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'Call of Duty: Black Ops' is best selling video game ever, Best Selling Video Game Call of Duty: Black Ops, NPD, Treyarch Developed Black Ops Video Ga


First-person shooter video game 'Call of Duty: Black Ops' has set a new record by becoming the best selling video game in history.

According to market research firm NPD, the game has sold 13.7 million units in the United States alone.

Those numbers have helped it to take the top spot from former number one Wii Play.

Released in November 2010, Black Ops is the seventh in the hugely popular Call of Duty Series.

Developed by Treyarch it takes gamers on a series of Cold War adventures and has already broken a series of sales records.

NPD says the game's journey to become the highest-grossing entertainment release ever began with revenues of 223 million pounds in its first 24 hours on sale.

It then took six weeks to reach the 1 billion dollars (647 million pounds) mark.

In achieving that it joined an elite group of entertainment releases to reach the billion-dollar mark.

"Only Call of Duty and Avatar have ever achieved the billion dollar revenue milestone this quickly," the BBC quoted CEO Bobby Kotick of Activision, which published the game, as saying.