WagerWorks stock represent 100% of the
outstanding common stock, and approximately 51% of the total equity interest of
the company on a fully diluted basis. The other 49% equity interest of the
company is represented by Series A Preferred Stock held by three other investors
and equity reserved for issuance under WagerWorks' employee stock option plan.
WagerWorks is a start-up company that is working on developing products for
online or Internet based gaming. It has not developed any working products to
date and is not currently generating any revenues. There is no trading market
for the shares of WagerWorks and its fair market value is difficult to
ascertain.



     As part of the merger transaction negotiation, we are required to dispose
of all of our WagerWorks stock other than a number of shares equal to 4.9% of
the total equity interest of WagerWorks on a fully diluted basis on the date of
the Merger Agreement. The disposition of the WagerWorks stock must take place on
or before the consummation of the merger. The money received for the disposition
of WagerWorks would be used towards working capital. The net proceeds received
from the disposition that is remaining at the close of the merger would increase
the amount of consideration IGT would have to pay in the merger transaction on a
dollar for dollar basis, subject to any adjustment to the net operating loss
carry forwards that occurs as a result of a gain on the disposition of
WagerWorks.



     We evaluated various options regarding the disposition of these shares,
including approaching potential purchasers to solicit their interest in
purchasing these shares. B III, an investor in and creditor of Silicon, and an
investor in WagerWorks, and Carl Berg, an individual who is a creditor of the
company and an investor in WagerWorks, have verbally agreed to purchase these
shares of WagerWorks for $6,000,000. As of February 3, 2001, we had not yet
entered into a definitive agreement for the sale of these shares of WagerWorks
and cannot be certain that we will do so. We have engaged US Bancorp Libra, an
investment banking firm, to render an opinion that the purchase price for the
shares of WagerWorks is fair to the equity holders of the company from a
financial point of view. The estimated range of merger consideration proceeds
per-share of common stock would be $0.1025 to $0.1225 assuming the shares at
WagerWorks are sold for $6,000,000. WagerWorks is a privately held company and
there is no trading market for its shares.


  Exchange Warrants

     On June 30, 2000, we issued 11,585,457 warrants in an exchange offer,
pursuant to which we offered all of our stockholders the opportunity to exchange
their shares of common stock for a unit that consisted of one share of common
stock and a warrant to purchase 3.59662 shares of common stock at an exercise
price of $0.1528 per share. These exchange warrants are not exercisable until
the earlier of the first year after their issuance, or, an "Extraordinary
Transaction", which is defined as

     - a merger, reorganization or consolidation in which a majority of the
       outstanding voting power of the surviving or consolidated corporation
       immediately following such event is held by persons or entities who were
       not stockholders of the company immediately prior to such event,

                                       29
   36

     - the sale or transfer or all or substantially all of the properties and
       assets of the company and its subsidiaries, or

     - any purchase by any party (or group of affiliated parties) other than any
       investment fund or funds associated with DDJ Capital Management LLC, of
       all of the shares of capital stock of the company.


     The merger transaction with IGT would constitute an Extraordinary
Transaction under the warrant agreement that governs these exchange warrants.
Under their terms, the exchange warrants would become immediately exercisable in
connection with the merger. However, we anticipate that the merger consideration
payable in exchange for each share of outstanding stock will be considerably
less than the $0.1528 exercise price of these exchange warrants. We anticipate
that the merger consideration per share of Silicon common stock will be between
$0.1025 and $0.1225 assuming a disposition of the WagerWorks shares for
$6,000,000.


     In addition, by their terms, the exchange warrants terminate on the
effective date of an Extraordinary Transaction unless provision is made in such
transaction in the sole discretion of the parties to the transaction for the
assumption of the exchange warrants or the substitution for the exchange
warrants of new warrants of the successor person or entity or a parent or
subsidiary thereof. Until the earlier to occur of the effective date of the
Extraordinary Transaction, the holders of exchange warrants may exercise the
warrants in accordance with their terms, but after such effective date, holders
of exchange warrants may not exercise the warrants unless they are assumed or
substituted by the successor as provided above. In the proposed merger
transaction, IGT will not assume or substitute for the exchange warrants. As a
result, the exchange warrants will terminate upon the effectiveness of the
merger.

  Stock Options

     Pursuant to the 1999 Long Term Compensation Plan, effective as of the
effective time of the merger, each outstanding stock option, granted under that
plan, whether or not exercisable or vested, will become fully exercisable and
vested. In lieu of administering the simultaneous exercise of options and
issuance of stock certificates and participation in the merger transaction, at
the effective time of the merger each stock option that is outstanding will be
canceled, and in consideration of such cancellation Silicon will pay the holders
of the stock options merger consideration as if they had exercised their options
and held shares of Silicon common stock.

     Upon payment of all amounts required to be paid, all plans pursuant to
which stock options are issued shall terminate as of the effective time of the
merger, and no holder of stock options or participant in any such plan shall
have any rights thereunder to acquire any equity securities of Silicon, the
surviving corporation or any subsidiary or affiliate thereof.


     As of January 31, 2001, there were outstanding options to purchase up to
72,490,509 shares of Silicon common stock issued under the 1999 Long Term
Compensation Plan. The board of directors has approved a measure to waive the
exercise price of all options outstanding that were issued under this plan and
are held by employees currently employed by Silicon or who were recently
terminated. In addition, option agreements held by certain terminated employees
were amended prior to their termination to allow them to exercise their options
past the standard 90 days allowed, until the later of date of the consummation
of the merger, or thirty days following the formal termination of the Merger
Agreement. We implemented this plan because our revenues no longer justify
supporting our full staff of employees, and we do not have sufficient cash to
adequately fund a severance and retention plan and still maintain our business
operations through the consummation of the merger without incurring additional
debt. Any debt we incurred, or cash we expended funding a plan, would result in
a lower aggregate merger consideration under the Merger Agreement. In order for
the company to remain a viable entity and to continue operations through the
merger transaction we believed we needed to give our existing workforce
incentives to remain through consummation of the merger. We also believed we
needed to compensate those employees we involuntarily terminated for their
efforts to bring value to the company since the consummation of our
restructuring in November of 1999. The plan includes severance or retention
payments, accelerated vesting of options and waiver of option exercise strike
prices.


                                       30
   37


     The plan includes severance or retention payments, accelerated vesting of
options and waiver of option exercise strike prices. Employees who receive
benefits under this plan may also be current stockholders of the company and
therefore entitled to vote on the proposed merger transaction. Without this
severance and retention plan it is likely that employees would voluntarily leave
Silicon and seek employment elsewhere. If too many of our employees left
voluntarily, and we were unable to continue our business operations through
consummation of the merger, it could result in an adverse impact on the value of
Silicon or a termination of the proposed Merger Agreement, both of which could
mean a decrease in value for our stockholders. Employees who voluntarily leave
the company prior to consummation of the merger will not participate in the
severance and retention plan.


     Nearly all of the options granted under the 1999 Long Term Compensation
Plan vested 20% upon their issuance, and 1/48th for each of the 48 consecutive
months following issuance. Of all the options issued under the plan,
approximately 40% of the initial grant amount has vested. Under the terms and
provisions of the plan, in the event of a merger, all unvested options
immediately become exercisable. All outstanding options held by our employees,
or recently terminated employees, will participate in the merger as if they had
exercised on the date of the consummation of the merger. Essentially, these
options will be treated as shares and included in the total outstanding number
of shares used to determine the merger consideration to be given to each
stockholder.


     Of the options to purchase 72,490,509 shares of common stock outstanding on
January 31, 2001, nearly 85% (or approximately 61,672,081) were issued in
February of 2000 at an exercise price of $0.0075 per share. Additional options
to purchase 6,416,181 shares of common stock were issued subsequent to February
of 2000, with exercise prices ranging from $0.0075 per share to $0.075 per
share. The total aggregate exercise price to be waived for these options to
purchase an aggregate of 71,388,262 shares of common stock is approximately
$960,000. The remaining outstanding options to purchase 4,402,247 shares of
common stock, were issued at exercise prices ranging from $0.1875 to $0.4531.
Although the exercise price will be waived for these options as well, we have
excluded the exercise price of these options in calculating the aggregate
exercise price to be waived on the assumption that none of the holders of these
options would have elected to exercise their options because their exercise
prices are substantially in excess of the range of proceeds we estimate will be
received by stockholders of the company in the merger. These options to purchase
4,402,247 shares of common stock represent approximately 1.5% of the aggregate
merger consideration to be received by the stockholders of Silicon in the
proposed merger.


     The exercise prices for outstanding options granted under the 1994 Stock
Option Plan, the 1996 Outside Directors Stock Option Plan and the 1997
Nonstatutory Stock Option Plan, all of which are plans adopted prior to our debt
restructuring in November 1999, will not be waived.

  Indemnification and Insurance

     All rights to indemnification for acts or omissions occurring prior to the
effective time now existing in favor of the current or former directors or
officers of Silicon and its subsidiaries as provided in its respective articles
or certificates of incorporation or bylaws or existing indemnification
agreements shall survive the merger and shall continue in full force and effect
in accordance with their terms.

     IGT also will provide, for a period of not less than six (6) years after
the effective time, Silicon's current directors and officers an insurance and
indemnification policy that provides coverage for events occurring at or prior
to the effective time that is no less favorable than Silicon's existing
directors and officers insurance policy or, if substantially equivalent
insurance coverage is unavailable, the best available coverage; provided,
however, that IGT and the surviving corporation shall be required to pay
one-half the premium for such insurance coverage, which shall not in the
aggregate exceed 150% of the annual premium currently paid by Silicon for such
insurance, but in any case shall purchase as much of such coverage as possible
for such amount.

                                       31
   38

CONDITIONS TO CONSUMMATION OF THE MERGER

     The obligations of Silicon and IGT to consummate the merger are contingent
upon and subject to the satisfaction or waiver of certain occurrences including
the following:

     - Silicon stockholder approval of the merger;

     - receipt of necessary regulatory approvals;

     - no temporary restraining order, preliminary or permanent injunction or
       other order, judgment or decree to restrain or prohibit the consummation
       of the merger or any other transaction described in the Merger Agreement
       shall have been issued and remain in effect;

     - there shall not have been instituted or pending, or threatened, any
       proceeding by any governmental entity as a result of the Merger Agreement
       or any of the transactions contemplated by the Merger Agreement if such
       governmental entity were to prevail, would reasonably be expected to have
       a material adverse effect on IGT or the surviving corporation;

     - all necessary or required gaming approvals from any gaming authorities
       shall have been received or obtained;

     - the representations and warranties of each of Silicon, IGT and
       International Game Acquisition Corporation set forth in the Merger
       Agreement shall be true and correct in all material respects as of the
       date the Merger Agreement is closed as if made at and as of such date,
       and each of Silicon, IGT and International Game Acquisition Corporation
       shall in all material respects have performed each obligation and
       complied with each covenant to be performed and complied with by it under
       the Merger Agreement;

     - Silicon will have completed the sale or disposition of WagerWorks, Inc.;

     - Silicon shall have modified its license agreement dated August 3, 2000
       with Pearson Television, Inc., as required under Section 6.2(k) of the
       Merger Agreement; and

     - Silicon shall have modified its Cross License Agreement with WagerWorks
       as required under Section 6.2(n) of the Merger Agreement.

     - Silicon will have performed or complied in all material respects with the
       obligations and covenants required to be complied with or performed by it
       under the Merger Agreement;

     - all consents and approvals of third parties necessary for the
       consummation of the transactions contemplated by the Merger Agreement
       shall have been obtained;

     - IGT will have received a certificate executed by the Chief Executive
       Officer and Chief Financial Officer of Silicon dated the Closing Date,
       certifying that the conditions relating to Silicon's representations and
       warranties, covenants and consents and approvals have been fulfilled.
       Silicon shall also have delivered to IGT (i) a certificate of good
       standing from the Secretary of State of the State of California and of
       comparable authority in other jurisdictions in which Silicon and its
       Subsidiaries are incorporated or qualified to do business stating that
       each is a validly existing corporation in good standing; (ii) duly
       adopted resolutions of the Board of Directors and stockholders of Silicon
       approving the execution, delivery and performance of this Agreement and
       the instruments contemplated hereby, certified by the Secretary of
       Silicon; and (iii) a true and complete copy of the articles of
       incorporation or comparable governing instruments, as amended, of Silicon
       and its Subsidiaries certified by the Secretary of State of the state of
       incorporation or comparable authority in other jurisdictions, and a true
       and complete copy of the by-laws or comparable governing instruments, as
       amended, of Silicon and its Subsidiaries certified by the Secretary of
       Silicon and its Subsidiaries, as applicable;

     - IGT shall have received resignations from all of the directors and
       officers of Silicon, such resignations to be effective as of the
       Effective Time;

                                       32
   39

     - Andrew Pascal, Paul Mathews and B III, as parties to their respective
       voting agreements, shall have voted their shares of Silicon Common Stock
       in accordance therewith;

     - The parties to that certain Stockholders Agreement dated November 24,
       1999 (the "Stockholders Agreement") shall have terminated such
       Stockholders Agreement subject to effectiveness of the Merger and, upon
       such effectiveness, the Stockholders Agreement shall no longer be of any
       legal force or effect;

     - The Consulting Agreements entered into with Andrew Pascal, Paul Mathews
       and Tom Carlson shall each be in force and effect;

     - There shall be no restriction (other than that imposed by applicable
       securities laws) on the right of IGT or Silicon to dispose of the shares
       of WagerWorks retained by Silicon; and

     - All outstanding warrants, options, or rights to acquire equity securities
       of Silicon shall have been exercised or have been terminated as of the
       Closing or be exercisable solely for the amount of cash merger
       consideration per share that would have been received had the warrant
       been exercised prior to the Closing.

     Please see Article 6 of the Merger Agreement for a complete statement of
the conditions to the obligations of the respective parties to consummate the
merger.

TERMINATION OF THE MERGER AGREEMENT

     The Merger Agreement may be terminated and the merger abandoned at any time
prior to the effectiveness of the merger, whether before or after the approval
by the stockholders, as follows:

     - by mutual consent of the Boards of Directors of Silicon and IGT;

     - by either Silicon or IGT if there has been a material breach by the other
       of any representation or warranty contained in the Merger Agreement or of
       any covenant contained in the Merger Agreement which has not been cured
       within 10 days after written notice is given to the party committing such
       breach;

     - by either Silicon or IGT if the merger has not occurred by May 30, 2001;

     - by either Silicon or IGT if any governmental entity shall have issued a
       final, non-appealable order, decree or ruling or taken any other action
       permanently enjoining, restraining or otherwise prohibiting the merger;

     - by either Silicon or IGT if Silicon special meeting shall have been held
       and completed and the Merger Agreement shall not have been adopted by the
       required affirmative vote of Silicon stockholders at such meeting;

     - by IGT, if the Board of Directors of Silicon (i) withdraws or modifies
       adversely its recommendation of the merger following the receipt by
       Silicon of an acquisition proposal, (ii) recommends an acquisition
       proposal to Silicon stockholders or (iii) fails to call or hold Silicon
       stockholders meeting because it has received an acquisition proposal; and

     - by IGT for the following reasons:

      - any representation made by Silicon in the Merger Agreement is materially
        untrue as of the time such representation is made; provided that such
        misrepresentation or misrepresentations are, with respect to Silicon,
        reasonably likely to cause or result in an adverse affect in an amount
        greater than $1,000,000;

      - the aggregate liabilities of Silicon at closing exceed $45,000,000;

      - at closing, Silicon does not own the patents or patent applications
        listed on Schedule 3.19 to the Merger Agreement or Silicon has licensed
        any of such patents or patent applications to a third party other than
        IGT or WagerWorks;
                                       33
   40

      - Silicon fails to negotiate in good faith the terms or conditions of the
        Merger Agreement and to make commercially reasonable efforts to provide
        IGT with the information or other assistance reasonably necessary to
        consummate the transactions contemplated by the Merger Agreement; or

      - Silicon fails to take all reasonable actions within its control
        necessary to permit the closing of the merger; or

      - on or before May 30, 2001, we have not completed our disposition of
        WagerWorks; and


     - by Silicon if, prior to approval of the merger by its stockholders and as
       a result of a superior proposal, the board of directors of Silicon
       determines, in good faith, after consultation with legal counsel and its
       financial advisor, that the failure to terminate the Merger Agreement and
       accept such superior proposal would be inconsistent with the proper
       exercise of its fiduciary duties; provided, however, that before Silicon
       may terminate the Merger Agreement, Silicon must notify IGT of the
       proposed termination and IGT, within five (5) business days of receipt of
       such notice, has the right, in its sole discretion, to offer to amend the
       Merger Agreement to provide for terms substantially similar to those of
       the superior proposal and Silicon must negotiate in good faith with IGT
       with respect to such proposed amendment; provided, further, that if IGT
       and Silicon are unable to reach an agreement with respect to IGT's
       proposed amendment within ten (10) days after such good faith
       negotiations have commenced, Silicon may terminate the Merger Agreement.



     IGT has agreed to pay us $2.5 million in addition to the $2.5 prepayment
amount, which we may retain, if the Agreement is terminated by Silicon because:


     - IGT is in material breach of any representation or warranty contained in
       the Merger Agreement or of any covenant contained in the Merger Agreement
       which in either case cannot be or has not been, cured within 10 days
       after written notice of such breach is given to IGT.


     If IGT is required to pay such termination fee, Silicon shall grant to IGT
for no additional consideration, a fully paid up nonexclusive perpetual
worldwide license to Patent Number 6,104,815 ("Method and Apparatus for
Providing Authenticated, Secure On-Line Communications Between Remote
Locations") for use in IGT's traditional gaming applications and IGT shall grant
for no additional consideration to Silicon a fully paid up nonexclusive
perpetual license to Patent Number 5,265,874 for use in Silicon's operations.
U.S. Patent No. 6,104,815 relates to systems for remote gaming, such as over the
Internet, that allow for a determination of the identity of the player placing a
wager. U.S. Patent No. 5,265,874 relates to cashless gaming systems.


     We have agreed to pay IGT a termination fee of $3.5 million if the Merger
Agreement is terminated by IGT because:

     - we are in material breach of any representation, warranty or covenant
       contained in the Merger Agreement which is reasonably likely to result in
       either an adverse effect on Silicon of an amount greater than $1.0
       million or a Material Adverse Effect (as described in the Merger
       Agreement), unless such breach consists solely of any representation or
       warranty made by Silicon in the Merger Agreement that is materially
       untrue as of the time such representation or warranty is made and that is
       reasonably likely to result in an adverse effect on Silicon of an amount
       greater than $1.0 million;

     - we terminate the Merger Agreement by proposing to approve, recommend or
       endorse an acquisition proposal in violation of the no solicitation
       provision of the Merger Agreement (Section 5.3 of the Merger Agreement);

     - we fail to obtain shareholder approval for the merger;

     - we withdraw or modify adversely our recommendation of the merger,
       recommend an acquisition proposal to Silicon stockholders or fail to call
       or hold a Silicon stockholders' meeting;

     - we fail to complete the disposition of WagerWorks prior to May 30, 2001,
       unless IGT refuses to consent to the proposed WagerWorks disposition on
       an "as is" basis and which, upon consummation, results in no further
       liabilities or obligations of any nature whatsoever relating thereto or
       arising
                                       34
   41

       therefrom to Silicon or its subsidiaries or any of the conditions to the
       closing of the merger contained in Article 6 of the Merger Agreement have
       not been satisfied; or

     - we enter into a definitive agreement with respect to another acquisition
       proposal, and IGT is not at such time in material breach of any
       representation, warranty or covenant set forth in the Merger Agreement.

     Silicon must repay the $2.5 million prepayment amount to IGT and no further
payments shall be made by either party to the other if the merger is terminated:

     - by mutual consent of the Boards of Directors of Silicon and IGT;

     - by either Silicon or IGT if there has been a material breach by the other
       of any representation or warranty contained in the Merger Agreement or of
       any covenant contained in the Merger Agreement which has not been cured
       within 10 days after written notice is given to the party committing such
       breach and (in the case of any such breach by Silicon) such breach is not
       reasonably likely to cause or result in either (i) an adverse effect on
       Silicon of an amount greater than $1.0 million or (ii) a Material Adverse
       Effect;

     - by either Silicon or IGT if the merger has not occurred by May 30, 2001;

     - by either Silicon or IGT if any governmental entity shall have issued a
       final, non-appealable order, decree or ruling or taken any other action
       permanently enjoining, restraining or otherwise prohibiting the merger;
       or

     - by IGT for the following reasons:

      - any representation or warranty made by Silicon in the Merger Agreement
        is materially untrue as of the time such representation or warranty is
        made and is reasonably likely to result in an adverse effect on Silicon
        of an amount greater than $1.0 million;

      - the total aggregate liabilities of Silicon at closing exceed
        $45,000,000;

      - at closing, Silicon does not own the patents or patent applications
        listed on Appendix A to the License Agreement dated October 16, 2000 by
        and between IGT and Silicon or Silicon has licensed any of such patents
        or patent applications to a third party other than IGT or WagerWorks;

      - Silicon fails to make commercially reasonable efforts to provide IGT
        with the information or other assistance reasonably necessary to
        consummate the transactions contemplated by the Merger Agreement; or

      - Silicon fails to take all reasonable actions within its control
        necessary to permit the closing of the merger.

VOTING AGREEMENTS

     Contemporaneously with the execution of the Merger Agreement, in order to
induce IGT to enter into the Merger Agreement, two of our major stockholders,
Mr. Andrew Pascal and Mr. Paul Mathews, entered into a voting agreement with
IGT. Mr. Pascal is the company's President and Chief Executive Officer. Mr.
Mathews is the company's Executive Vice President and Chief Operating Officer.
Under the voting agreements, each of these stockholders agreed to vote all of
Silicon common stock owned by that stockholder in favor of the merger.
Additionally, each of these stockholders has agreed not to pledge or otherwise
dispose of any Silicon common stock owned by that stockholder.


     As of January 31, 2001, these two major stockholders collectively owned
approximately 49.8% of our common stock (excluding additional shares that may be
acquired upon exercise of stock options). The voting agreements terminate upon a
termination of the Merger Agreement.


                                       35
   42

  Preferred Stock Voting Agreement


     In addition, B III Capital Partners, LP has entered into a voting agreement
with IGT. B III holds 100% of the outstanding shares of Silicon's Series D
Preferred Stock, the only series of preferred stock outstanding. Under the
voting agreement, B III agreed to vote all of its shares of Series D Preferred
Stock and all other shares of capital stock held by it in favor of and otherwise
consent to the merger. This voting agreement will terminate if the Merger
Agreement is terminated or if the merger is not consummated by May 31, 2001.



     Under the terms of the Series D Preferred Stock, in the event of a change
of control, such as the proposed merger, the holders of a majority of the
outstanding shares of Series D Preferred Stock could elect to require use to
redeem the outstanding shares of Series D Preferred Stock. However, B III, as
part of the voting agreement, has agreed that from the date of the voting
agreement through the earlier of (a) the closing date of the proposed merger,
(b) the termination of the Merger Agreement or (c) May 31, 2001, to waive its
rights, if any, as a holder of Silicon's Series D Preferred Stock to cause
Silicon to redeem its shares of Series D Preferred Stock.



     The obligations of B III under the voting agreement, including the
obligations to vote for and consent to the proposed merger and the transactions
contemplated by the Merger Agreement are subject to the condition precedent that
Silicon completes the disposition of the WagerWorks shares pursuant to a
transaction or series of transactions acceptable to and approved by B III.


     Under the voting agreement, B III:

     - agreed that upon consummation of the merger its shares of Series D
       Preferred Stock would be converted into a right to receive cash as
       specified in Section 2.1 of the Merger Agreement;

     - agreed that it would not sell, transfer, pledge or otherwise dispose of
       any of its shares of capital stock of Silicon or any interest therein
       (including the granting of a proxy to any person);

     - agreed to not convert its shares of Series D Preferred Stock into shares
       of common stock during the term of the voting agreement;

     - agreed that from the date of the voting agreement until its termination,
       B III would not, directly or indirectly, (i) take any action to solicit,
       initiate or encourage any acquisition proposal of Silicon or (ii) engage
       in negotiations or discussions with, or disclose any nonpublic
       information relating to Silicon or any subsidiary of Silicon (other than
       WagerWorks) to, or otherwise assist, facilitate or encourage, any person
       (other than IGT and International Game Acquisition Corporation) that may
       be considering making, or has made, an acquisition proposal; and

     - agreed that, upon the consummation of the merger and repayment in full,
       in cash, of the outstanding principal amounts owed it under the senior
       notes it holds, plus any and all accrued and unpaid interest and other
       amounts due thereon (including any premium payable) through and including
       the effective time of the merger, it would release Silicon, in a form of
       general release reasonably satisfactory to IGT and B III, from any
       further liabilities and obligations of any nature whatsoever relating to
       Silicon, subject to retention of certain indemnification obligations we
       have under the terms of the debt restructuring we effected with B III in
       November 1999.

MARKET PRICE OF SILICON COMMON STOCK

     Our common stock trades on the OTC Bulletin Board under the symbol SGIC.
The following table sets forth the high and low sales price of Silicon's common
stock for the periods set forth:



                                         1998                   1999                 2000
                                  -------------------    ------------------    ----------------
                                    HIGH        LOW       HIGH        LOW       HIGH      LOW
                                  --------    -------    -------    -------    ------    ------
                                                                       
First Quarter...................  $11.1875    $8.2500    $1.6875    $0.4375    $.7500    $.2344
Second Quarter..................   10.3750     7.5000     0.8125     0.3125     .5312     .2500
Third Quarter...................    9.9375     3.1250     0.5938     0.1875     .4531     .1406
Fourth Quarter..................    3.8750     1.3750     0.3438     0.0781     .3125     .0469


                                       36
   43

     The preceding table sets forth the high and low closing sale prices as
reported for Silicon during each of the quarters in 1998, 1999 and 2000. Until
February 1999, Silicon's common stock was listed on the Nasdaq Stock Market
under the symbol "SGIC". In February 1999 Silicon's common stock was delisted
from the Nasdaq National Market and Silicon's stock now trades on the OTC
Bulletin Board system under the symbol "SGIC".


     As of December 1, 2000 there were approximately 6,900 beneficial owners of
Silicon's common stock.



     On December 18, 2000, the last trading day before the execution of the
Merger Agreement was publicly announced, the closing sales price per share of
Silicon's common stock on the OTC Bulletin Board was $0.0625. The closing price
of Silicon's common stock on January 31, 2001 was $0.0700. Stockholders are
urged to obtain current information with respect to the market price of
Silicon's common stock.


     Silicon has never paid cash dividends on its common stock and it doesn't
anticipate paying cash dividends in the foreseeable future.

     Our registrar and transfer agent is EquiServe, 150 Royall Street, Canton,
MA 02021.

SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT


     The following table sets forth certain information regarding beneficial
ownership of Silicon's Common Stock as of January 31, 2001 by (i) each person
known by Silicon to own beneficially more than five percent of the outstanding
shares of Common Stock, (ii) each director of Silicon, (iii) each of Silicon's
"named executive officers" and (iv) all directors and current executive officers
as a group based on 38,579,976 shares of Silicon common stock outstanding as of
January 31, 2001.





                                                                   SHARES OF COMMON
                                                              STOCK BENEFICIALLY OWNED(1)
                                                              ---------------------------
                                                                             PERCENTAGE
FIVE PERCENT STOCKHOLDERS, DIRECTORS AND EXECUTIVE OFFICERS   NUMBER(2)     OWNERSHIP (%)
- -----------------------------------------------------------   ----------    -------------
                                                                      
Andrew S. Pascal............................................  15,030,784        38.96
Paul D. Mathews.............................................   7,878,745        20.42
Betsy B. Sutter.............................................   1,818,655         4.71
Paul Miltenberger...........................................   2,423,812         6.28
Rob Reis....................................................   2,828,311         7.33
Stan Springel...............................................   1,414,156         3.67
All directors and current executive officers as a group (6
  persons)(3)...............................................  31,394,463        81.38



- ---------------

(1) Beneficial ownership is determined in accordance with the rules of the
    Securities and Exchange Commission. In computing the number of shares
    beneficially owned by a person and the percentage ownership of that person,
    shares of common stock subject to options or warrants held by that person
    that are currently exercisable or will become exercisable within 60 days
    after January 31, 2001, are deemed outstanding; such shares are not deemed
    outstanding for purposes of computing percentage ownership of any other
    person. The information set forth in this table does not include shares
    beneficially owned or outstanding shares of common stock issuable upon
    conversion of Series D Preferred Stock which is convertible only upon 75
    days' prior notice to Silicon. Unless otherwise indicated in the footnotes
    below, the persons and entities named in the table have sole voting and
    investment power with respect to all shares beneficially owned, subject to
    community property laws where applicable.


(2) On November 24, 1999, Silicon adopted the "1999 Long Term Compensation Plan"
    pursuant to a resolution of the Board of Directors. On the 7th of February,
    2000, the officers along with many of the employees, were granted new
    options that took effect in fiscal year 2000. The schedule of beneficial
    shares reflects the effects of this plan with regards to the officers listed
    thereunder. Options granted under the 1999 Long term Compensation Plan vest
    20% on date of issuance, and the remainder vest 1/48th each calendar month
    after issuance, unless earlier terminated.

                                       37
   44


(3) Includes 12,170,308 shares issuable upon exercise of stock options that are
    currently exercisable or will become exercisable within 60 days after
    January 31, 2001 from the options that were granted on February 7th, 2000,
    under the 1999 Long Term Compensation Plan. Does not include shares issuable
    upon exercise of stock options that are not exercisable at or within 60 days
    after January 31, 2001 but that will become immediately exercisable upon
    consummation of the merger.


OTHER STOCKHOLDERS MEETINGS

     We intend to hold an annual meeting of our stockholders in 2001 only if the
merger is not consummated. If an annual meeting is held, eligible Silicon
stockholders may submit proposals to be considered for stockholder action at the
annual meeting if they do so in accordance with applicable regulations of the
SEC and our by-laws. If an annual meeting is held, it is expected that a
representative of Deloitte & Touche LLP will be present and available to respond
to appropriate questions from stockholders. The representative will also have
the opportunity to make a statement at the annual meeting if he or she so
desires.

WHERE YOU CAN FIND MORE INFORMATION

     Silicon files annual, quarterly and special reports, proxy statements and
other information with the SEC. You may read and copy any reports, statements or
other information we file at the SEC's public reference rooms in Washington,
D.C., New York, New York, and Chicago, Illinois. Please call the SEC at
1-800-SEC-0330 for further information on the public reference rooms. Our SEC
filings are also available to the public from commercial document retrieval
services and at the web site maintained by the SEC at http://www.sec.gov.

