Belts is a mechanical labyrinth. A belt turns around and you have to keep your ball at the top by tilting and turning your device. On the belt are different obstacles and you have to find your way as the belt turns. Do not fall off and watch out for holes, pits, cannons, smoke and other obstacles. When you manage one revolution the speed increases, but that’s alright, you have already manage one revolution so you know your way.
What do you think happens after the second revolution? Correct, the speed increases even more. The third revolution? The speed increases even more and now it’s true skills to keep the ball on the belt.