O.K. . The single player game is easy. You can beat that in an hour. But you get hooked. I played each level probably 1000 times before i finally started playing multiplayer. I played it so much my mom made me stop for a while. But does that stop me?! No way!! I still play it all the time. The only bad part of the game is the way hard to understand  campaign editor. Im an expert at the game and im barely a rookie at campaign editor. Everything is easy smeesy lemon peezy until you try triggers. But lets not talk about that. Lets just say its one of those games that you just remember. Its also HAS to be one of the best games ever created.