Nine-ball is a popular cue sport played with nine numbered balls and a cue ball. The objective is to legally pocket the nine ball by hitting the lowest numbered ball on the table first. Players take turns, and the game continues until one player pockets the nine ball or commits a foul. In Nine-ball, players score points by pocketing balls in numerical order, but they can win by pocketing the nine ball directly. The game is typically played on a standard pool table, and matches can be fast-paced, making it exciting for both players and spectators.