Invader Fall

Using the joystick or keyboard, you must shoot the invaders that fall down from the sky before they touch the ground. There can be a maximum of four invaders on screen at once, and as you progress through the game, the invaders get faster. Occasionally, a UFO appears and tries to shoot your ship, and shooting it before it does awards you with bonus points. The game ends when a UFO manages to kill you or one of the invaders touches the ground.