This number can vary for recreational play to accommodate your group. There are no official referees in the sport of ultimate. Players are responsible for making their own calls and resolving their own disputes. This is governed by the Spirit of the Game, which states that there will be no violation of the respect between players, nor will the joy in playing be sacrificed over a called foul. Teams try to score points by completing a pass in their opponents end zone.
Teams move the disc down the field by completing passes to their teammates.
Players may not walk or run with the disc. Upon receiving the disc, the player has 10 seconds to attempt a pass to a teammate. The defender guarding the thrower enforces this by counting out loud. Play begins with each team lining up in front of their end zone. The offense then attempts to move the disc up field with the goal of completing a pass in the opponents end zone.