For a complete listing check out the U.P.A.'s complete rules . The field size can vary to accommodate different numbers of players for recreational play. A regulation game has seven players per team. 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.