PLEDGE AND ASSIGNMENT AGREEMENT



          THIS PLEDGE AND ASSIGNMENT AGREEMENT, dated as of June 3, 1999 (as the
same may be amended,  restated,  supplemented or otherwise modified from time to
time,  the  "Agreement"),  is made by  RIVIERA  BLACK  HAWK,  INC.,  a  Colorado
corporation, as pledgor ("Pledgor"),  having an office at 444 Main Street, Black
Hawk,Colorado  80422, in favor of IBJ Whitehall Bank & Trust Company, a New York
banking  association,  having an office at One State Street,  New York, New York
10004,  as trustee (in such capacity,  together with its successors and assigns,
the  "Trustee")  pursuant to the Indenture  referred to below,  on behalf of the
Secured Parties (as defined below).

                                    RECITALS

          A. Pledgor and the Trustee are,  contemporaneously  with the execution
and delivery of this Agreement,  entering into (i) that certain  Indenture dated
as of even date herewith (as the same may be amended, restated,  supplemented or
otherwise  modified  from  time to time,  the  "Indenture"),  pursuant  to which
Pledgor  is  issuing  its 13% First  Mortgage  Notes  due 2005  With  Contingent
Interest (such notes,  together with any notes issued in replacement  thereof or
in exchange therefor,  the "Notes"),  in the original aggregate principal amount
of $45,000,000, and (ii) that certain Cash Collateral and Disbursement Agreement
dated as of even date herewith (as amended, restated,  supplemented or otherwise
modified from time to time, the "Disbursement  Agreement") pursuant to which the
net proceeds of the Notes (the  foregoing,  collectively,  the "Note  Proceeds")
will be  administered  and  maintained,  including  the  investment  of  certain
portions of such  proceeds  in  Government  Securities  in  accordance  with the
Indenture.

          B. It is a  condition  precedent  to the  purchase  of the Notes  that
Pledgor  shall have  executed and  delivered  this  Agreement to the Trustee for
itself and the  ratable  benefit of the  holders  from time to time of the Notes
(the "Holders" and, together with the Trustee,  the "Secured Parties") to secure
the payment and performance of the Obligations (as hereinafter defined).

          C. Pledgor is the legal and beneficial owner of the securities  listed
in  Schedule  I  hereto  and  will be the  legal  and  beneficial  owner  of all
securities  purchased by or on behalf of Pledgor from time to time with the Note
Proceeds  and/or other amounts  deposited or accruing in the Pledged  Collateral
Accounts, as defined below (all of the foregoing securities,  collectively,  the
"Securities").

                                    AGREEMENT

          Pledgor and the Trustee agree as follows:

          Section  1.  Definitions.  Capitalized  terms  used and not  otherwise
defined herein shall have the meanings  given in the Indenture.  In addition the
following terms shall have the following meanings when used herein.





          "Account  Agreement" means that certain Account  Agreement dated as of
even date herewith by and among Pledgor,  the Trustee,  and IBJ Whitehall Bank &
Trust Company, as Securities Intermediary.

          "Book-Entry  Securities"  means securities issued by the United States
of  America  or  any  agency  or  instrumentality   thereof  maintained  through
registration  on the books of a Federal  Reserve  Bank  pursuant  to  applicable
Federal book-entry regulations.

          "Governmental  Authority" means any federal,  state,  local or foreign
court, agency,  authority,  board,  bureau,  commission,  department,  office or
instrumentality    of   any   nature   whatsoever   or   any   governmental   or
quasi-governmental  unit, whether now or hereafter in existence,  or any officer
or official thereof.

          "Obligor"  means  any and all  Persons  obligated  to pay  money or to
perform some other act under or in respect of the Pledged Collateral.

          "Person" means any individual, corporation, limited liability company,
partnership,  joint venture,  estate,  association,  joint stock company, trust,
unincorporated   organization,   or   government  or  any  agency  or  political
subdivision  thereof and any fiduciary  acting in such capacity on behalf of any
of the foregoing.

          "Securities Intermediary" means a "securities intermediary" within the
meaning of 31 C.F.R.  Section 357.2 and Section 8-102 of the Uniform  Commercial
Code as in effect in the State of New York.

          "Transaction Documents" means the Indenture, the Notes, the Collateral
Documents and all other documents,  instruments,  financing statements and other
agreements  executed in connection  herewith and therewith from time to time, as
each of the same may be amended, restated, supplemented or modified from time to
time.

