Document:

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                                                                     Exhibit 4.1

                           SPECIMEN UNIT CERTIFICATE

NUMBER                                                                    UNITS
U-___________

SEE REVERSE FOR CERTAIN
     DEFINITIONS

                      STONE ARCADE ACQUISITION CORPORATION

                                                                          CUSIP

         UNITS CONSISTING OF ONE SHARE OF COMMON STOCK AND TWO WARRANTS
                   EACH TO PURCHASE ONE SHARE OF COMMON STOCK

THIS CERTIFIES THAT _______________________________________________________
is the owner of______________________________________________________ Units.

Each Unit ("Unit") consists of one (1) share of common stock, par value $.0001
per share ("Common Stock"), of Stone Arcade Acquisition Corporation, a Delaware
corporation (the "Company"), and two warrants (the "Warrants"). Each Warrant
entitles the holder to purchase one (1) share of Common Stock for $5.00 per
share (subject to adjustment). Each Warrant will become exercisable on the later
of (i) the Company's completion of a merger, capital stock exchange, asset
acquisition or other similar business combination or (ii) ______________, 2006
and will expire unless exercised before 5:00 p.m., New York City Time, on
____________, 2009, or earlier upon redemption (the "Expiration Date"). The
Common Stock and Warrants comprising the Units represented by this certificate
are not transferable separately prior to __________, 2005, subject to earlier
separation in the discretion of Morgan Joseph & Co. Inc. The terms of the
Warrants are governed by a Warrant Agreement, dated as of _______, 2005, between
the Company and Continental Stock Transfer & Trust Company, as Warrant Agent,
and are subject to the terms and provisions contained therein, all of which
terms and provisions the holder of this certificate consents to by acceptance
hereof. Copies of the Warrant Agreement are on file at the office of the Warrant
Agent at 17 Battery Place, New York, New York 10004, and are available to any
Warrant holder on written request and without cost. This certificate is not
valid unless countersigned by the Transfer Agent and Registrar of the Company.

Witness the facsimile seal of the Company and the facsimile signature of its
duly authorized officers.

By
   ___________________________     __________________________________________
         Chairman of the Board     Secretary

                      STONE ARCADE ACQUISITION CORPORATION
                                   CORPORATE
                                      SEAL
                                      2005
                                    DELAWARE

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                      STONE ARCADE ACQUISITION CORPORATION

     The Company will furnish without charge to each stockholder who so
requests, a statement of the powers, designations, preferences and relative,
participating, optional or other special rights of each class of stock or series
thereof of the Company and the qualifications, limitations, or restrictions of
such preferences and/or rights.

     The following abbreviations, when used in the inscription on the face of
this certificate, shall be construed as though they were written out in full
according to applicable laws or regulations:

     TEN COM  -  as tenants in common
     TEN ENT  -  as tenants by the entireties
     JT TEN  -  as joint tenants with right of survivorship
                and not as tenants in common

UNIF GIFT MIN ACT - ___________ Custodian ________________
                       (Cust)                 (Minor)
                       under Uniform Gifts to Minors
                       Act _______________________________
                                    (State)

Additional Abbreviations may also be used though not in the above list.

     For value received, ___________________________ hereby sell, assign and
transfer unto

PLEASE INSERT SOCIAL SECURITY OR OTHER
IDENTIFYING NUMBER OF ASSIGNEE

______________________________________

______________________________________

_______________________________________________________________________________
(PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE)

_______________________________________________________________________________

_______________________________________________________________________________

_________________________________________________________________________ Units
represented by the within Certificate, and do hereby irrevocably constitute and
appoint

______________________________________________________________________ Attorney
to transfer the said Units on the books of the within named Company will full
power of substitution in the premises.

Dated ________________________
                                   ___________________________________________
                                   NOTICE: The signature to this assignment must
                                           correspond with the name as written
                                           upon the face of the certificate in
                                           every particular, without alteration
                                           or enlargement or any change
                                           whatever.

