I assume that you are speaking of video games, otherwise Magic: The Gathering would top the list. Chess and poker would also be there. But for video games:

Diablo 2
World of Warcraft
Goldeneye
Ecco the Dolphin
Divine Divinity
Minesweeper
Sonic

The question is not, Can they reason? nor, Can they talk? but, Can they suffer?
~Jeremy Bentham