(CNN) -- Instant messaging, texting, Facebook, and ... "Call of Duty?" The "Call of Duty" games effectively adapt to changing communication habits, Bobby Kotick, the CEO of game publisher Activision, told CNN on Tuesday. And that could be the smoking gun in the franchise's takeover of the video-game industry. The latest entry in the console-game series, "Call of Duty: Black Ops," has netted more than $1 billion in sales worldwide since it came out on November 9, Activision announced on Tuesday. In that time, gamers have spent 600 million hours with the game, the company said. "More people play 'Black Ops' every day than watch Jay Leno, David Letterman and Jimmy Fallon, combined," Kotick boasted. "The audience of 'Call of Duty' is probably greater in terms of size ... than in any other interactive form of entertainment."
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"Call of Duty" effectively adapts to changing communication habits, says Activision's CEO
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The games can be as integral to social lives as Facebook and text messaging
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Activision hopes to adapt lessons from "World of Warcraft" into "Call of Duty"
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