Very disorganized game. There are dozens of different areas to access and modes to try but no common sense in the organization. The real problem is that you can progress to around level 100 to 120 without spending money. But to get level 2 planes you have to start paying to play. It's not worth spending money on this. You can of course earn some rewards by watching countless commercials, but even wasting hours doing that you can get next level planes.