Players start with a score of 0. A score of exactly 321 wins the game. Exceeding 321 points is a bust and the player's score is set back to 321 minus the excess points. A player must ZAP at least one opponent before finishing. Team with first player to finish AND with highest team total wins.
Opponent hitting protected number loses a dart.
Players shoot at 15 through 20 and Bullseye. Additional marks on a closed number score points if any opponent is still open on that number. The Player to Close al of the targets and have the highest score wins the game. A marked number that is not closed by any player will change to a new number after each player's turn. Marked numbers will continue to change until closed by any player.