Gecko Run: Twister Expansion Pack

With the Gecko Run: Twister Expansion Pack, you can give your marbles a real spin. This not only brings extra fun to your Gecko Run marble run, but also makes the laws of physics visible. The Twister Expansion Pack comes with over a dozen pieces to complement the Gecko Run Starter Set, including a twister stunt; additional marbles and nano-adhesive pads; 2 extra tracks; and more. Intuitive: Tracks attach to smooth surfaces with the help of clever nano-adhesive pads that stick to smooth, vertical surfaces around your home Mess-free: The pads are not glue-based and can be quickly and easily repositioned without leaving behind damage or sticky residue. Open-Ended: Position in endless configurations on smooth surfaces  Educational: Develop engineering and problem-solving skills, and see physics in action Tracks made from renewable raw materials For ages 8 and up.