Which Gran Turismo game was the first video game developed by Polyphony Digital?

Gran Turismo 2 was the first Gran Turismo game developed by Polyphony Digital.

The original Gran Turismo was created by Polys Entertainment, a development group within Sony Computer Entertainment Japan. After that game’s success, the studio was reestablished as Polyphony Digital in April 1998. Gran Turismo 2 therefore became the first series entry released under the Polyphony Digital name.

Gran Turismo 2 launched for the original PlayStation in Japan and North America in 1999, with a European release following in 2000. It greatly expanded the series, featuring roughly 650 cars, rally events, and a much larger career structure. Its size required two discs, one for arcade content and one for the simulation mode.

A common mix-up is Gran Turismo, which was the first game in the series but was made before the studio adopted the Polyphony Digital identity. Gran Turismo 3: A-Spec was the first main entry developed for PlayStation 2, not the first Polyphony Digital Gran Turismo.