This game, Perplexus (perplexus.net), you play all by yourself. It’s a marble maze inside a clear plastic sphere. There are twists and turns. This will keep you entertained for a long time.

The World’s Smallest Playable Perplexus is actually a bit of a misnomer because ‘playable’ implies you’re going to have an enjoyable time with it.

Remember those wooden Labyrinth games where you twisted a couple of knobs to manoeuvre a metal ball through a 2D maze? Well if you were to add a third dimension you’d end up with these Perplexus ...

Michael McGinnis, a toy inventor from Ottawa, shows off his Perplexus 3D marble maze game. The toy was recently named by Time magazine as one of the top '15 smartest toys for young geniuses ...

Perplexus is a complex re-imagining of a two-dimensional ball-in-a-maze game. It includes intricate obstacles inside a range of plastic spheres, forcing players to work their way through a 3D maze.