Oblivion, I probably end up starting a new game every few month are so... at least until Skyrim comes out.
Also Half-Life 2 (and all the episodes and Portal), game making at it's finest right there.
EDIT: I'm not really counting multiplayer games cuz those are meant to be continually played over again. But L4D and TF2 would most definitely be on that list.
Also Half-Life 2 (and all the episodes and Portal), game making at it's finest right there.
EDIT: I'm not really counting multiplayer games cuz those are meant to be continually played over again. But L4D and TF2 would most definitely be on that list.