Paintball is a sport in which participants eliminate opponents from play by hitting them with paintballs, spherical gelatin capsules containing primarily polyethylene glycol, other non-toxic and water-soluble substances, and dye, shot from a compressed-gas-powered gun, commonly called a marker.
Paintball draws a wide array of players, and the Sporting Goods Manufacturer's Association estimates that over 30 million people play annually in the United States alone.