Dear Customer,
After careful consideration of our long-term business direction, geekmaxi.com will be discontinuing operations as an online store. As of August 21, 2026, we will no longer be accepting new orders.
Looking ahead, we are working with a number of established retail partners so that our customers can continue to find the products they've come to know from us. More details will be made available on our homepage.
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ROBOTIME LG504 fortress marble run kit is a mechanical gear 3D wooden puzzle based on great human engineering. Its design combines the beauty of science and machines, shaking the handle, you can watch the marbles climbing to the top again and again!
Featuring multiple gears, zigzagging tracks, and the design of the fortress, it's both intricate and beautiful.
It is good for learning principles of Science, Technology, Engineering, and Mathematics(STEM). Also a great gift for family and friends.








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