Well there are two versions, one is the battle of great Britian bundle pack if I'm right, and the other is the basic game. Now the bundle pack unlocks 10-15 missions (I forget) and gives you a couple planes if you complete the missions. So it depends on why your playing, if you want campain get the wargames and great britian, and maybe the dogfights. However, once you get farther in the campain it is a pain in the ass and possible impossible unless you have multiplayer bought for it. I have the battle of great britian, the Zero III and I mainly play online and it's fun. Only thing I don't like is if I shift positions when sitting I need to recalibrate.