FORWARD LOOKING STATEMENT MAY PROVE INACCURATE

     This document, and documents to which we refer you in this document,
contain forward-looking statements about, among other things, Silicon, IGT and
our expectations or beliefs concerning future events or future results of
operations. These statements are typically identified by terms indicating future
expectation such as "anticipates," "believes," "expects," "estimates,"
"intends," and similar expressions. These forward-looking statements are subject
to numerous risks and uncertainties and many factors could cause actual results
and events to differ significantly from those discussed in forward-looking
statements, including but not limited to,

     - risks associated with negotiating and documenting a merger transaction;

     - uncertainty of consummating the transaction;

     - uncertainty of obtaining stockholder approval;

     - risk of failure to obtain necessary regulatory approvals, including
       gaming regulatory approvals;

     - risk of failure to obtain necessary consents from third parties;


     - uncertainty generally associated with the operation of the business of
       Silicon and in particular the financial condition of the company; and



     - uncertainty regarding the amount of proceeds expected to be available for
       distribution to stockholders.



     All forward-looking statements are subject to the risks and uncertainties
inherent with predictions and forecasts. They are necessarily speculative
statements, and unforeseen factors, such as competitive pressures, changes in
regulatory structure, failure to gain the approval of regulatory authorities,
and changes in customer acceptance of gaming could cause results to differ
materially from any that may be expected. Forward-looking statements are made in
the context of information available as of the date stated. In addition, events
may occur in the future that we are not able to accurately predict or control
and that may cause actual results to differ materially from the expectations
described in the forward-looking statements.


     Readers should not place undue reliance on the forward-looking statements
contained in this proxy statement. These forward-looking statements speak only
as of the date on which the statements were made. In
                                       38
   45

evaluating forward-looking statements, you should consider these risks and
uncertainties, together with the other risks described from time to time in our
reports and documents files with the Securities and Exchange Commission, and you
should not place undue reliance on those statements.

OTHER MATTERS

     Silicon knows of no other matters that will be presented for consideration
at the special meeting. If any other matters properly come before the special
meeting, it is the intention of the persons named in the enclosed form of Proxy
to vote the shares they represent as the Board of Directors may recommend.
Discretionary authority with respect to such other matters is granted by the
execution of the enclosed Proxy.

                                          THE BOARD OF DIRECTORS


DATED: February 3, 2001


                                       39
   46

                                    ANNEX A

                          AGREEMENT AND PLAN OF MERGER
   47

                          AGREEMENT AND PLAN OF MERGER

                                  BY AND AMONG

                         INTERNATIONAL GAME TECHNOLOGY,
                  INTERNATIONAL GAME ACQUISITION CORPORATION,

                                      AND

                              SILICON GAMING, INC.

                            DATED DECEMBER 19, 2000
   48

                                   ARTICLE 1

               THE CLOSING; THE MERGER; THE EFFECTS OF THE MERGER




                                                                      PAGE
                                                                      ----
                                                                
1.1   Closing.....................................................      1
1.2   The Merger; Effective Date and Effective Time...............      2
1.3   Effects of Merger...........................................      2
1.4   Articles of Incorporation and Bylaws of the Surviving             2
      Corporation.................................................
1.5   Directors and Officers of the Surviving Corporation.........      2
1.6   Additional Actions..........................................      2



                                   ARTICLE 2

          EFFECT ON THE CAPITAL STOCK OF THE CONSTITUENT CORPORATIONS;
                            EXCHANGE OF CERTIFICATES



                                                                
2.1   Effect on Capital Stock.....................................      3
2.2   Exchange of Stock Certificates; Record Date.................      4
2.3   No Further Rights in Silicon Stock..........................      5
2.4   Undelivered Merger Consideration............................      5
2.5   Escheat.....................................................      5
2.6   Dissenters' Rights..........................................      5



                                   ARTICLE 3

                   REPRESENTATIONS AND WARRANTIES OF SILICON



                                                                
3.1   Organization; Qualification; Subsidiaries...................      6
3.2   Silicon Capital Stock.......................................      6
3.3   Authority; Enforceability...................................      8
3.4   No Conflicts or Consents....................................      8
3.5   Permits; Compliance with Laws...............................      9
3.6   Title to Properties.........................................      9
3.7   Corporate Formalities; Corporate Documents and Stockholder        9
      Agreements..................................................
3.8   SEC Documents; Financial Statements; Liabilities............      9
3.9   Absence of Certain Changes or Events........................     10
3.10  Legal Proceedings...........................................     11
3.11  Accounts Receivable.........................................     11
3.12  Contracts...................................................     11
3.13  Environmental Matters.......................................     12
3.14  Employee Matters............................................     12
3.15  ERISA and Related Matters...................................     13
3.16  Taxes.......................................................     14
3.17  Transactions with Related Parties...........................     15
3.18  Voting Requirements.........................................     15
3.19  Intellectual Property.......................................     16



                                        i
   49




                                                                      PAGE
                                                                      ----
                                                                
3.20  Insurance...................................................     16
3.21  Bank Accounts; Power of Attorney............................     17
3.22  Fairness Opinion; No Finder's Fee...........................     17
3.23  Noncompetition..............................................     17
3.24  WagerWorks Transactions.....................................     17
3.25  WagerWorks Intellectual Property............................     17
3.26  Exchange Warrants...........................................     17
3.27  WagerWorks Corporate Management Services Agreement..........     17



                                   ARTICLE 4

                REPRESENTATIONS AND WARRANTIES OF IGT AND NEWCO



                                                                
4.1   Organization................................................     18
4.2   Authority; Enforceability...................................     18
4.3   No Conflicts or Consents....................................     18
4.4   No Finder's Fee.............................................     19
4.5   Information Supplied........................................     19
4.6   Financing...................................................     19



                                   ARTICLE 5

                                   COVENANTS



                                                                
5.1   Regulatory Approvals; Gaming Authority; Cooperation and Best     19
      Efforts.....................................................
5.2   Silicon Special Meeting.....................................     20
5.3   No Solicitation.............................................     21
5.4   Press Releases..............................................     22
5.5   Access to Information and Confidentiality...................     22
5.6   Consultation and Reporting..................................     22
5.7   Notification of Changes.....................................     23
5.8   Fees and Expenses...........................................     23
5.9   Conduct of Business.........................................     23
5.10  Completion of Disposition of WagerWorks.....................     25
5.11  Stock Options...............................................     26
5.12  Interim Financing...........................................     26
5.13  Indemnification and Insurance...............................     26
5.14  Certain WagerWorks Transactions.............................     27



                                       ii
   50

                                   ARTICLE 6

                               CLOSING CONDITIONS




                                                                      PAGE
                                                                      ----
                                                                
6.1   Conditions Applicable to all Parties........................     27
6.2   Conditions to IGT's and NewCo's Obligations.................     28
6.3   Conditions to Obligations of Silicon........................     29



                                   ARTICLE 7

                           TERMINATION AND AMENDMENT



                                                                
7.1   Termination.................................................     29
7.2   Effect of Termination.......................................     31
7.3   Expenses; Termination Fees..................................     31



                                   ARTICLE 8

                                 DEFINED TERMS



                                                                
8.1   Definitions.................................................     32



                                   ARTICLE 9

                                 MISCELLANEOUS



                                                                
9.1   Notices.....................................................     37
9.2   Headings; Gender............................................     38
9.3   Entire Agreement; No Third Party Beneficiaries..............     38
9.4   Governing Law...............................................     38
9.5   Assignment..................................................     38
9.6   Severability................................................     38
9.7   Counterparts................................................     38
9.8   Amendment...................................................     38





           
EXHIBIT A   --   Form of Voting Agreement
EXHIBIT B   --   Form of Preferred Stock Voting Agreement
EXHIBIT C   --   Form of Consulting Agreement
EXHIBIT D   --   Form of Consulting Agreement
EXHIBIT E   --   AGREEMENT OF THE MERGER



                                       iii
   51

                          AGREEMENT AND PLAN OF MERGER

     THIS AGREEMENT AND PLAN OF MERGER (this "Agreement"), dated December 19,
2000, is by and among International Game Technology, a Nevada corporation
("IGT"), and International Game Acquisition Corporation, a California
corporation ("NewCo"), on the one hand, and Silicon Gaming, Inc., a California
corporation ("Silicon"), on the other. Capitalized terms not otherwise defined
in this Agreement have the meanings ascribed to them in Article 8.

                                   BACKGROUND

     A. The respective Boards of Directors of IGT, NewCo and Silicon have
approved the merger of NewCo with and into Silicon (the "Merger") in accordance
with California law, whereby, among other things, all outstanding shares of
Silicon common stock, $.001 par value per share ("Silicon Common Stock") will be
converted into the right to receive cash in the manner set forth in Article 2 of
this Agreement.

     B. Prior to the Merger, Silicon intends to dispose of its shares of common
stock of WagerWorks, Inc. (formerly known as uBet.com, Inc.), a Delaware
corporation ("WagerWorks"), other than an amount equal to 4.9% of the equity
interest of WagerWorks, on a fully-diluted basis as of the date of this
Agreement (the "WagerWorks Shares"), in a manner satisfactory to IGT, Silicon
and the holders of a majority of the outstanding shares of Series D Preferred
Stock (the "WagerWorks Disposition").

     C. The respective Boards of Directors of Silicon, IGT and NewCo have
determined that the Merger is in furtherance of their respective long-term
business interests, and is fair to and in the best interests of their respective
stockholders.

     D. Andrew Pascal and Paul Mathews, the principal holders of the issued and
outstanding shares of Silicon Common Stock have executed a voting agreement in
the form attached hereto as Exhibit A (the "Common Stock Voting Agreement") and
B III Capital Partners, L.P., a Delaware limited partnership ("B III"), the sole
holder of the issued and outstanding shares of Silicon Series D Preferred Stock
has executed a voting agreement in the form attached hereto as Exhibit B (the
"Preferred Stock Voting Agreement," and together with the Common Stock Voting
Agreement, the "Voting Agreement") concurrent with the execution of this
Agreement.

     E. Andrew Pascal and Paul Mathews have each executed a consulting agreement
in the form attached hereto as Exhibit C and Tom Carlson has executed a
consulting agreement in the form attached hereto as Exhibit D (each,
respectively, a "Consulting Agreement") concurrent with the execution of this
Agreement, which agreements will commence upon the Effective Date.

                                   AGREEMENT

     NOW, THEREFORE, in consideration of the mutual promises, covenants and
agreements set forth in this Agreement, IGT, NewCo and Silicon agree as follows:

                                   ARTICLE 1

               THE CLOSING; THE MERGER; THE EFFECTS OF THE MERGER

     1.1 Closing.

     (a) The closing of the transactions contemplated by this Agreement (the
"Closing") will take place at 10:00 a.m. on the third business day following the
satisfaction or waiver of each of the closing conditions set forth in Article 6
(other than those conditions that can only be satisfied on or as of the Closing
Date, which must be satisfied or waived at or as of the Closing) of this
Agreement at the offices of Squire, Sanders & Dempsey L.L.P., 600 Hansen Way,
Palo Alto, California.
   52

     (b) At the Closing, each party to this Agreement will:

          (i) deliver the documents and certificates required to be delivered by
     it pursuant to Article 6;

          (ii) provide proof or indication of the satisfaction or waiver of each
     of the conditions to the other party's obligations set forth in Article 6;

          (iii) cause its appropriate officers to execute and deliver Articles
     of Merger in substantially the form of Exhibit E (the "Articles of Merger")
     and with such mutually agreed upon changes, if any, thereto as may be
     necessary in accordance with the California General Corporation Law in the
     view of the Secretary of State of the State of California to permit the
     Articles of Merger to be filed with the Secretary of State, ("CGCL"); and

          (iv) consummate the Merger by causing to be filed properly executed
     Articles of Merger with the Secretary of State of the State of California
     in accordance with CGCL.

     1.2 The Merger; Effective Date and Effective Time.  On the terms and
subject to the conditions of this Agreement, and in accordance with the
applicable provisions of the CGCL, NewCo will merge with and into Silicon at the
Effective Time (as defined below). Following the Merger, the separate existence
of NewCo will cease and Silicon will continue as the surviving corporation (the
"Surviving Corporation") and shall succeed to and assume all the rights and
obligations of NewCo in accordance with the CGCL. The Merger will be effective
as of the date and time specified in the Articles of Merger (the "Effective
Date" and the "Effective Time", respectively).

     1.3 Effects of Merger.  The Merger will have the effects set forth under
the CGCL and as set forth in this Agreement.

     1.4 Articles of Incorporation and Bylaws of the Surviving Corporation.

     (a) The Articles of Incorporation of Silicon, as amended and restated and
filed with the Articles of Merger with the Secretary of State of the State of
California, shall be the Articles of Incorporation of the Surviving Corporation
thereafter unless and until amended in accordance with the terms of the Articles
of Incorporation and as provided by law.

     (b) The Bylaws of NewCo, as in effect at the Effective Time, shall be the
Bylaws of the Surviving Corporation thereafter unless and until amended in
accordance with their terms, the terms of the Articles of Incorporation and as
provided by law.

     1.5 Directors and Officers of the Surviving Corporation.  At the Effective
Time, each of the directors and officers of Silicon shall resign. The directors
and officers of NewCo immediately prior to the Effective Time will be the
directors and officers of the Surviving Corporation thereafter, each to hold a
directorship or office in accordance with the Articles of Incorporation and
Bylaws of the Surviving Corporation until the earlier of their resignation or
removal, or until their respective successors are duly elected or appointed and
qualified, as the case may be.

     1.6 Additional Actions.  If, at any time after the Effective Time, the
Surviving Corporation shall consider, or be advised, that any deeds, bills of
sale, assignments, assurances or any other actions or things are necessary or
desirable to vest, perfect or confirm of record or otherwise in the Surviving
Corporation its right, title or interest in, to or under any of the rights,
properties or assets of NewCo or Silicon or otherwise to carry out this
Agreement, the officers and directors of the Surviving Corporation shall be
authorized to execute and deliver, in the name and on behalf of NewCo or
Silicon, all such deeds, bills of sale, assignments and assurances and to take
and do, in the name and on behalf of NewCo or Silicon, all such other actions
and things as may be necessary or desirable to vest, perfect or confirm any and
all right, title and interest in, to and under such rights, properties or assets
in the Surviving Corporation or otherwise to carry out this Agreement.

                                        2
   53

                                   ARTICLE 2

                       EFFECT ON THE CAPITAL STOCK OF THE
               CONSTITUENT CORPORATIONS; EXCHANGE OF CERTIFICATES

     2.1 Effect on Capital Stock.  At the Effective Time, by virtue of the
Merger and without any further action on the part of IGT, NewCo, Silicon or the
stockholders of such entities:

          (a) Capital Stock of NewCo.  Each issued and outstanding share of
     capital stock of NewCo will be converted into and become one fully paid and
     nonassessable share of common stock of the Surviving Corporation.

          (b) Merger Consideration.  The consideration to be paid by IGT for
     100% of the equity interests in Silicon shall be $45,000,000 (the
     "Aggregate Merger Consideration") of which $2,500,000 (the "Prepayment
     Amount") was previously paid to Silicon on October 17, 2000 upon execution
     of the Letter Agreement regarding the transaction, and of which the
     remaining $42,500,000, subject to the following adjustments, will be paid
     at the Effective Time:

             (i) The Aggregate Merger Consideration will be increased, on a
        dollar for dollar basis, in an amount equal to the aggregate of the
        following items, to the extent such items are reflected as current
        assets on the Agreed Upon Pre-Closing Balance Sheet:

                (A) accounts receivables (net of any allowance for doubtful
           accounts); plus

                (B) cash on hand; plus

                (C) prepaid expenses.

             (ii) The Aggregate Merger Consideration will be decreased, on a
        dollar for dollar basis, in an amount equal to the aggregate of the
        following:

                (A) all obligations and liabilities of Silicon, including
           Transaction Costs incurred but not yet paid by Silicon, that remain
           outstanding as of the Closing as set forth on the Agreed Upon
           Pre-Closing Balance Sheet, provided that any liabilities or
           obligations (including, without limitation, estimates of warranty
           costs, the estimated costs of settling or resolving any pending or
           threatened litigation (other than the Drews Distributing matter
           identified on Schedule 3.10 hereto) and, if applicable, the amount of
           accounting fees payable by Silicon under Section 2.1(c) hereof) not
           reflected on the Agreed Upon Pre-Closing Balance Sheet shall
           nevertheless be valued by mutual agreement between Silicon, B III and
           IGT and such amounts shall be treated as reductions in the Aggregate
           Merger Consideration; and

                (B) obligations and liabilities of Silicon retired by IGT prior
           to or as a condition of the Closing (to the extent not included in
           Section 2.1(b)(ii)(A) above), including, without limitation,
           indebtedness owed to B III under the Amended Notes and the New Notes
           and indebtedness under the Berg Note, each of which shall be paid in
           full, in cash, at the Closing.

             (iii) The Aggregate Merger Consideration will be adjusted if the
        aggregate dollar amount of NOL plus Gross Inventory (the "NOL-Gross
        Inventory Amount") as set forth on the Agreed Upon Pre-Closing Balance
        Sheet is less than $10,000,000 or greater than $13,000,000, as follows:

                (A) If the NOL-Gross Inventory Amount is more than $13,000,000,
           the Aggregate Merger Consideration will be increased by the present
           value of the tax benefit created by the amount of NOL-Gross Inventory
           Amount in excess of $13,000,000 using a 37% tax-rate and a 9.75%
           discount rate; and

                (B) If the NOL-Gross Inventory Amount is less than $10,000,000,
           the Aggregate Merger Consideration will be decreased by the present
           value of the tax benefit lost by the amount of NOL-Gross Inventory
           Amount less than $10,000,000 using a 37% tax-rate and a 9.75%
           discount rate.

                                        3
   54

          (c) Pre-Closing Balance Sheet.  At least ten Business Days prior to
     Closing, Silicon will provide IGT with a copy of an estimated Silicon
     balance sheet as of the anticipated Closing Date (the "Pre-Closing Balance
     Sheet"). The Pre-Closing Balance Sheet shall be prepared in accordance with
     GAAP, applied on a basis consistent with Silicon's past practices but shall
     also reflect estimates of liabilities and obligations not required to be
     recorded in accordance with generally acceptable accounting principles as
     required by Section 2.1(b)(ii)(A) hereof. Upon receipt of the Pre-Closing
     Balance Sheet, IGT shall have five Business Days in which to review it and
     either accept it or identify objections to it by written notice to Silicon.
     If, within five Business Days following delivery of the Pre-Closing Balance
     Sheet to IGT, IGT has not given notice to Silicon of objections to the
     Pre-Closing Balance Sheet, then the Pre-Closing Balance Sheet shall be used
     as the balance sheet for determination of adjustments to the Aggregate
     Merger Consideration, if any, pursuant to this Section 2.1 (the "Agreed
     Upon Pre-Closing Balance Sheet"). If IGT has given timely notice of an
     objection to any item on the Pre-Closing Balance Sheet then Silicon and IGT
     shall promptly work with each other to resolve any such objection. If such
     objection has not been resolved within two Business Days after IGT gives
     notice of an objection, then the issues in dispute shall be submitted to
     Ernst & Young (the "Accountants") provided that the date as of which the
     Accountants shall be seeking to resolve the disagreement shall be the date
     of the Pre-Closing Balance Sheet; provided, however, if the Accountants
     shall not resolve any such disagreement within fifteen Business Days after
     the date of the Pre-Closing Balance Sheet, then the date of the Pre-Closing
     Balance Sheet shall be changed to a date within fifteen days of the then
     anticipated Closing Date. If the issues are submitted to the Accountants
     for resolution, (i) the determination by the Accountants, as set forth in a
     notice delivered to the Parties, will be binding and conclusive on the
     Parties, and (ii) (A) if the determination by the Accountants results in a
     decrease in the Aggregate Merger Consideration of less than $200,000, then
     IGT will bear 100% of the fees and costs of the Accountants for such
     determination (b) if the determination by the Accountants results in a
     decrease in the Aggregate Merger Consideration of $200,000 or more, then
     Silicon will bear 100% of the fees of the Accountants for such
     determination and the portion of such costs to be borne by Silicon shall be
     reflected as a liability of Silicon unless such cost has been paid in cash
     by Silicon prior to the Closing Date.

          (d) Conversion of Silicon Capital Stock; Conversion Cash.  Subject to
     Section 2.1(b), each share of Silicon Common Stock issued and outstanding
     immediately prior to the Effective Time will be converted into the right to
     receive cash in an amount equal to the quotient of the Aggregate Merger
     Consideration (as adjusted in accordance with Section 2.1(b) hereof) minus
     the Prepayment Amount , divided by the total number of shares of Silicon
     Common Stock issued and outstanding at the Effective Time (assuming for
     such purposes that each outstanding share of Series D Preferred Stock shall
     have been converted into 4,384.53149701 shares of Silicon Common Stock, all
     then outstanding Stock Options (excluding the Original Stock Options) have
     been accelerated and exercised in full, each outstanding share of Series E
     Preferred Stock shall have been converted into 1,000 shares of Silicon
     Common Stock and any shares issuable as the result of the exercise prior to
     the closing of any Exchange Warrants or any other outstanding warrants are
     issued and outstanding), rounded to the nearest hundredth of a whole cent
     (the "Conversion Cash), and each share of Series D Preferred Stock issued
     and outstanding immediately prior to the Effective Time will be converted
     into the right to receive cash in an amount equal to the product of
     4,384.53149701 multiplied by an amount equal to the Conversion Cash and
     each share of Series E Preferred Stock issued and outstanding immediately
     prior to the Effective Time will be converted into the right to receive
     cash in an amount equal to the product of 1,000 multiplied by an amount
     equal to the Conversion Cash.

     2.2 Exchange of Stock Certificates; Record Date.

     (a) Prior to the Effective Time, IGT will appoint the American Stock
Transfer & Trust Company or another entity selected by IGT (the "Exchange
Agent") to arrange for the exchange of certificates that, immediately prior to
the Effective Time, represented issued and outstanding shares of Silicon Common
Stock and Series D Preferred Stock and Series E Preferred Stock (the "Silicon
Certificates") for the per share consideration specified in Section 2.1 hereof.
On or before the Closing Date, IGT will deliver to the Exchange Agent, in trust
for the benefit of each holder of record of Silicon Common Stock and Series D
and Series E

                                        4
   55

Preferred Stock the Conversion Cash. As soon as practicable after the Effective
Time, IGT will cause the Exchange Agent to mail a notice and letter of
transmittal to each record holder of Silicon Common Stock and Series D and
Series E Preferred Stock advising such record holder of the effectiveness of the
Merger and providing instructions for surrendering to the Exchange Agent the
Silicon Certificates representing Silicon Common Stock and Series D and Series E
Preferred Stock in exchange for per share consideration specified in Section 2.1
hereof. Each holder of Silicon Certificates, upon proper surrender thereof and a
duly completed letter of transmittal to the Exchange Agent, will be entitled to
receive from the Exchange Agent in exchange for the Silicon Certificates
(subject to any taxes required to be withheld) the amount specified in Section
2.1 hereof. Until properly surrendered, after the Effective Time each Silicon
Certificate will be deemed for all purposes to evidence only the right to
receive Conversion Cash. Holders of Silicon Certificates will not be entitled to
receive the amount specified in Section 2.1 hereof until their Silicon
Certificates are properly surrendered.

     (b) If any Silicon Certificate has been lost, stolen or destroyed, upon the
making of an affidavit of that fact by the Person claiming the Silicon
Certificate to be lost, stolen or destroyed (a "Missing Certificate"), IGT will
direct the Exchange Agent to issue in exchange for the shares of Silicon Common
Stock represented by the Missing Certificate, the amount specified in Section
2.1 hereof. The Board of Directors of IGT may, in its discretion and as a
condition to the issuance of any per share consideration to the owner of shares
of Silicon Common Stock represented by a Missing Certificate, require the owner
to provide IGT with an affidavit and a bond in a sum as IGT may reasonably
direct as an indemnity against any claim that may be made against IGT or the
Exchange Agent with respect to the Missing Certificate.

     2.3 No Further Rights in Silicon Stock.  As of the Effective Time, all
shares of Silicon Common Stock and Series D and Series E Preferred Stock will no
longer be outstanding and will automatically be canceled and retired and will
cease to exist, and each holder of a Silicon Certificate representing shares of
Silicon Common Stock and Series D and Series E Preferred Stock as of the
Effective Time will cease to have any rights with respect to the Silicon Common
Stock and Series D and Series E Preferred Stock, respectively, except the right
to receive per share consideration specified in Section 2.1 hereof.

     2.4 Undelivered Merger Consideration.  Any per share consideration that
remains undistributed by the Exchange Agent to former holders of Silicon Common
Stock and Series D and Series E Preferred Stock as of the date that is one year
after the Effective Date shall be returned by the Exchange Agent to IGT upon
demand, and any holder of Silicon Certificates who has not theretofore
surrendered his or her shares of Silicon Common Stock or Series D and Series E
Preferred Stock in accordance with 2.2 shall thereafter look only to IGT for
satisfaction of his or her claims for per share consideration specified in
Section 2.1 hereof.

     2.5 Escheat.  Neither IGT nor the Surviving Corporation shall be liable to
any holder or former holder of Silicon Common Stock or Series D and Series E
Preferred Stock or to any other Person with respect to any per share
consideration delivered to any public official pursuant to any applicable
abandoned property law, escheat law, or similar legal requirement.

     2.6 Dissenters' Rights.  Notwithstanding anything in this Agreement to the
contrary, Shares issued and outstanding immediately prior to the Effective Time
and constituting "dissenting shares" (as defined in Section 1300 of the CGCL)
("Dissenting Shares"), shall not be converted into the right to receive the
Conversion Cash, as provided in Section 2.2 hereof, unless and until such holder
fails to perfect or effectively withdraws or otherwise loses his or her right to
appraisal and payment under the CGCL. If, after the Effective Time, any such
holder fails to perfect or effectively withdraws or loses his or her right to
appraisal, such Dissenting Shares thereupon shall be treated as if they had been
converted as of the Effective Time into the right to receive the Conversion Cash
to which such holder is entitled, without interest thereon. Silicon shall give
IGT (i) prompt written notice of any demands received by Silicon for appraisal
of any Shares, attempted withdrawals of such demands and any other instruments
served, pursuant to applicable law received by Silicon relating to dissenters'
rights and (ii) the opportunity to direct all negotiations with respect to
dissenters under the CGCL. Silicon shall not, without the prior written consent
of IGT, voluntarily make any payment with respect to Dissenting Shares, offer to
settle or settle any demands of any holders of Dissenting Shares or approve any
withdrawal of such demands.

                                        5
   56

                                   ARTICLE 3

                   REPRESENTATIONS AND WARRANTIES OF SILICON

     Silicon represents and warrants to IGT and NewCo that as of the date of
this Agreement and, as amended as of the Closing Date:

          3.1 Organization; Qualification; Subsidiaries.  Schedule 3.1 lists the
     jurisdiction of incorporation, the number of authorized and issued shares
     of capital stock and the members of the Board of Directors of Silicon.
     Silicon is duly organized, validly existing and in good standing under the
     laws of its state of organization, having all requisite power and authority
     to own its property and to carry on its business as it is now being
     conducted. Except as disclosed in Schedule 3.1, Silicon does not, directly
     or indirectly, own of record or beneficially, or have the right or
     obligation to acquire, any direct or indirect ownership interest, capital
     stock, membership interest, partnership interest, joint venture interest or
     other equity interest in any Person. All outstanding shares of capital
     stock of Silicon and any of its Subsidiaries (including WagerWorks) have
     been validly issued and are fully paid, nonassessable and free and clear of
     any Adverse Claim. No actions or proceedings to dissolve Silicon or any of
     its Subsidiaries (including WagerWorks) are pending. Silicon and all of its
     Subsidiaries (including WagerWorks) are duly qualified or licensed to do
     business and are in good standing in each jurisdiction in which the
     property owned, leased or operated by such entity or the conduct of its
     business requires qualification or licensing, except where the failure to
     be so licensed or qualified would not have a Material Adverse Effect.

          3.2 Silicon Capital Stock.  (a) The authorized capital stock of
     Silicon consists of as of the date hereof, and will consist of as of the
     Effective Time, (i) 750,000,000 shares of Silicon Common Stock, $.001 par
     value per share, and (ii) 6,884,473 shares of Silicon Preferred Stock,
     $.001 par value per share, of which 39,750 shares are designated as Series
     D Preferred Stock and 61,000 shares are designated as Series E Preferred
     Stock. The rights, privileges and preferences of Silicon Common Stock and
     Silicon Preferred Stock are as stated in Silicon's Articles of
     Incorporation, as amended to date.

          (b) As of the close of business on December 19, 2000, (i) 35,279,976
     shares of Silicon Common Stock were issued and outstanding, (ii) 39,750
     shares of Series D Preferred stock were issued and outstanding, (iii) no
     shares of Silicon Common Stock were held by Silicon in its treasury, and
     (iv) no shares of Series E Preferred Stock were issued and outstanding.

          (c) As of the close of business on December 19, 2000, (i) 75,790,509
     shares of Silicon Common Stock were reserved for issuance upon exercise of
     the Stock Options (as hereinafter defined), (ii) 54,985,667 shares of
     Silicon Common Stock were reserved for issuance pursuant to the Exchange
     Warrants issued and outstanding that were issued in the Exchange Offer on
     June 30, 2000, (iii) 174,285,127 shares of Silicon Common Stock were
     reserved for issuance upon conversion of shares of Series D Preferred
     Stock, (iv) 60,807.731 shares of Series E Preferred Stock were reserved for
     issuance upon exercise of the Series E Warrant (v) 60,807,731 shares of
     Silicon Common Stock were reserved for issuance upon conversion of shares
     of the Series E Preferred Stock.

          (d) All issued and outstanding shares of Silicon Common Stock and all
     shares which may be issued upon the exercise of Stock Options and
     conversion of the Series D Preferred Stock and Series E Preferred Stock
     will be duly authorized, validly issued, fully paid and nonassessable, and
     are not subject to and were not issued in violation of any preemptive
     rights.

