COLLATERAL ASSIGNMENT OF TRADEMARK


          WHEREAS,  RIVIERA BLACK HAWK, INC., a Colorado corporation ("Grantor")
and IBJ Whitehall Bank & Trust Company, a New York banking  association,  having
an office at One State Street,  10th Floor, New York, New York 10004, as trustee
(in such capacity, together with its successors and assigns, the "Trustee"), are
entering into that certain Indenture dated as of even date herewith (as amended,
supplemented or otherwise modified from time to time, the "Indenture"), pursuant
to which  Grantor  shall  issue  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  "Securities"),  in the original aggregate
principal amount of $45,000,000;

          WHEREAS,  pursuant to the terms of the Security  Agreement dated as of
even date herewith (as amended,  supplemented or otherwise modified from time to
time, the "Security Agreement"; capitalized terms used and not otherwise defined
herein have the meanings given in the Security  Agreement),  between Grantor and
the Trustee (in such capacity,  "Grantee"),  Grantor has assigned and granted to
Grantee for Grantee's  benefit and the ratable  benefit of the holders from time
to time of the Securities (the "Holders") a security  interest in  substantially
all the assets of Grantor,  including  without  limitation all right,  title and
interest  of  Grantor  in, to and under  all now  owned and  hereafter  acquired
Trademarks,  Trademark  registrations,   Trademark  applications  and  Trademark
Licenses,  together  with the goodwill of the business  symbolized  by Grantor's
Trademarks,  and all proceeds thereof, to secure the payment of the Obligations;
and

          WHEREAS,  Grantor owns the  Trademarks,  Trademark  registrations  and
Trademark applications, and is a party to the Trademark Licenses, listed for the
Grantor on Schedule 1 annexed hereto;

          NOW, THEREFORE,  for good and valuable consideration,  the receipt and
sufficiency of which are hereby acknowledged, Grantor hereby assigns and conveys
to Grantee a a continuing security interest in all of Grantor's its right, title
and interest in and to the  following  (all of the  following  items or types of
property being herein collectively  referred to as the "Trademark  Collateral"),
whether presently existing or hereafter created or acquired:

          1.   (a) all  registered  and  unregistered  trademarks,  trade names,
               corporate  names,  company  names,  business  names,   fictitious
               business names, trade styles,  service marks, logos,  slogans and
               other source or business  identifiers,  and the related  goodwill
               throughout   the  world  and   general   intangibles   associated
               therewith,  all  registrations  and recordings  thereof,  and all
               applications  in  connection  therewith,  whether  in the  United
               States  Patent and Trademark  Office or in any similar  office or
               agency  of the  United  States,  any State  thereof  or any other
               country  or any  political  subdivision  thereof,  or  otherwise,
               including  without  limitation  those  set  forth on  Schedule  1
               hereto, and (b) all renewals thereof;




          2.   any and all agreements,  written or oral, providing for the grant
               by or to the Grantor of any right to use any Trademark, including
               without  limitation  those set forth on  Schedule  1 hereto,  but
               excluding  any such  agreement  that  prohibits the granting of a
               security  interest  therein,  provided that the Grantor shall use
               its best efforts to obtain  consent to the assignment of any such
               agreement; and

          3.   all  products and proceeds of the  foregoing,  including  without
               limitation  any claim by the Grantor  against  third  parties for
               past,  present  or future (a)  infringement  or  dilution  of any
               Trademark or Trademark  registration including without limitation
               the  Trademarks  and  Trademark   registrations  referred  to  in
               Schedule  1  hereto,  the  Trademark  registrations  issued  with
               respect to the trademark  applications  referred to in Schedule 1
               hereto, and the Trademarks  licensed under each Trademark License
               referred  to in  Schedule 1 hereto  (subject to the terms of such
               Trademark License), or (b) injury to the goodwill associated with
               any Trademark, Trademark registration or Trademark licensed under
               any Trademark License.

