Microbes is a clone of the arcade hit Asteroids. It is a little unique in that it requires two joysticks... One controls the spaceship's direction itself, while the other controls the direction of the gun on your spaceship. This game was originally sold directly by SPECTRAL ASSOCIATES as Color Meteoroids in 1981, but was later pulled by Spectral, redone in cartridge format, and sold through Radio Shack/Tandy.