If you don't have any hang-ups with wandering around in dark places, and you're looking for a deep and involving role-playing game, then you'd be doing yourself a favor by checking out Arx Fatalis.

With Arx Fatalis, Arkane Studios intended to pay homage to the classic early-'90s first-person role-playing game Ultima Underworld, but it has done much more than just imitate that game.