Activision Activision Blizzard Activision Publishing Activison Blizzard Ak Tronic Astragon Codemasters Ejay Electronic Arts Eurovideo Bildprogramm F+f Distribution Gmbh Guitar Hero Koch Media Gmbh Mc Records Red Octane Rondomedia S.a.d. Gmbh Sony Thq Ubi Soft Ubisoft Gmbh Vivendi