1.Nintendo
2.Electronic Arts
3.Activision
4.Ubisoft
5.Sony Computer Entertainment
6.Take-Two Interactive - GTA Publisher & Parent Company Of Rockstar Games
7.Sega Sammy Holdings
8.THQ
9.Microsoft Game Studios
10.Square Enix
11.Konami
12.Vivendi Games
13.Namco Bandai Games
14.Capcom
15.NCsoft
16.Disney Interactive Studios - Remember That Their Only Developed Game For Now Is Pure...
17.Lucasarts
18.Codemasters
19.SCi/Eidos Interactive
20.Midway