The game was played on a board of lacquered plywood, normally with a 29 inch (74 cm) square playing surface. The edges of the playing surface are bounded by bumpers of wood. Instead of the balls of billiards games, carrom uses disks (also known as pucks or coins). The object of the game is to strike or flick with a finger a comparatively heavy disk called a "striker" such that it contacts lighter object disks called "carrom men" (alternatively, "carrom seeds") and propels them into one of four corner pockets. The carrom men come in two colors denoting the two players (or, in doubles play, teams). Traditionally, these colors are white (or unstained) and black. The breaker always plays white. An additional carrom man is colored red and called the "queen".