The Cyclone is the largest Quadrilla set. The Hape Quadrilla marble run is a sophisticated wooden toy that encourages children's creativity with its modular system. The track is made up of different blocks with different interiors and connecting rails. The marbles fall through the wooden blocks and then visibly roll along the connecting rails. Download the Hape Quadrilla app with numerous step-by-step instructions. Build fantastic tracks that offer new challenges and encourage your children's imagination. Share the joy of customised marble runs and share your own with other Quadrilla fans.