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12 in stock
Curbside Pickup Available or home delivery on in-town orders*

Recommended for ages 8 to 14 years                      122 pieces


With over 100 pieces and 18 different construction elements, the GraviTrax® Starter Set offers everything you need to begin building your own action-packed track systems. Discover how the laws of physics affect the journey your marble takes with curves, junctions, freefalls and even a cannon. Experiment using different heights and angles to control the speed of the marble to get it to the finish.

What is GraviTrax®?

Design! Follow the plans or challenge yourself by designing your own marble run racing system.

Build! With over 100 pieces + 18 unique action parts, the Starter Set gets you launched!

Expand! Add expansion sets and action accessories for infinite possibilities! (Additional sets are available separately.)

Race! Gravity determines each ball's destiny—but you have the power to change it!

Learn! Fun science and engineering concepts like gravity, magnetism, and kinetics make STEM exciting.


  • GraviTrax® is an innovative construction set with endless building possibilities allowing open-ended design, fast-paced fun and infinite creativity for the EPIC marble run!
  • With the GraviTrax® Starter Set marble track system, you build your own marble track worlds creatively according to the laws of gravity.
  • Use the components to develop an action-packed course on which the spheres roll into the target with the help of magnetism, kinetics and gravity.
  • The GraviTrax® marble track system can be expanded endlessly by adding additional components, levels and spectacular action pieces—for lasting fun!
  • Download the free App for your smartphone or tablet*, build your own marble run system and play with different marbles and camera perspectives from the ball’s point of view! Test new layouts in the app and then build them in real life with your GraviTrax® system.
  • Reinforces strategic thinking, spatial reasoning and planning skills.
  • Builds STEM skills in experimenting with gravity, magnetism and kinetics.
  • Contents of the Starter Set: Building plan booklet, task booklet, 4 base plates, 2 transparent levels, 6 balls, 40 height blocks large, 12 height blocks small, 21 curves, 3 crossings, 2 switches, 1 3-in-1, 1 swivel, 1 starting block, 1 action block Gauss cannon, 3 rails long, 6 rails medium, 9 rails short, 1 target ladder, 4 base stones, and inserts for the base stones: 2 traps, 1 free fall, 1 splash, and 1 target.
  • Package dimensions: 14 x 14 x 4 inches (LxWxH).
  • Contains small parts! Not suitable for children under age 3 years!

*Smart phone or tablet not included with set!

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