          "Unmatured Surviving  Obligation" means, as of any date, an Obligation
(as defined in Section 3 hereof) which is contingent  and  unliquidated  and not
due and owing on such date and which,  pursuant to provisions of any Transaction
Document, survives termination of such Transaction Document and the repayment in
full or defeasance of the Notes.

          Section  2.  Pledge.  As  collateral  security  for  the  payment  and
performance  when due of the  Notes and all other  Obligations,  Pledgor  hereby
pledges,  assigns,  transfers  and  grants  to the  Trustee a  continuing  first
priority  lien on all of the right,  title and  interest  of Pledgor  in, to and
under the following property (collectively, the "Pledged Collateral"):

                    (a) the Securities and the certificates,  if any, evidencing
          the Securities and any interest of Pledgor in the entries on the books
          of any Securities Intermediary pertaining to the Securities;

                    (b) all  Proceeds (as defined  under the Uniform  Commercial
          Code as in effect in any relevant  jurisdiction  (the "Code") or under
          other  relevant law) of the  Securities,  and in any event  including,
          without limitation,  any and all (i) proceeds of any


                                       2




          insurance  (except  payment  made to a Person  which is not a party to
          this Agreement),  indemnity,  warranty or guarantee payable to Pledgor
          from time to time with respect to any of the Securities, (ii) payments
          (in any form  whatsoever) made or due and payable to Pledgor from time
          to  time   in   connection   with   any   requisition,   confiscation,
          condemnation,  seizure  or  forfeiture  of  all  or  any  part  of the
          Securities  by any  Governmental  Authority  (or any person  acting on
          behalf of a Governmental Authority), and (iii) other amounts from time
          to  time  paid or  payable  under  or in  connection  with  any of the
          Securities; and

                    (c) any  and  all (i)  funds  and  assets  now or  hereafter
          deposited in Account Nos.

       630000038.1 (Riviera Black Hawk, Inc. Construction Disbursement Account),
       630000038.2 (Riviera Black Hawk, Inc. Interest Reserve Account),
       630000038.3 (Riviera Black Hawk, Inc. Completion Reserve Account) and
       630000038.4 (Riviera Black Hawk, Inc. Disbursed Funds Account)

         at IBJ Whitehall  Bank & Trust  Company  (each,  a "Pledged  Collateral
         Account"  and,   collectively,   the  "Pledged  Collateral  Accounts"),
         including interest that accrues either before or after the commencement
         of any bankruptcy or insolvency  proceeding by or against Pledgor, (ii)
         present  and  future  accounts,  general  intangibles,  chattel  paper,
         contract  rights,  deposit  accounts,  instruments  and  documents  (as
         defined under the Code as in effect in any relevant  jurisdiction)  now
         or hereafter relating or arising with respect to the Pledged Collateral
         Accounts  and/or the use thereof,  and (iii) cash and noncash  proceeds
         and  products  of the items  described  in  subparagraphs  (i) and (ii)
         above.

          Section  3.  Secured  Obligations.  This  Agreement  secures,  and the
Pledged  Collateral is collateral  security for, the payment and  performance in
full  when due,  whether  at  stated  maturity,  by  acceleration  or  otherwise
(including  without  limitation  the payment of interest and other amounts which
would  accrue and become  due but for the  filing of a  petition  in  bankruptcy
(whether or not a claim is allowed  against  Pledgor for such  interest or other
amounts in any such  bankruptcy  proceeding)  or the  operation of the automatic
stay under Section  362(a) of the Bankruptcy  Code, 11 U.S.C. ss 362(a)), of all
obligations  of  Pledgor  under the  Transaction  Documents  (collectively,  the
"Obligations").

          Section  4. No  Release.  Nothing  set forth in this  Agreement  shall
relieve  Pledgor  from the  performance  of any  term,  covenant,  condition  or
agreement on Pledgor's  part to be performed or observed  under or in respect of
any of the Pledged  Collateral  or from any  liability to any Person under or in
respect of any of the Pledged  Collateral or shall impose any  obligation on the
Trustee  or any  other  Secured  Party to  perform  or  observe  any such  term,
covenant,  condition  or  agreement  on  Pledgor's  part to be so  performed  or
observed or shall impose any  liability on the Trustee or any Secured  Party for
any act or omission on the part of Pledgor relating thereto or for any breach of
any  representation  or  warranty  on the  part  of  Pledgor  contained  in this
Agreement,  under or in respect of the Pledged  Collateral or made in connection
herewith or therewith.  The provisions set forth in this Section 4 shall survive
the  termination  of this  Agreement and the discharge of Pledgor's  obligations
under this Agreement or any other agreement constituting Pledged Collateral.


