I second Risen. It's basically Gothic 2 with better graphics. Be prepared for a somewhat awkward combat system that you'll eventually get used to (hopefully). Also, the first few hours of the game can be quite challenging, mostly due to the fact that in the beginning you're so weak that even a simple wolf will tear you a new one. At the same time though, it's even more satisfying when you do get better gear. In short, it's exactly like Gothic.