Open-ended construction, bright colors, and 94 colorful high-quality pieces make the Quadrilla Cliffhnager marble run brilliant (as the Brits say) for young builders.
Our testers were busy for hours on end, creating different combinations to race the marbles down the tower. They strategized to ensure solid construction, experimented with a variety of configurations, concentrated on what worked and what didn’t, carefully thought through the problems, and congratulated each other with high-fives when their solutions worked. Fun and learning all the way.
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