Holey Moley is a Challenge Puzzle where players must solve 3 levels to complete the trigger requirement. It is re playable, because every time is different. Players roll a steel ball along a narrow pathway on 3 different levels to reach the targets. But it's not that easy... each player can only control 1 direction. i.e. North, South, East or West. 
This game arrives completely assembled and will fit through a standard doorway. Just hook up your own trigger result; a door lock, maglock, lighting etc...