          (e) Schedule 3.2 hereto sets forth a schedule of the outstanding Stock
     Options showing the name of the option holder, the grant date, the current
     exercise price , the anticipated exercise price as of the Closing Date,
     vesting schedule, the number of options vested as of the date hereof and
     the payments, if any, due to the Option holders upon consummation of the
     Merger (subject to modification as contemplated by Section 5.11 hereof).
     Schedule 3.2 hereto also sets forth a schedule of all warrants outstanding
     showing the name of the warrant holder, the grant date, the current
     exercise price, the anticipated exercise price as of the Closing Date,
     vesting schedule, the number of warrants vested or exercisable as of the
     date hereof and the payments, if any, due to the warrant holders upon
     consummation of the Merger (subject to modification as contemplated by
     Section 5.11 hereof).
                                        6
   57

          (f) Except for the Voting Agreements and the Stockholders Agreement,
     to the Knowledge of Silicon, there are no voting trusts, voting agreements,
     irrevocable proxies or other agreements with respect to any voting shares
     of capital stock of Silicon.

          (g) There are no bonds, debentures, notes or other indebtedness of
     Silicon or any of its subsidiaries having the right to vote (or convertible
     into or exchangeable for other securities having the right to vote) on any
     matters on which the stockholders of Silicon may vote.

          (h) Except as set forth herein, as of the date of this Agreement,
     there are no outstanding securities, options, warrants, calls, rights,
     commitments, agreements, arrangements or undertakings of any kind to which
     Silicon or any of its Subsidiaries (including WagerWorks) is a party or by
     which any of them is bound obligating Silicon or any of its Subsidiaries
     (including WagerWorks) to issue, deliver or sell, or cause to be issued,
     delivered or sold, additional shares of capital stock or other voting
     securities of Silicon or of any of its Subsidiaries (including WagerWorks)
     or obligating Silicon or any of its Subsidiaries (including WagerWorks) to
     issue, grant, extend or enter into any such security, option, warrant,
     call, right, commitment, agreement, arrangement or undertaking. Other than
     Silicon's obligation following the consummation of a change of control to
     redeem the Series D Preferred Stock and Series E Preferred Stock which
     obligation B III has, with respect to the Merger, waived in accordance with
     the terms of the Preferred Stock Voting Agreement, there are no outstanding
     contractual obligations of Silicon or any of its Subsidiaries to
     repurchase, redeem or otherwise acquire any shares of capital stock (or
     options to acquire any such shares) of Silicon or any of its Subsidiaries.
     Except as set forth in Schedule 3.2, there are no agreements, arrangements
     or commitments of any character (contingent or otherwise) pursuant to which
     any person is or may be entitled to receive any payment based on the
     revenues, earnings or financial performance of Silicon or any of its
     Subsidiaries (including WagerWorks) or assets or calculated in accordance
     therewith (other than ordinary course payments or commissions to sales
     representatives of Silicon based upon revenues generated by them without
     augmentation as a result of the transactions contemplated hereby) or to
     cause Silicon or any of its Subsidiaries (including WagerWorks) to file a
     registration statement under the Securities Act of 1933, as amended (the
     "Securities Act"), or which otherwise relate to the registration of any
     securities of Silicon.

          (i) WagerWorks Capital Stock.  The authorized capital stock of
     WagerWorks consists of as of the date hereof, and will consist of as of the
     Effective Time, (i) 50,000,000 shares of common stock, $0.001 par value per
     share, and (ii) 10,000,000 shares of preferred stock, $0.001 par value per
     share, of which 4,233,128 shares are designated as Series A Preferred
     Stock. The rights, privileges and preferences of the common stock and
     preferred stock of WagerWorks are as stated in WagerWork's Articles of
     Incorporation, as amended to date. As of the close of business on December
     19, 2000, (i) 10,000,000 shares of common stock were issued and
     outstanding, (ii) 3,742,330 shares of Series A Preferred stock were issued
     and outstanding (such shares of Preferred Stock are convertible into
     3,742,330 shares of Common Stock), (iii) no shares of common stock were
     held by WagerWorks in its treasury, and (iv) no other shares of its capital
     stock were issued and outstanding.

          (j) Other Subsidiary Capital Stock.  The Subsidiaries are set forth on
     Schedule 3.2 hereto. Each of the Subsidiaries (including WagerWorks) is a
     corporation, limited liability company or partnership duly incorporated or
     formed, validly existing and in good standing under the laws of the
     jurisdiction of its organization, has full corporate, limited liability
     company or partnership power and authority, as the case may be, to own and
     lease its properties, and carry on its business as presently conducted, is
     duly qualified, registered or licensed as a foreign corporation, limited
     liability company or partnership to do business and is in good standing in
     each jurisdiction in which the ownership or leasing of its properties or
     the character of its present operations make such qualification,
     registration or licensing necessary, except where the failure so to qualify
     or be in good standing would not have a Material Adverse Effect. A list of
     all jurisdictions in which each of the Subsidiaries is qualified,
     registered or licensed to do business as a foreign corporation, limited
     liability company or partnership is attached hereto as Schedule 3.2. Except
     as disclosed on Schedule 3.2, Silicon owns, directly or indirectly, all of
     the outstanding shares of Capital Stock or other evidences of equity
     ownership of each of its Subsidiaries free of any Lien, restriction

                                        7
   58

     (other than restrictions generally applicable to securities under federal,
     provincial or state securities laws) or encumbrance, and said shares have
     been duly issued and are validly outstanding.

     3.3 Authority; Enforceability.

     (a) Silicon has all requisite corporate power and authority to enter into
and carry out its obligations under this Agreement or any of the other
agreements referred to in this Agreement to which it is a party. The execution,
delivery and performance of this Agreement or any of the other agreements
referred to in this Agreement to which it is a party and the consummation of the
transactions contemplated hereby or thereby has been duly authorized by all
necessary corporate action on the part of Silicon, except for the approval of
this Agreement by the stockholders of Silicon.

     (b) This Agreement and each other agreement executed or to be executed by
Silicon in connection with the transactions contemplated by this Agreement have
been, or when executed will be, duly executed and delivered by Silicon and
constitute, or when executed and delivered will constitute, valid and binding
obligations of Silicon, enforceable against Silicon in accordance with their
respective terms, except as enforceability may be limited by applicable
bankruptcy, insolvency, reorganization, moratorium and similar laws affecting
the enforcement of creditors' rights generally and equitable principles which
may limit the availability of certain equitable remedies in certain instances.

     3.4 No Conflicts or Consents.

     (a) Except as set forth on Schedule 3.4, neither the execution, delivery or
performance of this Agreement or any of the other agreements referred to in this
Agreement to which Silicon is a party by Silicon nor the consummation of the
transactions contemplated by this Agreement or any of the other agreements
referred to in this Agreement to which Silicon is a party:

          (i) will violate, conflict with, or result in a breach of any
     provision of, constitute a default (or an event that, with notice or lapse
     of time or both, would constitute a default) under, result in the
     termination of, or accelerate the performance required by, or result in the
     creation of any Adverse Claim against any of the material properties or
     material assets of Silicon under, (A) its articles of incorporation or
     bylaws, (B) any material note, bond, mortgage, indenture, deed of trust, or
     other debt obligation (other than ordinary course trade credit) to which
     Silicon is a party or by which any of its material assets are bound, or (C)
     any material lease, agreement or other instrument or other obligation that
     is material to the business or operations of Silicon and to which Silicon
     is a party, or by which any of its assets are bound, including any contract
     for the provision of any form of gaming services or products between
     Silicon or any of its Subsidiaries and any third party; or

          (ii) subject to obtaining the required Governmental and Gaming
     Approvals required, violate any order, writ, injunction, decree, judgment,
     statute, rule or regulation of any Governmental Entity to which Silicon is
     subject or by which any of its assets are bound (including, without
     limitation, those of the National Indian Gaming Commission, or any other
     tribal or governmental authority regulating any form of gaming).

     (b) No filing or registration with, or authorization, consent or approval
of, any Governmental Entity is required by or with respect to Silicon in
connection with the execution and delivery of this Agreement by Silicon, or is
necessary for the consummation of the Merger and the other transactions
contemplated by this Agreement, except for: (i) the filing of a premerger
notification and report form (the "HSR Report") by each of IGT and Silicon under
the Hart-Scott Rodino Antitrust Improvements Act of 1976, as amended (the "HSR
Act"), if applicable, (ii) the filing and recordation requirements of the Law
with respect to the Articles of Merger, (iii) the filing of the Proxy Statement
with the SEC and any other filings required by the Securities Act or the
Exchange Act, (iv) the filing with and approval of any Gaming Authority,
including approval by the Nevada State Gaming Control Board and the Nevada
Gaming Commission under the Nevada Gaming Control Act and the rules and
regulations promulgated thereunder and (v) the filing of appropriate documents
with the relevant authorities of other states in which Silicon is qualified to
do business. Neither Silicon nor any Subsidiary nor, to the Knowledge of
Silicon, any director or officer of Silicon or of any Subsidiary has received
any written claim, demand, notice, complaint, court order or administrative
order from any Governmental
                                        8
   59

Entity in the past three years, asserting that a license of it or them, as
applicable, under any Gaming Laws is being or may be revoked or suspended other
than such claims, demands, notices, complaints, court orders or administrative
orders which would not have a Material Adverse Effect on Silicon.

     3.5 Permits; Compliance with Laws.  Each of Silicon and its Subsidiaries
has in effect all federal, state, local and foreign governmental approvals,
authorizations, certificates, filings, franchises, licenses, notices, permits
and rights ("Permits") necessary for it to own, lease or operate its properties
and assets and to carry on its business as now conducted, and there has occurred
no default under any such Permit, except for the lack of Permits and for
defaults under Permits, which lack or default would not have a Material Adverse
Effect on Silicon. To the Knowledge of Silicon, no Governmental Entity is
considering limiting, suspending or revoking any of Silicon's or its
Subsidiaries' Permits. Except as disclosed in Silicon's SEC Documents filed
prior to the date of this Agreement and publicly available, Silicon and its
Subsidiaries are in compliance with all applicable statutes, laws, ordinances,
rules, orders and regulations of any Governmental Entity, except for
noncompliance which would not have a Material Adverse Effect on Silicon. Silicon
and each of its Subsidiaries are, and each of their respective directors,
officers, and persons performing management functions similar to officers are,
in material compliance with all applicable Gaming Laws.

     3.6 Title to Properties.  Silicon does not own any real property. Schedule
3.6 sets forth a list of each real property lease to which Silicon or any of its
Subsidiaries is a party setting forth the location of the leased premises, the
term of the lease, the square footage of the leased premises and the current
monthly lease payments. Silicon and its Subsidiaries have good and marketable
title to, or valid leasehold interests in, all their properties and assets
except where such failure would not have a Material Adverse Effect on Silicon.

     3.7 Corporate Formalities; Corporate Documents and Stockholder Agreements.

     (a) Each of Silicon and its Subsidiaries (including WagerWorks) has
maintained its separate corporate existence and complied with all necessary
corporate formalities.

     (b) Silicon has delivered to IGT true and complete copies of its articles
of incorporation and bylaws, as amended or restated through the date of this
Agreement, as well as the articles of incorporation and bylaws governing each
Subsidiary (including WagerWorks). The minute books of each of Silicon and its
Subsidiaries (including WagerWorks) contain complete and accurate records of all
corporate actions of the equity owners of the various entities and of the boards
of directors or other governing bodies, including committees of such boards or
governing bodies of the various entities. The stock transfer records of Silicon
contain complete and accurate records of all issuances, and redemptions of stock
by Silicon.

     (c) Except as set forth on Schedule 3.7, there are no agreements among or
between any of the Silicon stockholders with respect to the capital stock of
Silicon to which Silicon is a party or of which Silicon has Knowledge.

     3.8 SEC Documents; Financial Statements; Liabilities.

     (a) Silicon has timely filed all required reports, schedules, forms,
statements and other documents with the SEC since January 1, 1997 (the "Silicon
SEC Documents"). The Silicon SEC Documents, and any such reports, forms and
documents filed by Silicon with the SEC after the date of this Agreement,
complied, or will comply, at the time of filing as to form in all material
respects with the requirements of the Securities Act or the Exchange Act, as the
case may be, and the rules and regulations of the SEC promulgated thereunder
applicable to the Silicon SEC Documents, and except to the extent that
information contained in any Silicon SEC Document has been superseded by a later
filed Silicon SEC Document, none of the Silicon SEC Documents at the time of
filing contained any untrue statement of a material fact or omitted to state any
material fact required to be stated therein or necessary in order to make the
statements therein, in light of the circumstances under which they were made,
not misleading.

     (b) The Silicon Financial Statements included in the Silicon SEC Documents
complied at the time of filing with the SEC as to form in all material respects
with the applicable accounting requirements and published rules and regulations
of the SEC with respect thereto, were prepared in accordance with GAAP applied
on a basis consistent with prior periods, and fairly present the consolidated
financial position of Silicon

                                        9
   60

at such dates and the consolidated results of operations and cash flow for the
respective periods then ended, subject, in the case of the Silicon Interim
Financial Statements, to normal, recurring year-end audit adjustments that are
not, individually or in the aggregate, material in amount. The Silicon Audited
Financial Statements have been audited by Deloitte & Touche, LLP, independent
auditors of Silicon, in accordance with generally accepted auditing standards.
Silicon is not, nor are any of its respective assets subject to, any liability,
commitment, debt or obligation (of any kind whatsoever whether absolute or
contingent, accrued, fixed, known, unknown, matured or unmatured) of a type
required by GAAP to be reflected in the Silicon Financial Statements, except,
(i) as and to the extent reflected on the Silicon Latest Balance Sheet or the
footnotes that are a part of the Silicon Financial Statements, (ii) as may have
been incurred or may have arisen since the date of the Silicon Latest Balance
Sheet in the ordinary course of business and that are not material individually
or in the aggregate or (iii) are permitted or contemplated by this Agreement.
Except as set forth in the Silicon SEC Documents, Silicon has not made any
change in the accounting policies or practices applied in the preparation of the
Silicon Financial Statements. Schedule 3.8 hereto sets forth a list of any
liability, commitment, debt or obligation (of any kind whatsoever whether
absolute or contingent, accrued, fixed, known, unknown, matured or unmatured) of
a type not required by GAAP to be reflected in the Silicon Financial Statements
that exists as of the date of this Agreement (which schedule shall be updated as
of the date of the Pre-Closing Balance Sheet.

     (c) The Silicon Latest Balance Sheet includes appropriate reserves for all
Taxes and other known liabilities incurred as of such date but not yet payable.

     3.9 Absence of Certain Changes or Events.  Since the date of the Silicon
Latest Balance Sheet, Silicon has conducted its business only in the ordinary
course, and, except as set forth on Schedule 3.9, has not:

          (a) amended its certificate of incorporation, bylaws or similar
     organizational documents;

          (b) incurred any liability or obligation of any nature (whether
     absolute or contingent, accrued, fixed, known, unknown, matured or
     unmatured), including, without limitation, increasing indebtedness for
     borrowed money, except in the ordinary course of business and not exceeding
     $250,000 individually;

          (c) brought about any split, combination or reclassification of any of
     its capital stock or any issuance or the authorization of any issuance of
     any other securities in respect of, in lieu of, or in substitution for its
     shares of capital stock;

          (d) suffered or permitted any of its assets to be or remain subject to
     any mortgage or other encumbrance, except for Permitted Liens;

          (e) merged or consolidated with another entity or acquired or agreed
     to acquire any business or any corporation, partnership or other business
     organization, or sold, leased, transferred or otherwise disposed of any
     assets except for assets sold for fair value in the ordinary course of
     business;

          (f) made any capital expenditure or commitment therefore, except in
     the ordinary course of business and, in the aggregate, in excess of
     $500,000;

          (g) declared or paid any dividend or made any distribution with
     respect to any of its equity interests, or redeemed, purchased or otherwise
     acquired any of its equity interests, or issued, sold or granted any equity
     interests or any option, warrant or other right to purchase or acquire any
     such interest;

          (h) adopted any employee benefit plan or made any change in any
     existing employee benefit plans;

          (i) made any loan to any Person;

          (j) except for employment agreements entered into in the ordinary
     course of business and consistent with past practices with employees of
     Silicon who are not directors or officers of Silicon, entered into or
     amended any employment, severance or similar agreement or arrangement with
     any director, officer or employee, or granted any increase in the rate of
     wages, salaries, bonuses, profit sharing arrangements, severance or
     termination pay arrangements or other compensation or benefits of any
     director, officer or employee;

                                       10
   61

          (k) canceled, waived, released or otherwise compromised any debt,
     claim or right, except in the ordinary course of business consistent with
     past practices;

          (l) made any change in any method of accounting or auditing practice;

          (m) suffered the termination, suspension or revocation of any license
     or permit necessary for the operation of its business;

          (n) entered into any transaction other than on an arm's-length basis;

          (o) suffered any damage, destruction or loss (whether or not covered
     by insurance) which has had or could have a Material Adverse Effect on
     Silicon;

          (p) agreed, whether or not in writing, to do any of the foregoing;

          (q) been the subject of, or incurred any liability under or with
     respect to, any determination made by an arbitrator with respect to a
     grievance filed under any collective bargaining or other labor agreement to
     which Silicon is a party;

          (r) suffered any Material Adverse Effect; or

          (s) taken any other action which, if Article 5 had then been in
     effect, would have been prohibited by such Article if taken without IGT's
     consent (and no agreement, understanding, obligation or commitment to take
     any such action exists).

     3.10 Legal Proceedings.  Except as set forth on Schedule 3.10, there is no
lawsuit, action, suit, claim or other proceeding at law or in equity, or
investigation, before or by any court or Governmental Entity or before any
arbitrator that is pending or, to the Knowledge of Silicon, threatened against
Silicon, or any unsatisfied judgment, order or decree or any open injunction
binding upon Silicon. Except as specifically set forth on Schedule 3.10, no
lawsuits, actions, suits, claims, proceedings, investigations, unsatisfied
judgments, orders, decrees or open injunctions will or are reasonably likely to
have a Material Adverse Effect or adversely effect the ability of Silicon to
enter into and perform its obligations under this Agreement.

     3.11 Accounts Receivable.  All of the accounts receivable reflected on the
Silicon Financial Statements or arising thereafter that have not been collected
have arisen only from bona fide transactions in the ordinary course of business,
represent valid obligations owing to Silicon and have been accrued in accordance
with GAAP.

     3.12 Contracts.

     (a) Schedule 3.12 lists and describes all Material Contracts. A complete
and correct copy of each Material Contract has been furnished to or made
available to IGT. To the Knowledge of Silicon, each Material Contract is valid,
binding and enforceable, except to the extent that enforcement may be limited by
bankruptcy, reorganization, insolvency and other similar laws and court
decisions relating to or affecting the enforcement of creditors' rights
generally and by general equitable principles. Silicon and, to the Knowledge of
Silicon, each other party to each Material Contract are in compliance in all
material respects with the provisions of each Material Contract by which such
party is bound.

     (b) Except as may be set forth in the Silicon SEC Documents or described on
Schedule 3.12, Silicon is not a party to:

          (i) any collective bargaining agreement;

          (ii) any written or oral employment or other agreement or contract
     with or commitment to any employee;

          (iii) any agreement, contract or commitment containing any covenant
     limiting its freedom to engage in any line of business or to compete with
     any Person;

          (iv) any oral or written obligation of guaranty or indemnification
     arising from any agreement, contract or commitment, except as provided in
     its certificate of incorporation or bylaws;

                                       11
   62

          (v) any joint venture, partnership or similar contract involving a
     sharing of profits or expenses;

          (vi) any non-disclosure agreement, non-competition agreement,
     agreement with an officer, director or employee of Silicon, tax indemnity,
     tax sharing or tax allocation agreement, or any severance, bonus or
     commission agreement;

          (vii) any indenture, mortgage, loan, credit, sale-leaseback or similar
     contract under which Silicon has borrowed any money or issued any note,
     bond or other evidence of indebtedness for borrowed money or guaranteed
     indebtedness for money borrowed by others; or

          (viii) any hedge, swap, exchange, futures or similar agreements or
     contracts.

     3.13 Environmental Matters.

     (a) Silicon and each of its Subsidiaries is, and has been, and each of
Silicon's former subsidiaries, while Subsidiaries of Silicon, was, in compliance
with all applicable Environmental Laws, except for noncompliance which would not
have a Material Adverse Effect on Silicon. The term "Environmental Laws" means
any federal, state, local or foreign statute, code, ordinance, rule, regulation,
policy, guideline, permit, consent, approval, license, judgment, order, writ,
decree, injunction or other authorization, including the requirement to register
underground storage tanks, relating to: (A) emissions, discharges, releases or
threatened releases of Hazardous Material (as defined below) into the
environment, including, without limitation, into ambient air, soil, sediments,
land surface or subsurface, buildings or facilities, surface water, groundwater,
publicly owned treatment works, septic systems or land; (B) the generation,
treatment, storage, disposal, use, handling, manufacturing, transportation or
shipment of Hazardous Material; (C) protection of the environment; or (D)
employee health and safety.

     (b) During the period of ownership or operation by Silicon and its
Subsidiaries of any of their respective current or previously owned or leased
properties, there have been no releases of Hazardous Material in, on, under or
affecting such properties or, to the Knowledge of Silicon, any surrounding site,
except in each case for those which would not have a Material Adverse Effect on
Silicon. Silicon has not shipped any Hazardous Material to any disposal site for
which it is or will be subject to any liability, except for such liabilities
which would not have a Material Adverse Effect on Silicon. Prior to the period
of ownership or operation by Silicon and its Subsidiaries of any of their
respective current or previously owned or leased properties, no Hazardous
Material was generated, treated, stored, disposed of, used, handled, released or
manufactured at, or transported, shipped or disposed of from, such current or
previously owned or leased properties, and there were no releases of Hazardous
Material in, on, under or affecting any such property or any surrounding site,
except in each case for those which would not have a Material Adverse Effect on
Silicon. The term "Hazardous Material" means (A) hazardous materials,
contaminants, constituents, medical wastes, hazardous or infectious wastes and
hazardous substances as those terms are defined in the following statutes and
their implementing regulations: the Hazardous Materials Transportation Act, 49
U.S.C. Section 1801 et seq., the Resource Conservation and Recovery Act, 42
U.S.C. Section 6901 et seq., the Comprehensive Environmental Response,
Compensation and Liability Act, as amended by the Superfund Amendments and
Reauthorization Act, 42 U.S.C. Section 9601 et seq., the Clean Water Act, 33
U.S.C. Section 1251 et seq. and the Clean Air Act, 42 U.S.C. Section 7401 et
seq., (B) petroleum, including crude oil and any fractions thereof, (C) natural
gas, synthetic gas and any mixtures thereof, (D) asbestos and/or
asbestos-containing material and (E) polychlorinated biphenyls ("PCBs") or
materials or fluids containing PCBs in excess of 50 ppm.

     3.14 Employee Matters.

     (a) Schedule 3.14(a) sets forth:

          (i) a list of the name, title, current annual compensation rate
     (including bonus and commissions) of each employee of Silicon;

          (ii) employment, consulting, employee confidentiality or similar
     agreements;

          (iii) any employee handbook(s); and

                                       12
   63

          (iv) any reports and/or plans prepared or adopted pursuant to the
     Equal Employment Opportunity Act of 1972, as amended. Accruals with respect
     to the bonus, sick leave and vacation benefits of the employees of Silicon
     have been made in accordance with the terms of the applicable Employee
     Plans and GAAP.

     (b) Except as set forth on Schedule 3.14(b):

          (i) (A) Silicon is in material compliance with all Applicable Laws
     respecting employment and employment practices, terms and conditions of
     employment, wages and hours and occupational safety and health; (B) Silicon
     is not engaged in any unfair labor practice within the meaning of Section 8
     of the National Labor Relations Act; and (C) there is no proceeding pending
     or to the Knowledge of Silicon, threatened, or any investigation pending or
     to the Knowledge of Silicon threatened, against Silicon, relating to
     subsection (A) or (B) above, and Silicon has no Knowledge of any basis for
     any such proceeding or investigation;

          (ii) none of the employees of Silicon is a member of, or represented
     by, any labor union and to the Knowledge of Silicon, there are no efforts
     being made to unionize any of such employees; and

          (iii) there are no charges, formal or informal, internal complaints
     of, or proceedings involving, discrimination or harassment (including but
     not limited to discrimination or harassment based upon sex, age, marital
     status, race, religion, color, creed, national origin, sexual preference,
     handicap or veteran status) pending or, to Silicon's Knowledge, threatened.
     Nor are there any such investigations pending or to the Knowledge of
     Silicon threatened, including, but not limited to, investigations before
     the Equal Employment Opportunity Commission or any federal, state or local
     agency or court, with respect to Silicon.

     3.15 ERISA and Related Matters.

     (a) Schedule 3.15(a) lists each Employee Plan that Silicon maintains,
administers or contributes to. Silicon has provided IGT a true and complete copy
of each such Employee Plan, current summary plan description, (and, if
applicable, related trust documents) and all amendments thereto together with
(i) the most recent annual report, if any, that has been prepared in connection
with each Employee Plan; (ii) all material communications received from or sent
to the Internal Revenue Service or the Department of Labor within the last two
years; and (iii) the most recent Internal Revenue Service determination letter
with respect to each Employee Plan, if any, and the most recent application for
a determination letter, if any.

     (b) Schedule 3.15(b) identifies each Benefit Arrangement that Silicon
maintains or administers. Silicon has furnished to IGT copies or descriptions of
each Benefit Arrangement. To the Knowledge of Silicon, each Benefit Arrangement
has been maintained in substantial compliance with its terms and with the
requirements prescribed by any and all statutes, orders, rules and regulations
that are applicable to such Benefit Arrangement.

     (c) Except as set forth on Schedule 3.15(c), neither Silicon nor any of its
Subsidiaries maintains or has ever maintained an "employee benefit plan" (as
defined in Section 3(3) of ERISA) which is or was (i) a plan subject to Title IV
of ERISA or (ii) a "multi-employer plan" (as defined in Section 3(37) of ERISA).

     (d) Benefits under any Employee Plan or Benefit Arrangement are as
represented in said documents and have not been increased or modified (whether
written or not written) subsequent to the dates of such documents. Silicon and
its Subsidiaries have not communicated to any employee or former employee any
intention or commitment to modify any Employee Plan or Benefit Arrangement or to
establish or implement any other employee or retiree benefit or compensation
arrangement.

     (e) Each Employee Plan and related trust which is intended to be qualified
under Section 401(a) and 501(a) of the Code satisfies in form the requirements
of these sections, except to the extent amendments are not required by law to be
made until a date after the Closing Date, and has received a favorable
determination letter from the Internal Revenue Service regarding such qualified
status; and to the Knowledge of Silicon, no event has occurred regarding the
adoption of such plan that would adversely affect such qualification. Each
Employee Plan has been maintained and administered in compliance with its terms
and with the requirements
                                       13
   64

prescribed by any and all applicable statutes, orders, rules and regulations,
including but not limited to ERISA and the Code. No Employee Plan has been
operated in a manner which will give rise to penalties, excise taxes or adverse
tax consequences that would have a Material Adverse Effect, and no Employee Plan
has violated in a material manner any provision of the Code or of ERISA.

     (f) Except for amounts accrued in the normal course of operation of any
Employee Plan or Benefit Arrangement and properly reflected in the financial
statements of Silicon, full payment has been made of all amounts that Silicon
has, or has been required to have, paid as contributions to any Employee Plan or
Benefit Arrangement under Applicable Law or under the terms of any such plan or
any arrangement. All amounts withheld by Silicon from its employees have been
paid to the appropriate Employee Plan or Benefit Arrangement by the due date
prescribed by the Department of Labor to avoid penalties.

     (g) Silicon does not have any current or projected liability in respect of
post-retirement or post-employment health, life or other welfare benefits for
retired, current or former employees, except as may be required under Part 6 of
Subtitle B of Title I of ERISA.

     (h) Except as set forth on Schedule 3.15(h) or in this Agreement, no
employee or former employee of Silicon or its Subsidiaries will become entitled
to any bonus, retirement, severance, job security or similar benefit or enhanced
benefit (including acceleration of compensation, an award, vesting or exercise
of an incentive award) or any fee or payment of any kind solely as a result of
any of the transactions contemplated by this Agreement.

     3.16 Taxes.  For purposes of this Section 3.16, the "Silicon Group" means,
individually and collectively, Silicon and any individual, trust, corporation,
partnership or any other entity as to which Silicon is liable for Taxes incurred
by such individual or entity either as transferee or pursuant to Treasury
Regulation Section 1.1502-6 or pursuant to any other provision of federal,
territorial, state, local, or foreign law or regulations. Except as set forth on
Schedule 3.16:

          (a) All Returns required to be filed by or on behalf of members of the
     Silicon Group have been duly filed on a timely basis and such Returns
     (including all attached statements and schedules) are true, complete and
     correct. All Taxes shown to be payable on the Returns or on subsequent
     assessments with respect thereto have been paid in full on a timely basis,
     and no other Taxes are payable by the Silicon Group with respect to items
     or periods covered by such Returns (whether or not shown on or reportable
     on such Returns) or with respect to any period prior to the date of this
     Agreement. No member of the Silicon Group is currently the beneficiary of
     any extension of time within which to file any Return.

          (b) Each member of the Silicon Group has withheld and paid over all
     Taxes required to have been withheld and paid over (including any estimated
     taxes), and has complied with all information reporting and backup
     withholding requirements, including maintenance of required records with
     respect thereto, in connection with amounts paid or owing to any employee,
     creditor, independent contractor, or other third party.

          (c) There are no Liens on any of the assets of Silicon or its
     subsidiaries with respect to Taxes other than Liens for Taxes not yet due
     and payable, or for Taxes that are being contested in good faith through
     appropriate proceedings and for which appropriate reserves have been
     established.

          (d) The Returns of the Silicon Group are not currently the subject of
     any audit by a governmental or taxing authority.

          (e) No deficiencies exist or are expected to be asserted with respect
     to Taxes of the Silicon Group, and there is no basis for the assertion of
     any material deficiency of Taxes. No notice (either in writing or verbally,
     formally or informally) has been received by any member of the Silicon
     Group that it has not filed a Return or paid Taxes required to be filed or
     paid by it.

          (f) No member of the Silicon Group is a party to any pending action or
     proceeding for assessment or collection of Taxes, nor has such action or
     proceeding been asserted or threatened (either in writing or verbally,
     formally or informally) against any member of the Silicon Group, or any of
     its assets.

                                       14
   65

          (g) No waiver or extension of any statute of limitations is in effect
     with respect to Taxes or Returns of any member of the Silicon Group.

          (h) Silicon and each member of the Silicon Group has disclosed on its
     federal income tax returns all positions taken thereon that could give rise
     to a substantial understatement penalty within the meaning of Section 6662
     of the Code.

          (i) There are no requests for rulings, subpoenas or requests for
     information pending with respect to any member of the Silicon Group.

