Quadrilla Stack Track Builder Set

The Quadrilla Stack Track Builder Set packs a full track inside its own storage bucket, and the bucket itself becomes part of the build. Kids design their own layout, no fixed assembly required, then send marbles rolling through the ramps, twists, and drops they've put together. The bucket lid flips over into a second, reversible marble track on its own. Skill-Building Highlights Hands-on STEAM basics: building supports and testing ramp angles gives kids a physical, trial-and-error introduction to potential energy, momentum, and gravity. Open-ended building: with no fixed assembly, every layout is a new problem to solve, which keeps spatial thinking and planning in play instead of repeating one setup. Optional guided challenges: the free Hape Quadrilla app adds step-by-step build challenges for kids who want direction instead of a blank slate. Expandable system: compatible with other Hape Quadrilla marble run sets, so the same track can grow into something bigger over time. What's Included Wooden marble run components: ramps, twists, and drops 1 storage bucket that doubles as part of the track 1 reversible bucket lid marble track Printed instructions Where This Works Best Family game night Race to build the track first or just watch the marbles roll together, either way it's a shared activity rather than a toy one kid plays with alone. Open-ended building play Good fit for kids who'd rather redesign a track than run a fixed set the same way every time, since there's no single correct layout to build. Growing a collection Compatible with other Hape Quadrilla marble run sets, so it's a reasonable starting gift for a family likely to add more sets later. Specifications & Certifications • Ages: 4+ years • Item Weight: 8.8 lbs • Material: Wood • Assembly: build your own layout • Compatibility: Works with other Hape Quadrilla Marble Run sets. Not compatible with Hape Marble Run E1100, E1101, or E1102.