Marble Run Gearball Scramble ROKR - Games WholesaleROKR Gear Ball Challenge EGC01 is an interactive DIY marble run 3D wooden puzzle designed with the silhouette of a game controller and a bold mechanical factory style. Rather than being a static display model, it combines hands on assembly with real time control, creating a fast paced tabletop challenge full of movement and strategy. Once assembled, players guide the metal ball through six dynamic stages using knobs, levers, dials, and track switches.