There's a lot to love and a lot to hate in Arx. It's incredibly immersive and there's a lot you can do, but I'd honestly say the chance that anyone will finish it is pretty low. Some of the things you need are almost impossible to find without a walkthrough, and 'The Annoying Dog Level' will kill the enthusiasm of all but the most dedicated gamers.
The spell casting system is the best I've seen in any game. It really feels like you are casting spells, rather than just pressing buttons and hoping you're fast enough. The cookery system is great and the underground societies are well developed.
I've played through large chunks of it many times. But I've never finished it. It's fun until the 'Annoying Dog Level'.
Worth getting cheap if you can, though, just to mess about with.
