Exhibit 21.1 GTECH HOLDINGS CORPORATION SUBSIDIARIES GTECH Holdings Corporation > GTECH Reinsurance Company (Vermont) | v GTECH Corporation | v GTECH Corporation Subsidiaries Cam Galaxy Group Ltd. (UK) 40% | > Europrint Holdings | Ltd. (UK) JSJ Ltd. (UK) 60% | Data Transfer Systems, Inc. DataTrans Sp. z.o.o. (Poland) (52% effective control) Dreamport, Inc. > Dreamport International, Inc. 99% > Dreamport do Brasil Ltda. (Brazil) 1% GTFH > Dreamport Turfway LLC Dreamport Suffolk Corporation GameScape, Inc. (RI) GTECH Asia Corporation > GTECH Ukraine (Ukraine) (99% GTECH Asia Corp., 1% GTECH Management PI) | v Saga Communications Ukraine (Ukraine) (51% GTECH Ukraine, 24% GTECH Asia Corp) | v Lottery Equipment Company (Ukraine) (99.994% GTECH Asia Corp., 0.06% GTECH Australasia Corporation GTECH Brasil Ltda (Brazil) (99.75% GTECH Corp., 0.25% GTFH) GTECH Canada Computer Systems Corporation (Canada) GTECH Child Care Center (RI) GTECH Communicaciones Colombia Ltd. (Colombia) (99.99%) GTECH Computer Systems Sdn Bhd (Malaysia) GTECH Corporation (Utah) GTECH Eesti A.S. (Estonia) GTECH Espana Corporation GTECH Europe S.A. (Belgium) (99.99% GTECH Corp., 0.01% GTFH) 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 Mexico S.A. de C.V. (Mexico) (99.99% GTFH, 0.01% GTLA) GTECH Gaming Subsidiary 2 Corporation GTECH Global Services Corporation Ltd. (Cyprus) (99.99%) | > GTECH Lanka (Private) Ltd. (Sri Lanka) (99.9% GGSC & 0.1% GTECH Corp.) | > Inca Payments Limited (UK) (50% GGSC & 50% Radicall Limited) | > Spartacus Acquisition, Inc. (Canada) | > GTECH Sweden AB (Sweden) | > GTECH Ireland Operations Limited (Ireland) | > GTECH Far East Pte Ltd (Singapore) | > GTECH Eastern Europe Sp. z o.o. (Poland) | > Aitken Spence GTECH (Private) Limited (Sri Lanka) (50% GGSC & 50% Aitken Spence Corp. Finance Ltd.) | v GRYTEK Sp. z o.o. (Poland) | v G.I.C. Uslugi Finansowe Sp. z o.o. (Poland) (62.96% Grytek, 37.04% PolCard Holding S.A.R.L. (wholly owned by Innova Capital S.p. z o.o.)) | v PolCard S.A. (Poland) (99.67% G.I.C., 0.33% Union of Polish Banks) GTECH GmbH (Germany) GTECH Ireland Corporation GTECH Italia Srl (Italy) (90% GTECH Corp., 10% GTFH) GTECH Italy Corporation GTECH Latin America Corporation GTECH LIT Corporation (Lithuania) GTECH Management P.I. 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 Corporation GTECH U.K. Limited (UK) GTECH WaterPlace Park Company, LLC GTECH Worldserv, Inc. GTECH Worldserv International, Inc. GTECH Worldwide Services Corporation On-Line Lottery License and Lease B.V. (Netherlands) > GTECH Avrasya Teknik Hizmetler ve Musavialik A.S. (Turkey) Oy GTECH Finland (Finland) SB Industria E Comercio Ltd. (Brazil) (99.99% GTECH Corp., 0.01% GTFH) Siam GTECH Company Limited (Thailand) Simulti, LLC (99% GTECH Corp., 1% GTFH) Technology Risk Management Services, Inc. Uwin Corporation > Uwin Network Operations Ltd. (Ireland) | v Uwin Ireland Operations Ltd. (Ireland) VideoSite, Incorporated NOTES: 1. All references to "GTFH" shall mean GTECH Foreign Holdings Corporation. All references to "GTLA" shall mean GTECH Latin America Corporation. All references to "GGSC" shall mean GTECH Global Services Corporation Ltd. 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%. 4. For purposes of this list, the term "subsidiary" shall mean an entity in which GTECH Holdings Corporation or GTECH Corporation maintains fifty percent (50%) or more of ownership.