What you have to do?

In airsoft you have to simulate real life shooting scenarios with gas propelled toy guns. Airsoft, also known as "MilSims”  was invented in Japan by Ichiro Nagata. Although similar to paintball in concept and gameplay, airsoft pellets do not leave visible markings on their target and hits are not always apparent. Though the pellet impacts can leave small bruises or welts on exposed skin (and so protective gear is still recommended), the game relies heavily on an honor system in which players who have been hit are expected to call themselves out of play in keeping with honesty and sportsmanship.