          (j) No currently effective power of attorney has been granted by any
     member of the Silicon Group with respect to any matter relating to Taxes.

          (k) The amount of Silicon's liability or the liability of any member
     of the Silicon Group for unpaid Taxes for all periods ending on or before
     the date of this Agreement do not, in the aggregate exceed the amount of
     current liability accruals for Taxes (excluding reserves for deferral of
     Taxes) as of the date of this Agreement, and the amount of Silicon's
     liability or the liability of any member of the Silicon Group for unpaid
     Taxes for all periods ending on or before the Closing Date will not, in the
     aggregate, exceed the amount of the current liability accruals for Taxes
     (excluding reserves for deferred Taxes), as such accruals are reflected on
     the balance sheets of Silicon or its subsidiaries, respectively, as of the
     Closing Date.

          (l) No member of the Silicon Group has prepared or filed any Return
     inconsistent with past practice or, on any such Return, taken any position,
     made any election or adopted any method that is inconsistent with positions
     taken, elections made or methods used in preparing or filing similar
     Returns in prior periods, or settled or compromised any material federal,
     state or local income tax liability.

          (m) Prior to the Effective Time, Silicon has not distributed the stock
     of any corporation in a distribution of stock qualifying for tax-free
     treatment under Section 355 of the Code.

          (n) No member of the Silicon Group has filed a consent under Section
     341(f) of the Code concerning collapsible corporations. No member of the
     Silicon Group has made any payments, is obligated to make any payments, or
     is a party to any agreement that under certain circumstances could obligate
     it to make any payments that will not be deductible under Section 280G of
     the Code. No member of the Silicon Group has been a United States real
     property holding corporation within the meaning of Section 897 of the Code
     during the applicable period specified in Section 897(c)(1)(A)(ii) of the
     Code. No member of the Silicon Group is a party to any Tax allocation or
     sharing agreement.

     3.17 Transactions with Related Parties.

     (a) Schedule 3.17(a) and the Silicon SEC Documents list each transaction
between January 1, 1997 and the date of this Agreement that would be required to
be reported as a Certain Relationship or Related Transaction pursuant to Item
404 of Regulation S-K.

     (b) Schedule 3.17(b) lists (i) to Silicon's Knowledge, all material claims
of any nature that any officer or director of Silicon or any Affiliate of such
officer or director has with or against Silicon as of the date of this Agreement
that are not identified on the Silicon Latest Balance Sheet and (ii) all
material claims of any nature that Silicon has with or against any officer or
director of Silicon or any Affiliate of such officer or director as of the date
of this Agreement that are not identified on the Silicon Latest Balance Sheet.

     3.18 Voting Requirements.  The affirmative vote of the holders of a
majority of the outstanding shares of Silicon Common Stock entitled to vote on
the Merger, and the affirmative vote of the holders of a majority of the
outstanding shares of Series D Preferred Stock and Series E Preferred Stock, if
any, are the only votes of the holders of any class or series of Silicon's
capital stock necessary to approve this Agreement and the transactions described
in this Agreement.

                                       15
   66

     3.19 Intellectual Property.

     (a) Schedule 3.19 lists (A) all patents held by Silicon and its
Subsidiaries and all pending patent applications by Silicon or any Subsidiary,
including for each such patent the serial or patent number, country, filing and
expiration date and title; (B) all registered trademarks of Silicon or any of
its Subsidiaries, and all pending applications for registration by Silicon or
any of its Subsidiaries of trademarks, including for each such trademark the
registration or application number, country, filing and expiration date; (C) all
registered copyrights of Silicon or any of its Subsidiaries and all applications
by Silicon or any of its Subsidiaries for registration of copyrights, including
the registration number, country and filing and expiration date of each such
copyright; (D) all licenses by Silicon or any of its Subsidiaries to any person
or entity of any of the rights identified in subparagraphs (A) through (C)
above; and (E) all licenses by any other person or entity to Silicon or any of
its Subsidiaries of any patents, trademarks, service marks, trade names,
copyrights, trade secrets, licenses, information, proprietary rights or
processes of any other person or entity.

     (b) Each license identified in Schedule 3.19 (each a "License") is a valid
and binding obligation of Silicon or the Subsidiary thereto, enforceable in
accordance with its terms. With respect to each License, there is no material
default (or event that with the giving of notice or passage of time would
constitute a material default) by Silicon or the Subsidiary thereto or, to the
Knowledge of Silicon, the other party thereto. Silicon has not received any
notice (and Silicon does not have Knowledge) of claims asserted by any person to
use any patents, trademarks, service marks, trade names, copyrights, technology,
know-how or processes licensed by or to Silicon or challenging or questioning
the validity or effectiveness of any License.

     (c) Silicon and its Subsidiaries have good and valid title to, or otherwise
possess adequate rights to use, all patents, trademarks, trade names,
copyrights, inventions, trade secrets, software licenses and other proprietary
information necessary to permit Silicon and its Subsidiaries to conduct the
business and operations of Silicon and its Subsidiaries in substantially the
same manner as it had been conducted prior to the date hereof.

     (d) Except as set forth on Schedule 3.19 neither Silicon nor any of its
Subsidiaries has, nor, to Silicon's Knowledge has it been alleged to have,
infringed upon any patent, trademark, trade name or copyright or misappropriated
or misused any invention, trade secret or other proprietary information entitled
to legal protection.

     (e) Silicon warrants and represents that all software, hardware and
firmware used in Silicon's products, except as set forth on Schedule 3.19, was
entirely internally-developed by Silicon and that all inventorship, ownership,
authorship, patent, copyright, trademark, trade secret and other rights relating
to the system are owned by Silicon free and clear of any obligation or agreement
to any other person and will not, as a result of the Merger, be the subject of
any obligation or agreement to any third party except for the royalty agreement
and obligations set forth in Schedule 3.19.

     (f) Schedule 3.19 lists all agreements, including all amendments thereto,
to which Silicon or its Subsidiaries is a party, which affect the ownership or
use of the Media Products (each, a "License Agreement"). Except as set forth on
Schedule 3.19 as a result of the transactions contemplated by this Agreement, no
additional payments are required under, nor will any changes occur that affect,
the terms of any License Agreement. Silicon is not, and to its Knowledge none of
the other parties to the agreements set forth on Schedule 3.19 are, in material
breach of such agreements. Except as set forth on Schedule 3.19 no License
Agreement requires the consent of a third party in connection with the
transactions contemplated by this Agreement. For the purpose of this paragraph,
"Media Products" shall mean any product of Silicon which utilizes any copyright,
trademark, video, film, photo, graphic, sound, text or other content relating to
or arising from any of the following television programs or short subject films:
(A) The Price is Right and (B) Family Feud.

     3.20 Insurance.  IGT has been provided copies of or access to all insurance
policies or binders that relate to the businesses of each member of the Silicon
Group. All premiums due under the policies and binders have been paid or accrued
for and all policies and binders are in full force and effect. As of the date of
this Agreement, no notice of cancellation or non-renewal of any policy or binder
and no notice of disallowance

                                       16
   67

of any claim under any insurance policy or binder, has been received by Silicon.
Except as provided in the applicable policy or binder, Silicon does not have any
liability for or exposure to any premium expense for expired policies and there
are no current claims by Silicon under any such policy or binder as to which
coverage has been denied or disputed by the underwriters of such policies, nor
are there any material insured losses for which claims have not been made.

     3.21 Bank Accounts; Power of Attorney.  Schedule 3.21 sets forth with
respect to each bank account or cash account maintained by Silicon at any bank,
brokerage or other financial firm, the name of the institution at which such
account is maintained, the number of the account, and the names of the
individuals having authority to withdraw funds from such account.

     3.22 Fairness Opinion; No Finder's Fee.  Silicon has received a written
opinion from US Bancorp Libra to the effect that the Merger Consideration is, as
of the date of this Agreement, fair from a financial point of view to
stockholders of Silicon. Except as set forth on Schedule 3.22, neither Silicon
nor any of its Subsidiaries (including WagerWorks) nor any of their respective
officers, directors or employees has employed any broker or finder, or incurred
any liability for any financial advisory fees, brokerage fees, commissions or
finder's fees, and no broker or finder has acted directly or indirectly for
Silicon or any of its Subsidiaries (including WagerWorks) in connection with
this Agreement or the transactions contemplated hereby.

     3.23 Noncompetition.  Except as set forth in Schedule 3.23, Silicon and its
Subsidiaries are not, and after the Effective Time neither the Surviving
Corporation nor IGT will be, by reason of any agreement to which Silicon is a
party, subject to any non-competition or similar contractual restriction on
their respective businesses.

     3.24 WagerWorks Transactions.  Except as set forth on Schedule 3.24(a),
neither Silicon nor any of its Subsidiaries have (a) transferred or otherwise
conveyed in any manner any property or assets to WagerWorks or (b) granted any
license or right to WagerWorks to use any patents, trademarks, service marks,
trade names, copyrights, technology, know-how or processes owned or licensed by
Silicon and, except as set forth on Schedule 3.24(b), WagerWorks is not party to
any material agreement. Except as set forth on Schedule 3.24(c), Silicon is not
a party to any written or oral agreement to which WagerWorks is a party and
Silicon has made no representation, warranty or undertaking, contingent or
otherwise, to any third party with respect to the business, operations or
financial condition of WagerWorks or any agreement to which WagerWorks is a
party.

     3.25 WagerWorks Intellectual Property.  Silicon represents and warrants
that WagerWorks has, pursuant to the Cross License Agreement, granted an
exclusive world wide license (including the right to sublicense) to Silicon to
use for any gaming-related purpose (excluding Internet Gaming) any patents,
trademarks, service mark, trade names, copyrights, technology, know-how or
processes owned or licensed by WagerWorks as of the date of the Cross-License
Agreement, including any such property that is the subject of pending patent
applications. Silicon further represents and warrants that Silicon has provided
to IGT copies of all agreements relating to all licenses referred to in this
Section 3.25. Silicon is not, and to its knowledge, WagerWorks is not, in
material breach of the license agreement identified on Schedule 3.24 hereto. For
the purpose of this Section 3.25 "Internet Gaming" shall mean gaming accessible
to end users solely via the world wide web protocol on the interconnected
worldwide network of computer networks that employ TCP/IP commonly known as the
Internet.

     3.26 Exchange Warrants.  Silicon represents and warrants that, by their
terms, all Exchange Warrants not previously exercised shall terminate upon the
consummation of the Merger and no warrants, options or other rights to purchase
shares of the capital stock of Silicon will exist.

     3.27 WagerWorks Corporate Management Services Agreement.  Silicon
represents and warrants that, by its terms, the Corporate Management Services
Agreement by and between Silicon and WagerWorks dated as of June, 2000 is
terminable by Silicon for convenience upon 30 days' written notice to
WagerWorks.

                                       17
   68

                                   ARTICLE 4

                REPRESENTATIONS AND WARRANTIES OF IGT AND NEWCO

     IGT and NewCo represent and warrant to Silicon, as of the date of this
Agreement and as of the Closing Date, as follows:

          4.1 Organization.  Each of IGT and NewCo is a corporation duly
     organized, validly existing and in good standing under the laws of its
     state of incorporation and has all requisite corporate power and authority
     to own its properties and carry on its business as now being conducted.

          4.2 Authority; Enforceability.

          (a) Each of IGT and NewCo has the requisite corporate power and
     authority to enter into this Agreement and to carry out its obligations
     under this Agreement and any of the other agreements referred to in this
     Agreement to which it is a party. The execution, delivery and performance
     of this Agreement and any of the other agreements referred to in this
     Agreement to which it is a party and the consummation of the transactions
     contemplated hereby or thereby have been (or, in the case of NewCo, will be
     prior to the Effective Time) duly authorized by all necessary corporate
     action on the part of IGT and NewCo.

          (b) This Agreement and each other agreement executed or to be executed
     by IGT and NewCo in connection with the transactions contemplated by this
     Agreement have been, or when executed will be, duly executed and delivered
     by IGT and NewCo and constitute, or when executed and delivered will
     constitute, valid and binding obligations of IGT and NewCo, enforceable
     against IGT and NewCo in accordance with their terms, except as may be
     limited by applicable bankruptcy, insolvency, reorganization, moratorium
     and similar laws affecting the enforcement of creditors' rights generally
     or by equitable principles which may limit the availability of certain
     equitable remedies in certain instances.

          4.3 No Conflicts or Consents.

          (a) Neither the execution, delivery or performance of this Agreement
     or any of the other agreements referred to in this Agreement by IGT and
     NewCo nor the consummation of the transactions contemplated by this
     Agreement or any of the other agreements referred to in this Agreement will
     violate, conflict with, or result in a breach of any provision of,
     constitute a default (or an event that, with notice or lapse of time or
     both, would constitute a default) under, result in the termination of, or
     accelerate the performance required by, or result in the creation of any
     Adverse Claim against any of the material properties or assets of IGT or
     NewCo under the articles of incorporation, bylaws or any other
     organizational documents of IGT or NewCo; any material note, bond,
     mortgage, indenture, deed of trust, or other debt obligation (other than
     ordinary course trade credit) to which IGT or NewCo is a party, or by which
     IGT or NewCo or any of their respective material assets are bound; or any
     material lease, agreement or other instrument or other obligation that is
     material to the business or operations of IGT or NewCo and to which IGT or
     NewCo is a party, or by which IGT or NewCo or any of their respective
     assets are bound; or, subject to obtaining the required Governmental and
     Gaming Approvals required, violate any order, writ, injunction, decree,
     judgment, statute, rule or regulation of any Governmental Entity to which
     either IGT or NewCo is subject or by which IGT or NewCo or any of their
     respective assets are bound.

          (b) No filing or registration with, or authorization, consent or
     approval of, any Governmental Entity is required by or with respect to IGT
     or NewCo in connection with the execution and delivery of this Agreement by
     IGT and NewCo, or is necessary for the consummation of the Merger and the
     other transactions contemplated by this Agreement, except for: (i) the
     filing of an HSR Report by each of IGT and Silicon under the HSR Act, if
     applicable (ii) the filing and recordation requirements of the CGCL with
     respect to the Articles of Merger, and (iii) the filing with and approval
     of any Gaming Authority, including approval by the Nevada State Gaming
     Control Board and the Nevada Gaming Commission under the Nevada Gaming
     Control Act and the rules and regulations promulgated thereunder.

                                       18
   69

          4.4 No Finder's Fee.  Neither IGT nor NewCo nor any of their
     respective officers, directors or employees has employed any broker or
     finder, or incurred any liability for any financial advisory fees, for a
     fairness opinion, brokerage fees, commissions or finder's fees, and no
     broker or finder has acted directly or indirectly for IGT or NewCo in
     connection with this Agreement or the transactions contemplated hereby.

          4.5 Information Supplied.  None of the information supplied or to be
     supplied by IGT or NewCo specifically for inclusion or incorporation by
     reference in the Proxy Statement will, at the time the Proxy Statement is
     first mailed to Silicon's stockholders and at the time of the Stockholders
     Meeting, contain any untrue statement of a material fact or omit to state
     any material fact required to be stated therein or necessary in order to
     make the statements therein, in light of the circumstances under which they
     are made, not misleading.

          4.6 Financing.  IGT has readily available funds sufficient in amount
     to pay the Aggregate Merger Consideration and to pay all fees and expenses
     of IGT and NewCo related to the transactions contemplated by this
     Agreement.

                                   ARTICLE 5

                                   COVENANTS

     5.1 Regulatory Approvals; Gaming Authority; Cooperation and Best Efforts.

     (a) IGT and Silicon shall use all reasonable efforts to file, as soon as
practicable after the date of this Agreement, all notices, reports and other
documents required to be filed with any Governmental Entity or any Gaming
Authority with respect to the Merger and the other transactions contemplated by
this Agreement (all of the foregoing, collectively "Gaming Approvals"), and to
submit promptly any additional information requested by any such Governmental
Entity or Gaming Authority. Without limiting the generality of the foregoing,
IGT and Silicon shall, within thirty Business Days of the date of this
Agreement, prepare and file the notifications required to be filed under the HSR
Act. IGT will pay any filings fees required in filing the HSR Report. Silicon
shall, if requested to do so by IGT, respond as promptly as practicable (A) to
any inquiries or requests received from the Federal Trade Commission or the
Department of Justice for additional information or documentation and (B) to any
inquiries or requests received from any state attorney general, foreign
antitrust authority or other Governmental Entity in connection with antitrust or
related matters. IGT shall not be required to respond to such inquiries except
in its sole and absolute discretion.

          (i) Each of Silicon and IGT shall (A) give the other party prompt
     notice of the commencement or threat of commencement of any Proceedings by
     or before any Governmental Entity or Gaming Authority with respect to the
     Merger or any of the other transactions contemplated by this Agreement, (B)
     keep the other party informed as to the status of any such Proceeding or
     threat, and (C) promptly inform the other party of any communication to or
     from the Federal Trade Commission, the Department of Justice or any other
     Governmental Entity or Gaming Authority regarding the Merger. Except as may
     be prohibited by any Governmental Entity or Gaming Authority or by any
     legal requirement, Silicon and IGT will consult and cooperate with one
     another, and will consider in good faith the views of one another, in
     connection with any analysis, appearance, presentation, memorandum, brief,
     argument, opinion or proposal made or submitted in connection with any
     Legal Proceeding under or relating to the HSR Act or any other foreign,
     federal or state antitrust or fair trade law.

          (ii) Notwithstanding the foregoing, neither party will be required to
     accept any conditions that may be imposed by the FTC or the DOJ in
     connection with such filings, nor shall IGT be obligated to take any action
     which would require the voluntary surrender, forfeiture or other
     termination by IGT of a Gaming Approval then held by IGT or any of its
     subsidiaries.

     (b) Each party will cooperate with the other and use its reasonable best
efforts to (i) receive all necessary and appropriate consents of third parties
to the transactions contemplated by this Agreement, (ii) satisfy all
requirements prescribed by law for, and all conditions set forth in this
Agreement to, the

                                       19
   70

consummation of the Merger, and (iii) effect the Merger in accordance with this
Agreement at the earliest practicable date.

     (c) Nothing contained in this Agreement shall give IGT, directly or
indirectly, the right to control or direct Silicon's operations prior to the
effectiveness of the Merger. Prior to the effectiveness of the merger, Silicon
shall exercise, consistent with the terms and conditions of this Agreement,
complete control and supervision of its operations.

     (d) Denial of License; Individuals.  If any employee or director of Silicon
shall become an Ineligible Person prior to the Closing, then (i) Silicon shall
use its best efforts to cause each Ineligible Person to, immediately resign from
any position, including as director or officer, in Silicon and each Ineligible
Person shall have no further management role in IGT, NewCo or Silicon, (ii) if
required to do so by any Governmental Entity as a condition to receipt of any
Gaming Approval, Silicon, IGT or NewCo, as applicable, shall use commercially
reasonable efforts to cause each Ineligible Person to, dispose of all of its
securities or other ownership interests in Silicon, IGT or Newco and (iii)
Silicon, IGT or NewCo, as applicable, shall use commercially reasonable efforts
to cause each Ineligible Person to, cooperate with Silicon, IGT and NewCo in
their efforts to obtain and retain in full force and effect the Gaming Approval.
"Ineligible Person" shall mean any person who owns any capital stock or other
interest in Silicon, IGT or NewCo, as applicable (i) who is denied a Gaming
Approval, disqualified from eligibility for a Gaming Approval or found
unsuitable by any Governmental Entity before the Closing Date, (ii) whose
continued involvement in the business of Silicon, IGT or NewCo, as applicable,
as an employee, director, officer or otherwise, may, in Silicon's or IGT's
reasonable opinion after consultation with counsel, have a Material Adverse
Effect on the likelihood that any Governmental Entity will issue a Gaming
Approval to Silicon, the Surviving Corporation, NewCo or IGT or (iii) is
expressly precluded from having any continuing interest in Silicon, the
Surviving Corporation, NewCo or IGT in any Gaming Approval granted by a
Governmental Entity as a condition to the issuance or continued validity of any
Gaming Approval by any Governmental Entity.

     5.2 Silicon Special Meeting.

     (a) As soon as practicable following the date of this Agreement, Silicon
will call, give notice of and convene a meeting of its stockholders (the
"Silicon Stockholders Meeting") to be held as promptly as practicable for the
purpose of voting upon a proposal to adopt this Agreement. The Silicon
Stockholders Meeting shall be held on a date selected by Silicon in consultation
with IGT.

     (b) Silicon shall use its best commercially reasonable efforts to solicit
proxies representing at least a majority of the outstanding shares of Silicon
Common Stock eligible to vote at the Silicon Stockholders Meeting. As promptly
as practicable after the execution of this Agreement, Silicon shall prepare and
file with the SEC the Proxy Statement relating to the Silicon Stockholders
Meeting. Subject to Section 5.2(c), (i) the Proxy Statement shall include a
recommendation (the "Board Recommendation") of the Board of Directors of Silicon
that Silicon's stockholders vote to adopt this Agreement at the Silicon Special
Meeting and (ii) the Silicon Board Recommendation shall not be withdrawn or
modified in a manner adverse to IGT, and no resolution by the Board of Directors
of Silicon or any committee thereof to withdraw or modify the Board
Recommendation shall be adopted or proposed. IGT shall furnish all information
concerning itself to Silicon as Silicon may reasonably request in connection
with the preparation of the Proxy Statement. Silicon will promptly respond to
any SEC comments on the Proxy Statement and Silicon will use its commercially
reasonable efforts to resolve all SEC comments as promptly as practicable to the
satisfaction of the SEC. As soon as reasonably practicable after clearance from
the SEC, Silicon shall mail the Proxy Statement to its stockholders. Silicon
shall provide IGT and its counsel reasonable opportunity to review and comment
on the Proxy Statement and any amendment or supplement to the Proxy Statement
prior to the filing thereof with the SEC. Silicon shall not mail any Proxy
Statement, or any amendment or supplement thereto, to which IGT reasonably
objects. Silicon and its counsel shall permit IGT and its counsel to participate
in all communications with the SEC and its Staff, including all meetings and
telephone conferences, relating to the Proxy Statement, the Merger or this
Agreement.

                                       20
   71

     (c) Silicon agrees to promptly advise IGT if at any time prior to the
Silicon Stockholders' Meeting any material information provided by it in the
Proxy Statement is or becomes incorrect or incomplete in any material respect
and to provide IGT with the information needed to correct such inaccuracy or
omission. Silicon will furnish IGT with such supplemental information as may be
necessary in order to cause the Proxy Statement, insofar as it relates to
Silicon and its subsidiaries, to comply with applicable law after the mailing
thereof to stockholders of Silicon. IGT agrees promptly to advise Silicon if at
any time prior to the Silicon Stockholders' Meeting any material information
provided by it in the Proxy Statement is or becomes incorrect or incomplete in
any material respect and to provide Silicon with the information needed to
correct such inaccuracy or omission. IGT will furnish Silicon with such
supplemental information as may be necessary in order to cause the Proxy
Statement, insofar as it relates to IGT and its subsidiaries, to comply with
applicable law after the mailing thereof to the stockholders of Silicon.

     (d) Notwithstanding anything to the contrary contained in Section 5.2(b),
at any time prior to the adoption of this Agreement by the Silicon stockholders,
the Board Recommendation may be withdrawn or modified in a manner adverse to IGT
if: (i) a proposal for any merger, reorganization, consolidation, share
exchange, recapitalization, business combination, or other similar transaction
involving, or, any sale, transfer or other disposition of, all or any
significant portion of the assets or 50% or more of the equity securities of,
Silicon, is made to Silicon and is not withdrawn; (ii) Silicon's Board of
Directors determines in its good faith judgment that such offer constitutes a
Superior Proposal (as defined in Section 5.3(c)); and (iii) Silicon's Board of
Directors determines in its good faith judgment, that, in light of such Superior
Proposal, the withdrawal or modification of the Board Recommendation is required
in order for Silicon's Board of Directors to comply with its fiduciary
obligations to Silicon's stockholders under applicable law; and (iv) neither
Silicon nor any Silicon Representative shall have violated any of the
restrictions set forth in Section 5.3.

     (e) Silicon shall comply with all provisions of the Exchange Act and the
Law in the solicitation of proxies from its stockholders to vote upon the
proposal to adopt this Agreement and will comply with the Exchange Act and the
CGCL in the preparation, filing and distribution of the Proxy Statement.

     5.3 No Solicitation.

     (a) In light of the consideration given by the Board of Directors of
Silicon prior to the execution of this Agreement to, among other things, the
transactions contemplated hereby, and in light of Silicon's representations
contained in Section 3.22, Silicon agrees that it will not, nor shall it permit
any of its Subsidiaries to, directly or indirectly, through any officer,
director, representative, agent or affiliate (a "Silicon Representative"), (i)
initiate, solicit, encourage, induce or otherwise facilitate the initiation or
submission of any inquiries, proposals or offers that constitute or may
reasonably be expected to lead to an Acquisition Proposal (as defined below),
(ii) furnish any information regarding Silicon to any Person in connection with
or in response to an Acquisition Proposal or an inquiry or indication of
interest that could reasonably be expected to lead to an Acquisition Proposal,
unless required by Applicable Law, (iii) enter into or maintain or continue
discussions or negotiate with any Person in furtherance of such inquiries or to
obtain an Acquisition Proposal, (iv) agree to, approve, recommend or endorse any
Acquisition Proposal, or (v) enter into any letter of intent, contract or
similar agreement contemplating or otherwise relating to any Acquisition
Proposal; provided, however, that prior to the adoption of this Agreement by the
Silicon stockholders, this Section 5.3(a) shall not prohibit Silicon from
furnishing nonpublic information regarding Silicon to, or entering into
discussions with, any Person in response to an Acquisition Proposal that is
submitted to Silicon by such Person (and not withdrawn) if (w) neither Silicon
nor any Silicon Representative shall have violated any of the restrictions set
forth in this Section 5.3, (x) the Board of Directors of Silicon concludes in
its good faith judgment, that such action is required in order for the Board of
Directors of Silicon to comply with its fiduciary obligations to Silicon's
stockholders under applicable law, (y) at or prior to furnishing any such
nonpublic information to, or entering into discussions with, such Person,
Silicon gives IGT written notice of Silicon's intention to furnish nonpublic
information to, or enter into discussions with, such Person, and Silicon
receives from such Person an executed confidentiality agreement, and (z) at or
prior to furnishing any such nonpublic information to such Person, Silicon
furnishes such nonpublic information to IGT (to the extent such nonpublic
information has not been previously furnished by Silicon to IGT).

                                       21
   72

     (b) For purposes of this Agreement, "Acquisition Proposal" means a proposal
for any of the following (other than the transactions contemplated by this
Agreement, including the WagerWorks Disposition) that involves: (A) any merger,
reorganization, consolidation, share exchange, recapitalization, business
combination, liquidation, dissolution, or other similar transaction involving,
or, any sale, lease, exchange, mortgage, pledge, transfer or other disposition
of, all or any significant portion of the assets or 25% or more of the equity
securities of, Silicon; (B) any tender offer or exchange offer for 50% or more
of the outstanding shares of capital stock of Silicon or the filing of a
registration statement under the Securities Act in connection therewith; or (C)
any public announcement of a proposal, plan or intention to do any of the
foregoing or any agreement to engage in any of the foregoing.

     (c) For purposes of this Agreement, "Superior Proposal" means a bona fide
proposal made by a third party to acquire Silicon pursuant to an Acquisition
Proposal that the Board of Directors of Silicon determines in its good faith
judgment to merit the withdrawal of the Board Recommendation because such third
party proposal has more favorable terms than the transactions contemplated by
this Agreement, such proposal would provide greater value from a financial point
of view to the holders of the capital stock of Silicon, and the party making the
proposal has demonstrated that the funds required for the consummation of its
proposal are available.

     (d) Silicon will immediately notify IGT after receipt of any Acquisition
Proposal or any request for nonpublic information relating to Silicon in
connection with an Acquisition Proposal or for access to any of the premises,
books or records of Silicon by any person or entity that informs Silicon or its
Board of Directors, formally or informally, that it is considering making, or
has made, an Acquisition Proposal. Such notice to IGT will be made orally and in
writing and will indicate in reasonable detail the identity of the offering
party and the terms and conditions of such proposal, inquiry or contact; except
such disclosure will be made to IGT only to the extent such disclosure does not
violate the fiduciary responsibilities of the Board of Directors of Silicon,
after being advised by its legal counsel, in which case Silicon will provide IGT
with a summary of the terms and conditions of such proposal, inquiry or contact.

     (e) Nothing contained in this Section 5.3 will prevent Silicon from
complying with Rule 14e-2(a) or Rule 14d-9 promulgated under the Exchange Act,
if applicable, with regard to an Acquisition Proposal made in the form of a
tender offer by a third party.

     (f) Silicon shall immediately cease and cause to be terminated any
pre-existing discussions with any Person that relates to any Acquisition
Proposal; provided, however, that any such discussions may be recommenced so
long as Silicon complies with all of the provisions of this Section 5.3 before
doing so.

     5.4 Press Releases.  Silicon and IGT will consult with each other before
issuing, and provide each other the opportunity to review and comment upon, any
press releases or other public statements with respect to any transactions
described in this Agreement, including the Merger, and will not issue any such
press releases or make any such public statement prior to such consultation,
except as may be required by Applicable Law, court process or by obligations
pursuant to a listing agreement with Nasdaq.

     5.5 Access to Information and Confidentiality.

     (a) Prior to the Closing Date, Silicon will, and will cause its
Subsidiaries to, afford to IGT and its officers, employees, accountants,
counsel, financial advisors and other representatives, reasonable access during
normal business hours to its properties, premises, books, records, contracts,
commitments, and personnel and will furnish to IGT (i) a copy of each report,
schedule, registration statement and other documents filed by it during such
period pursuant to the requirements of federal or state securities laws, and
(ii) such other information with respect to its business, properties and
personnel as IGT reasonably requests.

     (b) The confidentiality obligations of Silicon and IGT will continue to be
governed by the Confidentiality Agreement.

     5.6 Consultation and Reporting.  During the period from the date of this
Agreement to the Closing Date, Silicon will confer with IGT on a regular and
frequent basis to report material operational matters with respect to its
business and to report on the general status of its ongoing operations. Silicon
will notify IGT of

                                       22
   73

any unexpected emergency or other change in the normal course of its business or
in the operation of its properties and of any governmental complaints,
investigations, adjudicator proceedings, or hearings (or communications
indicating that the same may be contemplated) and will keep IGT fully informed
of such events and permit IGT's representatives prompt access to all materials
prepared by Silicon or on its behalf or served on Silicon in connection
therewith.