                                       3



          Section 5. Further  Assurances.  Pledgor  agrees that, at any time and
from time to time,  it will make,  execute,  endorse,  acknowledge  and file and
refile, or permit the Trustee to file and refile,  such lists,  descriptions and
designations of the Pledged Collateral,  copies of documents of title, vouchers,
invoices, schedules, confirmatory assignments,  supplements, additional security
agreements,  conveyances, financing statements, amendments thereto, continuation
statements,  transfer  endorsements,  powers of  attorney  and  other  documents
(including without limitation this Agreement),  in form reasonably  satisfactory
to the Trustee in such offices as the Trustee may deem  reasonably  necessary or
appropriate,  wherever required or permitted by law in order to perfect, protect
and preserve the rights and interests granted to the Trustee hereunder.  Pledgor
hereby  authorizes the Trustee and appoints the Trustee as its  attorney-in-fact
to file such financing statements,  continuation statements,  amendments thereto
and other  documents,  without the  signature  of Pledgor to the fullest  extent
permitted  by  applicable  law,  and Pledgor  agrees to do such further acts and
things,  and to execute and deliver to the Trustee such additional  assignments,
agreements,  powers and  instruments,  as the Trustee may reasonably  require to
carry into  effect the  purposes of this  Agreement,  to preserve or protect the
lien on the  Pledged  Collateral  created  by this  Agreement  or to assure  and
confirm  unto the  Trustee  its  rights,  powers  and  remedies  hereunder.  The
foregoing grant of authority is a power of attorney coupled with an interest and
such appointment shall be irrevocable for the term of this Agreement. All of the
foregoing shall be at the sole cost and expense of Pledgor.

          Section  6.   Representations,   Warranties  and  Covenants.   Pledgor
represents, warrants and covenants as follows:

                    (a)  Delivery;  Perfection.  To the  extent  that any of the
          Pledged Collateral constitutes  certificated  securities,  Pledgor has
          delivered  to the Trustee all  certificates  representing  the Pledged
          Collateral relating to the Securities  identified on Schedule I hereto
          (and  will  immediately   deliver  to  the  Trustee  all  certificates
          representing such Pledged Collateral  acquired after the date hereof),
          accompanied  in each case by undated  bond  powers  duly  executed  in
          blank,  and has caused to be filed with the  Secretary of State of the
          State of Colorado,  the principal place of business of Pledgor,  UCC-1
          financing  statements  evidencing  the lien or pledge  created by this
          Agreement,  and,  together with the book entries  described in Section
          6(h) below and the  execution  and  delivery of this  Agreement,  such
          delivery,   filing,  pledge,  transfer  and  control  of  the  Pledged
          Collateral  pursuant to this  Agreement  creates a valid and perfected
          first priority security interest in the Pledged Collateral pursuant to
          the Code in effect in the State of New York  securing  the payment and
          performance in full of the Obligations.

                    (b) No Liens.  Pledgor is as of the date hereof,  and, as to
          Pledged  Collateral  acquired  by it from time to time  after the date
          hereof,  Pledgor  will be, the owner of all of the Pledged  Collateral
          free and clear of any lien (other than the lien granted to the Trustee
          under this Agreement or any other  Transaction  Document and Permitted
          Liens),  and Pledgor shall defend the Pledged  Collateral  against all
          claims and demands of all Persons at any time  claiming  any  interest
          therein adverse to the Trustee or any Secured Party.


                                       4



                    (c)  Other  Financing  Statements.  There  is  no  financing
          statement (or similar  statement or instrument of  registration  under
          the law of any  jurisdiction)  covering  or  purporting  to cover  any
          interest  of any kind in the  Pledged  Collateral  and, so long as any
          Obligations are outstanding, Pledgor shall not execute or authorize to
          be filed in any public  office any  financing  statement  (or  similar
          statement  or  instrument  of  registration   under  the  law  of  any
          jurisdiction) or statements relating to the Pledged Collateral, except
          financing  statements  filed or to be filed in respect of and covering
          the lien  granted by Pledgor  pursuant to this  Agreement or any other
          Transaction Document.

