Human Hamster Ball is just as much fun to watch as it is to play! Two opponents, inside of a huge, inflated sphere hamster ball, race through the course while popping over low “curb” inflatables from one section to the next. The first to return to the starting point is the winner. Hamster Ball requires a level 20-ft. wide x 50-ft. long space with direct access to 110-volt 20-amp electric and can be set indoors, on grass or asphalt.