Gran Turismo[a] is a 2009 sim racing video game by Polyphony Digital and published by Sony Computer Entertainment for the PlayStation Portable.

As of September 2017, Gran Turismo has sold 4.67 million units, making it one of the best-selling PSP games.

For the first time in the series, the game features the use of custom soundtracks that enables players to play their own songs while racing, but this option must first be unlocked by completing section B or C of the Driving Challenges.

[5] Gran Turismo features 833 vehicles, each modeled accurately and statistics derived from their real life counterparts.

[10] It was initially announced that downloadable content (DLC) would not be released for Gran Turismo,[7] although seven cars, the 2003 Mercedes-Benz SLR McLaren, 2009 Nissan GT-R SpecV, 2008 Citroen GT, 2009 Bugatti Veyron 16.4, 2009 Chevrolet Corvette ZR1,[11] 1974 Lamborghini Countach LP400 and the 2002 Ferrari Enzo, were made available for download via the PlayStation Store.

Series director Kazunori Yamauchi stated that the main problem was trying to fit the game in such a small memory space.

Polyphony president Kazunori Yamauchi wanted the game to be a "fully specced" title, not merely "a subset to the series".

As the Go features a relocated analog nub, the developers had to make adjustments to ensure the experience felt the same as with a standard PSP.

Called simply Gran Turismo, its October 1, 2009 release date coincides with the launch of the PSP Go, which was announced at the same conference.

Sony also ran a TV commercial campaign,[27] with one advertisement shot at Mazda Raceway Laguna Seca.

It featured a real Chevrolet Corvette ZR1 competing against a person playing Gran Turismo in the passenger seat.

[29] Gran Turismo is available as both a Universal Media Disc (UMD) at retail and as a digital download from the PlayStation Store.

[40] As of September 2017, Gran Turismo had sold 4.67 million units worldwide, making it one of the best-selling PSP games.