A typical set of Western-style dominoes has 28 pieces. The individual members of the set are called bones, pieces, men, stones or cards. Every piece is a rectangle of wood, bone or plastic with a pattern of dots or a blank face at each end.
Domino dots are usually arranged like the spots on a die, ranging in number from one to six, although some domino sides are blank. A version of the game goes back at least as far as 10th-century China; however, the modern Western variation probably appeared during the 1700s in Italy and France. The goal of the game is to achieve the highest score by positioning the stones to match numbers or reach a certain sum.