With BoomTrix make an extreme course and gravity will help you do as many tricks as possible there are so many options, let your imagination run wild and discover so many possibilities, It Never has to be the same. A useful hint: using different levels helps change the speed, launching the ball from a height will create speed. With the multi-ball pack you can create your own BoomTrix track. Bounce the ball with the coolest stunts anywhere. You can make many unthinkable tracks, wherever you want. The multi-ball pack includes: 1x ramp tower, 5x trampolines, 3, trampoline curves, 1x stunt ring, 3x stunt wall, 1x flapping goal, 8x metal balls and instructions.