The baseball floats on a stream of air and you hit the ball into the inflatable where there are several holes reading outs, basehit, homerun and foul ball. The objective is to hit a homerun. THIS GAME IS ADDICTIVE!!!! the inflatable has an automatic ball return and uses whiffle balls and bats for safety. This unit runs on a regular 20amp, 110v household outlet. Fun Source is not responsible for power, however we do rent generators.