Balkline (sometimes spelled balk line or balk-line) is the overarching title of a large array of carom billiards games generally played with two and a third, red , on a -covered, 5 foot × 10 foot, less table that is divided by on the cloth into marked regions called . Such balk spaces define areas of the in which a player may only score up to a threshold number of points while the are within that region.