SECURITIES & EXCHANGE COMMISSION
                             Washington, D.C. 20549
                             ----------------------

                                  SCHEDULE 13G
                                 (Rule 13d-102)

             INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
           TO RULES 13d-1(b), (c) AND (d) AND AMENDMENTS THERETO FILED
                              PURSUANT TO 13d-2(b)

                               (Amendment No. __)*

                                GRAVITY CO., LTD.
                                (Name of Issuer)

                    Common Stock, Par Value Won 500 Per Share
                         (Title of Class of Securities)

                                    38911N107
                                 (CUSIP Number)

                               September 30, 2005
             (Date of event which requires filing of this statement)


     Check the appropriate box to designate the rule pursuant to which this
Schedule 13G is filed:

     [ ]  Rule 13d-1(b)
     [X]  Rule 13d-1(c)
     [ ]  Rule 13d-1(d)





                              (Page 1 of 11 Pages)
---------------
     *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 purposes 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. 38911N107                      13G             Page 2 of 11 Pages

-----------------------------------------------------------------------------
     (1)    NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NO.
            OF ABOVE PERSONS (ENTITIES ONLY)
                              Moon Capital Master Fund Ltd.
-----------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
                                                                  (a)  [X]
                                                                  (b)  [ ]
-----------------------------------------------------------------------------
     (3)    SEC USE ONLY
-----------------------------------------------------------------------------
     (4)    CITIZENSHIP OR PLACE OF ORGANIZATION
                                             Delaware
-----------------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                                                -0-
SHARES         --------------------------------------------------------------

BENEFICIALLY   (6)  SHARED VOTING POWER
                                                1,518,200
OWNED BY       --------------------------------------------------------------

EACH           (7)  SOLE DISPOSITIVE POWER
                                                -0-
REPORTING      --------------------------------------------------------------

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                                                1,518,200
-----------------------------------------------------------------------------
     (9)    AGGREGATE AMOUNT BENEFICIALLY OWNED
            BY EACH REPORTING PERSON
                                                -0-
-----------------------------------------------------------------------------
     (10)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES **                       [ ]
-----------------------------------------------------------------------------
     (11)   PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (9)
                                                5.5%
-----------------------------------------------------------------------------
     (12)   TYPE OF REPORTING PERSON **
                                                CO
-----------------------------------------------------------------------------
                     ** SEE INSTRUCTIONS BEFORE FILLING OUT!






CUSIP No. 38911N107                      13G             Page 3 of 11 Pages

-----------------------------------------------------------------------------
     (1)    NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NO.
            OF ABOVE PERSONS (ENTITIES ONLY)
                              Moon Capital Management LP
-----------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
                                                                  (a)  [X]
                                                                  (b)  [ ]
-----------------------------------------------------------------------------
     (3)    SEC USE ONLY
-----------------------------------------------------------------------------
     (4)    CITIZENSHIP OR PLACE OF ORGANIZATION
                                             Delaware
-----------------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                                                -0-
SHARES         --------------------------------------------------------------

BENEFICIALLY   (6)  SHARED VOTING POWER
                                                1,518,200
OWNED BY       --------------------------------------------------------------

EACH           (7)  SOLE DISPOSITIVE POWER
                                                -0-
REPORTING      --------------------------------------------------------------

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                                                1,518,200
-----------------------------------------------------------------------------
     (9)    AGGREGATE AMOUNT BENEFICIALLY OWNED
            BY EACH REPORTING PERSON
                                                -0-
-----------------------------------------------------------------------------
     (10)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES **                       [ ]
-----------------------------------------------------------------------------
     (11)   PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (9)
                                                5.5%
-----------------------------------------------------------------------------
     (12)   TYPE OF REPORTING PERSON **
                                                PN
-----------------------------------------------------------------------------
                     ** SEE INSTRUCTIONS BEFORE FILLING OUT!






CUSIP No. 38911N107                      13G             Page 4 of 11 Pages

-----------------------------------------------------------------------------
     (1)    NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NO.
            OF ABOVE PERSONS (ENTITIES ONLY)
                              JWM Capital LLC
-----------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
                                                                  (a)  [X]
                                                                  (b)  [ ]
-----------------------------------------------------------------------------
     (3)    SEC USE ONLY
-----------------------------------------------------------------------------
     (4)    CITIZENSHIP OR PLACE OF ORGANIZATION
                                             Delaware
-----------------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                                                -0-
SHARES         --------------------------------------------------------------

BENEFICIALLY   (6)  SHARED VOTING POWER
                                                1,518,200
OWNED BY       --------------------------------------------------------------

