Roll the steel ball to the START space and twist the Rubik's Perplexus to align the tracks and manoeuvre the ball through the inner maze. Roll past increasing numbers along the track on your way to the finish line without falling off the track. Put your skills to the test. Complete the Maze, Complete the Cube. The Rubik's Perplexus Fusion helps build problem-solving skills through challenging and engaging gameplay, and is the perfect size for on-the-go fun.