Gran Turismo 4 is a first-person simulator with racing elements from the studio Polyphony Digital Inc.. The game is published by Sony Computer Entertainment Incorporated. Gran Turismo 4 is also known as GT车4, GT Saiche 4, GT4 and Gran Turismo 4: The Real Driving Simulator. Perhaps Gran Turismo 4 is being developed for PC, but this version has not yet been announced. It seems that Gran Turismo 4 turned out to be complete crap. This is evidenced by the low ratings on the Metacritic service.