Activision's ‘Call of Duty: Black Ops 2’ has been one of the gaming revelations of the year, and now it has numbers to back up its massive popularity. Per reports, the company has revealed that sales of its ‘Call of Duty: Black Ops 2’ has rocketed to the billion-dollar mark within just15 days of its release.

The latest sales tally from Activision comes only a few weeks after it announced that ‘Black Ops 2’ had managed to pull in an impressive $500 million in its first 24 hours on sale.

Although Activision didn’t provide specific sales numbers for either figure, it did, however, point out that ‘Black Ops 2’ managed $1 billion in sales a day faster than its precursor. Previously, the box office record set for feature films in 2009 by "Avatar" was $1 billion in 17 days, for the sake of comparison.

"The release of Call of Duty has been one of the most significant entertainment events of each of the last six years," said Bobby Kotick, CEO of Activision Blizzard. "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. Life-to-date sales for the Call of Duty franchise have exceeded worldwide theatrical box office receipts for 'Harry Potter' and 'Star Wars,' the two most successful movie franchises of all time."

It was also reported that since the game's launch, more than 150 million hours have been logged online playing ‘Call of Duty: Black Ops 2’ on Xbox LIVE and PlayStation Network. Total sales for the 'Call of Duty' franchise, revealed in 2003, exceed worldwide box office receipts for 'Star Wars' and 'Lord of the Rings,' according to Activision.

Moreover, more than 250 people spent about two years developing the new installment, working with arms experts to imagine the weaponry of the near future, from warrior robots to ultra-sophisticated drones.

"In order for Call of Duty to remain the entertainment juggernaut that it is, and keep our fans coming back for more, we need to continue to bring fresh ideas and new innovations to the table every time, while always staying true to what people fell in love with in the first place,” said Eric Hirshberg, CEO of Activision Publishing. “That's what we did with Call of Duty: Black Ops II, and that's what we intend to keep on doing. This is an incredible milestone for an incredible franchise, and I want to thank every passionate, talented, committed person on our team who made it happen."

However, per an Inquisitr report, Activision may be flaunting undeniably big numbers for the latest Call of Duty release, but “some analysts and investors suspect that the franchise is showing signs of beginning a downward trend.”