Operation Wolf is an arcade conversion of the game by Taito. It is essentially a bitmapped "rail-shooter", where you basically hold the gun and shoot just about everything that moves, while conserving your ammo and grenades. Shoot ammo/grenades and "heal" items on screen to "pick up". Your primary machine gun can kill everything if you hit it enough times, but you can also use the grenade launcher for really deadly targets like helicopters or armored cars.
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