 Light gun shooters typically feature " on @-@ rails " movement , which gives the player no control over the direction the protagonist moves in ; the player only has control over aiming and shooting . Some games , however , may allow the protagonist to take cover at the push of a button . Other games may eschew on @-@ rails movement altogether and allow the player to move the protagonist freely around the game 's environment ; still others may feature a static environment . Light gun shooters utilise a first person perspective for aiming , though some games may allow the player to switch to a third person perspective in order to maneuver the protagonist . 
