The group leader puts lots of nerf balls in a playing area. The group divides into pairs, and one member of each pair is blindfolded and guided (in any way desired) by the other. All of the pairs go into the playing area and pick up balls to throw at other pairs. Only the blindfolded member of each pair is allowed to touch the balls. When a pair gets hit three times, they are eliminated. The game continues until only one pair is left.
Source: From the original site.