Just to confirm the BEST SELLING GT EVER!!!
Double Platinum (Sold over 600,000)
GRAN TURISMO 2
GRAN TURISMO 3
GRAN TURISMO 4
Platinum (Sold over 300,000)
GRAN TURISMO 5: PROLOGUE
http://vgsales.wikia.com/wiki/Best_selling_games_in_the_UK
No other GT got the Diamond (Sold over 1 million) label in UK.
Congrats GT5.