This game... oh, this game.
Very rarely do I find a game that I consider I might actually play -Forever- (or at least until I am no longer able to). This is one of those games. I will play it, revisit it, time and time again, until I can't anymore. It's that epic.
True to it's rogue-like nature, there is very little hand-holding in this game. There isn't -too- much to figure out for yourself, but there is definitely enough to keep things interesting. The turn-based combat is refreshing, as is the way you can use items (clicking on an enemy while holding a bolt from your inventory will shoot them with said bolt).
The base stats are a a refreshing new twist, with stats not seen in any other games. Of course, you've got about a million ways to start your character depending on what type of play-style you're going through. Base stats serve only to enhance secondary stats, which are used throughout most of the game. Nothing big to figure out, but you could definitely be a min/maxer if you wanted to be. I prefer the role-play / lore route.
Perma-death mode is the only mode I'll ever play. As your characters die, your name, level, and score all get added to a giant headstone which shows all of your previous deaths as well. Making it exceedingly interesting to see just how much farther you can push into the dreaded Dungeons of Dredmor.
Over all, I HIGHLY recommend this game. I feel like it is one out of over 150 titles that I own that I got much, much more than I paid for. If you pass this one up, you're missing out. Buy it. Buy it now.