Activision has published new data which suggests that Black Ops 2 is more in line with the success of previous Call of Duty games than it first appeared.
On Wednesday the publisher announced that the game has grossed $1 billion worldwide in fifteen days since going on sale, a milestone reached a single day quicker than last year's blockbuster Modern Warfare 3. The figure was based on internal sell-though estimates, retail data and official Chart-Track information.
The announcement comes after trade analysis suggests that Black Ops 2 did not sell as fast as its predecessor, reportedly down by as much as 20 per cent on day-one sales in some regions.
Activision said the new sales milestone illustrates "the strong appeal of interactive entertainment to audiences worldwide".
Bobby Kotick, the chief executive of Activision Blizzard, said the annual releases of Call of Duty "have been one of the most significant entertainment events of each of the last six years".
He added: "Since Call of Duty was launched, cumulative franchise revenues from players around the world are greater than current worldwide box office receipts to date for the top-10 grossing films of 2012 combined."
But the slower-than-expected start for Black Ops 2 has led some commentators asking whether the franchise's appeal has plateaued or, perhaps, declined. However, Black Ops 2 remains on course to be the highest grossing packaged game of 2012 by some margin.