     5.7 Notification of Changes.

     (a) Silicon, on the one hand, and IGT and NewCo, on the other hand, will
promptly notify the other parties of any event that causes any representation or
warranty given by the other parties, respectively, in Article 3 and Article 4 to
become untrue.

     (b) Silicon, on the one hand, and IGT and NewCo, on the other hand, will
each have the right until the Closing to supplement or amend any of the
Schedules described in Article 3 or Article 4 with respect to any matter arising
or discovered after the date of this Agreement which, if existing or known on
the date of this Agreement, would have been required to be set forth or
described in such Schedules. For all purposes of this Agreement, including for
purposes of determining whether the conditions set forth in Article 6 have been
fulfilled, the Schedules will be deemed to include only that information
contained therein on the date of this Agreement and will be deemed to exclude
all information contained in any supplement or amendment thereto, except to the
extent that they reflect an event or condition that would not have a Material
Adverse Effect on the party making the representation and warranty; provided,
however, that if the Closing will occur, then all matters disclosed pursuant to
any such supplement or amendment will be deemed included in the Schedules at
Closing (without necessity of a written waiver or other action on the part of
any party) and to modify the applicable representations and warranties for all
purposes.

     5.8 Fees and Expenses.  IGT and Silicon Gaming will each pay the costs and
expenses incurred by it in pursuit of the consummation of the Merger and the
other transactions contemplated by this Agreement, including financial advisory
fees, fairness opinion fees, legal fees and accounting fees (the "Closing
Costs"). Notwithstanding the foregoing sentence, IGT will pay any HSR Report
filing fees incurred as a result of the Merger.

     5.9 Conduct of Business.  Except as set forth on Schedule 5.9 hereto,
Silicon shall, and shall cause its Subsidiaries to, carry on their respective
businesses in the usual, regular and ordinary course in substantially the same
manner as heretofore conducted and in compliance in all material respects with
all applicable laws and regulations and, to the extent consistent therewith, use
all commercially reasonable efforts to preserve intact their current business
organizations, keep available the services of their current officers and key
employees and preserve their relationships with customers, suppliers and others
having business dealings with them (it being understood that Silicon may from
time to time lose customers in the ordinary course of business and that due to
Silicon's existing financial condition, Silicon may consider taking actions that
are inconsistent with the foregoing undertaking; in such case IGT agrees that it
shall not unreasonably withhold its consent to such actions).

     Except as expressly set forth in this Agreement or as consented to in
writing by IGT during the period from the date of this Agreement to the
Effective Time, Silicon shall not, and shall not permit any of its Subsidiaries
to:

          (a) other than the disposition of WagerWorks as contemplated by
     Section 5.10, the disposition of the Exchange Warrants as contemplated by
     Section 5.10 and the disposition of the Stock Options as contemplated by
     Section 5.11, (i) declare, set aside or pay (whether in cash, stock,
     property or otherwise) any dividends on, or make any other distributions in
     respect of, any of its capital stock, other than dividends and
     distributions by any direct or indirect wholly owned subsidiary of Silicon
     to IGT, (ii) split, combine or reclassify any of its capital stock or issue
     or authorize the issuance of any other securities in respect of, in lieu of
     or in substitution for shares of its capital stock or (iii) purchase,
     redeem or otherwise acquire any shares of capital stock of Silicon or any
     of its subsidiaries or any other securities thereof or any rights, warrants
     or options to acquire any such shares or other securities (except for the
     expiration of options in accordance with their terms);

                                       23
   74

          (b) other than the issuance of Silicon Common Stock upon the exercise
     of Stock Options outstanding on the date of this Agreement in accordance
     with their present terms or in accordance with the present terms of any
     employment agreements existing on the date of this Agreement, and the
     issuance of shares of Series E Preferred Stock upon the exercise of the
     Series E Warrant in accordance with its terms, (i) issue, deliver, sell,
     award, pledge, dispose of or otherwise encumber or authorize or propose the
     issuance, delivery, grant, sale, award, pledge or other encumbrance
     (including limitations in voting rights) or authorization of, any shares of
     its capital stock, any other voting securities or any securities
     convertible into, or any rights, warrants or options to acquire, any such
     shares, voting securities or convertible securities, (ii) amend, waive or
     otherwise modify the terms of any such rights, warrants or options except
     as contemplated by this Agreement, or (iii) accelerate the vesting of any
     of the Stock Options, except as contemplated under the terms of the Stock
     Options or the stock option plans under which any Stock Options were
     granted (provided, however, that the foregoing restrictions shall not be
     applicable to any financing transaction undertaken by Silicon in accordance
     with Section 5.12);

          (c) amend its articles of incorporation, by-laws or other comparable
     charter or organizational documents, or alter through merger, liquidation,
     reorganization, restructuring or in any other fashion the corporate
     structure or ownership of any material subsidiary of Silicon;

          (d) acquire or agree to acquire (for cash or shares of stock or
     otherwise) (i) by merging or consolidating with, or by purchasing a
     substantial portion of the assets of, or by any other manner, any business
     or any corporation, partnership, limited liability company, joint venture,
     association or other business organization or division thereof or (ii) any
     assets with a purchase price in excess of $250,000 except purchases of
     inventory, fixtures, furniture, supplies, vehicles and equipment in the
     ordinary course of business consistent with past practice;

          (e) commence or undertake or agree to commence the operation or
     development of a casino or other gaming operations of any nature (excluding
     the existing gaming operations of Silicon), other than in the ordinary
     course of business consistent with past practice;

          (f) mortgage or otherwise encumber or subject to any Lien (other than
     purchase money security interests or liens granted in connection with
     leases permitted by this Agreement), or sell, lease, exchange or otherwise
     dispose of any of, its properties or assets, except for sales of its
     properties or assets in the ordinary course of business consistent with
     past practice;

          (g) (i) except in the ordinary course of business consistent with past
     practices or pursuant to existing credit facilities, lines of credit or
     similar agreements in aggregate amounts not to exceed $4.0 million, incur
     (which shall not be deemed to include credit facilities, lines of credit or
     similar arrangements until borrowings are made under such agreements) any
     indebtedness for borrowed money or guarantee any such indebtedness of
     another person, issue or sell any debt securities or warrants or other
     rights to acquire any debt securities of Silicon or any of its
     subsidiaries, guarantee any debt securities of another person, enter into
     any "keep well" or other agreement to maintain any financial statement
     condition of another person or enter into any arrangement having the
     economic effect of any of the foregoing (provided, however, that the
     foregoing restrictions shall not be applicable to any financing transaction
     undertaken by Silicon in accordance with Section 5.12), or (ii) make any
     loans, advances or capital contributions to, or investments in, any other
     person, other than (A) to Silicon or any direct or indirect wholly owned
     subsidiary of Silicon or (B) loans or advances to employees of Silicon or
     any of its subsidiaries for travel or business expenses in the ordinary
     course of business;

          (h) make or agree to make any new capital expenditures which
     individually exceed $250,000 per fiscal quarter;

          (i) make or rescind any express or deemed election relating to
     material taxes, settle or compromise any claim, action, suit, litigation,
     proceeding, arbitration, investigation, audit or controversy relating to
     material taxes, or change any of its methods of reporting income or
     deductions for federal income tax purposes from those employed in the
     preparation of its federal income tax return for the taxable year ending
     December 31, 1999, except as may be required by applicable law;

                                       24
   75

          (j) pay, discharge or satisfy any claims, liabilities or obligations
     (absolute, accrued, asserted or unasserted, contingent or otherwise), other
     than the payment, discharge, settlement or satisfaction, in the ordinary
     course of business consistent with past practice or in accordance with
     their terms, of claims subject to insurance or liabilities reflected or
     reserved against in, or contemplated by, the most recent consolidated
     financial statements (or the notes thereto) of Silicon included in Silicon
     SEC Documents or incurred in the ordinary course of business consistent
     with past practice; provided that Silicon will not settle or dismiss
     without the prior written consent of IGT the Drews Distributing litigation
     identified on Schedule 3.10 hereto;

          (k) except as set forth on Schedule 5.9, (i) increase the rate of
     compensation payable or to become payable generally to any of Silicon's or
     any of its Subsidiaries' directors, officers or employees other than usual
     and customary increases to employees who are not officers, (ii) pay or
     agree to pay any pension, retirement allowance, severance, continuation or
     termination benefit or other material employee benefit not provided for by
     any existing Pension Plan, Benefit Plan or employment agreement described
     in the Silicon SEC Documents filed prior to the date of this Agreement and
     publicly available or disclosed on Schedule 5.9, (iii) establish, adopt or
     commit itself to any additional pension, profit sharing, bonus, incentive,
     deferred compensation, stock purchase, stock option, stock appreciation
     right, group insurance, severance pay, continuation pay, termination pay,
     retirement or other material employee benefit plan, agreement or
     arrangement, or amend or modify or increase the benefits under or take any
     action to accelerate the rights or benefits under any collective bargaining
     agreement or any employee benefit plan, agreement or arrangement, including
     the Stock Option plans or other Benefit Plan, (iv) enter into any
     severance, retention or employment agreement with or for the benefit of any
     person (such agreements or undertakings are referred to herein as
     "Retention Agreements"), or (v) increase the rate of compensation under or
     otherwise change the terms of any existing employment agreement;

          (l) with respect to any agreement related to the Media Products and
     the Cross License, modify, amend, assign, terminate, grant any waiver or
     release or change in any way any of such agreements and, with respect to
     any other material contract or agreement, except in the ordinary course of
     business consistent with past practice, modify, or amend in any material
     respect, or renew, fail to renew or terminate, any such material contract
     or agreement to which Silicon or any subsidiary is a party or waive,
     release or assign any material rights or claims pertaining thereto;

          (m) change fiscal years;

          (n) authorize, recommend, propose or announce an intention to adopt a
     plan of complete or partial liquidation or dissolution of Silicon;

          (o) enter into any collective bargaining agreement;

          (p) engage in any transaction with, or enter into any agreement,
     arrangement or understanding with, directly or indirectly, any of Silicon's
     officers or directors other than pursuant to such agreements (x) existing
     on the date hereof and disclosed on Schedule 5.9, (y) entered into in the
     ordinary course of business consistent with past practice or (z)
     contemplated by this Agreement;

          (q) engage in any transaction or enter into any agreement which would
     sell any inventory or asset of Silicon or its Subsidiaries at a price below
     that which would be negotiated if this Agreement and the related merger
     were not contemplated;

          (r) enter into any agreement of any nature with WagerWorks and any
     entity controlled by or under common control with WagerWorks or modify,
     amend, assign, terminate, grant any waiver or release or change in any way
     any existing agreement with WagerWorks except for the Cross License as
     required by Section 6.2(n) hereof; or

          (s) authorize any of, or commit or agree to take any of, the foregoing
     actions.

     5.10 Completion of Disposition of WagerWorks.  Promptly following the
execution of this Agreement, Silicon shall use its commercially reasonable
efforts to dispose of all of the outstanding capital stock of WagerWorks (except
the Wager Works Shares) held by Silicon in a manner satisfactory to IGT, Silicon
and
                                       25
   76

the holders of a majority of the outstanding shares of Series D Preferred Stock,
such disposition to be effected on an "as-is" basis (except that Silicon may
represent that upon the disposition of the shares the purchaser will acquire
title to the shares free and clear of any encumbrances) and providing that upon
the consummation of such disposition, neither Silicon nor any of its
Subsidiaries shall have any further liabilities or obligations to any third
party of any nature whatsoever relating to or arising from the disposition of
all outstanding capital stock of WagerWorks; provided that no consent from IGT
shall be required pursuant to this Section 5.10 if (i) such disposition is a
sale to one or more existing stockholders or lenders of Silicon, (ii) Silicon
has first obtained an opinion of its financial advisor that the terms of such
disposition are fair from a financial point of view to the stockholders of
Silicon and (iii) such sale is to be effected on an "as is" basis (except that
Silicon may represent that upon the disposition of the shares the purchaser will
acquire title to the shares free and clear of any encumbrances).

     5.11 Stock Options.

     (a) IGT and Silicon shall, effective as of the Effective Time, (i) cause
each Stock Option that is outstanding to be canceled, and (ii) in consideration
of such cancellation and, except to the extent IGT or NewCo and the holder of
any such Stock Option otherwise agree, cause Silicon to pay such holders of
Stock Options which are outstanding and have vested in accordance with its terms
an amount in respect thereof equal to the product of (x) the excess, if any, of
the Conversion Cash over the exercise price of each such Stock Option, and (y)
the number of vested shares of Silicon Common Stock subject to the Stock Option
immediately prior to its cancellation (such payment to be net of applicable
withholding taxes).

     (b) Upon payment of all amounts required to be paid pursuant to paragraph
(a) of this Section 5.11, all plans pursuant to which Stock Options are issued
shall terminate as of the Effective Time, and no holder of Stock Options or
participant in any such plan shall have any rights thereunder to acquire any
equity securities of Silicon, the Surviving Corporation or any subsidiary or
affiliate thereof.

     (c) All other plans, programs or arrangements providing for the issuance or
grant of any other interest in respect of the capital stock of Silicon or any of
its Subsidiaries shall terminate as of the Effective Time, and no participant in
any such plans, programs or arrangements shall have any rights thereunder to
acquire any equity securities of Silicon, the Surviving Corporation or any
subsidiary or affiliate thereof.

     (d) IGT and Newco agree that Silicon may, with the approval of its Board of
Directors and B III, modify the terms (but not the number of shares purchasable
upon the exercise of the Stock Options) of outstanding Stock Options (excluding
the Original Stock Options) prior to the Closing, including without limitation,
the exercise price thereof.

     5.12 Interim Financing.  Each time Silicon proposes to incur any
indebtedness for borrowed money, other than under existing credit lines, in an
amount exceeding $500,000, Silicon shall first (i) provide IGT written notice of
its intention to incur such indebtedness and include all material terms of such
borrowing proposal and (ii) allow IGT to elect, in its sole discretion, to lend
to Silicon the amounts specified in Silicon's written notice at a price and on
the terms at least as favorable to Silicon as those specified in such notice
provided that such loans shall not, if made by IGT, be senior to the
indebtedness outstanding to B III unless B III consents thereto. If the Merger
is consummated, any amounts loaned to Silicon under this provision that remain
outstanding at the time of the Closing will be deducted from the Merger
Consideration in accordance with the provisions of Section 2.1(b). In the event
that IGT exercises its rights and chooses to make interim loans to Silicon, such
loans shall only be made after IGT has provided notice to any and all gaming
authorities requiring such notice and has received all necessary gaming
authority approvals required to make such loans.

     5.13 Indemnification and Insurance.

     (a) IGT and NewCo agree that all rights to indemnification for acts or
omissions occurring prior to the Effective Time now existing in favor of the
current or former directors or officers (the "Indemnified Parties") of Silicon
and its Subsidiaries as provided in their respective articles or certificates of
incorporation or bylaws (or similar organizational documents) or existing
indemnification agreements shall survive the Merger and shall continue in full
force and effect in accordance with their terms.

                                       26
   77

     (b) In addition, IGT will provide (or cause the Surviving Corporation to
provide), for a period of not less than six (6) years after the Effective Time,
Silicon's current directors and officers an insurance and indemnification policy
that provides coverage for events occurring at or prior to the Effective Time
that is no less favorable than Silicon's existing directors and officers
insurance policy or, if substantially equivalent insurance coverage is
unavailable, the best available coverage; provided, however, that IGT and the
Surviving Corporation shall not be required to pay an annual premium for such
insurance coverage in excess of 150% of the annual premium currently paid by
Silicon for such insurance, but in any case shall purchase as much such coverage
as possible for such amount. Silicon hereby represents that the annual premium
for such policy for the year ended July 30, 2001 was $267,108.08.

     (c) This Section 5.13 shall survive the consummation of the Merger at the
Effective Time, is intended to benefit Silicon, IGT, the Surviving Corporation
and the Indemnified Parties and their respective heirs, representatives,
successors and assigns, and shall be binding on all successors and assigns of
IGT and the Surviving Corporation.

     5.14 Certain WagerWorks Transactions.  Except as expressly set forth on
Schedule 3.24, during the period from the date of this Agreement to the
Effective Time, Silicon shall not, and shall not permit any of its Subsidiaries
to (a) amend any of the agreements set forth on Schedule 3.24 or 3.25, (b)
transfer or otherwise convey in any manner any property or assets to WagerWorks
or (c) grant any license or right to WagerWorks to use any patents, trademarks,
service marks, trade names, copyrights, technology, know how or processes owned
or licensed by Silicon or any of its Subsidiaries.

                                   ARTICLE 6

                               CLOSING CONDITIONS

     6.1 Conditions Applicable to all Parties.  The respective obligations of
each party to consummate the transactions contemplated by this Agreement are
subject to the satisfaction or, where permissible, waiver by such party of the
following conditions at or prior to the Closing Date:

          (a) Silicon Stockholder Approval.  The Merger will have been duly
     approved by holders of the outstanding shares of Silicon Common Stock and
     Silicon Preferred Stock in accordance with the CGCL and the Articles of
     Incorporation of Silicon.

          (b) HSR Act.  The waiting periods (and any extensions thereof)
     applicable to the Merger under the HSR Act, if applicable, shall have been
     terminated or shall have expired and no condition will have been imposed on
     Silicon or IGT to obtain such termination that would require the
     divestiture of any Silicon or IGT assets or otherwise have a Material
     Adverse Effect on either party.

          (c) No Injunctions or Restraints.  No temporary restraining order,
     preliminary or permanent injunction or other order, judgment or decree to
     restrain or prohibit the consummation of the Merger or any of the other
     transactions described in this Agreement shall have been issued and remain
     in effect.

          (d) Litigation.  There shall not have been instituted or pending, or
     threatened, any Proceeding by any Governmental Entity as a result of this
     Agreement or any of the transactions contemplated hereby which, if such
     Governmental Entity were to prevail, would reasonably be expected to have a
     Material Adverse Effect on IGT or the Surviving Corporation.

          (e) Gaming Approvals.  All necessary or required gaming approvals from
     any Gaming Authorities shall have been received or obtained.

          (f) WagerWorks Disposition.  Silicon will have completed the
     WagerWorks Disposition in accordance with Section 5.10 hereof.

                                       27
   78

     6.2 Conditions to IGT's and NewCo's Obligations.  The obligations of IGT
and NewCo to consummate the transactions contemplated by this Agreement are
subject to the satisfaction of the following conditions, unless waived in
writing by IGT:

          (a) Representations and Warranties.  The representations and
     warranties of Silicon set forth in this Agreement that are qualified by
     materiality, will be true and correct in all respects as of the date of
     this Agreement and as of the Closing Date as though made on and as of the
     Closing Date, and the representations and warranties of Silicon not so
     qualified shall be true and correct in all material respects as of the date
     of this Agreement and as of the Closing Date, provided that those
     representations and warranties which address matters only as of a
     particular date shall remain true and correct as of such date.

          (b) Covenants.  Silicon will have performed or complied in all
     material respects with the obligations and covenants required to be
     complied with or performed by it under this Agreement at or prior to the
     Closing Date.

          (c) Consents and Approvals.  All consents and approvals of third
     parties necessary for the consummation of the transactions contemplated by
     this Agreement shall have been obtained.

          (d) Closing Certificate.  IGT will have received a certificate
     executed by the Chief Executive Officer and Chief Financial Officer of
     Silicon dated the Closing Date, certifying that the conditions specified in
     Section 6.2(a) through (c) have been fulfilled. Silicon shall also have
     delivered to IGT (i) a certificate of good standing from the Secretary of
     State of the State of California and of comparable authority in other
     jurisdictions in which Silicon and its Subsidiaries are incorporated or
     qualified to do business stating that each is a validly existing
     corporation in good standing; (ii) duly adopted resolutions of the Board of
     Directors and stockholders of Silicon approving the execution, delivery and
     performance of this Agreement and the instruments contemplated hereby,
     certified by the Secretary of Silicon; and (iii) a true and complete copy
     of the articles of incorporation or comparable governing instruments, as
     amended, of Silicon and its Subsidiaries certified by the Secretary of
     State of the state of incorporation or comparable authority in other
     jurisdictions, and a true and complete copy of the by-laws or comparable
     governing instruments, as amended, of Silicon and its Subsidiaries
     certified by the Secretary of Silicon and its Subsidiaries, as applicable.

          (e) Director and Officer Resignations.  IGT shall have received
     resignations from all of the directors and officers of Silicon, such
     resignations to be effective as of the Effective Time.

          (f) Voting Agreements.  The parties to the Voting Agreements shall
     have voted their shares of Silicon Common Stock in accordance therewith.

          (g) Stockholders Agreement.  The parties to that certain Stockholders
     Agreement dated November 24, 1999 (the "Stockholders Agreement") shall have
     terminated such Stockholders Agreement subject to effectiveness of the
     Merger and, upon such effectiveness, the Stockholders Agreement shall no
     longer be of any legal force or effect.

          (h) Consents and Approvals.  IGT shall have received evidence, in form
     and substance reasonably satisfactory to it, that such licenses, permits,
     consents, approvals, waivers, findings of suitability, authorizations,
     qualifications and orders of, and declarations, registrations and filings
     (including, without limitation, all Gaming Approvals) (collectively,
     "Consents and Filings") required to be made or obtained by Silicon or IGT
     from all Governmental Entities and parties to loan or credit agreements,
     notes, mortgages, indentures, leases or other contracts, agreements or
     instruments to which Silicon, IGT or any of their respective subsidiaries
     is a party or by which Silicon, IGT or any of their respective Subsidiaries
     or their respective assets are bound or affected, as are required in
     connection with the Merger and the consummation of the transactions
     contemplated hereby, have been obtained or made, as applicable, by Silicon
     or IGT, as the case may be, without the imposition of any material
     limitations, prohibitions or requirements of a type that are not acceptable
     to IGT in its sole discretion, and are in full force and effect, other than
     those Consents and Filings (including Gaming Approvals) which, if not
     obtained or made, would not, either have (i) a Material Adverse Effect on
     the transactions contemplated hereby, (ii) a Material Adverse Effect on the
     Surviving Corporation or IGT after the Effective Time, or (iii) a Material
                                       28
   79

     Adverse Effect on the continuation of the operations and business of IGT
     and its subsidiaries by the Surviving Corporation after the consummation of
     the transactions contemplated hereby.

          (i) The Consulting Agreements entered into with Andrew Pascal, Paul
     Mathews and Tom Carlson shall each be in force and effect.

          (j) The agreements specified on Schedule 6.2(k) hereto shall have been
     modified as set forth on Schedule 6.2(k) hereto.

          (k) There shall be no restriction (other than that imposed by
     applicable securities laws) on the right of IGT or the Company to dispose
     of the shares of WagerWorks retained by the Company.

          (l) All outstanding warrants, options, or rights to acquire equity
     securities of Silicon shall have been exercised or have been terminated as
     of the Closing or be exercisable solely for the amount of Conversion Cash
     per share that would have been received had the warrant been exercised
     prior to the Closing.

          (m) The Cross License Agreement shall have been modified as set forth
     on Schedule 6.2(n) hereto.

     6.3 Conditions to Obligations of Silicon.  The obligations of Silicon to
consummate the transactions contemplated by this Agreement are subject to the
satisfaction of the following conditions, unless waived in writing by Silicon:

          (a) Representations and Warranties.  The representations and
     warranties of IGT and NewCo set forth in this Agreement, will be true and
     correct in all respects as of the date of this Agreement and as of the
     Closing Date as though made on and as of the Closing Date, except as
     otherwise contemplated by this Agreement, and except where the failure of
     any representations and warranties, individually or in the aggregate, would
     not have Material Adverse Effect.

          (b) Covenants.  Each of IGT and NewCo will have performed or complied
     in all material respects with all obligations and covenants required to be
     complied with or performed by it under this Agreement at or prior to the
     Closing Date.

          (c) Closing Certificate.  The receipt by Silicon of a certificate
     executed by the Chief Executive Officer or President and Chief Financial
     Officer of IGT dated the Closing Date, certifying that the conditions
     specified in Section 6.3(a) through (c) have been fulfilled.

          (d) Consents and Approvals.  Silicon shall have received evidence, in
     form and substance reasonably satisfactory to it, that all Gaming Approvals
     required to be made or obtained by Silicon or IGT from all Governmental
     Entities as are required in connection with the Merger and the consummation
     of the transactions contemplated hereby, have been obtained or made, as
     applicable, by Silicon or IGT, as the case may be, without the imposition
     of any material limitations, prohibitions or requirements of a type that
     are not acceptable to Silicon in its sole discretion, and are in full force
     and effect, other than those Gaming Approvals which, if not obtained or
     made, would not, either have (i) a Material Adverse Effect on the
     transactions contemplated hereby, (ii) a Material Adverse Effect on the
     stockholders of Silicon after the Effective Time.

                                   ARTICLE 7

                           TERMINATION AND AMENDMENT

     7.1 Termination.  This Agreement may be terminated and the Merger
contemplated by this Agreement abandoned at any time before the Effective Time,
whether before or after approval by the Silicon stockholders as follows:

          (a) Mutual Consent.  By the mutual consent of the Boards of Directors
     of Silicon and IGT.

          (b) Material Breach.  By the Board of Directors of either Silicon or
     IGT if there has been a material breach by the other of any representation
     or warranty contained in this Agreement or of any

                                       29
   80

     covenant contained in this Agreement, which in either case cannot be, or
     has not been, cured within 10 days after written notice of such breach is
     given to the party committing such breach; provided that the right to
     effect such cure will not extend beyond the date set forth in Section
     7.1(c) below and the party seeking to terminate may not then be in material
     breach of any representation, warranty or covenant contained in this
     Agreement.

          (c) Abandonment.  By the Board of Directors of either Silicon or IGT
     if the Merger has not occurred by May 30, 2001, unless the failure to
     consummate the Merger is attributable to a failure on the part of the party
     seeking to terminate this Agreement to perform any material obligation
     required under the terms and provisions of this Agreement to be performed
     by it.

          (d) Government Action.  By the Board of Directors of either Silicon or
     IGT if any Governmental Entity shall have issued a final, non-appealable
     order, decree or ruling or taken any other action permanently enjoining,
     restraining or otherwise prohibiting the Merger.

          (e) Failure to Obtain Required Vote of Silicon Stockholders.  By
     either Silicon or IGT if the Silicon Special Meeting (including any
     adjournments and postponements thereof) shall have been held and completed
     and this Agreement shall not have been adopted by the required affirmative
     vote of the Silicon stockholders at such meeting; provided, however, that a
     party shall not be permitted to terminate this Agreement pursuant to this
     Section 7.1(e) if the failure to obtain such stockholder approval is
     attributable to a failure on the part of such party to perform any material
     obligation required under the terms and provisions of this Agreement to be
     performed by it at or prior to the Effective Time.

          (f) Board Recommendation.  By IGT, if the Board of Directors of
     Silicon (i) withdraws or modifies adversely its recommendation of the
     Merger following the receipt by Silicon of an Acquisition Proposal, (ii)
     recommends an Acquisition Proposal to Silicon stockholders or (iii) fails
     to call or hold the Silicon stockholders' meeting by reason of the receipt
     by Silicon of an Acquisition Proposal or for any other reason.

          (g) Failure of Certain Specified Matters.

             (i) by IGT if

                (A) any representation made by Silicon in this Agreement is
           materially untrue as of the time such representation is made;
           provided, that such misrepresentation or misrepresentations are, with
           respect to Silicon, reasonably likely to cause or result in an
           adverse affect of an amount greater than $1,000,000; or

                (B) at Closing, the total aggregate liabilities reflected on the
           Agreed Upon Balance Sheet exceed $45,000,000; or

                (C) at Closing, Silicon does not own the patents or patent
           applications listed on Appendix A hereto, or Silicon has licensed any
           of such patents or patent applications to a third party other than
           IGT or WagerWorks (but, if to WagerWorks, only to the extent that
           such licenses have been represented as exclusive to Internet
           applications); or

                (D) Silicon fails to make commercially reasonable efforts to
           provide IGT with the information or other assistance reasonably
           necessary to consummate the transactions contemplated by this
           Agreement; or

                (E) Silicon fails to take all reasonable actions within its
           control necessary to permit the closing of the Transaction, including
           if Silicon terminates this Agreement as a result of receipt of an
           Acquisition Proposal as described in Section 5.4 or withdraws its
           recommendation of the Merger;

                (F) On or before May 30, 2001, Silicon has not completed the
           WagerWorks Disposition and all other conditions to Closing identified
           in Article 6 hereof have been satisfied provided that such failure
           did not occur as a result of IGT's refusal to consent to a sale of
           WagerWorks being made on the basis specified in Section 5.10 hereof,
           including a sale to one or more existing
                                       30
   81

           stockholders or lenders of Silicon except that in the event the
           disposition is to one or more existing stockholders or lenders of
           Silicon then Silicon shall first obtain an opinion of its financial
           advisor that the terms of such disposition are fair from a financial
           point of view to the stockholders of Silicon.

             (ii) and by Silicon in the event that a Governmental Entity with
        responsibility for antitrust matters requests additional information
        and, within 30 days thereafter IGT has not responded to such request or
        advised Silicon in writing that it is undertaking to respond to such
        request provided that, with respect to Silicon's right to terminate,
        Silicon is not then in material breach of any representation, warranty
        or covenant contained in this Agreement.

          (h) Superior Proposal.  By Silicon if, prior to approval of the Merger
     by its stockholders and as a result of a Superior Proposal, the Board of
     Directors of Silicon determines, in good faith, after consultation with
     legal counsel and its financial advisor, that the failure to terminate this
     Agreement and accept such Superior Proposal would be inconsistent with the
     proper exercise of its fiduciary duties; provided, however, that before
     Silicon may terminate this Agreement pursuant to this subsection 7.1(h),
     Silicon shall give notice to IGT of the proposed termination under this
     subsection this 7.1(h) and IGT, within five (5) business days of receipt of
     such notice, shall have the right, in its sole discretion, to offer to
     amend this Agreement to provide for terms substantially similar to those of
     the Superior Proposal and Silicon shall negotiate in good faith with IGT
     with respect to such proposed amendment; provided, further, that if IGT and
     Silicon are unable to reach an agreement with respect to the IGT's proposed
     amendment within ten (10) days after such good faith negotiations have
     commenced, Silicon may terminate this Agreement pursuant to this subsection
     7.1(h).

