Nine Ball is a popular cue sport played with nine numbered balls and a cue ball. The objective is to legally pocket the balls in numerical order, starting with the lowest number on the table. Players take turns, and the game continues until one player pockets the nine ball, winning the game. In Nine Ball, players must hit the lowest numbered ball first, but they can pocket any ball as long as they make contact with the lowest one. The game is often played in a race-to format, where players compete to reach a predetermined number of games won.