Futuristic Theme With Multi-Tier Track Design
The Marble Night City features a complex, layered maze in a compact 12.8 × 8.4 × 9 inches (32.5 × 21.4 × 22.8 cm) assembled size, making it perfect for desks or shelves without taking up too much space.
Gravity-Powered Marble Motion
No electricity is needed, as gravity and a hand crank control the pace to send steel balls racing through mechanically precise tracks that wind across the city.
Special Wood Coloring Application
A charcoal gray wood grain dip-dye and metallic screen-printing technique provides a deep, metal-like texture, and a high-transparency acrylic structure helps you keep track of the marbles.
4-Star Difficulty Build
With 294 precisely cut pieces, the model uses a mortise-and-tenon joint system instead of glue, creating a sturdy and durable build. It offers a highly rewarding challenge that sharpens focus and enhances mechanical knowledge.
Engaging, STEAM-Rich Play Experience
Educational and entertaining, the Marble Night City allows users to learn while playing by enhancing knowledge of mechanics, gear transmission, gravity, and spatial dynamics.
Extended Universe Available
A link pack allows you to connect the Marble Night City with the Marble Spaceport, creating a larger, motor-driven network lit by blue LED strips for even bigger marble run adventures.
Each ROKR kit includes a printed instruction manual. If yours is lost or damaged, you can download the digital version below.
Q: What if some parts are broken or lost?
A: We offer part replacement service. Please click here to learn more about how to apply for it.
Q: What should I do if I encounter assembly issues?
A: If you encounter assembly issues, we have dedicated customer service to assist you. Email: service@robotime.com
Q: Can it be electric?
A: The official version only supports hand crank. If you are interested, you can try to modify it yourself.
Q: What size bearing/marbles are these?
A: They are 11mm







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