indoor target game played by throwing feathered darts at a circular board with numbered spaces. The game became popular in English inns and taverns in the 19th century and increasingly so in the 20th.

The board, commonly made of sisal (known familiarly as “bristle”) but sometimes made of cork or elmwood, is divided into 20 sectors valued at points from 1 to 20. Six rings determine the scoring: an inner bull's-eye worth 50 points, an outer bull's-eye worth 25 points, a wide single-scoring ring, a narrow triple-scoring ring, another wide single-scoring ring, and, outermost, a narrow double-scoring ring. Throwing is free-style. The recognized standard length is 7 feet 9.25 inches (2.37 m), though traditional distances vary up to 9 feet. The centre of the board is posted 5 feet 8 inches (1.73 m) above the floor. (These and other rules may vary slightly in countries outside the British Isles.)

In the organized game, each player has three weighted and feathered darts, generally about 16 cm (6 inches) long. The player usually begins with any double score (dart thrown into the double ring). He subtracts this and subsequent scores from a previously chosen number, usually 301 or 501. The winner must reach exactly zero on his last throw. In informal pub games, players usually total up their scores from the start and declare the player who first reaches a predetermined number the winner.

Variations of the game include “cricket,” a game for two teams in which the players alternate between scoring inner bull's-eyes and points; “football,” a game for two players in which the first player to hit the inner bull'seye scores as many “goals” as he can by throwing doubles until his opponent scores an inner bull's-eye; and “round the clock,” a singles game for any number of players, which requires that, after a starting double, each player must throw one dart into each of the sectors, in order, from 1 to 20.

A form of darts was a training game for English archers in the Middle Ages. The game was popular with Tudor monarchs from Henry VIII. In its modern form in Britain (United Kingdom), the game is ordinarily played in the public house, or pub (tavern), or in a club, rather than in the home. Of an estimated 5 million players in the British Isles, about 25,000 are represented by the British Darts Organisation (BDO; founded 1973). The BDO is the founder member of the World Darts Federation (WDF), which represents more than 500,000 darts players in 50 countries. The major championships are the Winmau World Masters, the WDF World Cup, the Embassy World Professional Darts Championship, and the News of the World Championships.

Beginning in the 1980s, coin-operated electronic darts machines, which feature a perforated plastic board and darts made entirely from plastic, gained widespread popularity in the United States. The number of American darts players grew to an estimated 17 million in the early 1990s. The American Darts Organization represents more than 60,000 players.