A bleak, pockmarked moon on the gas planet Oovo, this asteroid world is a prison colony and a labor camp. Deep inside Oovo IV, the inmates dig for ore, which is transported to the loading docks on the surface by means of zero gravity vacuum tunnels. You're race through a maze of these tunnels, and you may find yourself upside down on more than one occasion. Avoid the rotating gates and try to stay on course.