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

                                    FORM 8-K

              Current Report Pursuant to Section 13 or 15(d) of
                     the Securities Exchange Act of 1934


                       Date of Report: January 20, 2006
              Date of Earliest Event Reported: January 13, 2006


                            NATURAL GAS SYSTEMS, INC.
                            -------------------------
             (Exact Name of Registrant as Specified in its Charter)


                                     Nevada
                                     ------
                 (State or Other Jurisdiction of Incorporation)


               0-27862                                   41-1781991
--------------------------------------      ------------------------------------
      (Commission File Number)              (I.R.S. Employer Identification No.)


820 Gessner, Suite 1340, Houston, Texas                            77024
----------------------------------------                 -----------------------
(Address of Principal Executive Offices)                        (Zip Code)


                                 (713) 935-0122
              (Registrant's Telephone Number, Including Area Code)

                                       N/A
          (Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions:

|_| Written communications pursuant to Rule 425 under the Securities Act (17 CFR
230.425).

|_| Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
240.14a-12).

|_| Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange
Act (17 CFR 240.14d-2(b)).

|_| Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange
Act (17 CFR 240.13e-4(c)).

<PAGE>

ITEM 1.01 ENTRY INTO A MATERIAL DEFINITIVE AGREEMENT.

      As reported on a Current Report on Form 8-K that was filed with the
Securities and Exchange Commission on May 11, 2005, Natural Gas Systems, Inc., a
Nevada corporation ("NGS"), and Rubicon Master Fund, a company organized under
the laws of the Cayman Islands ("Rubicon"), entered into a Securities Purchase
Agreement dated as of May 6, 2005 (the "Original Securities Purchase Agreement")
pursuant to which NGS sold 1,200,000 shares of its common stock to Rubicon.

      On January 13, 2006,  NGS and Rubicon  entered into a Securities  Purchase
Agreement (the "New Securities  Purchase  Agreement")  pursuant to which NGS has
issued 160,000 additional shares of common stock to Rubicon as consideration for
Rubicon's  amending and restating its Registration  Rights Agreement dated as of
May 6, 2005 (the  "Original  Registration  Rights  Agreement")  between  NGS and
Rubicon, which removed NGS' obligation to pay monetary damages to Rubicon if NGS
failed to meet certain of its registration obligations thereunder.

      On January 13, 2006, NGS and Rubicon  entered into an Amended and Restated
Registration Rights Agreement (the "New Registration  Rights Agreement"),  which
amends and restates the Original  Registration Rights Agreement in its entirety.
Pursuant  to the New  Registration  Rights  Agreement,  NGS has agreed to file a
registration  statement  with the  Securities  and Exchange  Commission  for the
purpose of registering  the resale of the 1,200,000  shares of common stock that
were issued to Rubicon under the Original  Securities Purchase Agreement and the
160,000  shares of common  stock that have been issued to Rubicon  under the New
Registration Rights Agreement.

      Copies of the New Securities Purchase Agreement and the New Registration
Rights Agreement are attached hereto as Exhibits 10.1 and 10.2, respectively,
and are incorporated herein by reference. The foregoing summary does not purport
to be complete and is qualified in its entirety by reference to the New
Securities Purchase Agreement and the New Registration Rights Agreement.

ITEM 3.02. UNREGISTERED SALES OF EQUITY SECURITIES.

      As described in Item 1.01, NGS agreed to issue 160,000 shares of common
stock to Rubicon. The shares will be issued pursuant to exemptions from
registration provided by Rule 506 of Regulation D and Section 4(2) of the
Securities Act of 1933.

                                      -2-
<PAGE>

ITEM 9.01. FINANCIAL STATEMENTS AND EXHIBITS.

(c) Exhibits

EXHIBIT NO.     DESCRIPTION
--------------  -------------------------------------------------------------

10.1            Securities Purchase Agreement dated as of January 13, 2006
                by and between Natural Gas Systems, Inc. and Rubicon Master
                Fund*
10.2            Amended and Restated Registration Rights Agreement dated as
                of January 13, 2006 by and between Natural Gas Systems,
                Inc. and Rubicon Master Fund

----------
*     Schedules and other attachments to the Securities Purchase Agreement have
      been omitted pursuant to Item 601(b)(2) of Regulation S-B, but will be
      provided to the Securities and Exchange Commission upon its request.

                                      -3-
<PAGE>

                                   SIGNATURES

      Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.


      Date:  January 20, 2006          NATURAL GAS SYSTEMS, INC.


                                       By: /s/ Robert Herlin
                                          --------------------------------------
                                          Robert Herlin, Chief Executive Officer

                                      -4-
<PAGE>

                                  EXHIBIT INDEX

EXHIBIT NO.     DESCRIPTION
--------------  -------------------------------------------------------------


10.1            Securities Purchase Agreement dated as of January 13, 2006
                by and between Natural Gas Systems, Inc. and Rubicon Master
                Fund*
10.2            Amended and Restated Registration Rights Agreement dated as
                of January 13, 2006 by and between Natural Gas Systems,
                Inc. and Rubicon Master Fund

----------
*     Schedules and other attachments to the Securities Purchase Agreement have
      been omitted pursuant to Item 601(b)(2) of Regulation S-B, but will be
      provided to the Securities and Exchange Commission upon its request.

