Gun Buster (ガン バスター), also known as Gunbuster (ガンバスター) and released in North America as Operation Gunbuster, is a first-person shooter video game developed by Taito and released for arcades in 1992. In contrast to on-rail light gun shooters at the time, this was one of the first arcade games to feature free-roaming FPS gameplay, the same year Wolfenstein 3D was released on personal computers.