Operation Wolf

Assuming the role of Special Forces Operative Roy Adams, the player attempts to rescue five hostages who are being held captive in enemy territory. The game is viewed from a first-person perspective, and is on rails, with the screen scrolling horizontally through the landscape.^[12] The game has six stages to advance the story. For example, after the jungle stage is completed, Adams interrogates an enemy soldier and learns the location of the concentration camp and hostages. Each stage has unique objectives and effects on gameplay after completion, all based on rescuing hostages. Game over screens vary depending on situations, such as the player's death or failure to rescue all hostages. Continuing the game restarts the stage. The Nintendo Entertainment System version has multiple endings depending on the number of rescued hostages.

The arcade cabinet has an optical controller resembling an Uzi submachine gun which the player can swivel and elevate, and which vibrates to simulate recoil of gunfire.^[13] Pulling the trigger allows fully automatic fire, and pressing the button near the muzzle launches a grenade with a wide blast radius against multiple targets.

To complete each stage, the player must shoot a required number of soldiers and vehicles (trucks, boats, helicopters, armored transports), as indicated by an on-screen counter. The limited ammunition and grenades can be replenished by shooting objects. Shooting dynamite bombs causes heavy damage to every target on the screen, both enemy and friendly, and a special machine gun power-up allows unlimited ammunition and an increased rate of fire for 10 seconds.

Enemies attack with gunfire, knives, grenades, mortar and bazooka rounds, and missiles; all their visible incoming projectiles can be shot out of the air. The player has a damage bar that slowly fills due to enemy attacks or shooting friendly targets such as nurses and boys. Damage can be recovered by collecting health power-ups and completing stages.

The game was converted to the Amstrad CPC, DOS, NES, Amiga 500, Atari ST, Master System, FM Towns, Commodore 64, PC Engine, and ZX Spectrum. Most lack light gun support (except NES and Master System) and must be played with a keyboard or a controller. In 1989, a special ZX Spectrum version with Magnum Light Phaser support was produced for inclusion in Amstrad's ZX Spectrum +2 and +3 Action Pack hardware bundles.^[14] The box for the Master System version features promotional art from Operation Thunderbolt.

In 2005, Operation Wolf was released on the Xbox, PlayStation 2, and Windows within Taito Legends without light gun support. The NES version was released on the North American Wii Virtual Console in February 2008 without light gun support.

Operation Wolf had long-term influence on the market upon its release. It is credited with evolving the light gun shooter genre. It departed from the shooting gallery, carnival, and cartoon themes that had previously dominated the genre for decades, from electro-mechanical games in the 1960s until Nintendo's Duck Hunt in 1984, and moved the genre toward more realistic, violent, and military shooter themes.^[41][47] In contrast to Taito's earlier gun games including Attack (1976), N.Y. Captor (1985), and Cycle Shooting (1986) which have simple cartoon graphics, Operation Wolf has more realistic graphics. This provides a depth of perspective by using different sized sprites.^[41]

Operation Wolf took the military themes of 1980s run and gun video games (such as Commando, Green Beret, and Ikari Warriors)^[47] and action films (such as Rambo and Commando) and applied them to light gun shooters.^[41] It presents a novel light gun shooter basis for the prisoner of war (POW) rescue mission with massive violence, killing masses of enemy soldiers.^[41] It innovates on the mounted gun mechanism - used before in Taito's Attack and even older Midway mechanical games from the 1960s - by using an optical sensor and a physical sensation of gunfire.^[41] It spawned many arcade shooters with mounted machine gun controls and increasing levels of violence during the late 1980s to early 1990s.^[48][49] Den of Geek cited it as a precursor to the then emerging first-person shooter genre.^[50]

The game popularized first-person light gun rail shooters and inspired numerous clones and imitators during the late 1980s to early 1990s.^[9][47][48] Examples include SNK's Mechanized Attack and Sega's Line of Fire in 1989,^[9] SNK's Beast Busters in 1990, Namco's Steel Gunner and Midway's Terminator 2 in 1991,^[41] and Konami's Lethal Enforcers in 1992.^[47] Further influenced by Operation Wolf, the genre remained popular into the late 1990s and declined following the rise of the first-person shooter (FPS) genre.^[47]

Operation Wolf spawned four sequels: Operation Thunderbolt (1988), Operation Wolf 3 (1994), Operation Tiger (1998), and Operation Wolf Returns: First Mission (2023).