Sony Worldwide Studios big wig has reaffirmed that is still in for the PlayStation Potable. The game was first mooted several years back.

Speaking to Eurogamer.net at the Tokyo Game Show, Yoshida was asked where the game was at: "Good question! It's in Digital, they're working on it."

Polyphony's other projects have apparently caused delays to the release.

"They have been working on Prologue and Gran Turismo 5 for PS3, so they've had to focus on finishing up Gran Turismo on the side," he offered. "That's been making the PSP development a little bit slow."

Yoshida wouldn't be drawn on a release date.

By Luke Guttridge