The Hape Quadrilla wooden marble run kits inspire builders to think imaginatively and create endless high-speed raceways.
The app lays step by step instructions, offers varied challenges & encourages builders to build endless structures and mazes and share what they did with other Quadrilla lovers.
The app lays step by step instructions, offers varied challenges & encourages builders to build endless structures and mazes and share what they did with other Quadrilla lovers.
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