                                      -5-
{"company-data": {"conformed-name": "NATURAL GAS SYSTEMS INC/NEW", "cik": "0001006655", "assigned-sic": "1311", "irs-number": "411781991", "state-of-incorporation": "NV", "fiscal-year-end": "0630"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-27862", "film-number": "06541026"}, "business-address": {"street1": "820 GESSNER", "street2": "SUITE 1340", "city": "HOUSTON", "state": "TX", "zip": "77024", "phone": "713-935-0122"}, "mail-address": {"street1": "820 GESSNER", "street2": "SUITE 1340", "city": "HOUSTON", "state": "TX", "zip": "77024"}, "former-company": [{"former-conformed-name": "NATURAL GAS SYSTEMS, INC.", "date-changed": "20040810"}, {"former-conformed-name": "REALITY INTERACTIVE INC", "date-changed": "19960301"}]}
UNITED STATES
                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549

                                    FORM 8-K

              Current Report Pursuant to Section 13 or 15(d) of
                     the Securities Exchange Act of 1934

                       Date of Report: January 20, 2006
              Date of Earliest Event Reported: January 13, 2006

                            NATURAL GAS SYSTEMS, INC.
                            -------------------------
             (Exact Name of Registrant as Specified in its Charter)

                                     Nevada
                                     ------
                 (State or Other Jurisdiction of Incorporation)

               0-27862                                   41-1781991
--------------------------------------      ------------------------------------
      (Commission File Number)              (I.R.S. Employer Identification No.)

820 Gessner, Suite 1340, Houston, Texas                            77024
----------------------------------------                 -----------------------
(Address of Principal Executive Offices)                        (Zip Code)

                                 (713) 935-0122
              (Registrant's Telephone Number, Including Area Code)

                                       N/A
          (Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions:

|_| Written communications pursuant to Rule 425 under the Securities Act (17 CFR
230.425).

|_| Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
240.14a-12).

|_| Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange
Act (17 CFR 240.14d-2(b)).

|_| Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange
Act (17 CFR 240.13e-4(c)).
ITEM 1.01 ENTRY INTO A MATERIAL DEFINITIVE AGREEMENT.

      As reported on a Current Report on Form 8-K that was filed with the
Securities and Exchange Commission on May 11, 2005, Natural Gas Systems, Inc., a
Nevada corporation ("NGS"), and Rubicon Master Fund, a company organized under
the laws of the Cayman Islands ("Rubicon"), entered into a Securities Purchase
Agreement dated as of May 6, 2005 (the "Original Securities Purchase Agreement")
pursuant to which NGS sold 1,200,000 shares of its common stock to Rubicon.

      On January 13, 2006,  NGS and Rubicon  entered into a Securities  Purchase
Agreement (the "New Securities  Purchase  Agreement")  pursuant to which NGS has
issued 160,000 additional shares of common stock to Rubicon as consideration for
Rubicon's  amending and restating its Registration  Rights Agreement dated as of
May 6, 2005 (the  "Original  Registration  Rights  Agreement")  between  NGS and
Rubicon, which removed NGS' obligation to pay monetary damages to Rubicon if NGS
failed to meet certain of its registration obligations thereunder.

      On January 13, 2006, NGS and Rubicon  entered into an Amended and Restated
Registration Rights Agreement (the "New Registration  Rights Agreement"),  which
amends and restates the Original  Registration Rights Agreement in its entirety.
Pursuant  to the New  Registration  Rights  Agreement,  NGS has agreed to file a
registration  statement  with the  Securities  and Exchange  Commission  for the
purpose of registering  the resale of the 1,200,000  shares of common stock that
were issued to Rubicon under the Original  Securities Purchase Agreement and the
160,000  shares of common  stock that have been issued to Rubicon  under the New
Registration Rights Agreement.

      Copies of the New Securities Purchase Agreement and the New Registration
Rights Agreement are attached hereto as Exhibits 10.1 and 10.2, respectively,
and are incorporated herein by reference. The foregoing summary does not purport
to be complete and is qualified in its entirety by reference to the New
Securities Purchase Agreement and the New Registration Rights Agreement.

ITEM 3.02. UNREGISTERED SALES OF EQUITY SECURITIES.

      As described in Item 1.01, NGS agreed to issue 160,000 shares of common
stock to Rubicon. The shares will be issued pursuant to exemptions from
registration provided by Rule 506 of Regulation D and Section 4(2) of the
Securities Act of 1933.

                                      -2-
ITEM 9.01. FINANCIAL STATEMENTS AND EXHIBITS.

(c) Exhibits

EXHIBIT NO.     DESCRIPTION
--------------  -------------------------------------------------------------

10.1            Securities Purchase Agreement dated as of January 13, 2006
                by and between Natural Gas Systems, Inc. and Rubicon Master
                Fund*
10.2            Amended and Restated Registration Rights Agreement dated as
                of January 13, 2006 by and between Natural Gas Systems,
                Inc. and Rubicon Master Fund

----------
*     Schedules and other attachments to the Securities Purchase Agreement have
      been omitted pursuant to Item 601(b)(2) of Regulation S-B, but will be
      provided to the Securities and Exchange Commission upon its request.

                                      -3-
SIGNATURES

      Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.

      Date:  January 20, 2006          NATURAL GAS SYSTEMS, INC.

                                       By: /s/ Robert Herlin
                                          --------------------------------------
                                          Robert Herlin, Chief Executive Officer

                                      -4-
EXHIBIT INDEX

EXHIBIT NO.     DESCRIPTION
--------------  -------------------------------------------------------------

10.1            Securities Purchase Agreement dated as of January 13, 2006
                by and between Natural Gas Systems, Inc. and Rubicon Master
                Fund*
10.2            Amended and Restated Registration Rights Agreement dated as
                of January 13, 2006 by and between Natural Gas Systems,
                Inc. and Rubicon Master Fund

----------
*     Schedules and other attachments to the Securities Purchase Agreement have
      been omitted pursuant to Item 601(b)(2) of Regulation S-B, but will be
      provided to the Securities and Exchange Commission upon its request.

                                      -5-