So far i would say its diablo, i played more than any other game so yeah, but in more modern times it would be call of duty modern warfare 2 and soon to be 3

I've been playing Psyconauts recently, it's amazing. Probably one of my favorite games ever.

Grand theft auto 4 by far, I just love it.Everything about it!

For PC: World of Warcraft, Toribash, and any other MMORPG.
Wii: Toribash and just about the rest of the games for it.

Borderlands Borderlands Borderlands Borderlands
derp derp derp, Oh and The Halo series was great

San Andreas : Multiplayer

Brings back awesome memories, lol that was the best for a long time, trying to fly a plane with the other guy standing on the wing lmao

Super Mario world to super nitendo and mega man x

Borderlands, I've never played one game as much as this.

I guess GTA IV is the best game I've ever played, it's just awesome!