     7.2 Effect of Termination.  Upon termination of this Agreement pursuant to
this Article 7, this Agreement will be void and of no effect, other than the
obligation to repay immediately the Prepayment Amount and to pay the Termination
Fee referred to in Section 7.3, if applicable, and will result in no other
obligation of or liability to any party or their respective directors, officers,
employees, agents or stockholders, unless such termination was the result of an
intentional breach of any representation, warranty or covenant in this Agreement
in which case the party who breached the representation, warranty or covenant
will be liable to the other party for damages.

     7.3 Expenses; Termination Fees.  Except as set forth in this Section 7.3 or
Sections 5.10 and 5.14, all fees and expenses incurred in connection with this
Agreement and the transactions contemplated by this Agreement shall be paid by
the party incurring such expenses, whether or not the Merger is consummated.

          (a) If this Agreement is terminated by Silicon pursuant to Sections
     7.1(b) or 7.1(g)(ii), and Silicon is not at such time in material breach of
     any representation, warranty or covenant set forth in this Agreement, IGT
     shall be obligated to pay Silicon $2,500,000, and Silicon may retain the
     Prepayment Amount without any obligation of repayment to IGT.

          (b) If this Agreement is terminated by IGT for any of the reasons set
     forth in Sections 7.1(b), 7.1(e), 7.1(f), 7.1(h) or clause (F) of Section
     7.1(g)(i), and IGT is not at such time in material breach of any
     representation, warranty or covenant set forth in this Agreement, Silicon
     shall be obligated to pay IGT $1,000,000, excluding the Prepayment Amount,
     which Prepayment Amount shall also at the same time be returned to IGT;
     provided, however, if IGT terminates this Agreement for the reasons set
     forth in Section 7.1(b) it only be entitled to the Prepayment Amount unless
     with respect to a breach of a representation made by Silicon, such
     misrepresentation or misrepresentations are reasonably likely to cause or
     result in either (i) an adverse effect on Silicon of an amount greater than
     $1,000,000 or (ii) a Material Adverse Effect.

          (c) If this Agreement is terminated by both Silicon and IGT pursuant
     to Section 7.1(a), by either Silicon or IGT pursuant to Section 7.1(c) or
     7.1(d), or by IGT pursuant to clauses (A) through (E) of Section 7.1(g)(i),
     and the terminating party is not at such time in material breach of any
     representation, warranty or covenant set forth in this Agreement, then
     Silicon shall repay the Prepayment Amount to IGT and no further payments
     shall be made by either party to the other.

                                       31
   82

          (d) If IGT is obligated to pay the Termination Fee to Silicon, then
     Silicon shall, as an inducement to cause IGT to enter into this Agreement
     and for no additional consideration, issue to IGT a fully paid up
     nonexclusive perpetual worldwide license to Patent Number 6,104,815
     ("Method and Apparatus for Providing Authenticated, Secure On-Line
     Communication Between Remote Locations") for use in IGT's traditional
     casino gaming applications, and IGT shall issue to Silicon, as an
     inducement to cause Silicon to enter into this Agreement and for no
     additional consideration, a fully paid up nonexclusive perpetual worldwide
     license to Patent Number 5,265,874 for use in Silicon's operations. In such
     circumstances, the parties hereto agree to negotiate in good faith to
     promptly enter into and execute an agreement implementing this undertaking.

                                   ARTICLE 8

                                 DEFINED TERMS

     8.1 Definitions.  In addition to the other defined terms used in this
Agreement, the following terms when capitalized have the meanings indicated.

     "Acquisition Proposal" has the meaning ascribed to it in Section 5.5(b).

     "Adverse Claim" has the meaning ascribed to it in Section 8.102(a) of the
Uniform Commercial Code.

     "Affiliate" has the meaning ascribed to it by Rule 12b-2 promulgated under
the Exchange Act.

     "Agreed Upon Pre-Closing Balance Sheet" has the meaning ascribed to it in
Section 2.1(c).

     "Agreement" means this Agreement and Plan of Merger, including the exhibits
and schedules, as amended or otherwise modified from time to time.

     "Amended Notes" means the $7.5 million aggregate principal amount of Senior
Discount Notes not exchanged for Series D Preferred Stock of Silicon under the
Restructuring Agreement and certain terms and provisions of which were amended
pursuant to Amendment No. 2 to the Securities Purchase Agreement."

     "Amended Notes Securities Purchase Agreement" means the Original Securities
Purchase Agreement, as amended by Amendment No. 1 to the Securities Purchase
Agreement and Amendment No. 2 to the Securities Purchase Agreement.

     "Amendment No. 2 to the Securities Purchase Agreement" means that certain
Amendment No. 2 to the Securities Purchase Agreement initially entered into and
dated September 30, 1997 (the "Original Securities Purchase Agreement"), and as
amended by Amendment No. 1 to the Securities Purchase Agreement dated July 8,
1998 (the "Amendment No. 1 to the Securities Purchase Agreement"), by and
between Silicon and BIII Capital Partners, L.P.

     "Applicable Law" means any statute, law, rule or any judgment, order, writ,
injunction or decree of any Governmental Entity to which a specified Person or
its property is subject.

     "Benefit Arrangement" means any employment, severance or similar contract,
or any other contract, plan, policy or arrangement (whether or not written)
providing for compensation, bonus, profit-sharing, stock option or other stock
related rights or other forms of incentive or deferred compensation, vacation
benefits, insurance coverage (including any self-insured arrangement), health or
medical benefits, disability benefits, severance benefits and post-employment or
retirement benefits (including compensation, pension, health, medical or life
insurance benefits), other than the Employee Plans, that is maintained,
administered or contributed to by the employer and covers any employee or former
employee of any member of the Silicon Group.

     "Berg Note" means the promissory note issued by Silicon to Mr. Carl Berg,
in the principal amount of $1,000,000, dated as of July 28, 2000.

     "Business Day" means any day (other than Saturday or Sunday) on which
commercial banks in Palo Alto, California are open for business.

                                       32
   83

     "CGCL" means the California General Corporation Law, as in effect on the
Closing Date.

     "Closing" means the consummation of the Merger and the other transactions
contemplated by this Agreement.

     "Closing Date" means the date on which the Closing occurs.

     "Code" means the Internal Revenue Code of 1986, as amended.

     "Common Stock Voting Agreement" has the meaning ascribed to it in the
Recitals.

     "Confidentiality Agreement" means the Confidentiality Agreement, dated as
of                , 2000, entered into and delivered by IGT to Silicon.

     "Consents and Filings" has the meaning ascribed to it in Section 6.2(h).

     "Consulting Agreement" has the meaning ascribed to it in the Recitals.

     "Conversion Cash" has the meaning ascribed to it in Section 2.1(d).

     "Cross-License Agreement" means that certain Cross License Agreement dated
April 4, 2000 by and between Silicon and Wager Works.

     "Dissenting Shares" has the meaning ascribed to it in Section 2.6.

     "Effective Date" has the meaning ascribed to it in Section 1.2.

     "Effective Time" has the meaning ascribed to it in Section 1.2.

     "Employee Plan" means a plan or arrangement as defined in Section 3(3) of
ERISA, that (a) is subject to any provision of ERISA, (b) is maintained,
administered or contributed to by any member of the Silicon Group and (c) covers
any employee or former employee of any member of the Silicon Group.

     "ERISA" means the Employee Retirement Income Security Act of 1974, as
amended, and the rules and regulations promulgated thereunder.

     "Exchange Act" means the Securities and Exchange Act of 1934, as amended.

     "Exchange Warrants" means those certain stock purchase warrants entitling
the holders thereof to purchase an aggregate of up to 41,668,486 shares of
Silicon Common Stock, issued pursuant to that certain Warrant Agreement dated as
of June 30, 2000 by and between Silicon and the Warrant Agent named therein.

     "GAAP" means accounting principles generally accepted in the United States.

     "Gaming Approval" has the meaning ascribed to it in Section 5.1(a).

     "Gaming Authority" means, collectively, the Mississippi Gaming Commission,
the Nevada Gaming Commission, the Nevada State Gaming Control Board, the
National Indian Gaming Commission and any other tribal or Governmental Entity
that holds regulatory, licensing or permit authority over gaming activities
conducted by Silicon its Subsidiaries within its jurisdiction.

     "Gaming Laws" means, collectively, (a) the Nevada Gaming Control Act, as
codified in Chapter 463 of the Nevada Revised Statutes, as amended from time to
time, together with the regulations of the Nevada Gaming Commission promulgated
thereunder, as amended from time to time, (b) the Mississippi Gaming Control
Act, as codified in Chapter 76 of the Mississippi Code Annotated, as amended
from time to time, together with the regulations of the Mississippi Gaming
Commission promulgated thereunder, as amended from time to time, and (c) all
other laws and regulations pursuant to which any Gaming Authority possesses
regulatory, licensing or permit authority over gaming activities conducted by
Silicon or its Subsidiaries within its jurisdiction.

     "Governmental Entity" means any court or tribunal of competent jurisdiction
in any jurisdiction or any public, governmental or regulatory body, agency,
department, commission, board, bureau or other authority or

                                       33
   84

instrumentality, domestic or foreign, including, without limitation, the
National Indian Gaming Commission, or any other tribal or governmental authority
regulating any form of gaming.

     "Gross Inventory" means the total amount of inventory reflected on
Silicon's balance sheet as of the Closing Date, determined in accordance with
GAAP applied on a basis consistent with the Pre-Closing Balance Sheet.

     "IGT Audited Financial Statements" means the audited balance sheets and
related statements of income, retained earnings and cash flow, and the related
notes thereto of IGT for the years ended December 31, 1997, 1998 and 1999.

     "IGT Financial Statements" means the IGT Audited Financial Statements and
the IGT Interim Financial Statements.

     "IGT Interim Financial Statements" means the unaudited balance sheet, and
the related unaudited statements of income, retained earnings and cash flows of
IGT for the six-month period ended June 30, 2000.

     "IGT Latest Balance Sheet" means the latest balance sheet of IGT included
in the IGT Audited Financial Statements.

     "Ineligible Person" has the meaning ascribed to it in Section 5.1(d).

     "Internet Gaming" has the meaning ascribed to it in Section 3.25.

     "Knowledge" means, when given to qualify or limit a representation or
warranty otherwise made by Silicon or IGT, respectively, the actual knowledge,
after reasonable inquiry, of the officers and directors of Silicon or IGT,
respectively.

     "Leases" means any (i) ground lease or (ii) office, warehouse or facility
lease (in each of (i) and (ii), whether or not reduced to writing), to which
Silicon (or any predecessor in interest of Silicon) is subject.

     "Letter Agreement" means the letter agreement between IGT and Silicon,
dated as of October 16, 2000.

     "License Agreement" has the meaning ascribed to it in Section 3.19(f).

     "Liens" means pledges, liens, defects, leases, licenses, equities,
conditional sales contracts, charges, claims, encumbrances, security interests,
easements, restrictions, chattel mortgages, mortgages or deeds of trust, of any
kind or nature whatsoever.

     "Material Adverse Effect" means, with respect to any Party, any change in,
effect on, or circumstance that, individually or in the aggregate, has had or
would reasonably be likely to have a material and adverse effect on the
operations, business, assets, properties, prospects, results of operations or
financial condition of such party and its Subsidiaries, taken as a whole;
provided, however, that a Material Adverse Effect shall not include (i) any
material adverse effect caused by any change resulting from announcement of the
Merger, (ii) changes in general economic conditions or changes affecting
generally the industries in which such Party operates, (iii) changes in trading
prices for such party's capital stock and (iv) the impact of changes in GAAP.
For the purposes of this Agreement, a termination or the occurrence of any event
which would with or without the passage of time permit a party thereto other
than Silicon to terminate any agreement related to the Media Products or that
certain Cross License Agreement dated April 4, 2000 by and between Silicon and
Wager Works shall be deemed to constitute a "Material Adverse Effect" and a
workforce reduction made by Silicon after the date hereof without the prior
approval of IGT will be deemed to constitute a "Material Adverse Effect".

     "Material Contract" means any executory contract, agreement or other
understanding, whether or not reduced to writing, that is not cancelable within
30 days, to which Silicon, its Subsidiaries, or their property is subject, which
provides for future payments to another Person by the relevant entity or
entities of more than $100,000 in the aggregate in any calendar year.

     "Nasdaq" means the National Association of Securities Dealers Automated
Quotation System.

                                       34
   85

     "NewCo" shall have the meaning ascribed to it in the heading of this
Agreement.

     "New Notes" means the 13% Senior Secured Notes issued by Silicon under the
Securities Purchase Agreement between Silicon and B III Capital Partners LP,
dated as of November 24, 1999.

     "NOL" means the net operating loss of Silicon for the period from November
24, 1999 through the Closing Date, including a write-off of excess and obsolete
inventory (defined as "all inventories in excess of 6 months estimated spares
usage") as of the Closing.

     "NOL-Gross Inventory Amount" shall have the meaning ascribed to it in
Section 2.1(c)(iii).

     "Original Stock Options" means outstanding options to purchase Silicon
Common Stock identified on Schedule 3.2(e) hereto as "original stock options".

     "Pearson Agreement" shall have the meaning ascribed to it in Section
3.4(c).

     "Permitted Liens" means (i) Liens securing Silicon's credit facility, (ii)
Liens for Taxes not yet due and payable, and (iii) mechanics liens and similar
Liens incurred in the ordinary course of business that will not, in any case or
in the aggregate, materially detract from the value of the assets subject
thereto or cause a Material Adverse Effect with respect to Silicon.

     "Person" means an individual, firm, corporation, general or limited
partnership, limited liability company, limited liability partnership, joint
venture, trust, governmental authority or body, association, unincorporated
organization or other entity.

     "Pre-Closing Periods" means all Tax periods ending at or before the Closing
Date and, with respect to any Tax period that includes but does not end at the
Closing Date, the portion of such period that ends at and includes the Closing
Date.

     "Pre-Closing Balance Sheet" has the meaning ascribed to it in Section
2.1(c).

     "Preferred Stock Voting Agreement" has the meaning ascribed to it in the
Recitals.

     "Prepayment Amount" has the meaning ascribed to it in Section 2.1(b).

     "Proceedings" means any suit, action, proceeding, dispute or claim before
or investigation by any Governmental Entity.

     "Proxy Statement" means the proxy statement of Silicon for the purpose of
soliciting proxies from the Silicon stockholders to vote in favor of the
adoption of this Agreement at the Silicon Special Meeting, together with any
accompanying letter to stockholders, notice of meeting form of proxy, and any
amendments or supplements of any of these.

     "Restructuring Agreement" shall mean that certain Restructuring Agreement
by and between Silicon and BIII Capital Partners, L.P., dated as of November 24,
1999.

     "Retention Agreements" has the meaning assigned to it in Section 5.9(k).

     "Returns" means all returns, reports, estimates, declarations and
statements of any nature relating to, or required to be filed in connection
with, any Taxes, including information returns or reports with respect to backup
withholding and other payments to third parties.

     "SEC" means the Securities and Exchange Commission.

     "Securities Act" means the Securities Act of 1933, as amended, and all
rules and regulations promulgated thereunder.

     "Series D Certificate of Determination" means the Certificate of
Determination for Silicon's Series D Preferred Stock.

     "Series D Preferred Stock" means the Series D Convertible Redeemable
Preferred Stock of Silicon.

                                       35
   86

     "Series E Certificate of Determination" means the Certificate of
Determination for Silicon's Series E Preferred Stock.

     "Series E Preferred Stock" means the Series E Convertible Redeemable
Preferred Stock of Silicon.

     "Series E Warrant" means the Warrant to purchase shares of Series E
Preferred Stock initially issued to B III Capital Partners, L.P. pursuant to the
Restructuring Agreement.

     "Silicon Audited Financial Statements" means the audited consolidated
balance sheets and related consolidated statements of income, retained earnings
and cash flow, and the related notes thereto of Silicon for the years ended
December 31, 1997, 1998 and 1999.

     "Silicon Financial Statements" means the Silicon Audited Financial
Statements and the Silicon Interim Financial Statements.

     "Silicon Interim Financial Statements" means the unaudited balance sheet,
and the related unaudited statements of income, retained earnings and cash flows
of Silicon for the nine-month period ended September 30, 2000.

     "Silicon Latest Balance Sheet" means the latest balance sheet of Silicon
included in the Silicon Interim Financial Statements.

     "Silicon Long-Term Debt" means Silicon's long-term debt (excluding current
portions thereof) and any payments on employment contracts and non-competition
agreements to which Silicon (or a predecessor in interest of Silicon) is a
party, including, without limitation, contingent severance obligations.

     "Silicon Stockholders Meeting" means the special meeting of the Silicon
stockholders for the purpose of approving this Agreement.

     "Stock Options" means all options to purchase Silicon Common Stock,
including, without limitation, options issued pursuant to The Silicon Gaming,
Inc. 1999 Long Term Compensation Plan, The Silicon Gaming, Inc. Amended and
Restated 1994 Stock Option Plan, and the Silicon Gaming, Inc. 1997 Nonstatutory
Stock Option Plan.

     "Stockholders Agreement" has the meaning ascribed to it in Section 6.2(g).

     "Subsidiaries" means corporations, partnerships, joint ventures,
associations, trusts, unincorporated organizations, limited liability companies
or other entities, 50% or more of the outstanding voting securities or interests
of which (or the right to select a majority of the Board of Directors or other
governing body), or, if there are no such voting securities or interests, 50% or
more of the equity interests of which, are directly or indirectly owned by
Silicon, provided, that except as expressly identified herein, WagerWorks shall
not be considered a Subsidiary for the purpose of this Agreement.

     "Superior Proposal" has the meaning ascribed to it in Section 5.3(c).

     "Surviving Corporation" has the meaning ascribed to it in Section 1.2.

     "Taxes" means any federal, state, local or other taxes (including, without
limitation, income, alternative minimum, franchise, property, sales, use, lease,
excise, premium, payroll, wage, employment or withholding taxes), fees, duties,
assessments, withholdings or governmental charges of any kind whatsoever
(including interest, penalties and additions to tax).

     "Transaction Costs" means, to the extent not included in the Pre-Closing
Balance Sheet or otherwise deducted from the Aggregate Merger Consideration
pursuant to Section 2.1(b), (i) all costs and expenses incurred by Silicon in
furtherance of the Merger and any other transactions contemplated by this
Agreement, including, but not limited to, accounting, legal, investment banker
and financial advisor fees, fairness opinion fees and costs and costs and
expense incurred for preparing, filing and delivering the Proxy Statement and
holding the Silicon Stockholder Meeting, (ii) all costs and expenses incurred by
Silicon, including, but not limited to, accounting, legal, investment banker and
financial advisor fees and fairness opinion fees related to the WagerWorks
Disposition, (iii) all amounts paid or payable under any Retention Agreements,
including,

                                       36
   87

but not limited to, amounts disclosed on Schedule 5.9(h), (iv) one-half of the
estimated amount of the costs of providing the insurance coverage required under
Section 5.13(b) hereof, (v) any costs to obtain the insurance specified in
paragraph (b) of Schedule 2 to the Preferred Stock Voting Agreement, assuming
that B III makes an election for Silicon to obtain such insurance and (vi) the
amounts set forth in paragraph (c) of Schedule 2 to the Preferred Stock Voting
Agreement, in the event that B III elects to increase the maximum
indemnification amount set forth therein.

     "Voting Agreements" has the meaning ascribed to it in the Recitals.

     "WagerWorks" means WagerWorks, Inc., a Delaware corporation.

     "WagerWorks Disposition" means the disposition of Silicon's equity interest
in WagerWorks other than the WagerWorks Shares.

     "WagerWorks Disposition Date" means the date the shares of WagerWorks owned
by Silicon, other than the WagerWorks Shares, are disposed of.

     "WagerWorks Shares" means the shares of common stock of WagerWorks owned by
Silicon after the WagerWorks Disposition, and which, in the aggregate, equal
4.9% of the equity interest of WagerWorks, on a fully-diluted basis, on the date
of this Agreement.

     "WagerWorks Warrant" has the meaning ascribed to it in Section 6.2(e).

                                   ARTICLE 9

                                 MISCELLANEOUS

     9.1 Notices.  All notices under this Agreement must be in writing and will
be deemed to have been given upon receipt of delivery by: (a) personal delivery
to the designated individual; (b) certified or registered mail, postage prepaid,
return receipt requested; (c) a nationally recognized overnight courier service
(against a receipt therefore); or (d) facsimile transmission with confirmation
of receipt. All such notices must be addressed as follows or to such other
address as to which any party hereto may have notified the other in writing:

     If to IGT, to:

       International Gaming Technology
        9205 Prototype Drive
        Reno, Nevada 68511
        Attn: Sara Beth Brown and J. Kenneth Creighton
        Facsimile transmission no.: (775) 448-0120

     With a copy to:

       O'Melveny & Myers LLP
        114 Pacifica, Suite 100
        Irvine, California 92618
        Attn: J. Jay Herron
        Facsimile transmission no.: (949) 737-2300

     If to Silicon, to:

       Silicon Gaming, Inc.
        3800 West Bayshore Road
        Palo Alto, California 95203
        Attn: Andrew S. Pascal
        Facsimile transmission no.: (650) 842-9001

                                       37
   88

     With a copy to:

       Squire, Sanders & Dempsey L.L.P.
        40 North Central Ave.,
        Suite 2700
        Phoenix, AZ 85044
        Attn: Joseph M. Crabb
        Facsimile transmission no.: (602) 253-8129

     9.2 Headings; Gender.  When a reference is made in this Agreement to a
section, exhibit or schedule, such reference will be to a section, exhibit or
schedule of this Agreement unless otherwise indicated. The table of contents and
headings contained in this Agreement are for reference purposes only and will
not affect in any way the meaning or interpretation of this Agreement. All
personal pronouns used in this Agreement will include the other genders, whether
used in the masculine, feminine or neuter gender, and the singular will include
the plural and vice versa, whenever and as often as may be appropriate.

     9.3 Entire Agreement; No Third Party Beneficiaries.  This Agreement
(including the documents, exhibits and instruments referred to herein) (a)
constitutes the entire agreement and supersedes all prior agreements, and
understandings and communications, both written and oral, among the parties with
respect to the subject matter hereof, including the Letter Agreement, and (b) is
not intended to confer upon any person other than the parties to this Agreement
any rights or remedies under this Agreement.

     9.4 Governing Law.  This Agreement will be governed and construed in
accordance with the laws of the State of Nevada without regard to any applicable
principles of conflicts of law. Each party to this Agreement hereby irrevocably
(a) submits (to the fullest extent permitted by applicable law) to the
jurisdiction of any Nevada state or federal court sitting in the Nevada, over
any action or proceeding arising out of or relating to this Agreement and (b)
waives, to the fullest extent permitted by law, any objection each may now or
hereafter have, to the laying of venue in any such action or proceeding in any
such court as well as any right each may now or hereafter have, to remove any
such action or proceeding, once commenced, to another court on the grounds of
forum non conveniens or otherwise.

     9.5 Assignment.  Neither this Agreement nor any of the rights, interests or
obligations under it will be assigned by any of the parties to this Agreement
(whether by operation of law or otherwise) without the prior written consent of
the other parties.

     9.6 Severability.  If any term or other provision of this Agreement is
invalid, illegal or incapable of being enforced by reason of any rule of law or
public policy, all other conditions and provisions of this Agreement will
nevertheless remain in full force and effect so long as the economic or legal
substance of the transactions contemplated hereby is not affected in any adverse
manner to any party.

     9.7 Counterparts.  This Agreement may be executed in multiple counterparts,
each of which will be deemed an original and all of which taken together will
constitute one and the same document.

     9.8 Amendment.  This Agreement may only be amended by an instrument in
writing signed by each of the parties to this Agreement.

                                       38
   89

     IN WITNESS WHEREOF, the parties to this Agreement have caused it to be
signed by their respective duly authorized officers as of the date first above
written.

                                          INTERNATIONAL GAME TECHNOLOGY

                                          By:
                                            ------------------------------------
                                          Name:
                                          Title:

                                          INTERNATIONAL GAME ACQUISITION
                                          CORPORATION

                                          By:
                                            ------------------------------------
                                          Name: Sarah Beth Brown
                                          Title:  President

                                          SILICON GAMING, INC.

                                          By:
                                            ------------------------------------
                                          Name: Andrew S. Pascal
                                          Title:  Chairman of the Board, Chief
                                                  Executive
                                              Officer and President

                                       39
   90

                                                                       EXHIBIT A

                            FORM OF VOTING AGREEMENT

                                VOTING AGREEMENT

                                                               December 19, 2000

International Game Technology
9205 Prototype Drive
Reno, Nevada 68511
Attn: Sarah Beth Brown

        Re: Agreement of Principal Stockholder Concerning Transfer and Voting of
            Shares of Silicon

     I understand that you and Silicon (the "Company"), of which the undersigned
is a significant stockholder, are prepared to enter into an agreement for the
merger of a wholly-owned subsidiary ("Sub") of you with and into the Company,
but that you have conditioned your willingness to proceed with such agreement
(the "Agreement") upon your receipt from me of assurances satisfactory to you of
my support of and commitment to the Merger. I am familiar with the Agreement and
the terms and conditions of the Merger. Terms used but not otherwise defined
herein shall have the same meanings as are given them in the Agreement. In order
to evidence such commitment and to induce you to enter into the Agreement, I
hereby represent and warrant to you and agree with you as follows:

          1. Voting.  I will vote or cause to be voted all shares of capital
     stock of the Company owned of record or beneficially owned or held in any
     capacity by me or under my control, by proxy or otherwise, in favor of the
     Merger and other transactions provided for in or contemplated by the
     Agreement and against any inconsistent proposals or transactions.

          2. Ownership.  As of the date hereof, my only ownership of, or
     interest in, equity securities of the Company, including proxies granted to
     me, consists solely of the interests described in Schedule 1 attached
     hereto (collectively, the "Shares").

          3. Restriction on Transfer.  I will not sell, transfer, pledge or
     otherwise dispose of any of the Shares or any interest therein (including
     the granting of a proxy to any person) or agree to sell, transfer, pledge
     or otherwise dispose of any of the Shares or any interest therein prior to
     the Merger, without your express written consent. Any transferee of the
     Shares must, as a condition to receipt of such Shares, agree to bound by
     the terms hereof, in a form satisfactory to you.

          4. Share Legend.  If you request, the undersigned shall have the
     following legend has been placed on the certificates for the Shares:

        THE SHARES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO THE TERMS AND
        CONDITIONS OF A VOTING AGREEMENT DATED DECEMBER 19, 2000 BETWEEN THE
        REGISTERED HOLDER HEREOF AND IGT, A COPY OF WHICH AGREEMENT IS ON FILE
        AT THE PRINCIPAL OFFICES OF IGT.

          5. Effective Date; Succession; Remedies; Termination.  Upon your
     acceptance and execution of the Agreement, this letter agreement shall
     mutually bind and benefit you and me, any of our heirs, successors and
     assigns and any of your successors. You will not assign the benefit of this
     letter agreement other than to a wholly owned subsidiary. I agree that in
     light of the inadequacy of damages as a remedy, specific performance shall
     be available to you, in addition to any other remedies you may have for the
     violation of this letter agreement. This letter agreement shall terminate
     on May 30, 2001, or such later date, if any, to which IGT and the Company
     agree to extend the date specified in Section 7.1(c) of the Agreement.

          6. Nature of Holdings; Shares.  All references herein to our holdings
     of the Shares shall be deemed to include Shares held or controlled by the
     undersigned, individually, jointly, or in any other capacity, and shall
     extend to any securities issued to the undersigned in respect of the
     Shares.

                                       A-1
   91

                                          [PRINCIPAL STOCKHOLDER]:

                                          By:
                                            ------------------------------------

AGREED:

INTERNATIONAL GAME TECHNOLOGY, a Nevada corporation

By:
    --------------------------------------------------------

Name:
      -------------------------------------------------------

Its:
    --------------------------------------------------------
   92

                                   SCHEDULE 1



CLASS   NUMBER OF SHARES   RECORD OWNER   BENEFICIAL OWNER   PROXY HOLDER
- -----   ----------------   ------------   ----------------   ------------
                                                 

   93

                                                                       EXHIBIT B

                    FORM OF PREFERRED STOCK VOTING AGREEMENT

December 19, 2000

International Game Technology
9205 Prototype Drive
Reno, Nevada 68511

        Re: Agreement of B III Capital Partners, L.P., a Delaware limited
            partnership ("B III"), Concerning Series D Preferred Stock and
            Series E Warrants of Silicon Gaming ("Silicon")

     B III understands that you and Silicon (the "Company"), of which the
undersigned is a significant stockholder, are prepared to enter into an
agreement for the merger of a wholly-owned subsidiary ("Sub") of you with and
into the Company in the form attached hereto as Exhibit A (the "Agreement"), but
that you have conditioned your willingness to proceed with such agreement upon
your receipt from B III of assurances satisfactory to you of our support of and
commitment to the Merger. B III is familiar with the Agreement and the terms and
conditions of the Merger. Terms used but not otherwise defined herein shall have
the same meanings as are given them in the Agreement. In order to evidence such
commitment and to induce you to enter into the Agreement, B III hereby represent
and warrant to you and agree with you as follows:

     1. Voting.

     (a) Subject to the provisions of Section 1(b), B III will vote or cause to
be voted all shares of capital stock of Silicon now or hereafter owned of record
or beneficially owned or held in any capacity by B III or under B III control,
by proxy or otherwise, in favor of the Merger and other transactions provided
for in or contemplated by the Agreement and against any inconsistent proposals
or transactions.

     (b) The obligations of B III under this Agreement, including the
obligations to vote for and consent to the Merger and the transactions
contemplated by the Merger Agreement shall be subject to the condition precedent
that Silicon shall have completed the WagerWorks Disposition pursuant to a
transaction or series of transactions acceptable to and approved by B III.

     2. Waiver of Redemption Rights.  From the date hereof through the earlier
of (a) the Closing Date and (b) the termination of the Agreement, B III hereby
waives its rights, if any, as a holder of Silicon's Series D Preferred Stock to
cause Silicon pursuant to Section 2(c) of that certain Certificate of
Determination of Preferences and Relative, Participating, Optional and Other
Special Rights of Preferred Stock and Qualifications, Limitations and
Restrictions of Series D Preferred Stock of Silicon dated as of November 24,
1999 to redeem such Series D Preferred Stock held by B III or any other
provision thereof or of any other agreement, to cause Silicon to redeem shares
of Series D Preferred Stock. B III hereby agrees that upon consummation of the
Merger its shares of Series D Preferred Stock will be converted into a right to
receive cash as specified in Section 2.1(d) of the Agreement and it shall have
no other rights with respect to such shares. B III acknowledges that Silicon
may, in its discretion, modify the terms of outstanding Stock Options (other
than an increase in the number of shares of Silicon Common Stock subject to such
Stock Options and other than the terms of any Original Stock Options) prior to
the Closing, including without limitation modifying or waiving the exercise
price thereof, and hereby consents and agrees thereto and hereby waives any
adjustment to the conversion price of shares of preferred stock or warrants it
owns that would be caused by such action.

