Billiards is a family of games played on a cloth-covered table where players use a long stick called a cue to strike balls. In some versions, players try to knock balls into pockets along the table's edges, and in others they try to make the balls hit each other in specific ways. The most familiar version is pool, played on a table with six pockets and fifteen colored balls plus one white cue ball. Other versions include snooker (played on a larger table with twenty-two balls) and carom billiards (played on a pocketless table where points come from making balls collide).

What makes billiards challenging is that it requires both physical skill and strategic thinking. You need a steady hand and good aim to strike the cue ball precisely, but you also need to think several shots ahead, positioning balls for your next turn. Players must understand angles and predict how balls will bounce off the cushioned rails around the table's edges.

The game originated in fifteenth-century Europe as an indoor version of lawn games like croquet. For centuries, billiards was considered a game requiring patience, precision, and courtesy. Today, people play billiards recreationally at pool halls and competitively in tournaments. The clicking sound of balls colliding and the green felt table have become iconic symbols of the game.