Filed pursuant to Rule 424(b)(3)
                                                      Registration No. 333-83492

PROSPECTUS SUPPLEMENT NO. 4
TO PROSPECTUS DATED JUNE 3, 2002

                                  $175,000,000

                           GTECH Holdings Corporation

               1-3/4% Convertible Debentures due December 15, 2021
                     fully and unconditionally guaranteed by

                GTECH Corporation and Certain of its Subsidiaries
                                     -------

         This prospectus supplement no. 4 relates to the resale by the selling
securityholders (including their pledgees, donees, assignees, transferees,
successors and others who later hold any of their interests) of 1-3/4%
Convertible Debentures due December 15, 2021 issued by GTECH Holdings
Corporation and the shares of GTECH common stock issuable upon conversion of
those debentures.

         This prospectus supplement should be read in conjunction with the
prospectus dated June 3, 2002, as supplemented June 12, 2002, June 18, 2002 and
June 26, 2002, which is to be delivered with this prospectus supplement. This
prospectus supplement is qualified by reference to the prospectus and prior
supplements, except to the extent that the information in this prospectus
supplement supersedes the information contained in the prospectus or prior
supplements. Terms used in this prospectus supplement and not otherwise defined
herein have the meanings with which they are used in the prospectus.

         Neither the Securities and Exchange Commission, any state securities
commission nor any other regulatory body has approved or disapproved of these
securities or determined if this prospectus is truthful or complete. Any
representation to the contrary is a criminal offense.

         The table of selling securityholders contained in the prospectus is
hereby amended to add the entities named below as selling securityholders:



                                                                                      Number of
                                                       Aggregate                      Shares of      Percentage of
                                                       Principal                      GTECH Common   Shares of GTECH
                                                       Amount of       Percentage of  Stock That May Common Stock
                                                       Debentures That Debentures     Be Sold (1)    Outstanding (2)
                         Name                          May Be Sold     Outstanding
                                                                                          

Arbitex Master Fund L.P............................... $10,000,000      5.71%         363,636         *
Wachovia Securities International Ltd.................  $1,500,000         *           54,545         *


* Less than one percent (1%).
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(1) Assumes conversion of all of the holder's debentures at a conversion
price of $27.50 per share of common stock. This conversion price is subject to
adjustment, however, as described under "Description of Debentures--Conversion
Rights--Conversion Price Adjustments" beginning on page 19 of the prospectus. As
a result, the number of shares of common stock issuable upon conversion of the
debentures may increase or decrease in the future. Does not include shares of
GTECH common stock that we may issue upon purchase of debentures by us at the
option of the holder.

(2) Calculated according to Rule 13d-3(d)(i) of the Exchange Act, using
57,276,698 shares of common stock outstanding as of June 21, 2002. In
calculating this amount for each holder, we treated as outstanding the number of
shares of GTECH common stock issuable upon conversion of all of that holder's
debentures, but we did not assume conversion of any other holder's debentures.
Does not include shares of GTECH common stock that we may issue upon purchase of
debentures by us at the option of the holder.


        Information about other selling securityholders will be set forth in
additional prospectus supplements, if required.

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        Investing in the debentures involves risks that are described in the
prospectus, including the section captioned "Risk Factors" beginning on page 6
of the prospectus.

             The date of this prospectus supplement is July 19, 2002