Players are divided into two teams. Each team designates a pitcher who pitches to his own team. Each batter gets two pitches to hit a balloon with his fist. If the ball is hit, the fielding team tries to blow the balloon to the ground before the batter runs around the bases. If they do not, a run is scored. Play continues until everyone on the batting team has been "up to bat". Then, the inning is over and teams switch places. The game continues for a specified number of innings.
NOTE: Depending on the age of the players, the distance between bases may be altered.