Chainshooter Free 1.1 (iOS)

An alien invasion threatens our planet, and it's up to you to pilot the only ship with the power to stop them. Take command of the U.S.S. PEMDAS using math skills and various weapons. Master the order of operations and defeat the alien Kith. Our planet is endanger of invasion! It's time to fly!Set the game to match your ability and make your way through waves of enemy Kith while learning the art of order of operations.Free Full Version with Ad Support