ACCOUNT AGREEMENT



          THIS ACCOUNT  AGREEMENT,  dated as of June 3, 1999 (as the same may be
amended,  restated,  supplemented  or otherwise  modified from time to time, the
"Agreement"),  by and among  RIVIERA  BLACK HAWK,  INC., a Colorado  corporation
("Owner"),  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,  and IBJ WHITEHALL BANK & TRUST COMPANY,  a
New York banking  association  (together with its  successors  and assigns,  the
"Company"), upon the following terms and conditions:

                                    RECITALS

          A. Owner  desires that the Company hold certain  financial  assets and
perform certain services as a securities intermediary.

          B. The  Company  is willing  to hold such  assets and to perform  such
services,  subject to the terms and  conditions of this Agreement and the Pledge
Agreement (as hereinafter defined).

          C. Owner and the Trustee  have  heretofore  entered  into that certain
Pledge  and  Assignment  Agreement  of even  date  herewith  (as the same may be
amended,  restated,  supplemented  or otherwise  modified from time to time, the
"Pledge Agreement"), which has in turn been acknowledged by the Company.

          NOW,   THEREFORE,   for  valuable   consideration,   the  receipt  and
sufficiency  of  which is  hereby  acknowledged,  the  parties  hereto  agree as
follows:

          1. Custody of Property. Owner hereby authorizes,  appoints and directs
Company to act as custodian of the financial assets in Account Nos. 630000038.1,
630000038.2,  630000038.3  and  630000038.4  at the  Company  (the  "Accounts"),
subject to the Pledge Agreement.  The Company agrees to maintain the Accounts at
its office in New York,  New York (One State Street,  New York, New York 10004),
hold these assets in the  Accounts  and serve as  custodian  for the Accounts in
accordance with this Agreement and the Pledge Agreement.

          2. Title to Securities. Title to the assets held in the Accounts shall
be held in accordance with the provisions set forth in the Pledge Agreement.

          3. Company's Duties Regarding  Investments.  The Company shall have no
responsibility  for supervision or management of any property at any time in the
Accounts  except as  provided in this  Agreement  or the Pledge  Agreement.  The
Company's  responsibility  with  regard to the sale,  purchase  or  exchange  of
investments  shall be limited to  following  the written  orders of the Trustee,
without the need for further consent by Owner.

          4.  Collection  of Income and  Principal.  The Company  shall  collect
income and  principal  becoming  due on the assets in the  Accounts but shall be
under no responsibility or duty




to undertake  collection  efforts or to instigate  or  participate  in any legal
proceedings or to retain counsel in an effort to accomplish such collection. The
Company  shall  advise  Owner and the Trustee  within a  reasonable  time of any
non-payment of principal or income.  Any income received shall be disposed of as
set forth in the Pledge Agreement.

          5.  Instructions:  Signatures.  Instructions to the Company must be in
writing,  with copies of such  instructions  sent to Owner. All instructions and
directions  for  the  Accounts  must be  signed  by a  person  or  persons  duly
authorized  to sign on behalf of the  Trustee  in such form as the  Company  may
reasonably  require.  Specimen  signatures of all persons to whom  authority has
been delegated  shall be furnished.  The following  employees of the Trustee are
authorized to deliver instructions to the Company hereunder:

Name                     Title

- ----------------         ------------------            ---------------------
                                                       Specimen Signature

- ----------------         ------------------            ---------------------
                                                       Specimen Signature

          6.  Accounting.  The Company shall keep complete and accurate books of
account showing all receipts, disbursements and transactions in the Accounts and
shall prepare and deliver to Owner and the Trustee periodic reports  summarizing
the activity in the  Accounts.  Owner agrees that it retains the  obligation  to
prepare and file all  required  state and federal tax reports and returns and to
pay any taxes related to its ownership of the assets in the Accounts.

          7.  Authority.  Any person  executing this agreement in a fiduciary or
other representative capacity represents that they have full power and authority
to do so and that any applicable or required  court,  partnership,  corporate or
other  authority  has been duly and properly  given and continues as of the date
hereof.

          8. Fees and Costs.  So long as the Company serves as Trustee under the
Indenture,  the  Company  shall  not  receive  additional  compensation  for its
services  hereunder.  Owner  agrees to pay all costs  incurred by the Company in
connection  with the Accounts.  Such costs will be paid by Owner directly to the
Company upon demand.

          9. Applicable Law;  Venue;  Attorneys'  Fees. The internal laws of the
State of New York apply to this Agreement and shall be binding upon the Company,
Owner and the Trustee and their respective  successors and assigns.  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.  In the event of any
dispute  regarding this Agreement,  the parties agree that the prevailing  party
shall be  entitled  to such costs and  attorneys'  fees as the court may adjudge
reasonable.


                 (Authorized Signers page to Account Agreement)

                                       2


          IN WITNESS WHEREOF, the parties hereto have executed this Agreement as
of the date first above written.

                            OWNER:

                            RIVIERA BLACK HAWK, INC.,
                            a Colorado corporation



                            By:_______________________________________
                            Name:_____________________________________
                            Title:____________________________________


                            COMPANY:

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



                            By:_______________________________________
                            Name:_____________________________________
                            Title:____________________________________


                            TRUSTEE:

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



                            By:_______________________________________
                            Name:_____________________________________
                            Title:____________________________________


                      [Signature Page to Account Agreement]