Oblivion, Portal, Fallout 3, Titan quest: Immortal throne All on the PC.
I'm more for the Single player games then online games because they give me something to pass the new & you see new content unlike many multiplayer games and have mods & addons so you can have even MORE content.
the best game is Dungeon Keeper it's just an awesome game because you can torture, kill and be the bad guy but my most favorite newest game is Fallout 3 and Halo 3
Diablo II: Lord of Destruction... Lots of items, lots of good and balanced skills... 7 great Classes, good Story... There is no negative aspect, I think!