~~~~~~~~~~~~~~~~~~SPACE DEFENDER~~~~~~~~~~~~~~~~~~~ Press S to skip the intro. Arrow keys or WASD, space to shoot. Z spawns a UFO. It moves randomly around the screen. X spawns a starfighter. It points towards you forever and moves faster, but self-destructs when it crashes into you. C changes your weapon type from semiautomatic to automatic. You need to wait 5 seconds between changing weapons. Features zero-gravity, Atari-like graphics, and a a laser gun.