Paintball is a relatively new sport which is gaining popularity throughout the world. Players of paintball use guns (or markers) to fire paintballs, which are marble sized projectiles filled with a type of paint, at opposing players. The paintballs, which are coated with a gelatin like substance, explode upon impact, leaving a quarter sized splotch on the opposing player (don't worry, it washes out!) which indicates that player has been eliminated from gameplay.
The first known paintball game took place in 1981 in New Hampshire. The next year the first recreational paintball field was opened in Rochester, New York. As years passed, indoor fields began to open and tournaments, some with lucrative prizes, began to be offered. The 1990s saw the game become international by expanding to Europe, and the game is now played by over 12 million people in the world, making it among the most popular extreme sports in the entire world.