<PAGE>

                                                                    EXHIBIT 31.1

                                  CERTIFICATION

I, Bruno Bonnell, certify that:

1.    I have reviewed this annual report on Form 10-K for the period ending
March 31, 2004, of Atari, Inc.;

2.    Based on my knowledge, this report does not contain any untrue statement
of a material fact or omit to state a material fact necessary to make the
statements made, in light of the circumstances under which such statements were
made, not misleading with respect to the period covered by this report;

3.    Based on my knowledge, the financial statements and other financial
information included in this report, fairly present in all material respects the
financial condition, results of operations and cash flows of the registrant as
of, and for, the periods presented in this report;

4.    I am responsible for establishing and maintaining disclosure controls and
procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the
registrant and have:

      a)    Designed such disclosure controls and procedures, or caused such
      disclosure controls and procedures to be designed under my supervision,
      to ensure that material information relating to the registrant, including
      its consolidated subsidiaries, is made known to me by others within those
      entities, particularly during the period in which this report is being
      prepared;

      b)    Evaluated the effectiveness of the registrant's disclosure controls
      and procedures and presented in this report my conclusions about the
      effectiveness of the disclosure controls and procedures, as of the end of
      the period covered by this report based on such evaluation; and

      c)    Disclosed in this report any change in the registrant's internal
      control over financial reporting that occurred during the registrant's
      most recent fiscal quarter (the registrant's fourth fiscal quarter in the
      case of an annual report) that has materially affected, or is reasonably
      likely to materially affect, the registrant's internal control over
      financial reporting; and

5.    I have disclosed, based on my most recent evaluation of internal control
over financial reporting, to the registrant's auditors and the audit committee
of registrant's board of directors (or persons performing the equivalent
function):

      a)    All significant deficiencies and material weaknesses in the design
      or operation of internal control over financial reporting which are
      reasonably likely to adversely affect the registrant's ability to record,
      process, summarize and report financial information; and

      b)    Any fraud, whether or not material, that involves management or
      other employees who have a significant role in the registrant's internal
      control over financial reporting.

Date: June 14, 2004

                                By:             /s/ Bruno Bonnell
                                    ----------------------------------------
                                    Name:  Bruno Bonnell
                                    Title: Chairman, Chief Executive Officer and
                                           Acting Chief Financial Officer