Activision has claimed that Call of Duty: Black Ops is the biggest selling PS3 game of all time, citing NPD, ChartTrack and GfK as sources.
No actual figure was recorded for the latest in the CoD series, however.
If correct, Black Ops has topped Gran Turismo 5 (6.37 million), Gran Turismo 5 Prologue (5.2 million), Konami's Metal Gear Solid 4: Guns of the Patriots (4.75 million), Infinity Ward's Call of Duty: Modern Warfare 2 and Naughty Dog's Uncharted 2: Among Thieves (over 3.8 million copies worldwide) to take the title of PS3's biggest game of all time.
Black Ops released in November last year. It took $650 million in its first five days on sale.