Build gravity-defying marble runs without tools or permanent damage. This innovative system uses flexible tracks and reusable nano-adhesive pads to stick securely to smooth surfaces, then peel away cleanly. Design endless configurations to explore physics, engineering, and problem-solving—all with over 60 pieces including tracks, marbles, levers, and a funnel. Made from renewable materials. Award-winning: TIME's Best Inventions 2024, Toy of the Year Finalist, and multiple play award winner.
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