                                       2
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Signature(s) Guaranteed:

_______________________________________________________________________________

THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION
(BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH
MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM, PURSUANT TO
S.E.C. RULE 17Ad-15).

                                       3<PAGE>
                                                                     Exhibit 4.2

                       SPECIMEN COMMON STOCK CERTIFICATE

NUMBER                                                                    SHARES
_________C

                      STONE ARCADE ACQUISITION CORPORATION
              INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE
                                  COMMON STOCK

                                                                 SEE REVERSE FOR
                                                             CERTAIN DEFINITIONS

THIS CERTIFIES THAT                                      CUSIP

IS THE OWNER OF

            FULLY PAID AND NON-ASSESSABLE SHARES OF THE PAR VALUE OF
                       $.0001 EACH OF THE COMMON STOCK OF

                      STONE ARCADE ACQUISITION CORPORATION

  transferable on the books of the Corporation in person or by duly authorized
      attorney upon surrender of this certificate properly endorsed. This
         certificate is not valid unless countersigned by the Transfer
           Agent and registered by the Registrar. Witness the seal of
                the Corporation and the facsimile signatures of
                         its duly authorized officers.

     Dated:

___________________________________    ________________________________________
CHAIRMAN                               SECRETARY

                      STONE ARCADE ACQUISITION CORPORATION
                                   CORPORATE
                                   SEAL 2005
                                    DELAWARE

     The following abbreviations, when used in the inscription on the face of
this certificate, shall be construed as though they were written out in full
according to applicable laws or regulations:

     TEN COM  -  as tenants in common
     TEN ENT  -  as tenants by the entireties
     JT TEN - as joint tenants with right of survivorship
              and not as tenants in common

<PAGE>

UNIF GIFT MIN ACT - __________   Custodian __________
                      (Cust)                (Minor)
                      under Uniform Gifts to Minors
                      Act ___________________________
                                   (State)

    Additional Abbreviations may also be used though not in the above list.

                      STONE ARCADE ACQUISITION CORPORATION

     The Corporation will furnish without charge to each stockholder who so
requests the powers, designations, preferences and relative, participating,
optional or other special rights of each class of stock or series thereof of the
Corporation and the qualifications, limitations, or restrictions of such
preferences and/or rights. This certificate and the shares represented thereby
are issued and shall be held subject to all the provisions of the Certificate of
Incorporation and all amendments thereto and resolutions of the Board of
Directors providing for the issue of shares of Preferred Stock (copies of which
may be obtained from the secretary of the Corporation), to all of which the
holder of this certificate by acceptance hereof assents.

     For value received, ___________________________ hereby sell, assign and
transfer unto

PLEASE INSERT SOCIAL SECURITY OR
             OTHER
IDENTIFYING NUMBER OF ASSIGNEE

_________________________________

_________________________________

______________________________________________________________________________
(PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE)

______________________________________________________________________________

______________________________________________________________________________

________________________________________________________________________ shares
of the capital stock represented by the within Certificate, and do hereby
irrevocably constitute and appoint  __________________________________________
Attorney to transfer the said stock on the books of the within named Corporation
will full power of substitution in the premises.

Dated ________________________
                                  _____________________________________________
                                  NOTICE: The signature to this assignment must
                                          correspond with the name as written
                                          upon the face of the certificate in
                                          every particular, without alteration
                                          or enlargement or any change whatever.

                                       2
<PAGE>
Signature(s) Guaranteed

_____________________________________________________________________________

THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION
(BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH
MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM, PURSUANT TO
S.E.C. RULE 17Ad-15).

The holder of this certificate shall be entitled to receive funds from the trust
fund only in the event of the Company's liquidation or if the holder seeks to
convert his respective shares into cash upon a business combination which he
voted against and which is actually completed by the Company. In no other
circumstances shall the holder have any right or interest of any kind in or to
the trust fund.

                                       3

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