                    (d) Chief  Executive  Office;  Records.  The chief executive
          office of Pledgor is  located at 2901 Las Vegas  Boulevard,  South Las
          Vegas,  Nevada 89109, and has been located there for at least four (4)
          months preceding the date hereof. In addition,  Pledgor's name has not
          been changed in the four (4) months preceding the date hereof. Pledgor
          shall not establish a new location for such office nor shall it change
          its name  unless  (i) it shall have  given the  Trustee  not less than
          thirty  (30) days' prior  written  notice of its  intention  so to do,
          clearly  describing  such  new  location  or  locations  or  name  and
          providing  such  other  information  in  connection  therewith  as the
          Trustee may  request,  and (ii) with  respect to such new  location or
          name, Pledgor shall have taken all action  satisfactory to the Trustee
          to maintain the  perfection,  priority and validity of the lien of the
          Trustee  in the  Pledged  Collateral  intended  to be  granted by this
          Agreement.

                    (e)  Authorization  Enforceability.  Pledgor has full power,
          authority  and legal right to enter into this  Agreement and to pledge
          and grant a lien on all the Pledged Collateral owned by it pursuant to
          this Agreement, and this Agreement has been duly authorized,  executed
          and delivered by Pledgor and constitutes the legal,  valid and binding
          obligation of Pledgor,  enforceable against Pledgor in accordance with
          its terms, except as such enforceability may be limited by bankruptcy,
          insolvency, reorganization, moratorium or other similar laws affecting
          credits' rights generally and by general principles of equity.

                    (f) No Consents, Etc. No authorization,  consent,  approval,
          license,  qualification  or formal  exemption  from,  nor any  filing,
          declaration or registration  with, any court,  governmental  agency or
          regulatory  authority,  or with any  securities  exchange or any other
          Person, is required in connection with (i) the due execution, delivery
          or performance by Pledgor of this  Agreement,  (ii) the assignment of,
          and the  grant of a lien on  (including  the  priority  thereof),  the
          Pledged  Collateral  by  Pledgor  in the  manner  and for the  purpose
          contemplated  by this  Agreement,  or (iii) the exercise of the rights
          and  remedies of the Trustee  created  hereby,  except those that have
          been obtained or made  concurrently  with the execution hereof or that
          shall  be  obtained  or made at the  time  new  collateral  is  added,
          including without limitation filings in the appropriate  offices under
          the Code and the execution and delivery of the Account Agreement.

                    (g) No Breach.  None of the  execution  and delivery of this
          Agreement, the consummation of the transactions herein contemplated or
          compliance with the terms and provisions  hereof will conflict with or
          result in a breach of (i) any applicable  law or regulation,  (ii) any
          order,  writ,  injunction  or  decree  of any  court  or  governmental
          authority  or  agency,  (iii) any  agreement  or  instrument  to which
          Pledgor  is a  party  or by  which


                                       5



          Pledgor or any of the Pledged  Collateral is bound or to which Pledgor
          is subject,  or (iv) result in the creation or  imposition of any Lien
          upon  Pledgor's  earnings or assets  pursuant to the terms of any such
          agreement or instrument.

                    (h)  Book-Entry  Securities.  With respect to the Book-Entry
          Securities   identified  in  Schedule  I  hereto  and  the  Book-Entry
          Securities  acquired by or on behalf of Pledgor from time to time with
          the Note Proceeds  and/or other  amounts  deposited or accruing in the
          Pledged  Collateral  Accounts,  Pledgor shall  promptly cause (i) such
          Book-Entry  Securities  to be credited to a Securities  Intermediary's
          trust/custody  account maintained at the Federal Reserve Bank at which
          such  Securities  Intermediary  maintains a  Participant's  Securities
          Account  (as such term is  defined  in 31 C.F.R.  ss 357.2) (and to be
          identified  on the records of such Federal  Reserve Bank as being held
          for the sole and exclusive  account of such Securities  Intermediary),
          (ii)  such  Securities  Intermediary  to  credit  by  book-entry  such
          Book-Entry Securities as being held for the account of the Trustee and
          for the benefit of the Trustee, and (iii) such Securities Intermediary
          to  send  a   confirmation   to  the  Trustee  that  such   Securities
          Intermediary is holding such Book-Entry  Securities for the account of
          the Trustee and for the benefit of the  Trustee.  With  respect to the
          Pledged  Collateral,  Pledgor and the Trustee hereby  acknowledge  and
          agree  that  IBJ  Whitehall  Bank  &  Trust  Company  ("IBJ")  is  the
          Securities  Intermediary  at which  the  securities  accounts  for the
          Pledged  Collateral is  maintained,  and IBJ hereby agrees to maintain
          each of the  Pledge  Collateral  Accounts  as a  "securities  account"
          within the  meaning of Article 8 of the Code in effect in the state of
          New  York.  IBJ  hereby  acknowledges  that  (i) it has by  book-entry
          credited the  Book-Entry  Securities to the Trustee and the Trustee is
          the  entitlement  holder  with  respect to the  security  entitlements
          therein,  (ii) it shall, as Securities  Intermediary,  comply with all
          written  entitlement orders originated by the Trustee without the need
          for  further  consent by  Pledgor,  and (iii) the  Trustee  shall have
          control over the Book-Entry  Securities and the security  entitlements
          and securities accounts relating thereto.

