User Summary You control a man in a spacesuit with a jetpack, manouvering him through a maze of tunnels. You have an hour to score as many points as possible. The tunnels are full of monsters, who move either randomly or in a programmed pattern. If they touch you, you lose time and when the timer reaches zero, the game ends. There are also items to pick up, giving you points and in one case, increasing your available time again.