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! 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. The XXL starter set comes with over 240 components and offers everything you need to get started right away - a pack full of endless possibilities and creativity. It includes: 1x Set of Instructions, 1x Set of Blueprints, 1x Exercise Booklet, 6x Card Bases, 4x Transparent levels, 10x Gravity Spheres, 80x Large Vertical Tiles, 24x Small Vertical Tiles , 6x Long Rails, 12x Medium Rails, 18x Short Rails, 42x Curved Bases, 1x Magnetic Cannon, 2x 3in1 Base, 6x X intersection Bases, 1x Vortex Base, 4x Switches, 2x 3 Way Starter Base Insert, 8x Bases for inserts, 2x End target, 4x Catcher Base Inserts, 2x Free Fall Base Insert, 2x Base Inserts, 2x Target Base Insert, 2x Y Points Bases, 1x Loop, 1x HammerFor Ages: 8+WARNING: Choking Hazard; Small Parts and Small Balls. Not for children under 3 years old.