                    (i) Pledged  Collateral.  All  information  set forth herein
          (including the exhibits hereto) relating to the Pledged  Collateral is
          accurate and complete in all material respects.

          Section 7. Provisions Concerning the Pledged Collateral.

                    (a) Protection of the Trustee's Security.  Pledgor shall not
          take any action that  impairs the rights of the Trustee in the Pledged
          Collateral.

                    (b)  Payments.  So long as no Event of  Default  shall  have
          occurred and be continuing, all distributions,  cash, interest, return
          of capital or other payments made in respect of the Pledged Collateral
          shall be deposited in the applicable  Pledged  Collateral  Account and
          utilized in  accordance  with the  provisions of the Indenture and the
          Disbursement  Agreement  (which  utilization  shall  include,  without
          limitation,  the payment of any installment due under the Notes). Upon
          the occurrence and during the continuation of an Event of Default, all
          rights to enforce  and  collect  payments  in  respect of the  Pledged
          Collateral  or to direct the  disposition  thereof  shall be exercised
          exclusively by the Trustee


                                       6



          and the  proceeds of any such  exercise  shall be applied to Pledgor's
          obligations under and in accordance with the Transaction Documents.

          Section 8.  Transfers  and Other  Liens.  Pledgor  shall not (i) sell,
convey,  assign or otherwise  dispose of, or grant any option,  right or warrant
with respect to, any of the Pledged  Collateral  except as  permitted  under the
Indenture,  the  Disbursement  Agreement and this  Agreement,  or (ii) create or
permit to exist any Lien upon or with respect to any Pledged Collateral,  except
for the lien of this Agreement and the other Transaction Documents.

          Section 9.  Remedies Upon  Default;  Obtaining the Pledged  Collateral
Upon Event of Default.

                    (a) If an  Event  of  Default  shall  have  occurred  and be
          continuing, then and in every such case, the Trustee may:

                              (i)  instruct  the  obligor  or  obligors  on  any
                    agreement,   instrument  or  other  obligation  constituting
                    Pledged Collateral to make any payment required by the terms
                    of such  instrument or agreement  directly to or as directed
                    by the Trustee;  provided,  however,  that in the event that
                    any such  payments  are made  directly  to Pledgor  prior to
                    receipt  by  any  such  obligor  of  such   instruction   or
                    notwithstanding  such  instruction,  Pledgor shall hold such
                    amounts as agent and trustee for the Trustee,  segregate all
                    amounts received  pursuant thereto in a separate account and
                    pay such amounts  promptly to or as directed by the Trustee;
                    and

                              (ii)  proceed to exercise  all rights,  privileges
                    and remedies of Pledgor  under the Pledged  Collateral,  and
                    may exercise such rights and remedies  either in the name of
                    the  Trustee  or in the  name  of  Pledgor  for  the use and
                    benefit of the Trustee to the fullest  extent  permitted  by
                    applicable law.

                    (b) Upon the  occurrence  and during the  continuance  of an
          Event of  Default,  the  Trustee  may from  time to time  exercise  in
          respect of the Pledged Collateral, in addition to the other rights and
          remedies provided herein or otherwise  available to it, all the rights
          and  remedies of a secured  party under the Code.  The proceeds of the
          exercise by the Trustee of any remedy  hereunder  shall be paid to and
          applied as follows:

                              FIRST:  to the  payment  of  reasonable  costs and
                    expenses  of  any  suit  and  of  all  proper  compensation,
                    expenses,   liabilities  and  advances,   including  without
                    limitation  reasonable  legal expenses and attorneys'  fees,
                    owed to,  incurred  or made by the  Trustee  and all  taxes,
                    assessments or liens superior to the lien hereof,

                              SECOND:  to the  payment  of all  amounts  due and
                    owing under the  Transaction  Documents  (including  without
                    limitation the Notes) and all other Obligations; and


                                       7



                              THIRD:  the balance,  if any, to Pledgor or to the
                    Person lawfully entitled thereto as determined by a court of
                    competent jurisdiction.

