You know you're going to buy the game no matter what we say, admit it. <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />
The environments are not randomly generated, and the replay value comes from wanting to find some detail you missed the first time through, and from the wide range of ways to build your character.
You Absolutely must get this game! <img src="/ubbthreads/images/graemlins/up.gif" alt="" />