ALLIANCE GAMING CORPORATION
                           OFFER FOR ALL OUTSTANDING
              7 1/2% CONVERTIBLE SUBORDINATED DEBENTURES DUE 2003
                                IN EXCHANGE FOR
           7 1/2% SENIOR CONVERTIBLE SUBORDINATED DEBENTURES DUE 2003
                                CUSIP NO. 01859P
 
 THE EXCHANGE OFFER WILL EXPIRE AT 12:00 MIDNIGHT, NEW YORK CITY TIME, ON JUNE
  , 1996, UNLESS EXTENDED (THE "EXPIRATION DATE"). TENDERS OF 7 1/2% CONVERTIBLE
   SUBORDINATED DEBENTURES DUE 2003 MAY BE WITHDRAWN AT ANY TIME PRIOR TO THE
                                EXPIRATION DATE.
 
                                  May   , 1996
 
TO BROKERS, DEALERS, COMMERCIAL BANKS,
TRUST COMPANIES AND OTHER NOMINEES:
 
    We  are enclosing herewith  the material listed below  relating to the offer
(the "Exchange Offer") by Alliance  Gaming Corporation ("Alliance") to  exchange
up  to  $85 million  principal amount  of Alliance's  7 1/2%  Convertible Senior
Subordinated Debentures due 2003 (the  "New Convertible Debentures") for a  like
principal  amount of Alliance's  7 1/2% Convertible  Subordinated Debentures due
2003 (the "Securities"). Consummation of the Exchange Offer is subject to, among
other things,  satisfaction  of  the  conditions set  forth  in  the  Prospectus
referred  to below under  the heading "The  Exchange Offer --  Conditions to the
Exchange Offer".
 
    We are  asking you  to contact  your clients  for whom  you hold  Securities
registered  in your  name or in  the name of  your nominee. In  addition, we are
asking you  to contact  your clients  who, to  your knowledge,  hold  Securities
registered in their own name.
 
    Enclosed for your information and use are copies of the following documents:
 
        1.  Alliance's Prospectus dated May   , 1996 (as the same may be further
    amended or supplemented from time to time, the "Prospectus");
 
        2.   A BLUE Letter of Transmittal (the "Letter of Transmittal") for your
    use in connection with the tender  of Securities and for the information  of
    your clients;
 
        3.   A YELLOW form of letter that  may be sent to your clients for whose
    accounts you hold  Securities registered in  your name or  the name of  your
    nominee,  with space provided  for obtaining the  clients' instructions with
    regard to the Exchange Offer;
 
        4.  A GREEN form of Notice of Guaranteed Delivery;
 
        5.  Guidelines  for Certification of  Taxpayer Identification Number  on
    Substitute Form W-9; and
 
        6.  A return envelope addressed to the Exchange Agent.
 
    WE  URGE YOU TO  CONTACT YOUR CLIENTS  AS PROMPTLY AS  POSSIBLE. PLEASE NOTE
THAT THE EXCHANGE OFFER WILL  EXPIRE AT 12:00 MIDNIGHT,  NEW YORK CITY TIME,  ON
JUNE    ,  1996, UNLESS EXTENDED.  SECURITIES TENDERED PURSUANT  TO THE EXCHANGE
OFFER MAY BE WITHDRAWN, SUBJECT TO  THE PROCEDURES DESCRIBED IN THE  PROSPECTUS,
AT ANY TIME PRIOR TO THE EXPIRATION DATE.
 
    In  all cases,  New Convertible  Debentures will  be issued  in exchange for
Securities accepted  for exchange  pursuant  to the  Exchange Offer  only  after
timely receipt by the Exchange Agent of such Securities

(or  confirmation of  book-entry transfer of  such Securities  into the Exchange
Agent's account at the  Depositary Trust Company), a  Letter of Transmittal  (or
facsimile  thereof),  properly completed  and  validly executed,  and  any other
required documents.
 
    If holders of Securities wish to tender, but it is impracticable for them to
forward their Securities  or other  required documents prior  to the  Expiration
Date,  a tender may be effected  by following the guaranteed delivery procedures
described in the Prospectus under the heading "The Exchange Offer --  Procedures
for Tendering -- Guaranteed Delivery".
 
    Procedures  for tendering Securities  are set forth  in the Prospectus under
the caption  "The  Exchange  Offer  -- Procedures  for  Tendering".  Holders  of
Securities  who wish to  tender their Securities  must use either  the Letter of
Transmittal or  a  facsimile thereof  or  such Securities  must  be  transferred
pursuant  to the procedures for book-entry  transfer set forth in the Prospectus
under the heading "The Exchange Offer -- Procedures for Tendering --  Book-Entry
Transfer".  In addition, holders of Securities  who are following the procedures
for guaranteed  delivery set  forth in  the Prospectus  must use  the Notice  of
Guaranteed Delivery distributed with the Prospectus.
 
    Alliance will not pay any fees or commissions to any broker, dealer or other
person  in connection with the solicitation of tenders of Securities pursuant to
the Prospectus. However, Alliance will  reimburse you for customary mailing  and
handling expenses incurred by you in forwarding any of the enclosed materials to
your  clients. Alliance will pay or cause  to be paid any transfer taxes payable
with respect to the transfer of  Securities to it, except as otherwise  provided
in Instruction 6 of the Letter of Transmittal.
 
    Any  inquiries you  may have  with respect to  the Exchange  Offer should be
addressed to, and additional  copies of the enclosed  materials may be  obtained
from  Georgeson  & Company,  Inc.,  the Information  Agent,  at its  address and
telephone number set forth on the back cover page of the Prospectus.
 
                                          Very truly yours,
                                          DEUTSCHE MORGAN GRENFELL
                                          JEFFERIES & COMPANY, INC.
                                          LADENBURG, THALMANN & CO., INC.
 
    NOTHING CONTAINED HEREIN OR IN  THE ENCLOSED DOCUMENTS SHALL CONSTITUTE  YOU
OR  ANY OTHER PERSON THE AGENT OF ALLIANCE, THE DEALER MANAGERS, THE INFORMATION
AGENT OR THE EXCHANGE AGENT, OR ANY  AFFILIATE OF ANY OF THEM, OR AUTHORIZE  YOU
OR  ANY OTHER PERSON TO USE  ANY DOCUMENT OR TO MAKE  ANY STATEMENT ON BEHALF OF
ANY OF  THEM IN  CONNECTION WITH  THE  EXCHANGE OFFER  OTHER THAN  THE  ENCLOSED
DOCUMENTS AND THE STATEMENTS CONTAINED THEREIN.