                    (c) Upon the  occurrence  and during the  continuance  of an
          Event of Default,  the Trustee may, upon ten (10) business days' prior
          written  notice to Pledgor of the time and place,  with respect to the
          Pledged  Collateral  or any part  thereof  that shall then be or shall
          thereafter come into the possession, custody or control of the Trustee
          or any of its agents,  sell, lease, assign or otherwise dispose of all
          or any part of the Pledged Collateral,  at such place or places as the
          Trustee deems best, and for cash or for credit or for future delivery,
          at public or private sale,  without demand of performance or notice of
          intention  to  effect  any  such  disposition  or of the time or place
          thereof  (except  such  notice as is required  above or by  applicable
          statute and cannot be  waived),  and the Trustee or anyone else may be
          the  purchaser,  lessee,  assignee or  recipient  of any or all of the
          Pledged  Collateral  so  disposed  of at any public  sale (or,  to the
          extent  permitted by law, at any private sale) and thereafter hold the
          same  absolutely,  free  from any claim or right of  whatsoever  kind,
          including any right or equity of redemption  (statutory or otherwise),
          of Pledgor,  any such demand,  notice (other than the notice specified
          above) and right or equity being hereby expressly waived and released.
          The Trustee may, without notice or publication,  adjourn any public or
          private  sale or cause the same to be  adjourned  from time to time by
          announcement  at the time and place fixed for the sale,  and such sale
          may be  made  at any  time  or  place  to  which  the  sale  may be so
          adjourned.  Notwithstanding the first sentence of this Section 9(c) to
          the contrary,  with respect to that portion of the Pledged  Collateral
          consisting of Book-Entry Securities, the parties acknowledge and agree
          that such  Pledged  Collateral  is sold on a  recognized  market  and,
          accordingly,  the Trustee need not furnish  Pledgor with notice of its
          intention  to sell  such  Pledged  Collateral.  The  proceeds  of each
          collection, sale or other disposition under this Section 9(c) shall be
          applied in accordance with Section 9(b) hereof.

                    (d) Private Sale.  The Trustee shall incur no liability as a
          result of the sale of the Pledged Collateral,  or any part thereof, at
          any private  sale  pursuant  to Section  9(c)  hereof  conducted  in a
          commercially  reasonably  manner.  Pledgor  hereby  waives  any claims
          against  the  Trustee  arising by reason of the fact that the price at
          which the Pledged  Collateral  may have been sold at such private sale
          was less than the price that might have been obtained at a public sale
          or was less  than the  aggregate  amount  owed by  Pledgor  under  the
          Transaction  Documents,  even if the Trustee accepts,  the first offer
          received  and does not offer the Pledged  Collateral  to more than one
          offeree.

          Section 10. No Waiver; Cumulative Remedies.

                    (a) No failure on the part of the  Trustee to  exercise,  no
          course of  dealing  with  respect  to, and no delay on the part of the
          Trustee in  exercising,  any right,  power or remedy  hereunder  shall
          operate as a waiver thereof. No single or partial exercise of any such
          right,  power or remedy  hereunder shall preclude any other or further
          exercise thereof or the exercise of any other right,  power or remedy.
          The remedies  provided herein and in the other  Transaction  Documents
          are cumulative and are not exclusive of any remedies provided by law.


                                       8



                    (b) In the event  the  Trustee  shall  have  instituted  any
          proceeding to enforce any right, power or remedy under this Agreement,
          and such proceeding shall have been  discontinued or abandoned for any
          reason or shall have been determined  adversely to the Trustee,  then,
          and in every such case,  Pledgor,  the Trustee and each obligor  under
          the Notes shall be restored to their  respective  former positions and
          rights  hereunder  with  respect to the  Pledged  Collateral,  and all
          rights,  remedies  and powers of the Trustee  shall  continue as if no
          such proceeding had been instituted.

          Section   11.  The  Trustee  May   Perform;   the  Trustee   Appointed
Attorney-In-Fact. If Pledgor fails to do any act or thing that it has covenanted
to do hereunder or if any warranty on the part of Pledgor contained herein shall
be  breached,  the Trustee may (but shall not be obligated  to),  upon notice to
Pledgor specifying the action to be taken, do the same or cause it to be done or
remedy any such  breach,  and may  expend  funds for such  purpose.  Any and all
amounts so expended by the Trustee  (including,  but not limited to,  reasonable
legal expenses and disbursements)  shall be paid by Pledgor promptly upon demand
therefor,  with  interest at the Default Rate during the period from the date on
which  such  payment is made to and  including  the date of  repayment.  Pledgor
hereby  authorizes  the Trustee and appoints  the Trustee its  attorney-in-fact,
with  full  authority  in the  place  and  stead of  Pledgor  and in the name of
Pledgor, or otherwise,  from time to time in the Trustee's reasonable discretion
to take any action and to execute  any  instrument  which is  consistent  and in
accordance  with the terms of this Agreement and the  Transaction  Documents and
which the Trustee may deem  reasonably  necessary or advisable to accomplish the
purposes of this  Agreement.  The  foregoing  grant of  authority  is a power of
attorney coupled with an interest and such appointment  shall be irrevocable for
the term of this  Agreement.  Pledgor  hereby  ratifies  all  actions  that such
attorney  shall  lawfully  take or cause to be taken  in  accordance  with  this
Section 11.

