Darts is a variety of related games, in which darts are thrown at a circular target (dart board) hung on a wall. Though various different boards and games have been used in the past, the term 'darts' usually now refers to a standardised game involving a specific board design and set of rules.As well as being a professional competitive activity, darts is a traditional pub game, commonly played in the United Kingdom (the first country to officially recognize darts as a sport), across the Commonwealth, the Netherlands, Ireland, Palestine, the Scandinavian countries, the United States, and elsewhere. Dart boards are usually made of sisal fibers or boar bristles, low quality boards are sometimes made of paper. A regulation board is 18 inches (45.72 cm) in diameter, and is divided into 22 sections. Each section is lined with thin metal wire.