EXHIBIT 21.1 GTECH HOLDINGS CORPORATION SUBSIDIARIES A. Direct: GTECH Corporation B. Indirect Subsidiaries of GTECH Holdings Corporation: BTN Telecommunicaciones Ltda. (Brazil) Data Transfer Systems, Inc. DataTrans Sp. z.o.o. (Poland) (52% effective control by GTECH) Dreamport, Inc. Dreamport International, Inc. Dreamport do Brasil Ltda. (Brazil) (99% owned by GTECH; 1% owned by GTFH) Dreamport Turfway LLC Dreamport Suffolk Corporation Environmental Paper Products, Inc. (RI) Cam Galaxy Group Ltd. (UK) (80% owned by GTECH) JSJ Ltd. (UK) (80% owned by GTECH) Europrint Holdings (UK) (40% owned by Cam Galaxy; 60% owned by JSJ Ltd. (UK) GameScape, Inc. (RI) Gana de Mexico S.A. de C.V. (Mexico) (99.998% owned by GTFH; 0.002% owned by GTLA) GRYTEK Co. Ltd. (Poland) GTECH Argentina S.A. (Argentina) GTECH Asia Corporation GTECH Australasia Corporation GTECH Brasil Ltda (Brazil) (99.75% owned by GTECH; 0.25% owned by GTFH) GTECH Canada Computer Systems Corporation (Canada) GTECH Child Care Center (RI) GTECH Communicaciones Colombia Ltd. (Colombia) (99.99% owned by GTECH) GTECH Computer Systems Sdn Bhd(Malaysia) GTECH Corporation (Utah) (Utah) GTECH Eastern Europe Sp. zo.o. (Poland) GTECH Eesti A.S. (Estonia) GTECH Espana Corporation GTECH Europe S.A. (Belgium) (99.99% owned by GTECH; 0.01% owned by GTFH) GTECH Far East Pte Ltd (Singapore) GTECH Foreign Holdings Corporation Online Transaction Technologies SARL a Associe Unique (Morocco) GTECH Cote d'Ivoire (Ivory Coast) Beijing GTECH Computer Technology Company Ltd. (PRC) GTECH France S.A.R.L. (France) GTECH Gaming Subsidiary 2 Corporation GTECH Global Services Corporation Ltd. (Cyprus)(99.99% owned by GTECH) GTECH GmbH (Germany) GTECH Ireland Corporation GTECH Ireland Operations Limited (Ireland) GTECH Italia Srl (Italy) (90% owned by GTECH; 10% owned by GTFH) GTECH Italy Corporation GTECH Latin America Corporation GTECH LIT Corporation (Lithuania) GTECH Management P.I. Corporation GTECH Mexico S.A. de C.V. (Mexico) (99.99% owned by GTFH; 0.01% owned by GTLA) GTECH Nevada Corporation GTECH Northern Europe Corporation GTECH Rhode Island Corporation (RI) GTECH Slovakia Corporation GTECH South Africa Corporation GTECH Southern Africa (Pty) Ltd. (South Africa) GTECH Sweden AB (Sweden) GTECH Sweden Corporation GTECH Taiwan Corporation GTECH U.K. Limited (UK) GTECH U.K. Corporation GTECH Ukraine (Ukraine) (99% owned by GTECH Asia Corp., 1% owned by GTECH Management PI) GTECH Worldserv, Inc. GTECH Worldserv International, Inc. GTECH Worldwide Services Corporation LAC Corporation (RI) On-Line Lottery License and Lease B.V. (Netherlands) GTECH Avrasya Teknik Hizmetler ve Musavialik A.S. (Turkey) Oy GTECH Finland (Finland) Pro Olimpic S.R.L. (Romania) SB Industria E Comercio Ltd. (Brazil) (99.99% owned by GTECH; 0.01% owned by GTFH) Secure Gaming Technologies, LLC (67% owned by GTECH) Siam GTECH Company Limited (Thailand) Technology Risk Management Services, Inc. Uwin Corporation Uwin Network Operations Ltd. (Ireland) Uwin Ireland Operations Ltd. (Ireland) VideoSite, Incorporated Watson Land Company (RI) NOTES: 1. All references to "GTFH" shall mean GTECH Foreign Holdings Corporation. All references to "GTLA" shall mean GTECH Latin America Corporation. 2. Unless otherwise indicated, all subsidiaries listed are incorporated in the State of Delaware. 3. Unless otherwise indicated, the percentage of ownership of a subsidiary is 100%. -2- 4. For purposes of this list, the term "subsidiary" shall mean an entity in which GTECH Corporation maintains fifty percent (50%) or more ownership. 5. This list includes inactive entities that may be in the process of being dissolved. -3-