Official, developer-provided cheat codes for Polyphony Digital's seminal Gran Turismo 4 on the PlayStation 2 console have finally been discovered. Though the newer Gran Turismo 7 was favorably reviewed, Gran Turismo 4 is often held up as a golden standard for the franchise, and these cheats may get people to start it back up again. Initially launched in 2004, the game represented the pinnacle of racing technology at the time. Though it's never officially made its way to different platforms, it still enjoyed global fame and recognition, with some fans playing it even today, almost two decades following its release.