The 134-piece Quadrilla Vertigo Wooden Marble Run includes blocks and accessories such as three twisting funnels, one seesaw, and accelerators for designing dynamic marble racetracks. Suitable for ages 4 and up, this set encourages creative building with easy-to-stack wooden pieces that can be rearranged quickly using the included Idea Booklet or the free Quadrilla app. Each piece is precision-crafted for small hands, allowing children to construct spiraling marble runs while developing STEAM skills. The set works best on a hard, flat surface and is compatible with other Quadrilla sets. Winner of the Oppenheim Platinum Seal, Quadrilla promotes spatial reasoning, problem-solving, and teamwork. The set features straightaway rails, spiral funnels, and a seesaw for engaging play. Made with FSC-certified wood and finished with non-toxic, child-safe paints, Hape toys meet high safety and quality standards. Ideal for ages 4+, this STEM toy fosters 3D thinking and endless building possibilities.