Gecko Run: Marble Run Challenge Edition Unicorns These high-speed racers light up

These high-speed racers light up the track with thrilling head-to-head battles

engineering

The raccoons move along the paths to hide behind obstacles until the gardener shouts

STEM-focused fun

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Gecko Run: Marble Run Challenge Edition Unicorns These high-speed racers light upGame on! The Gecko Run Challenge Edition includes everything you need to challenge yourself or others to a marble run building competition. With 32 challenge cards, two rapid fire launchers, and enough parts for two kids (or two teams) to build their vertical marble runs at the same time, this set turns Gecko Run into a fun, thrilling engineering game. The open ended challenges set rules such as using only the specified parts in an allotted amount of