EACH           (7)  SOLE DISPOSITIVE POWER
                                                -0-
REPORTING      --------------------------------------------------------------

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                                                1,518,200
-----------------------------------------------------------------------------
     (9)    AGGREGATE AMOUNT BENEFICIALLY OWNED
            BY EACH REPORTING PERSON
                                                -0-
-----------------------------------------------------------------------------
     (10)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES **                       [ ]
-----------------------------------------------------------------------------
     (11)   PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (9)
                                                5.5%
-----------------------------------------------------------------------------
     (12)   TYPE OF REPORTING PERSON **
                                                OO
-----------------------------------------------------------------------------
                     ** SEE INSTRUCTIONS BEFORE FILLING OUT!






CUSIP No. 38911N107                      13G             Page 5 of 11 Pages

-----------------------------------------------------------------------------
     (1)    NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NO.
            OF ABOVE PERSONS (ENTITIES ONLY)
                              John W. Moon
-----------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
                                                                  (a)  [X]
                                                                  (b)  [ ]
-----------------------------------------------------------------------------
     (3)    SEC USE ONLY
-----------------------------------------------------------------------------
     (4)    CITIZENSHIP OR PLACE OF ORGANIZATION
                                             United States of America
-----------------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                                                -0-
SHARES         --------------------------------------------------------------

BENEFICIALLY   (6)  SHARED VOTING POWER
                                                1,518,200
OWNED BY       --------------------------------------------------------------

EACH           (7)  SOLE DISPOSITIVE POWER
                                                -0-
REPORTING      --------------------------------------------------------------

PERSON WITH    (8)  SHARED DISPOSITIVE POWER
                                                1,518,200
-----------------------------------------------------------------------------
     (9)    AGGREGATE AMOUNT BENEFICIALLY OWNED
            BY EACH REPORTING PERSON
                                                -0-
-----------------------------------------------------------------------------
     (10)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES **                       [ ]
-----------------------------------------------------------------------------
     (11)   PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (9)
                                                5.5%
-----------------------------------------------------------------------------
     (12)   TYPE OF REPORTING PERSON **
                                                IN
-----------------------------------------------------------------------------
                     ** SEE INSTRUCTIONS BEFORE FILLING OUT!






CUSIP No. 38911N107                      13G             Page 6 of 11 Pages

Item 1(a).     Name of Issuer:

     The name of the issuer is GRAVITY Co., Ltd. (the "Company").

Item 1(b).     Address of Issuer's Principal Executive Offices:

     The Company's principal executive office is located at Shingu Building,
620-2 Shinsa-dong, Gangnam-gu, Seoul 135-894 Korea

Item 2(a).     Name of Person Filing:

     This statement is filed by:

            (i)   Moon Capital Master Fund Ltd., a Cayman Islands exempted
                  company (the "Master Fund"), with respect to shares of Common
                  Stock (as defined in Item 2(d) below) directly owned by it;

            (ii)  Moon Capital Management LP, a Delaware limited partnership
                  (the "Investment Manager"), which serves as the investment
                  manager of the Master Fund, with respect to shares of Common
                  Stock directly owned by the Master Fund;

            (iii) JWM Capital LLC, a Delaware limited liability company (the "IM
                  GP"), which serves as the general partner to the Investment
                  Manager, with respect to shares of Common Stock directly owned
                  by the Master Fund;

             (iv) Mr. John W. Moon ("Mr. Moon"), who serves as the managing
                  member of the IMGP with respect to shares of Common Stock
                  directly owned by the Master Fund.

     The Master Fund, the Investment Manager, the IMGP and Mr. Moon are
hereinafter sometimes collectively referred to as the "Reporting Persons." Any
disclosures herein with respect to persons other than the Reporting Persons are
made on information and belief after making inquiry to the appropriate party.






CUSIP No. 38911N107                      13G             Page 7 of 11 Pages

Item 2(b).     Address of Principal Business Office or, if None, Residence:

     The address of the business office of each of the Reporting Persons is 499
Park Avenue, 9th Floor, New York, NY 10022.

Item 2(c).     Citizenship:

     Each of the Investment Manager and the IMGP is organized under the laws of
the State of Delaware. The Master Fund is organized under the laws of the Cayman
Islands. Mr. Moon is a citizen of the United States of America.

