Original: This franchise is exclusive to the Dreamcast , Xbox and Xbox 360 consoles , and basically consists of Metropolis Street Racer ( Dreamcast ) , Project Gotham Racing ( Xbox ) , Project Gotham Racing 2 ( Xbox ) , Project Gotham Racing 3 ( Xbox 360 ) , and Project Gotham Racing 4 ( Xbox 360 ) .
Simplified: Project Gotham Racing often known as PGR is a series of driving video games published by Microsoft for the Xbox and Xbox 360 consoles .