The extent to which an FPS is a simulation of real-world shooting and combat. FPS on the classic end of the scale are characterized by fast movement, bunny-hopping, dominance of slow-projectile explosive weapons (rockets), large health gauges (or regenerating health) to allow for longer duels, nerfing of the accuracy/firepower of direct-fire automatic weapons for gameplay/fun purposes, and fun tricks like rocket jumping. Vehicles will be easy to pilot, able to dodge/strafe, and able to shoot reasonably well while moving. Hyperspace Arsenals are common. Items are placed on the ground very unnaturally or are even spinning in the air. Near the classic end of the scale, Artificial Stupidity is common for balance purposes. Bosses will be larger-than-life and over-the-top.