Gran Turismo 5 Prologue is the most sold PS3 game in Japan

[Kantor]

Let's see what previous games did:

Gran Turismo: 2.55 million
Gran Turismo 2: 1.71 million
Gran Turismo 3: 1.89 million
Gran Turismo 4 Prologue: 0.79 million
Gran Turismo 4: 1.16 million
Gran Turismo 5 Prologue: 0.68 million

I think GT5 will just about cross a million in Japan, looking at the prologues for GT4 and GT5. GT5 was on the market for way longer, on a console with no other GT game, and it's still below GT4P. GT is still huge, but it's not that massive in Japan anymore.