Gran Turismo developers Popyphony Digital have released a tally of lifetime sales figures for the series, useful not only for armchair statisticians, but also those curious as to how well Gran Turismo PSP has performed.
Turns out it's done quite well for itself, selling 1.8 million copies since being released last year. Which is great for a PSP title not called "Monster Hunter", but the real scale from the numbers comes from the series' overall performance.
Get a look at those overall sales. Sure, there was a significant drop-off between GT3 & GT4, but regardless, 55 million games sold is nothing to snort at.