If you think you’re going to need some practice killing aliens before they invade the earth, you might want to pick up this game. It comes complete with three menacing looking aliens and one gun for you. Just before they attempt to shoot and kill you they shout. So if you’re fast enough you can kill the alien before it kills you. If you manage to hit them, they will scream out in pain, just before they die. Now hopefully all aliens will act in such a predictable manner. You can pick up the game on LazyBoneUK for $43.39 or £21.99.