Line of Fire is a first-person light gun shooter game developed by Sega and released for arcades in 1989. It was released with two arcade cabinet versions, a standard upright and a sit-down cockpit, both featuring two positional guns. The cockpit design allows the player(s) to sit down while playing the game, while having two-handed machine guns, controlled by a potentiometer-controlled gun alignment software system. The game follows a two-man commando unit as they try to escape from a terrorist facility after seizing a prototype weapon.

Light-gun shooter, also called light-gun game or simply gun game, is a shooter video game genre in which the primary design element is to simulate a shooting gallery by having the player aiming and discharging a gun-shaped controller at a screen. Light-gun shooters revolve around the protagonist shooting virtual targets, either antagonists or inanimate objects, and generally feature action or horror themes and some may employ a humorous, parodic treatment of these conventions. These games typically feature "on-rails" movement, which gives the player control only over aiming; the protagonist's other movements are determined by the game. Games featuring this device are sometimes termed "rail shooters", though this term is also applied to games of other genres in which "on-rails" movement is a feature. Some, particularly later, games give the player greater control over movement and in still others the protagonist does not move at all. On home computer conversions of light-gun shooters, mouse has been often an optional or non-optional replacement for a light gun.