Nine ball is a contemporary form of pool with historical beginnings rooted in the United States and traceable to the 1920s.
The game may be played in social and recreational settings by any number of players and subject to whatever rules are agreed upon beforehand, or in league and tournament settings in which the number of players and the rules are set by the sponsors. During much of its history, nine-ball has been known as a "money game" in both professional and recreational settings, but has since become established as a legitimate alternative to eight ball, straight pool and other major competition games.
The game is played on a pocket billiards table with six pockets and with ten balls. The cue ball, which is usually a solid shade of white , is struck to hit the lowest numbered ball on the table , each of these balls are distinctly colored and numbered 1 through 9. The object of the game is to legally pocket the 9 ball.