Item 2(d).     Title of Class of Securities:

     Common Stock, par value Won 500 per share (the "Common Stock")

Item 2(e).  CUSIP Number:

     38911N107

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

          (a) [ ]  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) [ ]  Investment Adviser in accordance with Rule
                   13d-1(b)(1)(ii)(E),

          (f) [ ]  Employee Benefit Plan or Endowment Fund in accordance
                   with Rule 13d-1(b)(1)(ii)(F),

          (g) [ ]  Parent Holding Company or control person in accordance
                   with Rule 13d-1(b)(1)(ii)(G),

          (h) [ ]  Savings Association as defined in Section 3(b) of the
                   Federal Deposit Insurance Act,

          (i) [ ]  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).

If this statement is filed pursuant to 13d-1(c), check this box:  [x]






CUSIP No. 38911N107                      13G            Page 8 of 11 Pages

Item 4.   Ownership.

     A. Moon Capital Master Fund Ltd.
          (a) Amount beneficially owned: 1,518,200
              The percentages used herein and in the rest of this Schedule 13G
              are calculated based upon the 27,796,000 shares of Common Stock
              issued and outstanding as of the date hereof as published by
              Bloomberg Financial Markets, including through American depositary
              shares.
          (b) Percent of class: 5.5%
          (c) Number of shares as to which such person has:
             (i) Sole power to vote or direct the vote: -0-
            (ii) Shared power to vote or direct the vote: 1,518,200
           (iii) Sole power to dispose or direct the disposition: -0-
            (iv) Shared power to dispose or direct the
                 disposition:  1,518,200

     B. Moon Capital Management LP
          (a) Amount beneficially owned: 1,518,200
          (b) Percent of class: 5.5%
          (c) Number of shares as to which such person has:
             (i) Sole power to vote or direct the vote: -0-
            (ii) Shared power to vote or direct the vote: 1,518,200
           (iii) Sole power to dispose or direct the disposition: -0-
            (iv) Shared power to dispose or direct the
                 disposition:  1,518,200

     C. JWM Capital LLC
          (a) Amount beneficially owned: 1,518,200
          (b) Percent of class: 5.5%
          (c) Number of shares as to which such person has:
             (i) Sole power to vote or direct the vote: -0-
            (ii) Shared power to vote or direct the vote: 1,518,200
           (iii) Sole power to dispose or direct the disposition: -0-
            (iv) Shared power to dispose or direct the
                 disposition:  1,518,200

     D. Mr. John W. Moon
          (a) Amount beneficially owned: 1,518,200
          (b) Percent of class: 5.5%
          (c) Number of shares as to which such person has:
             (i) Sole power to vote or direct the vote: -0-
            (ii) Shared power to vote or direct the vote: 1,518,200
           (iii) Sole power to dispose or direct the disposition: -0-
            (iv) Shared power to dispose or direct the
                 disposition:  1,518,200






CUSIP No. 38911N107                      13G            Page 9 of 11 Pages

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

     Not applicable.

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

     Not applicable.

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

     Not applicable.

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

     See Item 2.

Item 9.  Notice of Dissolution of Group.

     Not applicable.






CUSIP No. 38911N107                      13G            Page 10 of 11 Pages

Item 10.  Certification.

     Each of the Reporting Persons hereby makes the following certification:

          By signing below I certify that, to the best of my knowledge and
belief, the securities referred to above 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.


DATED:  October 11, 2005


                                  /S/ JOHN W. MOON
                                  -------------------------------------
                                  John W. Moon,
                                  individually and as managing member of JWM
                                  Capital LLC, for itself and as the general
                                  partner of Moon Capital Management LP, for
                                  itself and as the investment manager of Moon
                                  Capital Master Fund Ltd.






CUSIP No. 38911N107                  13G               Page 11 of 11 Pages

                                    EXHIBIT 1

                           JOINT ACQUISITION STATEMENT
                            PURSUANT TO RULE 13d-1(k)


     The undersigned acknowledge and agree that the foregoing statement on
Schedule 13G, is filed on behalf of each of the undersigned and that all
subsequent amendments to this statement on Schedule 13G, shall be filed on
behalf of each of the undersigned without the necessity of filing additional
joint acquisition statements. The undersigned acknowledge that each shall be
responsible for the timely filing of such amendments, and for the completeness
and accuracy of the information concerning him or it contained therein, but
shall not be responsible for the completeness and accuracy of the information
concerning the others, except to the extent that he or it knows or has reason to
believe that such information is inaccurate.


DATED:  October 11, 2005


                                  /S/ JOHN W. MOON
                                  -------------------------------------
                                  John W. Moon,
                                  individually and as managing member of JWM
                                  Capital LLC, for itself and as the general
                                  partner of Moon Capital Management LP, for
                                  itself and as the investment manager of Moon
                                  Capital Master Fund Ltd.