Experience the thrill of watching marbles cascade through your own gravity-defying creations with the Ravensburger GraviTrax Starter Set. Ideal for STEM enthusiasts aged 8 and up, this set includes 100 high-quality plastic pieces, allowing for the construction of unique architectural structures that harness the power of physics. The GraviTrax Builder Set is filled with innovative features, including a battery-powered system that brings your builds to life, and the ability to create custom designs with the included bulk lot of pieces. Whether you're a gamer or a Robotech fan, the Gray Boy character pieces add a personal touch to your marble run adventures.
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