Kelly pool (also known as pea pool, pill pool, keeley, the keilley game, and killy) is a pocket billiards game played on a standard pool table using fifteen numbered markers called peas or pills, and a standard set of sixteen pool balls. Gameplay involves players drawing peas at random from a shake bottle, which assigns to them the correspondingly numbered pool ball, kept secret from their opponents, but which they must pocket in order to win the game. Kelly pool is a rotation game, which means that players must contact the lowest numbered object ball on each shot first until the opportunity to pocket their own is presented. Two rule variants are set forth under rules promulgated by the Billiard Congress of America (BCA). In the simpler form, the object of play starts and ends with the goa