This is a lot harder than I expected apparently...
1. Capcom (Resident Evil, Street Fighter, Devil May Cry, Okami, Dead Rising)
2. Square Enix (Final Fantasy Series, Valkyrie Profile, Vagrant Story, Dragon Quest)
3. Nintendo (Mario, Zelda, Metroid, Mario Kart, Smash Bros.)
4. Blizzard (Warcraft, World of Warcraft, Starcraft)
5. Sony (God of War, Shadow of the Colossus, Ico)
6. Rockstar (GTA, Manhunt, Red Dead Revolver)
7. Konami (Metal Gear, Castlevania)
8. Insomniac (Ratchet and Clank, Resistance)
9. Epic (Unreal, Gears of War)
10. Namco (Tekken, Soul Calibur)
11. Tecmo (Ninja Gaiden, DOA)
12. Bethesda (Elder Scrolls, Fallout)
13. Level 5 (Dark Cloud, Dragon Quest VIII, Jeanne D'Arc, White Knight Story)
14. Valve (Half Life, Counterstrike, Team Fortress, Left 4 Dead)
15. Q? Entertainment (Lumines, Every Extend Extra, Rez by technicality, Meteos)
16. Grasshopper (Killer 7, No More Heroes)
Thanks to Blacksaber for the sig!
