Nice game but it needs still to be worked on. AI can cheat all it wants as the terrain doesen't effect them. Also whats the deal with drowning to water after some 1½ sec. Also the respawn is pretty unaccurate.
Has some glitches.
For the 3rd time during the 3rd level, i have lost the ability to control the planes.
I can only watch them land and eventually crash to another recently arrived plane.
5th stage boss easiest so far, didn't have to move an inch and won :P
Also the game does have some small glitches but nothing that would dramatically stop you from enjoying the game.