     3. Termination of Warrants.  B III hereby agrees that upon the Closing Date
and subject to effectiveness of the Merger and payment of the Aggregate Merger
Consideration, it shall surrender to the surviving corporation all its right,
title and interest in the unexercised warrants issued pursuant to each of (a)
the Amended and Restated Warrant Agreement dated as of July 8, 1998, by and
between Silicon and B III, and (b) the Warrant Agreement dated November 24,
1999, by and between Silicon and B III, except to the extent exercised as a
result of the exercise of Exchange Warrants (collectively, the "Warrant
Agreements") and shall treat such warrants and the Warrant Agreements as having
terminated upon the Effective Time, each having no further legal effect.

                                       B-1
   94

     4. Ownership.  As of the date hereof, B III's only ownership of, or
interest in, equity securities of Silicon, including all warrants and proxies
granted to B III or any other rights to purchase shares of capital stock of
Silicon, consists solely of the interests described in Schedule 1 attached
hereto (collectively, the "Shares").

     5. Restriction on Transfer.  B III will not sell, transfer, pledge or
otherwise dispose of any of the Shares or any interest therein (including the
granting of a proxy to any person) or agree to sell, transfer, pledge or
otherwise dispose of any of the Shares or any interest therein prior to the
Merger, without your express written consent which consent you may withhold in
your sole and absolute discretion. Any transferee of the Shares must, as a
condition to receipt of such Shares, agree to be bound by the terms hereof, in a
form satisfactory to you. B III shall not convert its shares of Series D
Preferred Stock into shares of Common Stock during the term of this Agreement.

     6. Share Legend.  If you request, B III shall have the following legend has
been placed on the certificates for the Shares:

     THE SHARES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO THE TERMS AND
     CONDITIONS OF A PREFERRED STOCK VOTING AGREEMENT DATED DECEMBER 19, 2000
     BETWEEN THE REGISTERED HOLDER HEREOF AND IGT, A COPY OF WHICH AGREEMENT IS
     ON FILE AT THE PRINCIPAL OFFICES OF IGT.

     7. Repayment of Debt; General Release.  As of the date hereof, the
aggregate outstanding principal balance of all amounts owed by Silicon or its
Subsidiaries to B III, including any and all amounts owed to B III pursuant to
the Amended Notes and New Notes, is $11,328,018.67 (the "Outstanding Debt"). B
III hereby acknowledges and agrees that, upon the consummation of the Merger and
repayment in full, in cash, of the Outstanding Debt, plus any and all accrued
and unpaid interest and other amounts due thereon (including the premium payable
under Section 6.6(a) of the Securities Purchase Agreement governing the New
Notes) through and including the Effective Time, it shall release Silicon, in
the form of general release reasonably satisfactory to you and B III, subject to
the matters set forth in Schedule 2 attached hereto, from any further
liabilities and obligations of any nature whatsoever relating to Silicon,
including, without limitation obligations under the Amended Notes and New Notes
and that certain Amended and Restated Security Agreement dated November 24,
1999, by and between B III and Silicon and its Subsidiaries (the "Security
Agreement") and shall treat all B III's contractual rights, including, without
limitation, all rights pursuant to the Amended Notes, New Notes, the
Stockholders Agreement, the Restructuring Agreement by and between Silicon,
management stockholders and B III dated November 24, 1999, and the Securities
Purchase Agreement, dated as of September 30, 1997, by and between Silicon and B
III, as amended, and the Security Agreement as having terminated upon such
repayment to B III, each having no further legal effect.

     8. No Solicitation.  From the date hereof until the termination hereof, B
III will not, directly or indirectly, (i) take any action to solicit, initiate
or encourage any Acquisition Proposal or (ii) engage in negotiations or
discussions with, or disclose any nonpublic information relating to Silicon or
any subsidiary of Silicon (other than WagerWorks) to, or otherwise assist,
facilitate or encourage, any person (other than you and Sub) that may be
considering making, or has made, an Acquisition Proposal. B III will notify you
and Sub within 24 hours after receipt by B III of any Acquisition Proposal or
any indication that any such third party is considering making an Acquisition
Proposal or any request for nonpublic information relating to Silicon or any
subsidiary of Silicon (other than WagerWorks) or for access to the properties,
books or records of Silicon or any such subsidiary by any such third party that
may be considering making, or has made, an Acquisition Proposal and will keep
you fully informed of the status and details of any such Acquisition Proposal,
indication or request.

     9. Effective Date; Succession; Remedies; Termination.  Upon acceptance and
execution of the Agreement, this letter agreement shall mutually bind and
benefit you and B III, any of B III's heirs, successors and assigns and any of
your successors. B III will not assign the benefit of this letter agreement
other than to a wholly owned subsidiary. B III agrees that in light of the
inadequacy of damages as a remedy, specific performance shall be available to
you, in addition to any other remedies you may have for the violation of this

                                       B-2
   95

letter agreement. This letter agreement shall terminate on the earliest of (i)
any termination of the Agreement, (ii) the amendment of the Agreement or (iii)
May 30, 2001.

     10. Nature of Holdings; Shares.  All references herein to B III's holdings
of the Shares shall be deemed to include Shares held or controlled by the
undersigned, individually, jointly, or in any other capacity, and shall extend
to any securities issued to the undersigned in respect of the Shares.

                                       B-3
   96

                                          B III CAPITAL PARTNERS, L.P.,
                                          A LIMITED PARTNERSHIP

                                          BY: DDJ CAPITAL III, LLC,
                                               ITS GENERAL PARTNER

                                          BY: DDJ CAPITAL MANAGEMENT, LLC,
                                               ITS MANAGER:

                                          By:
                                            ------------------------------------

                                          Name:
                                              ----------------------------------

                                          Its:
                                            ------------------------------------

AGREED:

INTERNATIONAL GAME TECHNOLOGY, a Nevada corporation

By:
    --------------------------------------------------------

Name:
      -------------------------------------------------------

Its:
    --------------------------------------------------------

AGREED TO AND ACKNOWLEDGED (WITH RESPECT TO
SCHEDULE 2 ONLY)

SILICON GAMING, INC., a California corporation

By:
    --------------------------------------------------------

Name:
      -------------------------------------------------------

Its:
    --------------------------------------------------------
   97

                                   SCHEDULE 1



CLASS   NUMBER OF SHARES   RECORD OWNER   BENEFICIAL OWNER   PROXY HOLDER
- -----   ----------------   ------------   ----------------   ------------
                                                 

   98

                                   SCHEDULE 2

                                       TO

                        PREFERRED STOCK VOTING AGREEMENT

     At closing, Section 7.1 of the Restructuring Agreement dated as of November
24, 1999 by and between Silicon and B III would be amended and restated to
provide the following:

          (a) Indemnification obligations would be narrowed to relate solely to
     third-party claims.

          (b) Silicon and IGT would be obligated to indemnify B III for 50% of
     all losses incurred by B III, including the fees of separate counsel for B
     III, to be selected by B III at its option. Unless counsel for IGT, Silicon
     and their respective directors and officers determines that there is a
     conflict of interest, B III would be entitled to elect to be represented by
     such counsel at no expense to B III. In the event B III elects to utilize
     its own counsel for all or any portion of the defense of any claim, the
     expenses of such counsel shall be paid as set forth in the first sentence
     of this clause (b). In the alternative, B III shall have the right to
     require Silicon, by election made by B III prior to February 22, 2001, to
     have B III named as an additional loss payee on Silicon's current directors
     and officers insurance policy or obtain such other insurance coverage
     acceptable to B III, provided that such additional coverage can be obtained
     and that the cost thereof is reasonable.

          (c) The indemnification obligations described above would be capped at
     an aggregate of $500,000 (i.e., 50% coverage on up to $1,000,000 of
     losses); provided that B III may elect to increase prior to February 22,
     2001 such aggregate to up to $2,500,000 (i.e., 50% coverage on $5,000,000
     of losses) and the Aggregate Merger Consideration would be reduced at the
     rate of $75,000 for each $500,000 increase (i.e., 50% coverage on each
     $1,000,000 of additional losses).

          (d) IGT and Silicon would agree to cooperate with B III in the defense
     of any covered third party claim and would provide such documents and other
     information reasonably requested by B III or its counsel.

          (e) The form of Amended and Restated Indemnification Agreement and
     Release would, at Closing, be attached as an Exhibit to the Preferred Stock
     Voting Agreement. B III and Silicon agree to act diligently following the
     execution of the Merger Agreement to inquire about the availability and
     costs of insurance. The February 22, 2001 deadlines set forth in paragraphs
     (b) and (c) may be extended if necessary to allow adequate time to complete
     any inquiry being made concerning the availability and costs of insurance
     provided that (i) Silicon and B III have acted diligently after the date of
     Merger Agreement to inquire about the availability and costs of insurance
     and have undertaken to obtain underwritten coverage and (ii) in no event
     may the deadline be extended beyond April 6, 2001 without the prior written
     consent of IGT. IGT shall be considered a third party beneficiary of the
     undertakings and conditions contained in this paragraph (e).
   99

                                                                       EXHIBIT C

                              CONSULTING AGREEMENT

     This Consulting Agreement ("Agreement") is made as of December 19, 2000 by
and between International Game Technology, a Nevada corporation (the "IGT"), and
               , an individual ("Consultant").

     WHEREAS, IGT, a Nevada corporation and a direct wholly owned subsidiary of
IGT ("Sub") and Silicon Gaming, a Nevada corporation ("Silicon"), have entered
into an Agreement and Plan of Merger, dated December 19, 2000, pursuant to which
Silicon will merge with and into Sub, with Sub being the surviving corporation
(the "Merger"); and

     WHEREAS, upon consummation of the Merger and Consultant's concurrent
resignation from Silicon, IGT wishes to retain Consultant to act as a consultant
to IGT under the terms and conditions set forth in this Agreement.

     NOW, THEREFORE, in consideration of the premises and mutual covenants in
this Agreement, and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties agree as follows:

     1. Definitions.

     (a) "Company's Business" means (i) the development, manufacturing,
marketing and distribution of gaming products, (ii) the development, marketing
and operation of wide-area progressive systems, and (iii) the business of
Silicon as conducted by Silicon immediately prior to consummation of the Merger.

     (b) "Confidential Information" means information that would constitute a
trade secret under the Uniform Trade Secrets Act or that otherwise is not in the
public realm and that is developed, owned or obtained by IGT, including, without
limitation, information developed by Consultant in the course of performing the
Consulting Services, IGT's technical information, marketing and financial
information, customer information and sales information.

     (c) "Person" means an individual, corporation, partnership, limited
liability company, association, trust or other entity or organization,
including, without limitation, a government or political subdivision or an
agency or instrumentality of a government or political subdivision.

     (d) "Work Product" means: (i) any and all discoveries, inventions and know
how, including, without limitation, any and all test data, findings, designs,
machines, devices, apparatus, compositions, methods or processes, and/or any
improvements of the foregoing, made, conceived, discovered or developed by
Consultant, whether alone or in conjunction with others, which arise in any way
from, during or as a result of the performance of the Consulting Services, or
that are derived from, are based upon or utilize in any way any proprietary
information, data, materials or products belonging to IGT, whether during or
after the Term (as defined below); and (ii) all documents, reports or materials
of any kind prepared by Consultant in performing the Consulting Services.

     2. Retention and Compensation.

     (a) Consulting Services.  IGT retains Consultant for the purpose of
assisting IGT with the transition associated with the change in ownership of
Silicon that will occur as a result of the Merger. Consultant agrees to make
himself reasonably available to assist IGT in such transition and the transfer
of knowledge relating to Silicon and its subsidiaries provided that nothing in
this Agreement shall obligate the Consultant to provide more than 100 aggregate
hours of service to IGT during the Term of this Agreement or, after the third
month following the date of this Agreement, to compromise or result in the
breach of Consultant's duties to his employer.

                                       C-1
   100

     (b) Compensation and Expenses.  During the Term (which is defined below),
IGT shall pay the Consultant six payments of $4,166.67, payable monthly in
advance during the first three months and at the end of each month during the
last three months, subject to applicable withholding taxes.

     (c) Benefits and Perquisites.  During the Term, IGT shall reimburse
Consultant for his reasonable and documented out of pocket expenses for travel,
telephone and any related incidentals. Except as provided in this Section 2,
Consultant shall not be entitled to any other benefits or perquisites.

     3. Confidentiality.  Consultant shall keep in strict confidence, and will
not, directly or indirectly, at any time, during and after the Term, disclose,
furnish, disseminate, make available or, except in the course or performing his
duties as a Consultant under this Agreement, use any Confidential Information,
without limitation as to when or how Consultant may have acquired such
information.

     4. Nonsolicitation.  Consultant shall not, directly or indirectly, at any
time during the Term solicit or induce or attempt to solicit or induce any
employee, representative, agent or consultant of IGT, Silicon or Sub to
terminate his, her or its employment, representation or other association with
IGT, Silicon or Sub.

     5. Assignment.  All Work Product is deemed a "work for hire" in accordance
with the U.S. Copyright Act and is owned exclusively by IGT. If, and to the
extent, any of the Work Product is not considered a "work for hire," Consultant
shall, without further compensation, assign to IGT, and does hereby assign to
IGT, Consultant's entire right, title and interest in and to all Work Product.
At IGT's expense and at IGT's request, Consultant shall provide reasonable
assistance and cooperation, including, without limitation, the execution of
documents in order to obtain, enforce and/or maintain IGT's proprietary rights
in the Work Product throughout the world. Consultant appoints IGT as its agent
and grants IGT a power of attorney for the limited purpose of executing all such
documents.

     6. Publication.  Consultant shall not publish or submit for publication, or
otherwise disclose to any Person other than IGT, any data or results from
Consultant's work on behalf of IGT without the prior written consent of IGT.

     7. Term and Termination.

     (a) Term.  The term of this Agreement commences on the effective date of
the Merger and continues for six months (the "Term") unless earlier terminated
pursuant to Section 7(b).

     (b) Termination.  This Agreement will terminate upon Consultant's death or
permanent disability or, beginning three months after the effective date of the
Merger, the inability of Consultant to perform without comprising or breaching
Consultant's duties to his employer.

     (c) Effect of Termination; Effective Time.  Upon termination or expiration
of this Agreement: (i) IGT promptly shall pay to Consultant all amounts due and
owing subject to applicable withholding taxes; and (ii) Consultant promptly
shall return, in good condition, all property of IGT, including, without
limitation, all copies of the Confidential Information. The term of this
Agreement shall commence concurrent with the closing of the Merger and the
concurrent resignation of Consultant as an employee of Silicon.

     (d) Survival.  The obligations of IGT and Consultant set forth in this
Agreement that by their terms extend beyond or survive the termination or
expiration of this Agreement will not be affected or diminished in any way by
the termination or expiration of this Agreement.

     8. General.

     (a) No License.  This Agreement may not be construed to grant and does not
grant to Consultant any right or license with respect to any know-how,
Confidential Information, trademarks or other proprietary right of IGT (apart
from the right to make necessary use of the same in rendering Consulting
Services under this Agreement).

     (b) Gaming Regulatory Authority Approvals.  IGT and Consultant agree that
performance of this Agreement is contingent upon obtaining any necessary initial
and continuing approvals or licenses from any gaming regulatory authorities
having jurisdiction over the parties hereto or the subject matter of this

                                       C-2
   101

Agreement. If any approval or license is denied, suspended or revoked, this
Agreement shall terminate immediately; provided, however, that if the denial,
suspension or revocation affects only part performance of this Agreement, the
parties hereto may by mutual agreement continue to perform under this Agreement
to the extent it is not affected by any denial, suspension or revocation.
Neither party shall be liable to the other for any damages, fees, costs or
expenses arising from any failure to perform this Agreement as a result of any
applicable gaming regulatory agency having taken any of the above-mentioned
actions.

     (c) Lack of Agency.  Neither party will be responsible, either directly or
indirectly, for any liability of the other party. Neither party is deemed an
agent of the other party and no actions of either party will be inferred to
create an agency relationship by third parties. Consultant shall not have the
authority to bind or obligate IGT in any way and Consultant does not represent
that he has such authority.

     (d) Severability.  Should any provisions of this Agreement be held illegal,
invalid or unenforceable by any court or regulatory agency of competent
jurisdiction, such provision is to be modified by such court or regulatory
agency in compliance with the law and, as modified, enforced. All other terms
and conditions of this Agreement will remain in full force and effect and are to
be construed in accordance with the modified provision as if such illegal,
invalid or unenforceable provision had not been contained in this Agreement.

     (e) Applicable Law.  This Agreement and all disputes arising under it are
governed by the laws of the State of Nevada. Each party submits to the
jurisdiction of the federal and state courts located within the State of Nevada.

     (f) No Waiver.  None of the terms of this Agreement is deemed waived or
amended by either party unless such a waiver or amendment specifically
references this Agreement and is in writing signed by an authorized
representative of the party to be bound. Any such signed waiver is effective
only in the specific instance and for the specific purpose for which it was made
or given.

     (g) Assignment.  This Agreement is binding upon and inures to the benefit
of the heirs, successors, representatives and assigns of each party, but
Consultant may not assign or delegate this Agreement without the prior written
consent of IGT.

     (h) Headings.  The headings in this Agreement are inserted for convenience
only and do not affect the meaning of this Agreement.

     (i) Counterparts.  This Agreement may be executed in any number of
counterparts, each of which is an original, and all of which are one and the
same instrument.

     (j) Third Parties.  Nothing expressed or implied in this Agreement is
intended, or may be construed, to confer upon or give any Person other than IGT
and Consultant any rights or remedies under, or by reason of, this Agreement.

     (k) Notices.  All notices and other communications required or permitted
under this Agreement must be in writing and are duly given if delivered
personally, telecopied (which is confirmed) or sent by a nationally recognized
overnight courier service (providing proof of delivery) to the parties at the
following addresses (or at such other address for a party as is specified by
like notice):

     (i) If to IGT:

        International Gaming Technology
        9205 Prototype Drive
        Reno, Nevada 68511
        Attn: Sara Beth Brown and J. Kenneth Creighton
        Facsimile transmission no.: (775) 448-0120

     (ii) If to Consultant:

     (l) Amendment.  This Agreement may be amended only by a writing executed by
the parties to this Agreement.

                                       C-3
   102

     (m) Entire Agreement.  This Agreement is the entire understanding and
agreement between the parties relating to this subject matter and supersedes all
prior contracts, agreements, arrangements, communications, discussions,
representations and warranties, whether oral or written, between the parties
relating to this subject matter.

                                       C-4
   103

     IN WITNESS WHEREOF, IGT and Consultant have executed this Agreement as of
the date and year first above written.

                                          INTERNATIONAL GAME TECHNOLOGY,
                                          a Nevada Corporation

                                          By:
                                            ------------------------------------
                                            Name:
                                            Title:

                                          --------------------------------------

                                          By:
                                            ------------------------------------
   104

                                                                       EXHIBIT D

                              CONSULTING AGREEMENT

     This Consulting Agreement ("Agreement") is made as of December 19, 2000 by
and between International Game Technology, a Nevada corporation (the "IGT"), and
Tom Carlson, an individual ("Consultant").

     WHEREAS, IGT, a Nevada corporation and a direct wholly owned subsidiary of
IGT ("Sub") and Silicon Gaming, a Nevada corporation ("Silicon"), have entered
into an Agreement and Plan of Merger, dated December 19, 2000, pursuant to which
Silicon will merge with and into Sub, with Sub being the surviving corporation
(the "Merger"); and

     WHEREAS, upon consummation of the Merger and Consultant's concurrent
resignation from Silicon, IGT wishes to retain Consultant to act as a consultant
to IGT under the terms and conditions set forth in this Agreement.

     NOW, THEREFORE, in consideration of the premises and mutual covenants in
this Agreement, and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties agree as follows:

     1. Definitions.

     (a) "Company's Business" means (i) the development, manufacturing,
marketing and distribution of gaming products, (ii) the development, marketing
and operation of wide-area progressive systems, and (iii) the business of
Silicon as conducted by Silicon immediately prior to consummation of the Merger.

     (b) "Confidential Information" means information that would constitute a
trade secret under the Uniform Trade Secrets Act or that otherwise is not in the
public realm and that is developed, owned or obtained by IGT, including, without
limitation, information developed by Consultant in the course of performing the
Consulting Services, IGT's technical information, marketing and financial
information, customer information and sales information.

     (c) "Person" means an individual, corporation, partnership, limited
liability company, association, trust or other entity or organization,
including, without limitation, a government or political subdivision or an
agency or instrumentality of a government or political subdivision.

     (d) "Work Product" means: (i) any and all discoveries, inventions and know
how, including, without limitation, any and all test data, findings, designs,
machines, devices, apparatus, compositions, methods or processes, and/or any
improvements of the foregoing, made, conceived, discovered or developed by
Consultant, whether alone or in conjunction with others, which arise in any way
from, during or as a result of the performance of the Consulting Services, or
that are derived from, are based upon or utilize in any way any proprietary
information, data, materials or products belonging to IGT, whether during or
after the Term (as defined below); and (ii) all documents, reports or materials
of any kind prepared by Consultant in performing the Consulting Services.

     2. Retention and Compensation.

     (a) Consulting Services.  IGT retains Consultant for the purpose of
assisting IGT with the transition associated with the change in ownership of
Silicon that will occur as a result of the Merger. Consultant agrees to make
himself reasonably available to assist IGT in the such transition and the
transfer of knowledge relating to Silicon and its subsidiaries provided that
nothing in this Agreement shall obligate the Consultant to provide more than 60
aggregate hours of service to IGT during the Term of this Agreement, or, after
the third month following the date of this Agreement, to compromise or result in
the breach of Consultant's duties to his employer.

                                       D-1
   105

     (b) Compensation and Expenses.  During the Term (which is defined below),
IGT shall pay the Consultant six payments of $2,500, payable monthly in advance
during the first three months and at the end of each month during the last three
months, subject to applicable withholding taxes.

     (c) Benefits and Perquisites.  During the Term, IGT shall reimburse
Consultant for his reasonable and documented out of pocket expenses for travel,
telephone and any related incidentals. Except as provided in this Section 2,
Consultant shall not be entitled to any other benefits or perquisites.

     3. Confidentiality.  Consultant shall keep in strict confidence, and will
not, directly or indirectly, at any time, during and after the Term, disclose,
furnish, disseminate, make available or, except in the course or performing his
duties as a Consultant under this Agreement, use any Confidential Information,
without limitation as to when or how Consultant may have acquired such
information.

     4. Nonsolicitation.  Consultant shall not, directly or indirectly, at any
time during the Term solicit or induce or attempt to solicit or induce any
employee, representative, agent or consultant of IGT, Silicon or Sub to
terminate his, her or its employment, representation or other association with
IGT, Silicon or Sub.

     5. Assignment.  All Work Product is deemed a "work for hire" in accordance
with the U.S. Copyright Act and is owned exclusively by IGT. If, and to the
extent, any of the Work Product is not considered a "work for hire," Consultant
shall, without further compensation, assign to IGT, and does hereby assign to
IGT, Consultant's entire right, title and interest in and to all Work Product.
At IGT's expense and at IGT's request, Consultant shall provide reasonable
assistance and cooperation, including, without limitation, the execution of
documents in order to obtain, enforce and/or maintain IGT's proprietary rights
in the Work Product throughout the world. Consultant appoints IGT as its agent
and grants IGT a power of attorney for the limited purpose of executing all such
documents.

     6. Publication.  Consultant shall not publish or submit for publication, or
otherwise disclose to any Person other than IGT, any data or results from
Consultant's work on behalf of IGT without the prior written consent of IGT.

     7. Term and Termination.

     (a) Term.  The term of this Agreement commences on the effective date of
the Merger and continues for six months (the "Term") unless earlier terminated
pursuant to Section 7(b).

     (b) Termination.  This Agreement will terminate upon Consultant's death or
permanent disability or, beginning three months after the effective date of the
Merger, the inability of Consultant to perform without comprising or breaching
Consultant's duties to his employer.

     (c) Effect of Termination; Effective Time.  Upon termination or expiration
of this Agreement: (i) IGT promptly shall pay to Consultant all amounts due and
owing subject to applicable withholding taxes; and (ii) Consultant promptly
shall return, in good condition, all property of IGT, including, without
limitation, all copies of the Confidential Information. The term of this
Agreement shall commence concurrent with the closing of the Merger and the
concurrent resignation of Consultant as an employee of Silicon.

     (d) Survival.  The obligations of IGT and Consultant set forth in this
Agreement that by their terms extend beyond or survive the termination or
expiration of this Agreement will not be affected or diminished in any way by
the termination or expiration of this Agreement.

     8. General.

     (a) No License.  This Agreement may not be construed to grant and does not
grant to Consultant any right or license with respect to any know-how,
Confidential Information, trademarks or other proprietary right of IGT (apart
from the right to make necessary use of the same in rendering Consulting
Services under this Agreement).

     (b) Gaming Regulatory Authority Approvals.  IGT and Consultant agree that
performance of this Agreement is contingent upon obtaining any necessary initial
and continuing approvals or licenses from any gaming regulatory authorities
having jurisdiction over the parties hereto or the subject matter of this

                                       D-2
   106

Agreement. If any approval or license is denied, suspended or revoked, this
Agreement shall terminate immediately; provided, however, that if the denial,
suspension or revocation affects only part performance of this Agreement, the
parties hereto may by mutual agreement continue to perform under this Agreement
to the extent it is not affected by any denial, suspension or revocation.
Neither party shall be liable to the other for any damages, fees, costs or
expenses arising from any failure to perform this Agreement as a result of any
applicable gaming regulatory agency having taken any of the above-mentioned
actions.

     (c) Lack of Agency.  Neither party will be responsible, either directly or
indirectly, for any liability of the other party. Neither party is deemed an
agent of the other party and no actions of either party will be inferred to
create an agency relationship by third parties. Consultant shall not have the
authority to bind or obligate IGT in any way and Consultant does not represent
that he has such authority.

     (d) Severability.  Should any provisions of this Agreement be held illegal,
invalid or unenforceable by any court or regulatory agency of competent
jurisdiction, such provision is to be modified by such court or regulatory
agency in compliance with the law and, as modified, enforced. All other terms
and conditions of this Agreement will remain in full force and effect and are to
be construed in accordance with the modified provision as if such illegal,
invalid or unenforceable provision had not been contained in this Agreement.

     (e) Applicable Law.  This Agreement and all disputes arising under it are
governed by the laws of the State of Nevada. Each party submits to the
jurisdiction of the federal and state courts located within the State of Nevada.

     (f) No Waiver.  None of the terms of this Agreement is deemed waived or
amended by either party unless such a waiver or amendment specifically
references this Agreement and is in writing signed by an authorized
representative of the party to be bound. Any such signed waiver is effective
only in the specific instance and for the specific purpose for which it was made
or given.

     (g) Assignment.  This Agreement is binding upon and inures to the benefit
of the heirs, successors, representatives and assigns of each party, but
Consultant may not assign or delegate this Agreement without the prior written
consent of IGT.

     (h) Headings.  The headings in this Agreement are inserted for convenience
only and do not affect the meaning of this Agreement.

     (i) Counterparts.  This Agreement may be executed in any number of
counterparts, each of which is an original, and all of which are one and the
same instrument.

     (j) Third Parties.  Nothing expressed or implied in this Agreement is
intended, or may be construed, to confer upon or give any Person other than IGT
and Consultant any rights or remedies under, or by reason of, this Agreement.

     (k) Notices.  All notices and other communications required or permitted
under this Agreement must be in writing and are duly given if delivered
personally, telecopied (which is confirmed) or sent by a nationally recognized
overnight courier service (providing proof of delivery) to the parties at the
following addresses (or at such other address for a party as is specified by
like notice):

     (i) If to IGT:

        International Gaming Technology
        9205 Prototype Drive
        Reno, Nevada 68511
        Attn: Sara Beth Brown and J. Kenneth Creighton
        Facsimile transmission no.: (775) 448-0120

     (ii) If to Consultant:

     (l) Amendment.  This Agreement may be amended only by a writing executed by
the parties to this Agreement.

                                       D-3
   107

     (m) Entire Agreement.  This Agreement is the entire understanding and
agreement between the parties relating to this subject matter and supersedes all
prior contracts, agreements, arrangements, communications, discussions,
representations and warranties, whether oral or written, between the parties
relating to this subject matter.

                                       D-4
   108

     IN WITNESS WHEREOF, IGT and Consultant have executed this Agreement as of
the date and year first above written.

                                          INTERNATIONAL GAME TECHNOLOGY,
                                          a Nevada Corporation

                                          By:
                                            ------------------------------------
                                            Name:
                                            Title:

                                          TOM CARLSON

                                          By:
                                            ------------------------------------
   109

                                                                       EXHIBIT E

                              AGREEMENT OF MERGER
                                    MERGING
                   INTERNATIONAL GAME ACQUISITION CORPORATION
                                 WITH AND INTO
                              SILICON GAMING, INC.

     Pursuant to Section 1103 of the California General Corporation Law
("CGCL"), Silicon Gaming, Inc., a California corporation, hereby submits the
following agreement of merger ("Agreement of Merger") and applicable officers'
certificates, whereby International Game Acquisition Corporation, a California
corporation, will merge with and into Silicon Gaming, Inc. (the "Merger").

     1. Constituent Corporations.  The names and places of incorporation of the
constituent corporations planning to merge pursuant to this Agreement of Merger
are as follows:

          (a) Silicon Gaming, Inc., a California corporation ("Silicon");

          (b) International Game Acquisition Corporation, a California
     corporation ("NewCo").

     2. Surviving Corporation.  Silicon shall be the surviving corporation of
the Merger (Silicon is hereinafter referred to as the "Surviving Corporation").
The separate existence of NewCo shall cease upon the effective date of the
Merger,             , 2001 (the "Effective Date"), at 12:01 a.m. Pacific
Standard Time (the "Effective Time"), in accordance with the provisions of the
CGCL.

     3. Articles of Incorporation.  The Articles of Incorporation of Silicon, as
amended and restated and filed with the Articles of Merger with the Secretary of
State of the State of California, shall be the Articles of Incorporation of the
Surviving Corporation thereafter unless and until amended in accordance with the
terms of the Articles of Incorporation and as provided by law.

     4. Boards of Directors' Approval.  The Boards of Directors of Silicon and
NewCo, respectively, have approved the terms of this Agreement of Merger.

