• As seen on TV - GraviTrax is an innovative marble run and construction toy for boys and for girls ages 8 years and up. It is an ideal christmas gift or birthday gift for smart, curious kids. The Starter set comes with over 120 pieces to get you started!
• Innovative - The GraviTrax interactive track system allows you to design and build your own race tracks and experiment with engineering, gravity, magnetism, and kinetics to propel your ball to the finish.
• Infinitely Expandable - Gravitrax in fully expandable with a large range of expansion pack and accessories! An amazing building toy!
• Develops critical skills – Playing and building with GraviTrax builds spatial reasoning and planning skills, and provides a great stealth learning experience.
• Clear instructions – Comes with clear instructions so that you can start construction and start playing with this fun brain game within minutes