Halo is a kick as first person shooter that rules over all. This game is the only reason you need to buy an x-box if you're still wondering if you should get one or not. Playing on the single player mission mode at the legendary(most difficult) setting will keep you busy for months. Then you get an awesome multi-player game that will do two things: A. Kick your freakin A$$ and B. Keep you playing for ever!(or until the sequel comes out)