Airsoft is a sport in which participants eliminate opponents by hitting each other with spherical non-metallic pellets launched via replica weapons called airsoft guns. Unlike paintballs, airsoft pellets do not mark their target and hits are not always visibly apparent. The airsoft relies on an honor system in which it is the ethical duty of the person who has been hit to call themselves out regardless of whether or not anyone saw it happen.
Gameplay varies in style and composition but often range from short-term skirmishes, organized scenarios, C.Q.B. (Close Quarters Battle), field, military simulations (MilSim) or historical reenactments. They are played in some indoor courses, and outdoor (fields). Combat situations on the battlefield may involve the use of military tactics to achieve objectives set in each game. Participants may attempt to emulate the tactical equipment and accessories used by modern military and police organizations. A game is normally kept safe by a trained professional and the weapons are usually powered by gas or various types of batteries. A gun's power is checked through a chronograph and usually measured in feet per second. Different game sites allow a different amount of FPS but different countries also have a set FPS and a gun shooting over the required FPS can be confiscated or not allowed to be used on airsoft sites; for instance, a sniper would usually have a higher FPS than a submachine gun, since a sniper needs a minimum engagement range to reduce the danger from being hit at close range by a powerful weapon.