Below are the rules to some of the more popular dart games.. The equipment needed to play darts is as follows. A good dartboard; A set of three darts, either soft-tipped or steel-tipped.; A safe, well lit place to play. Dartboards. The standard international dartboard is known as the "clock" board. It is 18 inches in diameter and has 20 numbered, pie-shaped segments of equal size, plus the.