This puzzle is a small 3D labyrinth. The puzzle has a chain so it is easy to put hang for example in the backpack or even to a keychain. A brainteaser, a head wrecker and great to take on your journeys. The idea is to guide the metal ball through the 3D labyrinth with slopes, platforms, spirals and more. This is a mini version of Eureka Amaze UFO Game, its size is 8cm diamater.