{"title":"Marble Runs","description":"Marble runs turn self-assembly into a 3D track: build the course, then send the balls through curves, drops, and other sections. Designs vary widely in difficulty, build time, operating style, and finished size from one model to another.","products":[{"product_id":"gear-ball-challenge-mechanical-3d-wooden-puzzle","title":"Gear Ball Challenge Mechanical 3D Wooden Puzzle","description":"Gear Ball Challenge by Rokr operates as an intricate 3D wooden puzzle and mechanical marble run. Build a dynamic tabletop game using 653 precise pieces for engaging entertainment.","brand":"Rokr","offers":[{"title":"Default Title","offer_id":53382444089672,"sku":"EGC01","price":189.0,"currency_code":"PLN","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7298\/7976\/files\/EGC01.webp?v=1782401538"},{"product_id":"the-future-city-marble-run-mechanical-3d-puzzle","title":"The Future City Marble Run Mechanical 3D Puzzle","description":"Rokr Future City is a 140-piece marble run and mechanical 3D puzzle. Built from ABS and PC, it delivers dynamic LED lighting and complex multi-level tracks.","brand":"Rokr","offers":[{"title":"Default Title","offer_id":53382446088520,"sku":"MR02S","price":273.0,"currency_code":"PLN","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7298\/7976\/files\/MR02S.webp?v=1782401593"},{"product_id":"marble-night-city-marble-run-3d-wooden-puzzle","title":"Marble Night City Marble Run 3D Wooden Puzzle","description":"Rokr Marble Night City is a challenging mechanical 3D wooden puzzle. Construct a complex marble run driven by a hand crank, guiding steel balls through intricate tracks and spiral funnels.","brand":"Rokr","offers":[{"title":"Default Title","offer_id":53429625094472,"sku":"LGA01","price":227.0,"currency_code":"PLN","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7298\/7976\/files\/LGA01_3.webp?v=1784648010"},{"product_id":"alchemy-city-marble-run-mechanical-3d-puzzle","title":"Alchemy City Marble Run Mechanical 3D Puzzle","description":"Alchemy City is a 247-piece ROKR mechanical 3D puzzle from the Marble’s Parallel World series, rated medium difficulty with an estimated two-hour build. Once assembled, it measures 180 × 77 × 231 mm. This construction kit combines a powered marble run, moving mechanisms, and integrated LED lighting in a compact vertical format.","brand":"Rokr","offers":[{"title":"Default Title","offer_id":53429630206280,"sku":"MR04S","price":282.0,"currency_code":"PLN","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7298\/7976\/files\/MR04S.webp?v=1788843096"},{"product_id":"marble-travel-london-marble-run-3d-wooden-puzzle","title":"Marble Travel - London Marble Run 3D Wooden Puzzle","description":"Marble Travel - London is a 431-piece 3D wooden puzzle that combines a London city model with a working marble run. The completed build uses moving mechanical parts, four marble routes, LED lighting, and recognizable landmark-inspired structures. Assembly takes about five hours, with a ★★★★☆ difficulty level and a finished size of 225 × 155 × 235 mm.","brand":"Rokr","offers":[{"title":"Default Title","offer_id":53429631222088,"sku":"EGB01","price":252.0,"currency_code":"PLN","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7298\/7976\/files\/EGB01.webp?v=1783349056"},{"product_id":"hip-hop-street-marble-run-mechanical-3d-puzzle","title":"Hip-Hop Street Marble Run Mechanical 3D Puzzle","description":"Hip-Hop Street is a 134-piece ROKR 3D puzzle from the Marble’s Parallel World series. This medium-difficulty DIY model combines a working marble run with moving parts and LED lighting. Once assembled, the powered lift keeps the marbles cycling through the track, while the street-themed module serves as the finished display.","brand":"Rokr","offers":[{"title":"Default Title","offer_id":53429631287624,"sku":"MR03S","price":294.0,"currency_code":"PLN","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7298\/7976\/files\/MR03S.webp?v=1788854168"},{"product_id":"the-last-city-marble-run-mechanical-3d-puzzle","title":"The Last City Marble Run Mechanical 3D Puzzle","description":"The Last City is a Rokr 3D puzzle that builds into a working marble run. The model kit features a miniature street above a factory scene with pipes, traffic signs, and a small fan. Its layered track sits inside a black display frame with ribbed sides.","brand":"Rokr","offers":[{"title":"Default Title","offer_id":53429634761032,"sku":"MR01S","price":273.0,"currency_code":"PLN","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7298\/7976\/files\/MR01S.webp?v=1789025244"},{"product_id":"marble-spaceport-marble-run-3d-wooden-puzzle","title":"Marble Spaceport Marble Run 3D Wooden Puzzle","description":"Marble Spaceport is a working marble run you assemble from a Rokr 3D wooden puzzle kit. It comes with 10 steel balls and combines plywood, metal, and clear plastic parts. Part of the Infinite Cycle series, the model returns the balls to the start for another pass.","brand":"Rokr","offers":[{"title":"Default Title","offer_id":53429635252552,"sku":"LGC01","price":252.0,"currency_code":"PLN","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7298\/7976\/files\/LGC01.webp?v=1783349580"},{"product_id":"mars-outpost-marble-run-mechanical-3d-puzzle","title":"Mars Outpost Marble Run Mechanical 3D Puzzle","description":"Mars Outpost is a ROKR Parallel World 3D Puzzle with a compact, vertical Mars-base layout. The 194-piece construction kit is rated medium difficulty and takes about two hours to assemble. Finished size is 180 × 77 × 231 mm, giving the completed model a relatively narrow footprint for a desk, shelf, or display cabinet.","brand":"Rokr","offers":[{"title":"Default Title","offer_id":53976511480136,"sku":"MR05S","price":281.0,"currency_code":"PLN","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7298\/7976\/files\/MR05S.webp?v=1788600712"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7298\/7976\/collections\/1-banner-marble-runs.webp?v=1787915552","url":"https:\/\/myhobby.day\/de-de\/collections\/marble-runs.oembed","provider":"My Hobby Day","version":"1.0","type":"link"}