UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549

                                  SCHEDULE 13G

                   Under the Securities Exchange Act of 1934
                             (Amendment No.______)*


                                Zone 4 Play, Inc.
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                                (Name of Issuer)

                     Common Stock, par value $.001 per share
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                         (Title of Class of Securities)

                                   989759105
                        ------------------------------
                                 (CUSIP Number)

                               November 9, 2004 
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            (Date of Event Which Requires Filing of this Statement)


Check the appropriate box to designate the rule pursuant to which this Schedule 
is filed:

[X ] Rule 13d-1(b)

[  ] Rule 13d-1(c)

[  ] Rule 13d-1(d)

*The remainder of this cover page shall be filled out for a reporting person's 
initial filing on this form with respect to the subject class of securities, 
and for any subsequent amendment containing information which would alter the 
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be 
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange 
Act of 1934 ("Act") or otherwise subject to the liabilities of that section of 
the Act but shall be subject to all other provisions of the Act (however, see 
the Notes).
 
CUSIP NO. 989759 10 5
          ---------
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 1    NAMES OF REPORTING PERSONS.
      I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY).

      Weiss, Peck & Greer Investments, a division of Robeco USA, L.L.C.
      13-2649199
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 2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
      (a) [  ]
      (b) [x]
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 3    SEC USE ONLY 
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 4    CITIZENSHIP OR PLACE OF ORGANIZATION  Delaware
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              5    SOLE VOTING POWER  0
NUMBER OF     -----------------------------------------------------------------
SHARES   
BENEFICIALLY  6    SHARED VOTING POWER  2,810,400
OWNED BY      -----------------------------------------------------------------
EACH
REPORTING     7    SOLE DISPOSITIVE POWER  0
PERSON WITH   -----------------------------------------------------------------
              8    SHARED DISPOSITIVE POWER  2,810,400
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 9    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON  2,810,400
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 10   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
      (SEE INSTRUCTIONS)[]
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 11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)  13.6%
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 12   TYPE OF REPORTING PERSON (SEE INSTRUCTIONS) 
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      BD,IA
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Item 1

    (a)  Name of Issuer:   Zone 4 Play, Inc.

    (b)  Address of Issuer's Principal Executive Offices
         103 Foulk Road, Suite 202, Wilmington, Delaware 19803

Item 2

    (a)  Name of Person Filing:  Weiss, Peck & Greer Investments, a division of 
         Robeco USA, L.L.C.

    (b)  Address of Principal Business Office or, if none, Residence
         One New York Plaza, New York, NY  10004

    (c)  Citizenship  WPG is a Limited Liability Company, organized under the 
         laws of the State of Delaware.

    (d)  Title of Class of Securities  Common Stock

    (e)  CUSIP Number  989759105

Item 3.  If this statement is filed pursuant to 13d-1(b) or 13d-2(b) or (c), 
check whether the person filing is a:

    (a)  [X ]  Broker or dealer registered under section 15 of the Act 

    (b)  [  ] Bank as defined in section 3(a)(6) of the Act 

    (c)  [  ] Insurance company as defined in section 3(a)(19) of the Act 

    (d)  [  ] Investment company registered under section 8 of the Investment
              Company Act of 1940 

    (e)  [X ] An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E);

    (f)  [  ] An employee benefit plan or endowment fund in accordance with 
              Rule 13d-1(b)(1)(ii)(F);

    (g)  [  ] A parent holding company or control person in accordance with
              Rule 13d-1(b)(1)(ii)(G);

    (h)  [  ] A savings associations as defined in Section 3(b) of the Federal 
              Deposit Insurance Act (12 U.S.C. 1813);

    (i)  [  ] A church plan that is excluded from the definition of an 
              investment company under section 3(c)(14) of the Investment
              Company Act of 1940 

    (j)  [  ] Group, in accordance with Rule 13d-1(b)(1)(ii)(J).


Item 4.  Ownership.

Provide the following information regarding the aggregate number and percentage 
of the class of securities of the issuer identified in Item 1.

    (a)  Amount beneficially owned:  2,810,400 as of October 31, 2004.

    (b)  Percent of class:  13.6% based on 20,617,789 shares outstanding 
         (calculated by adding (i) 19,517,789 shares outstanding pursuant to 
         the Form 10-QSB for the quarter ended June 30, 2004 filed by Zone 4 
         Play, Inc., and (ii) warrants for 1,100,000 shares deemed outstanding
         pursuant to Rule 13-d(3)(d)(1)(i) under the Securities Exchange Act 
         of 1934).

    (c)  Number of shares as to which the person has:

       (i)   Sole power to vote or to direct the vote  0

       (ii)  Shared power to vote or to direct the vote  2,810,400

       (iii) Sole power to dispose or to direct the disposition of  0

       (iv)  Shared power to dispose or to direct the disposition of 2,810,400


Item 5.  Ownership of Five Percent or Less of a Class.

If this statement is being filed to report the fact that as of the date hereof 
the reporting person has ceased to be the beneficial owner of more than five 
percent of the class of securities, check the following: [  ]

Item 6.  Ownership of More than Five Percent on Behalf of Another Person.

This statement on Schedule 13G (Schedule 13G) is filed by Robeco USA, L.L.C., 
a Delaware limited liability company which is registered as a broker-dealer 
under Section 15 of the Act, and as an investment adviser under Section 203 of 
the Investment Advisers Act of 1940, as amended.

This Schedule 13G is being filed with respect to 2,810,400 shares of common 
stock of Zone 4 Play, Inc., (the Common Stock) held by Robeco at October 31, 
2004 for the discretionary accounts of certain clients.  By reason of Rule 13d-
3 under the Act, Robeco may be deemed to be a beneficial owner of such Common 
Stock.  Robeco expressly disclaims beneficial ownership of the Common Stock.  
Each client has the right to receive or the power to direct the receipt of 
dividends from, or the proceeds from the sale of, such common stock purchased 
for his account.  To the knowledge of Robeco, no person has the right to 
receive or the power to direct the receipt of dividends from, or the proceeds 
from the sale of, such Common Stock which represents more than 5% of the 
outstanding shares of the Common Stock referred to in Item 4(b) hereof.


Item 7.  Identification and Classification of the Subsidiary Which Acquired the
         Security Being Reported on by the Parent Holding Company.


Item 8.  Identification and Classification of Members of the Group.


Item 9.  Notice of Dissolution of a Group


Item 10.  Certification

     (a)  The following certification shall be included if the statement is 
filed pursuant to Rule 13d-1(b):

              By signing below I certify that, to the best of my knowledge and
              belief, the securities referred to above were acquired and are
              held in the ordinary course of business and were not acquired and
              are not held for the purpose of or with the effect of changing or
              influencing the control of the issuer of the securities and were
              not acquired and are not held in connection with or as a
              participant in any transaction having that purpose or effect.

     


                                   SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify 
that the information set forth in this statement is true, complete and correct.


                                                 November 9, 2004
                                         ----------------------------------
                                                       Date

                                             /s/ Mary Ann Iudice
                                         ----------------------------------
                                                     Signature

                                              Chief Compliance Officer
                                         ----------------------------------
                                                     Name/Title



Attention: Intentional misstatements or omissions of fact constitute Federal 
criminal violations (See 18 U.S.C. 1001)

ACN/Form 13G  (C) 2001: Advisor Consultant Network, Inc.