Experience the power of gravity! GraviTrax is the all new STEM track system from Ravensburger! Use your imagination to build superb tracks and set the gravity spheres rolling! With the GraviTrax Catapult you can overcome some serious obstacles. Briefly overcome gravity as the gravity sphere flies through the air. You will need to make sure the sphere has a place to land and finish the track. This STEM system [Science, Technology, Engineering and Maths] is an ideal one to teach kids about gravity, magnetism, kinetic energy and fun. Hit a snag? Freestyle with your own track design or use the tasks and blueprints included to help you to get started in the world of GraviTrax! Are the gravity spheres stopping or flying off before reaching the end target? Time for some problem solving. Rebuild and try something different! The GraviTrax track system can be extended indefinitely with extra track packs and add-on’s – each sold separately. This set is suitable for 1+ players, ages 8 years and up. Contents 1x Set of Instructions, 1x Catapult Base, 4x Gravity Spheres 2x Spare Rubber Bands *Please note that all items within our outlet section contain a level of damage to the packaging, which in no way effects game play. B Grade products will arrive without cellophane and have sustained varying levels of exterior damage, this may include dents and creases. Full descriptions of our grades can be found on our Outlet page, for more information please check our terms and conditions.