Called Ultimate Tak Ball, this extreme sport, invented by Leif Kellenberger, Eric Prum and Erik Wunsch and first played in California, involves the use of stun devices. In this game, two competing teams try to get an over-sized ball into a goal at either end of a 200 x 85-foot field. Players from both teams are given stun devices that output anywhere from 3-5 milliamps to be used on opposition in possession of the ball. Continue reading to see one of these gamers in-action.