Design and build your own race tracks and experiment with gravity, magnetism, and kinetics to push your ball to the finish line! The tiles, levels, tracks and features allow you to control the speed of each ball, and the open-ended building concept lets you design a different track every time you play. GraviTrax comes with over 100 pieces and 18 different construction elements. Explore the laws of physics with curves, crosses, freefalls and even a cannon. Watch how different heights and angles affect the speed of the ball. Use the included construction plans, or let your creativity take over and begin constructing your own track designs from scratch.