I already bought it for my xbox when it was first coming out, episode by episode. But Now I want to play it on my PC, mainly so I can have my friends play it and I can see what decisions they make. I am traveling to see a friend and dont want to take my xbox. If I buy it for my computer will it come with a code like most PC games and programs that will allow it to be played on two or three computers? Or will it only be able to play on One?