X0101 EFFECT 33 LIVE 2010-04-29 14:00:00

S-4

0001323921 Scientific Games International, Inc. 333-165490 0001323916 SG Racing, Inc. 333-165490-09 0001442383 Trackplay LLC 333-165490-08 0000750004 SCIENTIFIC GAMES CORP 333-165490-07 0001323936 Autotote Enterprises, Inc. 333-165490-06 0001323935 Autotote Gaming, Inc. 333-165490-05 0001323931 MDI Entertainment, LLC 333-165490-04 0001442385 Scientific Games Products Inc 333-165490-03 0001323918 Scientific Games Racing, LLC 333-165490-02 0001442384 Scientific Games SA Inc 333-165490-01