Airsoft
Bullets from an Airsoft gun do not explode and leave paint on the target. But, if the BB (the bullets used by airsoft guns) hits hard enough, or hits clothing that is too thin, it can leave bruises and sometimes even make wounds.The BBs do not show clearly a mark showing that a player is hit, players use their own judgement to call themselves out. This system is unreliable, because people can not call themselves out and cheat. Many players usually stop this by 'lighting the player up', or shooting at the cheater until he calls his hit.