         Section 12. Modification in Writing. This Agreement, and any provisions
hereof, may not be modified,  amended, waived, extended,  changed, discharged or
terminated  orally or by an act or  failure to act on the part of  Pledgor,  but
only by an  agreement  in writing  and  signed by the  Trustee.  Any  amendment,
modification or supplement of or to any provision of this Agreement,  any waiver
of any provision of this Agreement,  and any consent to any departure by Pledgor
from the terms of any provision of this Agreement shall be effective only in the
specific  instance and for the specific purpose for which made or given.  Except
where notice is specifically required by this Agreement,  no notice to or demand
on Pledgor in any case shall entitle  Pledgor to any other or further  notice or
demand in similar or other circumstances.

          Section 13.  Termination;  Release.  When all  Obligations  of Pledgor
(other than any Unmatured Surviving Obligations) under the Transaction Documents
have been released or performed in full,  this Agreement shall  terminate.  Upon
termination  of this  Agreement,  the Trustee  shall upon the request and at the
sole cost and expense of Pledgor  forthwith  assign,  transfer and deliver,  and
shall direct IBJ, as Securities  Intermediary,  to assign, transfer and deliver,
to Pledgor  against  receipt  and  without  express or  implied  recourse  to or
warranty by the Trustee, such of the Pledged Collateral to be released as may be
in possession of the Trustee or IBJ (as  applicable)  and as shall not have been
sold or otherwise applied pursuant to the terms hereof,  and proper  instruments
(including Code termination  statements)  acknowledging  the termination of this
Agreement and the release of such Pledged Collateral, as the case may be.


                                       9



         Section  14.  Notices.  All  notices,   requests,   demands  and  other
communication  shall be given in the manner set forth in Section  [13.02] of the
Indenture and shall be given or delivered at the following  respective addresses
and  facsimile  and  telephone  numbers and to the  attention  of the  following
individuals or departments: (i) if to Pledgor, at its address specified pursuant
to the Indenture;  (ii) if to the Trustee,  at its address specified pursuant to
the Indenture; (iii) if to the Securities Intermediary, at its address specified
on the  signature  page  hereto;  and (iv) as to any such  party,  at such other
address,  facsimile  or  telephone  number,  or to the  attention  of such other
individual or department,  as the party to which such  information  pertains may
hereafter  specify  for  the  purpose  in a  notice  to the  other  specifically
captioned "Notice of Change of Address."

         Section 15. Continuing  Security Interest;  Assignment.  This Agreement
shall create a continuing  security interest in the Pledged Collateral and shall
(i) be binding upon  Pledgor and each of its  successors  and assigns,  and (ii)
inure to the benefit of the  Trustee and its  successors  and  assigns.  Without
limiting the generality of the foregoing  clause (ii), the Trustee may assign or
otherwise  transfer any  indebtedness  or obligations  held by it and secured by
this Agreement to any other Person in accordance  with the  Indenture,  and such
other  Person  shall  thereupon  become  vested with all the benefits in respect
thereof granted to the Trustee, herein or otherwise.  Pledgor may not assign any
of its rights  under this  Agreement  without the prior  written  consent of the
Trustee,  which  consent may be granted or withheld  in the  Trustee's  sole and
absolute  discretion,  and any attempted assignment in violation of this Section
15 shall be null and void.

