Paintball is a competitive team shooting sport in which players eliminate opponents from play by hitting them with spherical dye-filled gelatin capsules ("paintballs") that break upon impact. Paintballs are usually shot using a low-energy air weapon called a paintball marker that is powered by compressed air (nitrogen) or carbon dioxide and was originally designed for remotely marking trees and cattle.The game was initially developed in May 1981 by Hayes Noel (a Wall Street stock trader) and Charles Gaines (an avid outdoorsman and writer). Best friends, Noel and Gaines argued about who would be better suited for survival, a city dweller who knew how people's minds worked (Noel) or a man who had spent his youth hunting, fishing, and building cabins in the woods (Gaines). The two men chanced upon an advertisement for a paint gun and were inspired to settle their argument with paintball markers, eventually creating the sport that is now called Paintball.The sport is played for recreation and is also played at a formal sporting level with organized competition that involves major tournaments, professional teams, and players. Paintball technology is also used by military forces, law enforcement, paramilitary and security organizations to supplement military or other training. Paintball markers can play a role in riot response and nonlethal suppression of dangerous suspects.Games can be played on indoor or outdoor fields of varying sizes. A game field is scattered with natural or artificial terrain, which players use for tactical cover. Game types and goals vary, but may include capture the flag, elimination, defending or attacking a particular point or area, or capturing objects of interest hidden in the playing area. Depending on the variant played, games can last from minutes to hours, or even days in "scenario play".
The legality of paintball varies among countries and regions. In most areas where regulated play is offered, players are required to wear protective masks, use barrel blocking safety equipment, and safe game rules are strictly enforced. Wikipedia