Been playing this at night in my spare time from my hotel. Runs really well, on my MBP, with most settings on high and AA turned on.
Torchlight - Runic Games
Fun little game, kind of a D2 clone, definitely worth $20, and it's available on Steam.
Torchlight is a great game
They are working on a MMO version.....
Another good game in the same vein is Mythos . I was in the old beta - it got scrapped (company had cash problems) but the game is back in productions