Number of pieces
Assembly time
Difficulty level
Assembled size
Industrial Cityscape Model
The Marble Night City is a complex 3D wooden puzzle featuring a dark-tinted industrial aesthetic. Clear acrylic panels contrast with the engineered wood, showcasing multiple interlocking tracks where steel balls navigate steep drops, spirals, and sharp turns.
Detailed Assembly Process
Constructing this 294-piece model provides a deep sense of focus and stress relief. The laser-cut parts fit seamlessly together, requiring about seven hours of dedicated building. Designed for ages 14 and up, it offers a challenging hands-on project.
Infinite Cycle Mechanism
Turn the yellow hand crank to activate the central gear transmission. This mechanical system continuously lifts the 10 included steel balls to the top, releasing them through various pathways, including a large funnel and stepped tracks, creating a fascinating endless loop.
Unique Mechanical Decor
Once completed, the 324x214x228 mm structure serves as a captivating kinetic sculpture for any modern interior. It makes an exceptional birthday gift for him or anyone who appreciates detailed mechanics, blending raw engineering with visually appealing tabletop design.
Secure Branded Packaging
The kit arrives in a sturdy, visually appealing ROKR box that clearly illustrates the completed model and its internal systems. Inside, you will find neatly organized wooden sheets and all necessary components, ensuring the recipient receives a premium unboxing experience.
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