Alien Invasion

Use the mouse to move the tank. Use the mouse button to shoot. Shoot the UFOs before they can land on Earth. Try hitting more than one UFO with the same shot. Try to hit the fastest flyinq UFOs first. You lose a life every time a UFO successfully lands on Earth. You qain an extra life each time you destroy 50 UFOs. A dyinq alien race is trying to land on Earth in search of help. However, the President has ordered the army to destroy them all. You have your orders. Try to shoot the invading aliens before they land!