Quite a complicated game, you are stranded with your damaged spacecraft on some planet and you have to find four keys before you can use a power station to repair/recharge your ship, you can get the keys in any order you wish. One key sits at the middle left guarded by two mechanical arms which move from left to right, they have to be avoided by jumping over them. Another key at the bottom left is guarded by a swinging power line, which occasionally fires electricity. Another key at the middle right is guarded by a monster. The final key is placed at the bottom right and a lurking monster will instantly kill you when he jumps out one of the three holes: you have to shoot him before he does. The key is behind a wall which must be shot as well. After that you can open a device at the middle right enabling you to fly away, but only to crash again and have the search for keys start all over again. The elevators in the middle are also inhabited by a monster in later levels. This game will keep you busy for a while and is incredibly difficult but fun to play.