Split into two teams and try to score by catching the disc in the opponent's end zone; each catch there counts as a point. Move the disc only by throwing it to teammates, since running while holding the disc is not allowed once you have caught it. If a thrown disc touches the ground, goes out of bounds, or is intercepted, possession switches immediately to the other team. Defenders can guard the person holding the disc but may not make physical contact, since the game is self-officiated and relies on players calling their own fouls honestly. After a score, the team that conceded the point throws the disc off to the other team to restart play. Games typically end when one team reaches a set point total or when a time limit runs out.