Torchlight is essentially, for lack of better description, a very similar game to Diablo. You pick one of three classes, crawl through dungeons, click on enemies to kill them, and go through huge piles of randomly dropped loot, rinse and repeat with each level up. So those familiar to the Action RPG genre will find themselves in familiar territory. But the formula does everything so damn well that it's just tough to put down, with a clever world and engaging mechanics. It actually brings quite a few things to the table!