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    • Gecko Run: Set of 7 Replacement Marbles STEM Thames & Kosmos

    Gecko Run: Set of 7 Replacement Marbles

    • STEM
    • Physics
    • Ages 8+

    Lost your marbles? Get seven metal replacements for Gecko Run.

    $4.95

    Lost your marbles? Get more! This pack includes seven metal replacement marbles for the Gecko Run marble run system, so a few strays or scratched marbles never have to slow down your next engineering adventure. Compatible with the Starter Set and every Gecko Run expansion pack, these marbles keep your track running smoothly for endless stunts, tricks, and physics experiments.

    Deeper Dive

    Lost your marbles? Get more! This is a pack of 7 metal replacement marbles for the Gecko Run marble run system.

    Ages

    8+

    Piece Count

    7

    Product Dimensions

    5.7 x 2.3 x 0.5 in.

    Product Weight

    0.2 lbs.

    Batteries Required

    N/A

    Country of Origin

    Germany

    Year Released

    2024

    Reviews

    Straight from real parents

    We envision a world where everyone loves to learn.

    Our products inspire kids and families to think deeper, play longer, and figure stuff out. 

    • Heritage Fuels Discovery

      Heritage Fuels Discovery

      With 200+ years of science publishing behind us, we've helped shape the STEM category worldwide. That heritage guides every product decision, from content development to quality standards.

    • Curiosity, Engineered

      Curiosity, Engineered

      We solve engineering problems most toy companies wouldn't attempt. GeckoBot climbs glass, Gecko Run builds marble runs on walls, and the Mega Cyborg Hand, a wearable hydraulic exoskeleton, was the #1-selling science toy in the US in 2025 (Circana).

    • Everyone's a Scientist

      Everyone's a Scientist

      We turn complex science and technology into fun, hands-on experiences for kids and families. From crystal growing to advanced robotics, we make the challenging feel approachable and the approachable feel exciting.