Cheatwell Games 81007 Engenius Contraptions Perpetual Motion Marble Run

Product DescriptionInstantly captivating, this EnGenius contraption is a flat-pack marble run Made from plywood that you assemble yourself. Powered by an electric motor, The marbles are raised to the top of the lift...First descending down the spiral then down the zig-zag track...Then the spiral, then the zig-zag...In a mesmerising perpetual motion. Helps to achieve those important stem objecti...