{"product_id":"future-city-marble-run-mechanical-3d-puzzle","title":"Future City Marble Run Mechanical 3D Puzzle","description":"\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eFuture City Marble Run Mechanical 3D Puzzle brings hands-on engineering to life with a futuristic cityscape filled with winding tracks, gears, tunnels, and speeding marbles. Build the 140-piece wooden model, then activate the marble run with its lift and dynamic lighting to watch marbles travel through the interconnected city. The design combines mechanical movement, architecture, and gravity-driven motion into an engaging STEM-inspired building project.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eDesigned for builders, marble-run fans, and curious minds, this mechanical puzzle offers a satisfying construction experience while demonstrating concepts such as gravity, motion, mechanical systems, and engineering design.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eWhy You’ll Love This:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eIncludes 140 pieces for building a detailed futuristic city marble run\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFeatures a powered lift that carries marbles through the track for continuous movement\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIncludes dynamic lighting activated by a touch-sensitive switch\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInterlocking wooden construction requires no glue\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTakes approximately 90 minutes to assemble and is recommended for ages 14+\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFinished model measures approximately 7 x 3 x 9 inches\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eBuild a miniature futuristic city and watch engineering, motion, and design come together in a marble run that's as fascinating to watch as it is to build.\u003c\/span\u003e\u003c\/p\u003e","brand":"Robotime","offers":[{"title":"Default Title","offer_id":50501084315841,"sku":"8MR02S","price":89.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0074\/0638\/7247\/files\/CopyofNewStoreSite-BackgroundRemover-2026-08-14T173844.313.png?v=1786747129","url":"https:\/\/store.smm.org\/products\/future-city-marble-run-mechanical-3d-puzzle","provider":"The Science Museum of Minnesota","version":"1.0","type":"link"}