Great, but one major flaw...
I really love indestructo tank, Its one of my favorite NG games. BUT... I cant even describe how pissed off i get when i run out of fuel in the air. You should make it so if you run out of fuel and you are in the middle of a combo, when you land your combo your points are added. If you dont have enough points to level up, then you fail. If those points you just landed ARE enough to level up, then you still go on. If you just fix this I would, without a doubt, give you a 10. By the way, this is a very creative game, I've never seen a game like this! keep making more original games please!