Product Description

This is the Robotime ROKR Series Marble Squad Trapdoors Marble Run 3D Wooden Puzzle. This is marble run set that will definitely surprise you. Build this 3D wooden puzzle with your hands and watch the marbles run smoothly through those trapdoors. All mechanical-driven with no battery needed.

Robotime ROKR Marble Squad Trapdoors is a mechanical gear 3D wooden puzzle based on amazing human engineering. Its design combines the beauty of science and machines, involving so many small gadgets. Build the set and crank the handle, watch marbles run crazy down each trapdoor, slope, and twisting turn. It will bring you a super fun building & playing experience.

Age: 14+
Material: Metal Ball, Wood
Assembly Time: 6 Hours
Difficulty: 4/5