Double 6 Wooden Dominoes SetOldest written mention dates to 13th century China. Enjoyed by players for centuries. Rectangle formed by joining two equal squares. Uses the most common configuration for casual play. Set contains 28 wooden tiles. Each tile is divided into two equal halves. Each half shows spots from one to six or is blank. Designed for two to four players or teams. Players place pieces to connect matching ends. Only sides with the same number of dots may join.