          Grantee hereby accepts and receives a continuing  security interest in
all of Grantor's right,  title and interest in and to the Trademark  Collateral.
The rights assigned and conveyed hereby shall include,  but shall not be limited
to, all rights to use, copy, modify and exploit Trademark Collateral;  the right
to exclude others from using Trademark Collateral; the right to license, assign,
convey,  and pledge Trademark  Collateral to others; the right to sue others and
to collect  damages for past,  present  and future  infringements  of  Trademark
Collateral;  the right to create  derivatives  of  Trademark  Collateral  and to
retain full ownership of such  derivatives;  and the right to file and prosecute
applications to protect trademark rights in Trademark Collateral.

          This  assignment  and  grant  of  security   interest  is  granted  in
conjunction  with the  security  interests  granted to Grantee  pursuant  to the
Security Agreement.  Grantor hereby acknowledges and affirms that the rights and
remedies of Grantee with respect to the assignment and security  interest in the
Trademark  Collateral  made and  granted  hereby are more fully set forth in the
Security  Agreement,  the terms and  provisions  of which  are  incorporated  by
reference herein as if fully set forth herein.



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                                       2


          IN WITNESS WHEREOF,  Grantor has caused this Collateral  Assignment of
Trademark to be duly executed as of the 3rd day of June, 1999.


                                       RIVIERA BLACK HAWK, INC.,
                                       a Colorado corporation




                                       By:_____________________________________
                                       Name:___________________________________
                                       Title:__________________________________



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



                                       By:_____________________________________
                                       Name:___________________________________
                                       Title:__________________________________


             [Signature Page to Collateral Assignment of Trademark]



                                 ACKNOWLEDGMENT

State of ____________________
County of ___________________


          On __________,  before me,  ____________,  Notary  Public,  personally
appeared  ___________________,  personally  known to me (or  proved to me on the
basis  of  satisfactory  evidence)  to be the  person(s)  whose  name(s)  is/are
subscribed to the within  instrument  and  acknowledged  to me that  he/she/they
executed  the  same  in  his/her/their  authorized  capacity(ies),  and  that by
his/her/their  signature(s)  on the  instrument the person(s) or the entity upon
behalf of which the person(s) acted, executed the instrument.

          WITNESS my hand and official seal.

Signature __________________ (Seal)





                                 ACKNOWLEDGMENT

State of _____________________
County of ____________________


          On __________,  before me,  ____________,  Notary  Public,  personally
appeared __________________________,  personally known to me (or proved to me on
the basis of  satisfactory  evidence) to be the person(s)  whose name(s)  is/are
subscribed to the within  instrument  and  acknowledged  to me that  he/she/they
executed  the  same  in  his/her/their  authorized  capacity(ies),  and  that by
his/her/their  signature(s)  on the  instrument the person(s) or the entity upon
behalf of which the person(s) acted, executed the instrument.

          WITNESS my hand and official seal.

Signature __________________ (Seal)




                             ASSIGNMENT OF TRADEMARK

                                   Schedule 1

                                   TRADEMARKS

                             TRADEMARK REGISTRATIONS

          Under the Trademark License Agreement dated June 3, 1999, Grantor is a
licensee of the marks listed below for use at the Riviera Black Hawk.

           MARK                     REGISTRATION NO.                  DATE

           Riviera                  2,090,347                         8/26/97

                             TRADEMARK APPLICATIONS

          Under the Trademark License Agreement dated June 3, 1999, Grantor is a
licensee of the marks listed below for use at the Riviera Black Hawk.

           MARK                     SERIAL NO.                        DATE

           $40 for $20              75/194,182                        11/6/96
           Bonus 21 Plus            75/152,286                        8/19/96
           Jack Pots                75/567,371                        10/8/98
           Jack Pots                75/567,372                        10/8/98
           Jack Pots                75/567,373                        10/8/98
           Loosie Slots             75/567,368                        10/8/98
           Loosie Slots             75/567/369                        10/8/98
           Loosie Slots             75/567/370                        10/8/98
           Nickel Heaven            75/423,123                        1/26/98
           Nickel Town              75/421,961                        1/22/98
           Riviera                  74/646,349                        3/13/95


                                  Schedule 1-1


                               TRADEMARK LICENSES


           Name of Agreement   Parties                         Date of Agreement

           Trademark License   Riviera Black Hawk, Inc.        June 3, 1999
           Agreement           Riviera Operating Corporation


                                  Schedule 1-2