Sony explains why Gran Turismo 6 is not coming to PlayStation 4 (for now)

The announcement of Gran Turismo 6 so shortly after the PlayStation 4 was announced had some fans scratching their heads. Why wouldn't Polyphony aim this graphical showpiece as a debut title for the next-generation console?

The answer, perhaps unsurprisingly, seems to come down to sales potential. Speaking to the PlayStation EU Blog, SCEE CEO Jim Ryan talked about squeezing the juice out of the PS3, before quickly turning toward talking about the install base.

"You had GT1 and GT2 on PS one, GT3 and GT4 on PS2, then there's GT5 on PS3 and a space next to it. The difference between Gran Turismo and GT2 is unbelievable, but they're both on the same platform," Ryan said. "The difference between GT3 and GT4 is huge. We're absolutely confident when GT6 comes, you'll see a big step change up from GT5 too. There's still a lot of potential on PS3 that a developer like Polyphony can really exploit.

"And the other factor is that on PS3 we have an install base of 70 million units. On PS4 on launch day we'll have an install base of zero units. There'll be plenty of games to help drive PS4 – not least Driveclub in the racing genre from Evolution Studios, a studio with a fantastic pedigree."

That doesn't mean the game will never reach PS4, however. Polyphony president Kazunori Yamauchi has already said that it has a PS4 version in mind "for the future," but wanted to focus on the PS3 version for this holiday season.