EXHIBIT 32.1

                CERTIFICATION OF THE PRINCIPAL EXECUTIVE OFFICERS
                           Pursuant to 18 U.S.C. 1350
                 (Section 906 of the Sarbanes-Oxley Act of 2002)

In connection with the Annual Report of Exterra Energy Inc. (the "Company") on
Form 10-K for the year ended May 31, 2009 as filed with the Securities and
Exchange Commission on the date hereof (the "Report"), I, Robert Royal, Chief
Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350,
as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to
the best of my knowledge:

     (1) The Report fully complies with the requirements of section 13(a) or
15(d) of the Securities Exchange Act of 1934; and

     (2) The information contained in the Report fairly presents, in all
material respects, the consolidated financial condition and results of
operations of the Company.

                                               /S/ Robert Royal
                                               ----------------
                                               Robert Royal
                                               Chief Executive Officer
                                               October 21, 2009