[Radek]

I haven't seen the game but I've read some caveats (well, they didn't call it caveats, LOL)
1. Fishtank. If the game is alike to Evil Islands somehow then it need not be as good as it is told. Evil Islands came with some splendid ideas: item maker and spell maker where you can not only create new items and spells but also disassemble items and spells(!) to their components and use them for creating other items. Fantastic! No more "completely useless" items! But that's all what I liked on the game.
2. Hardware requirements. I've heard that Arx Fatalis is another Morrowind. If it is the case, then forget Arx Fatalis if you have PIII 550 or a similar computer.
I'd like to emphasize that I could be wrong completely. The info above is a hearsay, not an experience.