Gecko Run Challenge Edition by Thames & Kosmos | Vertical Marble Run with Flexible Tracks

Gecko Run Challenge Edition: engineering play that grows with you

Take marble-mad engineering to the next level with Gecko Run Challenge Edition by Thames & Kosmos. This vertical marble run invites you to design, test, and compete using only the parts provided, then adjust and try again as you refine your approach.

Built for both solo exploration and two-player head-to-head sessions, the kit uses flexible tracks and nano-adhesive pads for a clean, no-mess setup. With 32 challenge cards, every session presents a new constraint, a new path, and a new chance to observe physics in action.

What you get and how it works

• Two rapid-fire launchers and two marble catcher devices
• 32 challenge cards, each presenting a unique engineering task
• Enough parts for two players or two teams to build simultaneously
• 16-page illustrated manual guiding setup and play

Open-ended play with flexible, space-saving tracks

The system features flexible tracks that attach to smooth surfaces without traditional supports, allowing you to build higher with fewer pieces. The nano-adhesive pads grip securely but reposition easily, leaving surfaces undamaged.

• Made from renewable materials and designed for mess-free use
• Endless configurations spark creativity and experimentation
• Observe basic physics principles in action through hands-on testing
• Encourages iteration and problem solving with each new card

Versatile play and expansion

Use Gecko Run Challenge Edition on its own, or pair it with expansion packs for even more designs and constraints. The included manual helps you start quickly and explains how each element functions in practice.

Why players love it

Expect a tactile, immersive experience: the crisp click of pieces joining, the satisfying glide of marbles, and the satisfying reset as you try a new layout. Benefits are possibilities, not guarantees, and interest grows as configurations change.