I'm really interested in playing Nehrim but I don't own Oblivion for PC. I can borrow the disc from a friend of mine but I can't keep it forever.
My question is, does the Oblivion disc need to be used to play Nehrim or just to install it? I really want to play this game (it looks spectacular) but I won't be able to keep the disc to Oblivion for a very long time.