Wonderful dungeon-crawler with incredible amounts of replayability. Adds some new touches like a persistent pet that you can teach spells, have carry loot for you, and even return to town and sell said loot for you. One of the most addictive games of the last 5 years.
Beautifully produced, very Diablo-like game that swipes most of Blizzard's mechanics and lays over them a more attractive circa 2010 (as opposed to circa 2000) veneer. And adds a little, besides. Your next best bet until either Torchlight 2, or Diablo III, shows up next.