If you like RTS's: Starcraft II, Red Alert, Age of Empires
FPS's: Crysis, Left 4 Dead, Half-Life, Counter-Strike,Team Fortress 2
RPG's: Mass Effect, Fallout 3, Dragon Age, Elder Scrolls Oblivion.
Action/Adventure: Batman Arkham Asylum, Grand Theft Auto., Just Cause 2
Platformers: Super Meat Boy, Gish, Psychonauts
Enjoy.