In ultimate ball, there are two teams of seven players each. The objective is to score points by passing the ball to teammates in order to get it into the end zone. There are no boundaries, so play can go anywhere on the field. The game is played with a Frisbee, and players cannot run with the disc; they must pass it within 10 seconds or else the other team gets possession.
When one team scores, play stops and that team gets possession again at their own end zone. The game is over when one team reaches 17 points, or if time runs out (usually after 50 minutes). If both teams are tied at 16 points apiece at the end of regulation time, then sudden death overtime rules apply: the first team to score wins.