If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Survive waves of invading hostile helicopters! Shoot them with your cannon and try to make them rotate until they explode. Let them knock into each other to create massive chain reactions of explosions! Earn money with each exploding helicopter to repair and upgrade your cannon. Shoot the rag doll style soldiers to earn more money. Don't let the helicopters escape or you will lose lives.
This game is played with mouse only.