          Section 16.  GOVERNING LAW;  TERMS.  THIS AGREEMENT AND THE RIGHTS AND
OBLIGATIONS OF THE PARTIES  HEREUNDER  SHALL IN ALL RESPECTS BE GOVERNED BY, AND
CONSTRUED  AND ENFORCED IN  ACCORDANCE  WITH,  THE LAWS OF THE STATE OF NEW YORK
(WITHOUT GIVING EFFECT TO CALIFORNIA'S PRINCIPLES OF CONFLICTS OF LAW), AND EACH
OF THE PARTIES  HERETO,  TOGETHER WITH THE  SECURITIES  INTERMEDIARY,  EXPRESSLY
AGREES THAT FOR PURPOSES OF SECTION  8-110 OF THE CODE IN EFFECT IN THE STATE OF
NEW YORK, THE SECURITIES  INTERMEDIARY'S  JURISDICTION  IS NEW YORK. THE PARTIES
HERETO  IRREVOCABLY  SUBMIT TO THE  NON-EXCLUSIVE  JURISDICTION  OF ANY STATE OR
FEDERAL  COURT  SITTING  IN THE  CITY OF NEW  YORK  OVER  ANY  SUIT,  ACTION  OR
PROCEEDING ARISING OUT OF OR RELATING TO THIS AGREEMENT.

          Section  17.  Severability  of  Provisions.   Any  provision  of  this
Agreement which is prohibited or unenforceable in any jurisdiction  shall, as to
such  jurisdiction,  be  ineffective  to  the  extent  of  such  prohibition  or
unenforceability   without  invalidating  the  remaining  provisions  hereof  or
affecting  the  validity  or  enforceability  of  such  provision  in any  other
jurisdiction.

          Section  18.  Execution  in  Counterparts.   This  Agreement  and  any
amendments,  waivers,  consents  or  supplements  hereto may be  executed in any
number of counterparts and by different parties hereto in separate counterparts,
each of which when so executed and delivered  shall be deemed to be an original,
but all such counterparts shall constitute one and the same Agreement.

          Section 19. Headings.  The Section headings used in this Agreement are
for convenience of reference only and shall not affect the  construction of this
Agreement.


                                       10



          Section 20.  Entire  Agreement.  This  Agreement,  together with those
other  agreements  referenced  herein,  constitutes  the  entire  agreement  and
understanding  of the parties hereto with respect to the matters and transaction
contemplated  hereby and  supersedes  all prior  agreements  and  understandings
whatsoever relating to such matters and transactions.

         Section 21. Limitation on Duty of the Trustee in Respect of Collateral.
Beyond the exercise of reasonable care in the custody thereof, the Trustee shall
have no duty as to any Pledged Collateral in its possession or control or in the
possession or control of any agent or bailee or any income  thereon or as to the
preservation  of rights  against  prior  parties or any other rights  pertaining
thereto.  The Trustee shall be deemed to have exercised  reasonable  care in the
custody and  preservation  of the Pledged  Collateral in its  possession if such
Pledged Collateral is accorded treatment  substantially  equal to that which the
Trustee accords its own property, and shall not be liable or responsible for any
loss or damage to any of the Pledged  Collateral,  or for any  diminution in the
value thereof,  by reason of the act or omission of any agent or bailee selected
by the Trustee in good faith.

         Section 22.  Indemnification.  Pledgor  agrees to indemnify the Trustee
and hold the Trustee harmless from and against any and all liabilities,  losses,
damages, costs and expenses of any kind or nature whatsoever,  including without
limitation  the  reasonable  fees and  disbursements  of  counsel,  which may be
incurred  by  the  Trustee  in  connection  with  its  actions  hereunder  or in
connection  with  any  investigative,   administrative  or  judicial  proceeding
(whether or not the Trustee shall be designated a party thereto)  relating to or
arising out of this  Agreement  or the  Pledged  Collateral  (including  without
limitation  any such  proceeding  by Pledgor  against the Trustee or the Trustee
against  Pledgor);  provided  that the  Trustee  shall  not have the right to be
indemnified  hereunder  for its own gross  negligence  or willful  misconduct as
determined by a court of competent jurisdiction.

                            [Signature Page Follows]



                                       11



          IN  WITNESS  WHEREOF,  each of the  parties  hereto  has  caused  this
Agreement to be executed and delivered by its duly authorized  officer as of the
date first above written.

                                  PLEDGOR:

                                  RIVIERA BLACK HAWK, INC.,
                                  a Colorado corporation


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


                                  THE TRUSTEE:

                                  IBJ WHITEHALL BANK & TRUST COMPANY,
                                  a New York banking association


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


IBJ  Whitehall  Bank & Trust  Company,  acting  in its  capacity  as  Securities
Intermediary,  hereby  acknowledges  its agreement to be bound by the provisions
set forth in Sections 6(h) and 16 of this Agreement.

IBJ WHITEHALL BANK & TRUST COMPANY,
a New York banking association


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

One State Street, 10th Floor
New York, New York  10004
Attention:  Thomas S. Moser
Facsimile:  (212) 858-2956



               [Signature page to Pledge and Assignment Agreement]