First thing first: HALO is simply a successful, horny and extremely cool designed Shooter !! I've even both (all 3) parts for the XBox, on which they are simply good. Most recently, I've also the PC version. Unfortunately, it was unplayable jerky with me at the beginning, which is quite annoyed. Only after I had installed the patch to version 1.07, it was normal. To the game itself: The PC Umsetztung is identical with the single player game for XBox version, only in multiplayer mode, the two versions differ. On the computer there are more levels and a few extra weapons (flamethrower ect.), But no genius co-op, too bad. Well, more is not really to say. I can only every PC gamers of any XBox has recommend this game highly. XBox players remain but would prefer in the console version. 4/5 stars because the Kompitablilitätsproblemen in unpatched version, and the lack of co-op mode. PS: The Halo books are also cool!