In this book you can expect 20 brand new instructions for extraordinary courses with spectacular effects: From the intersection directly into the catcher, a Gauss cannon loaded by your lane itself or a lane with a U-shaped layout. Some tracks are associated with a tricky task: Can you finish building the track so that the red ball overtakes the blue one? Do you manage to build a complete starter set on two floor plates? You will finally become a professional through exciting know-how: The book clearly answers questions about the physical phenomena behind GraviTrax. Tips for building: Twelve of the courses can be built with one starter set each, for two courses you need two starter sets each and for six courses one starter set plus one of the following extensions: Tunnel, Loop, Cascade, Flip, Tiptube or Transfer. Many courses can also be opened in the GraviTrax app and started and modified there.