     5. Shareholders' Approval.  The shareholders of Silicon and NewCo,
respectively have approved the terms of this Agreement of Merger.

     6. Effect on Capital Stock.  At the Effective Time, by virtue of the Merger
and without any further action on the part of NewCo, Silicon or the stockholders
of such entities:

          (a) Capital Stock of NewCo.  Each issued and outstanding share of
     capital stock of NewCo will be converted into and become one fully paid and
     nonassessable share of common stock of the Surviving Corporation.

          (b) Merger Consideration.  The consideration to be paid by IGT for
     100% of the equity interests in Silicon shall be $45,000,000 (the
     "Aggregate Merger Consideration"), of which $2,500,000 (the "Prepayment
     Amount") was previously paid to Silicon on October 17, 2000 upon execution
     of that certain letter agreement (the "Letter Agreement") regarding the
     transaction, and of which the remaining $42,500,000, subject to the
     following adjustments, will be paid at the Effective Time:

             (i) The Aggregate Merger Consideration will be increased, on a
        dollar for dollar basis, in an amount equal to the aggregate of the
        following items, to the extent such items are reflected as current
        assets on the Agreed Upon Pre-Closing Balance Sheet:

                (A) accounts receivables (net of any allowance for doubtful
           accounts); plus

                (B) cash on hand; plus

                (C) prepaid expenses.

                                       E-1
   110

             (ii) The Aggregate Merger Consideration will be decreased, on a
        dollar for dollar basis, in an amount equal to the aggregate of the
        following:

                (A) all obligations and liabilities of Silicon, including
           Transaction Costs incurred but not yet paid by Silicon, that would
           remain outstanding after the Closing as set forth on the Agreed Upon
           Pre-Closing Balance Sheet, provided that any liabilities or
           obligations (including, without limitation, estimates of warranty
           costs, the estimated costs of settling or resolving any pending or
           threatened litigation (other than the Drews Distributing litigation
           identified on Schedule 3.10 to the Agreement) and, if applicable, the
           amount of accounting fees payable by Silicon under Section 6(c)
           hereof) not reflected on the Agreed Upon Pre-Closing Balance Sheet
           shall nevertheless be valued by mutual agreement between Silicon and
           IGT and such amounts shall be treated as reductions in the Aggregate
           Merger Consideration; and

                (B) obligations and liabilities of Silicon retired by IGT prior
           to or as a condition of the Closing (to the extent not included in
           Section 6(b)(ii)(A) above) including, without limitation,
           indebtedness owned to B III under the Amended Notes, the New Notes
           and indebtedness under the Berg Note, each of which shall be paid in
           full, in cash, at the Closing.

             (iii) The Aggregate Merger Consideration will be adjusted if the
        aggregate dollar amount of NOL plus Gross Inventory (the "NOL-Gross
        Inventory Amount") as set forth on the Agreed Upon Pre-Closing Balance
        Sheet is less than $10,000,000 or greater than $13,000,000, as follows:

                (A) If the NOL-Gross Inventory Amount is more than $13,000,000,
           the Aggregate Merger Consideration will be increased by the present
           value of the tax benefit created by the amount of NOL-Gross Inventory
           Amount in excess of $13,000,000 using a 37% tax-rate and a 9.75%
           discount rate; and

                (B) If the NOL-Gross Inventory Amount is less than $10,000,000,
           the Aggregate Merger Consideration will be decreased by the present
           value of the tax benefit lost by the amount of NOL-Gross Inventory
           Amount less than $10,000,000 using a 37% tax-rate and a 9.75%
           discount rate.

          (c) Conversion of Silicon Capital Stock; Conversion Cash.  Subject to
     Section 6(b) of this Agreement of Merger, each share of Silicon Common
     Stock issued and outstanding immediately prior to the Effective Time will
     be converted into the right to receive cash in an amount equal to the
     quotient of the Aggregate Merger Consideration (as adjusted pursuant to
     Section 6(b) hereof) minus the Prepayment Amount to the extent not
     previously reflected on an adjustment to the Aggregate Merger Consideration
     pursuant to Section 6(b) hereof), divided by the total number of shares of
     Silicon Common Stock issued and outstanding at the Effective Time (assuming
     for such purposes that each outstanding share of Series D Preferred Stock
     shall have been converted into 4,384.53149701 shares of Silicon Common
     Stock, all then outstanding Stock Options (excluding the Original Stock
     Options) have been accelerated and exercised in full, each outstanding
     share of Series E Preferred Stock shall have been converted into 1,000
     shares of Silicon Common Stock and any shares issuable as the result of the
     exercise prior to the closing of any Exchange Warrants or any other
     outstanding warrants are issued and outstanding rounded to the nearest
     hundredth of a whole cent (the "Conversion Cash), and each share of Series
     D Preferred Stock issued and outstanding immediately prior to the Effective
     Time will be converted into the right to receive cash in an amount equal to
     the product of 4,384.53149701 multiplied by an amount equal to the
     Conversion Cash and each share of Series E Preferred Stock issued and
     outstanding immediately prior to the Effective Time will be converted into
     the right to receive cash in an amount equal to the product of 1,000
     multiplied by an amount equal to the Conversion Cash.

          (d) Definitions.  In addition to the other defined terms used in this
     Agreement, the following terms when capitalized have the meanings
     indicated.

     "Agreed Upon Pre-closing Balance Sheet" means (1) the Pre-Closing Balance
Sheet if, within three Business Days following delivery of the Pre-Closing
Balance Sheet to International Game Technology, a Nevada corporation ("IGT"),
IGT has not given notice to Silicon of objections to the Pre-Closing Balance
                                       E-2
   111

Sheet, or (2) the Pre-Closing Balance Sheet as amended after any objections by
IGT have been resolved either by the parties or by a "Big 5" accounting firm
selected by mutual agreement of IGT and Silicon.

     "Amended Notes" means the $7.5 million aggregate principal amount of Senior
Discount Notes not exchanged for Series D Preferred Stock of Silicon under the
Restructuring Agreement and certain terms and provisions of which were amended
pursuant to Amendment No. 2 to the Securities Purchase Agreement."

     "Berg Note" means the promissory note issued by Silicon to Mr. Carl Berg,
in the principal amount of $1,000,000, dated as of July 28, 2000.

     "Gross Inventory" means the total amount of inventory reflected on
Silicon's balance sheet as of the Closing Date, determined in accordance with
accounting principles generally accepted in the United States, applied on a
basis consistent with the Pre-Closing Balance Sheet.

     "New Notes" means the 13% Senior Secured Notes issued by Silicon under the
Securities Purchase Agreement between Silicon and B III Capital Partners LP,
dated as of November 24, 1999.

     "NOL" means the net operating loss carry forwards, including a write-off of
excess and obsolete inventory (defined as "all inventories in excess of 6 months
estimated spares usage") as of the closing.

     "Original Stock Options" means options to purchase Silicon Common Stock
issued pursuant to The Silicon Gaming, Inc. Amended and Restated 1994 Stock
Option Plan, and the Silicon Gaming, Inc. 1997 Nonstatutory Stock Option Plan
and identified on Schedule 3.2(e) hereto as "original stock options".

     "Pre-Closing Balance Sheet" means an estimated closing Silicon balance
sheet provided to IGT by Silicon at least seven business days prior to closing.

     "Stock Options" means options to purchase Silicon Common Stock issued
pursuant to The Silicon Gaming, Inc. 1999 Long Term Compensation Plan, The
Silicon Gaming, Inc. Amended and Restated 1994 Stock Option Plan, and the
Silicon Gaming, Inc. 1997 Nonstatutory Stock Option Plan.

     "Transaction Costs" means all costs and expenses incurred by Silicon in
furtherance of the Merger and any other transactions contemplated by this
Agreement, including, but not limited to, accounting, legal, and fairness
opinion fees and costs as well as costs and expense incurred for preparing,
filing and delivering the Proxy Statement and holding the Silicon Stockholder
Meeting.

     7. Further Assurances.  NewCo shall, from time to time, take all such
actions, and execute and deliver, or cause to be executed and delivered, all
such instruments and documents, as may be deemed necessary or advisable to carry
out the intent and purpose of the Merger.

     8. Counterparts.  This Agreement of Merger may be executed in two
counterparts, both of which shall be deemed an original and both of which shall
constitute but one and the same instrument.

                            [Signature page follows]

                                       E-3
   112

     IN WITNESS WHEREOF, the duly authorized, undersigned officers execute the
Agreement of Merger on behalf of their respective corporations on this   day of
            , 2001.

                                          SILICON GAMING, INC.

                                          By:
                                            ------------------------------------
                                          Name: Andrew S. Pascal
                                          Its:    Chairman of the Board,
                                                  President and Chief Executive
                                                  Officer

                                          By:
                                            ------------------------------------
                                          Name:
                                          Its:    Secretary

                                          INTERNATIONAL GAME ACQUISITION
                                          CORPORATION

                                          By:
                                            ------------------------------------
                                          Name: Sarah Beth Brown
                                          Its:    President

                                          By:
                                            ------------------------------------
                                          Name: Sarah Beth Brown
                                          Its:    Secretary
   113

                                    ANNEX B

                                FAIRNESS OPINION

                        [LETTERHEAD OF US BANCORP LIBRA]


                                                               December 19, 2000


The Board of Directors
Silicon Gaming, Inc.
2800 West Bayshore Road
Palo Alto, CA 94303

Dear Members of the Board:

     We understand that Silicon Gaming Inc., a California corporation ("SGIC" or
the "Company"), is considering a transaction (the "Transaction") in which the
Company will be merged with and into a newly formed wholly-owned subsidiary of
International Game Technology, a Nevada corporation ("IGT"), with the Company as
the surviving corporation.

     The proposed Agreement and Plan of Merger between IGT and the Company, as
provided to us by the Company (the "Merger Agreement") provides, among other
things, that IGT will pay $45,000,000 in cash as aggregate merger consideration
(the "Merger Consideration"), subject to adjustment as set forth in the Merger
Agreement. The terms and conditions of the Transaction are more fully set forth
in the Merger Agreement.

     You have requested our opinion as to the fairness, from a financial point
of view, to the Company's equity holders of the proposed merger consideration.

     In the ordinary course of business, U.S. Bancorp Libra, its successors and
affiliates may trade securities of the Company or IGT for their own accounts or
for their customers and accordingly, may at any time hold a long or short
position in such securities. We have been engaged to deliver our opinion by the
Board of Directors of the Company for a fee of $100,000, irrespective of whether
or not the Transaction is consummated.

     Our opinion does not address the Company's underlying business decision to
effect the Transaction or constitute a recommendation to any equity holder of
the Company as to how such equity holder should vote with respect to the
Transaction.

     In rendering this opinion, we have assumed, with your consent, that the
final executed form of the Merger Agreement will not differ in any material
respect from the draft provided to us for our review and that IGT and the
Company will comply with all material terms of the Merger Agreement. You have
not authorized us to, and we have not, solicited indications of interest in a
business combination with the Company from any party; Our opinion does not
address the relative merits of the Transaction contemplated pursuant to the
Merger Agreement as compared to any alternative business transaction that might
be available to the Company.

     In arriving at our opinion, we have, among other things: (i) reviewed
certain publicly available business and historical financial information
relating to the Company, (ii) reviewed certain internal financial information
and other data relating to the business and financial prospects of the Company,
including estimates and financial forecasts prepared by management of the
Company, that were provided to us by the Company and not publicly available,
(iii) discussed the proposed transaction with the Company's largest equity
holder, (iv) discussed the sale process with the Company's management, (v)
conducted discussions with members of the Company's senior management regarding
the information and other data relating to the business and financial prospects
of the Company, (vi) reviewed publicly available financial and stock market data
with respect to certain other companies in lines of business we believe to be
generally comparable to those of the Company, (vii) compared the financial terms
of the Transaction with the publicly available information with respect to the
financial terms of certain other transactions that we believe to be generally
relevant,
   114

(viii) reviewed the Merger Agreement, and (ix) conducted such other financial
studies, analyses, and investigations, and considered such other information as
we deemed necessary or appropriate;

     In connection with our review, at your direction, we have not assumed any
responsibility for independent verification for any of the information reviewed
by us for the purpose of this opinion and have, at your direction, relied on its
being complete and accurate in all material respects. In addition, we have not
made or been provided with any independent evaluation or appraisal of any of the
assets or liabilities (contingent or otherwise) of the Company, nor have we made
any detailed physical inspection of the properties or assets of the Company.

     With respect to the financial forecasts and estimates referred to above, we
have assumed, at your direction, that they have been reasonably prepared on a
basis reflecting the best currently available estimates and judgments of the
Company's management as to the future performance of the Company.

     Our opinion is necessarily based on economic, monetary, market and other
conditions as in effect on, and the information made available to us as of, the
date hereof. It should be understood that, although subsequent developments may
affect this opinion, we do not have any obligation to update, revise or reaffirm
this opinion. Our opinion does not address the Company's underlying business
decision to effect the Transaction or the strategic and operational benefits of
the Transaction. Our opinion is directed only to the fairness, from a financial
point of view to the Company's equity holders of the proposed Merger
Consideration and does not constitute a recommendation to any Company equity
holder as to how such holder should vote with respect to the Transaction.

     In rendering our opinion, we have also assumed that obtaining the necessary
regulatory and governmental approvals for the proposed Transaction will not
significantly delay consummation of the Transaction, and that, in the course of
obtaining such approvals, no requirement or restriction will be imposed that
will have a material adverse effect on the proposed Transaction.

     Based upon and subject to the foregoing, it is our opinion that, as of the
date hereof the Merger Consideration, subject to the adjustments set forth in
the Merger Agreement, is fair to the Company's equity holders taken as a whole
from a financial point of view.

     Our opinion expressed herein is provided solely for the use of the
Company's Board of Directors in evaluating the Transaction and is not on behalf
of, and is not intended to confer rights or remedies upon any person other than
the Company's Board of Directors (including, without limitation, any equity
holder). Our opinion may not be published or otherwise issued or referred to,
nor shall any public reference to U.S. Bancorp Libra be made without our prior
written consent; provided, however, that this opinion may be included in its
entirety and referred to in any prospectus or proxy statement distributed to the
Company's equity holders in connection with the Transaction so long as each
inclusion and reference is in form and substance satisfactory to U.S. Bancorp
Libra.

                                          Very truly yours,

                                          U.S. Bancorp Libra

                                          By: /s/ GREGORY BOUSQUETTE
                                            ------------------------------------
                                            Gregory Bousquette
                                            Managing Director

                                        2
   115

                                    ANNEX C

                               DISSENTER'S RIGHTS

CALIFORNIA CODES
CORPORATIONS CODE
SECTION 1300-1312

     1300. (a) If the approval of the outstanding shares (Section 152)of a
corporation is required for a reorganization under subdivisions(a) and (b) or
subdivision (e) or (f) of Section 1201, each shareholder of the corporation
entitled to vote on the transaction and each shareholder of a subsidiary
corporation in a short-form merger may, by complying with this chapter, require
the corporation in which the shareholder holds shares to purchase for cash at
their fair market value the shares owned by the shareholder which are dissenting
shares as defined in subdivision (b). The fair market value shall be determined
as of the day before the first announcement of the terms of the proposed
reorganization or short-form merger, excluding any appreciation or depreciation
in consequence of the proposed action, but adjusted for any stock split, reverse
stock split, or share dividend which becomes effective thereafter.

     (b) As used in this chapter, "dissenting shares" means shares which come
within all of the following descriptions:

          (1) Which were not immediately prior to the reorganization or
     short-form merger either (A) listed on any national securities exchange
     certified by the Commissioner of Corporations under subdivision (o) of
     Section 25100 or (B) listed on the National Market System of the NASDAQ
     Stock Market, and the notice of meeting of shareholders to act upon the
     reorganization summarizes this section and Sections 1301, 1302, 1303 and
     1304; provided, however, that this provision does not apply to any shares
     with respect to which there exists any restriction on transfer imposed by
     the corporation or by any law or regulation; and provided, further, that
     this provision does not apply to any class of shares described in
     subparagraph (A) or (B) if demands for payment are filed with respect to 5
     percent or more of the outstanding shares of that class.

          (2) Which were outstanding on the date for the determination of
     shareholders entitled to vote on the reorganization and (A) were not voted
     in favor of the reorganization or, (B) if described in subparagraph (A) or
     (B) of paragraph (1) (without regard to the provisos in that paragraph),
     were voted against the reorganization, or which were held of record on the
     effective date of a short-form merger; provided, however, that subparagraph
     (A) rather than subparagraph (B) of this paragraph applies in any case
     where the approval required by Section 1201 is sought by written consent
     rather than at a meeting.

          (3) Which the dissenting shareholder has demanded that the corporation
     purchase at their fair market value, in accordance with Section 1301.

          (4) Which the dissenting shareholder has submitted for endorsement, in
     accordance with Section 1302.

     (c) As used in this chapter, "dissenting shareholder" means the
recordholder of dissenting shares and includes a transferee of record.

     1301. (a) If, in the case of a reorganization, any shareholders of a
corporation have a right under Section 1300, subject to compliance with
paragraphs (3) and (4) of subdivision (b) thereof, to require the corporation to
purchase their shares for cash, such corporation shall mail to each such
shareholder a notice of the approval of the reorganization by its outstanding
shares (Section 152) within 10 days after the date of such approval, accompanied
by a copy of Sections 1300, 1302, 1303, 1304 and this section, a statement of
the price determined by the corporation to represent the fair market value of
the dissenting shares, and a brief description of the procedure to be followed
if the shareholder desires to exercise the shareholder's right under such
sections. The statement of price constitutes an offer by the corporation to
purchase at the price stated any dissenting shares as defined in subdivision (b)
of Section 1300, unless they lose their status as dissenting shares under
Section 1309.
   116

     (b) Any shareholder who has a right to require the corporation to purchase
the shareholder's shares for cash under Section 1300, subject to compliance with
paragraphs (3) and (4) of subdivision (b) thereof, and who desires the
corporation to purchase such shares shall make written demand upon the
corporation for the purchase of such shares and payment to the shareholder in
cash of their fair market value. The demand is not effective for any purpose
unless it is received by the corporation or any transfer agent thereof (1) in
the case of shares described in clause (i) or (ii) of paragraph (1) of
subdivision (b) of Section 1300 (without regard to the provisos in that
paragraph), not later than the date of the shareholders' meeting to vote upon
the reorganization, or (2) in any other case within 30 days after the date on
which the notice of the approval by the outstanding shares pursuant to
subdivision (a) or the notice pursuant to subdivision (i) of Section 1110 was
mailed to the shareholder.

     (c) The demand shall state the number and class of the shares held of
record by the shareholder which the shareholder demands that the corporation
purchase and shall contain a statement of what such shareholder claims to be the
fair market value of those shares as of the day before the announcement of the
proposed reorganization or short-form merger. The statement of fair market value
constitutes an offer by the shareholder to sell the shares at such price.

     1302. Within 30 days after the date on which notice of the approval by the
outstanding shares or the notice pursuant to subdivision (i) of Section 1110 was
mailed to the shareholder, the shareholder shall submit to the corporation at
its principal office or at the office of any transfer agent thereof, (a) if the
shares are certificated securities, the shareholder's certificates representing
any shares which the shareholder demands that the corporation purchase, to be
stamped or endorsed with a statement that the shares are dissenting shares or to
be exchanged for certificates of appropriate denomination so stamped or endorsed
or (b) if the shares are uncertificated securities, written notice of the number
of shares which the shareholder demands that the corporation purchase. Upon
subsequent transfers of the dissenting shares on the books of the corporation,
the new certificates, initial transaction statement, and other written
statements issued therefor shall bear a like statement, together with the name
of the original dissenting holder of the shares.

     1303. (a) If the corporation and the shareholder agree that the shares are
dissenting shares and agree upon the price of the shares, the dissenting
shareholder is entitled to the agreed price with interest thereon at the legal
rate on judgments from the date of the agreement. Any agreements fixing the fair
market value of any dissenting shares as between the corporation and the holders
thereof shall be filed with the secretary of the corporation.

     (b) Subject to the provisions of Section 1306, payment of the fair market
value of dissenting shares shall be made within 30 days after the amount thereof
has been agreed or within 30 days after any statutory or contractual conditions
to the reorganization are satisfied, whichever is later, and in the case of
certificated securities, subject to surrender of the certificates therefor,
unless provided otherwise by agreement.

     1304. (a) If the corporation denies that the shares are dissenting shares,
or the corporation and the shareholder fail to agree upon the fair market value
of the shares, then the shareholder demanding purchase of such shares as
dissenting shares or any interested corporation, within six months after the
date on which notice of the approval by the outstanding shares (Section 152) or
notice pursuant to subdivision (i) of Section 1110 was mailed to the
shareholder, but not thereafter, may file a complaint in the superior court of
the proper county praying the court to determine whether the shares are
dissenting shares or the fair market value of the dissenting shares or both or
may intervene in any action pending on such a complaint.

     (b) Two or more dissenting shareholders may join as plaintiffs or be joined
as defendants in any such action and two or more such actions may be
consolidated.

     (c) On the trial of the action, the court shall determine the issues. If
the status of the shares as dissenting shares is in issue, the court shall first
determine that issue. If the fair market value of the dissenting shares is in
issue, the court shall determine, or shall appoint one or more impartial
appraisers to determine, the fair market value of the shares.

     1305. (a) If the court appoints an appraiser or appraisers, they shall
proceed forthwith to determine the fair market value per share. Within the time
fixed by the court, the appraisers, or a majority of them, shall
                                        2
   117

make and file a report in the office of the clerk of the court. Thereupon, on
the motion of any party, the report shall be submitted to the court and
considered on such evidence as the court considers relevant. If the court finds
the report reasonable, the court may confirm it.

     (b) If a majority of the appraisers appointed fail to make and file a
report within 10 days from the date of their appointment or within such further
time as may be allowed by the court or the report is not confirmed by the court,
the court shall determine the fair market value of the dissenting shares.

     (c) Subject to the provisions of Section 1306, judgment shall be rendered
against the corporation for payment of an amount equal to the fair market value
of each dissenting share multiplied by the number of dissenting shares which any
dissenting shareholder who is a party, or who has intervened, is entitled to
require the corporation to purchase, with interest thereon at the legal rate
from the date on which judgment was entered.

     (d) Any such judgment shall be payable forthwith with respect to
uncertificated securities and, with respect to certificated securities, only
upon the endorsement and delivery to the corporation of the certificates for the
shares described in the judgment. Any party may appeal from the judgment.

     (e) The costs of the action, including reasonable compensation to the
appraisers to be fixed by the court, shall be assessed or apportioned as the
court considers equitable, but, if the appraisal exceeds the price offered by
the corporation, the corporation shall pay the costs (including in the
discretion of the court attorneys' fees, fees of expert witnesses and interest
at the legal rate on judgments from the date of compliance with Sections 1300,
1301 and 1302 if the value awarded by the court for the shares is more than 125
percent of the price offered by the corporation under subdivision (a) of Section
1301).

     1306. To the extent that the provisions of Chapter 5 prevent the payment to
any holders of dissenting shares of their fair market value, they shall become
creditors of the corporation for the amount thereof together with interest at
the legal rate on judgments until the date of payment, but subordinate to all
other creditors in any liquidation proceeding, such debt to be payable when
permissible under the provisions of Chapter 5.

     1307. Cash dividends declared and paid by the corporation upon the
dissenting shares after the date of approval of the reorganization by the
outstanding shares (Section 152) and prior to payment for the shares by the
corporation shall be credited against the total amount to be paid by the
corporation therefor.

     1308. Except as expressly limited in this chapter, holders of dissenting
shares continue to have all the rights and privileges incident to their shares,
until the fair market value of their shares is agreed upon or determined. A
dissenting shareholder may not withdraw a demand for payment unless the
corporation consents thereto.

     1309. Dissenting shares lose their status as dissenting shares and the
holders thereof cease to be dissenting shareholders and cease to be entitled to
require the corporation to purchase their shares upon the happening of any of
the following:

          (a) The corporation abandons the reorganization. Upon abandonment of
     the reorganization, the corporation shall pay on demand to any dissenting
     shareholder who has initiated proceedings in good faith under this chapter
     all necessary expenses incurred in such proceedings and reasonable
     attorneys' fees.

          (b) The shares are transferred prior to their submission for
     endorsement in accordance with Section 1302 or are surrendered for
     conversion into shares of another class in accordance with the articles.

          (c) The dissenting shareholder and the corporation do not agree upon
     the status of the shares as dissenting shares or upon the purchase price of
     the shares, and neither files a complaint or intervenes in a pending action
     as provided in Section 1304, within six months after the date on which
     notice of the approval by the outstanding shares or notice pursuant to
     subdivision (i) of Section 1110 was mailed to the shareholder.

                                        3
   118

          (d) The dissenting shareholder, with the consent of the corporation,
     withdraws the shareholder's demand for purchase of the dissenting shares.

     1310. If litigation is instituted to test the sufficiency or regularity of
the votes of the shareholders in authorizing a reorganization, any proceedings
under Sections 1304 and 1305 shall be suspended until final determination of
such litigation.

     1311. This chapter, except Section 1312, does not apply to classes of
shares whose terms and provisions specifically set forth the amount to be paid
in respect to such shares in the event of a reorganization or merger.

     1312. (a) No shareholder of a corporation who has a right under this
chapter to demand payment of cash for the shares held by the shareholder shall
have any right at law or in equity to attack the validity of the reorganization
or short-form merger, or to have the reorganization or short-form merger set
aside or rescinded, except in an action to test whether the number of shares
required to authorize or approve the reorganization have been legally voted in
favor thereof; but any holder of shares of a class whose terms and provisions
specifically set forth the amount to be paid in respect to them in the event of
a reorganization or short-form merger is entitled to payment in accordance with
those terms and provisions or, if the principal terms of the reorganization are
approved pursuant to subdivision (b) of Section 1202, is entitled to payment in
accordance with the terms and provisions of the approved reorganization.

     (b) If one of the parties to a reorganization or short-form merger is
directly or indirectly controlled by, or under common control with, another
party to the reorganization or short-form merger, subdivision (a) shall not
apply to any shareholder of such party who has not demanded payment of cash for
such shareholder's shares pursuant to this chapter; but if the shareholder
institutes any action to attack the validity of the reorganization or short-form
merger or to have the reorganization or short-form merger set aside or
rescinded, the shareholder shall not thereafter have any right to demand payment
of cash for the shareholder's shares pursuant to this chapter. The court in any
action attacking the validity of the reorganization or short-form merger or to
have the reorganization or short-form merger set aside or rescinded shall not
restrain or enjoin the consummation of the transaction except upon 10 days'
prior notice to the corporation and upon a determination by the court that
clearly no other remedy will adequately protect the complaining shareholder or
the class of shareholders of which such shareholder is a member.

     (c) If one of the parties to a reorganization or short-form merger is
directly or indirectly controlled by, or under common control with, another
party to the reorganization or short-form merger, in any action to attack the
validity of the reorganization or short-form merger or to have the
reorganization or short-form merger set aside or rescinded, (1) a party to a
reorganization or short-form merger which controls another party to the
reorganization or short-form merger shall have the burden of proving that the
transaction is just and reasonable as to the shareholders of the controlled
party, and (2) a person who controls two or more parties to a reorganization
shall have the burden of proving that the transaction is just and reasonable as
to the shareholders of any party so controlled.

                                        4
   119

                                     PROXY

                              SILICON GAMING, INC.

              PROXY SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS

           FOR THE SPECIAL MEETING OF STOCKHOLDERS, FEBRUARY 27, 2001



    KNOW ALL MEN BY THESE PRESENTS that the undersigned, stockholder(s) of
SILICON GAMING, INC., do(es) hereby appoint Andrew S. Pascal and Paul Mathews,
and each of them, proxies, each with full power of substitution, for and in the
name and stead of the undersigned at the Special Meeting of Stockholders of
SILICON GAMING, INC., to be held on February 27, 2001, and at any and all
adjournments thereof, to vote all shares of capital stock held by the
undersigned, with all powers that the undersigned would possess if personally
present, on each of the matters referred to herein.



   THIS PROXY, WHEN PROPERLY EXECUTED, WILL BE VOTED IN THE MANNER DIRECTED BY
THE UNDERSIGNED STOCKHOLDER(S). IF NO DIRECTION IS MADE, THIS PROXY WILL BE
VOTED FOR THE APPROVAL OF THE AGREEMENT AND PLAN OF MERGER. IT WILL ALSO BE
VOTED IN THE DISCRETION OF THE PROXYHOLDERS ON ANY OTHER MATTER OF BUSINESS
PROPERLY COMING BEFORE THE MEETING.



February 3, 2001


Dear Stockholder,


   You are cordially invited to attend the Special Meeting of Stockholders to be
held at 9:00 a.m. on February 27, 2001 at Silicon's principal executive offices
which are located at 2800 W. Bayshore Road, Palo Alto, California 94303.
Detailed information as to the business to be transacted at the meeting is
contained in the accompanying Notice of Special Meeting and Proxy Statement.


   Regardless of whether you plan to attend the meeting, it is important that
your shares be voted. Accordingly, we ask that you sign and return your proxy as
soon as possible in the envelope provided.
                                                Sincerely,

                                                Andrew S. Pascal
                                                Secretary

            (Continued, and to be executed and dated on other side.)
   120

                          (Continued from other side)
[X] PLEASE MARK VOTES AS IN THIS EXAMPLE.

This proxy revokes any and all other proxies heretofore given by the
undersigned.


1. To approve the Agreement and Plan of Merger among Silicon Gaming Inc.,
International Game Technology and International Game Acquisition Corporation.


       [ ] FOR                  [ ] AGAINST                  [ ] ABSTAIN

                                             MARK HERE FOR ADDRESS CHANGE
                                             AND NOTE AT LEFT  [ ]

                                             PLEASE SIGN EXACTLY AS NAME APPEARS
                                             HEREON. When shares are held by
                                             joint tenants, both should sign.
                                             When signing as attorney, executor,
                                             administrator, trustee, guardian or
                                             in a fiduciary capacity, please
                                             give full title as such. If a
                                             corporation, please sign in full
                                             corporate name by President or
                                             authorized person. If a
                                             partnership, please sign in
                                             partnership's name by authorized
                                             person.


                                                          
                                                             Signature:
                                                             --------------------------------------------
                                                             Date ------------------------------------------------
                                                             Signature:
                                                             --------------------------------------------
                                                             Date ------------------------------------------------


  PLEASE PROMPTLY MARK, SIGN, DATE AND RETURN PROXY IN THE ENVELOPE PROVIDED.