Activision have confirmed today that of 2 have pushed commutative series sales over the 3 billion USD mark.

Apparently, has now sold an incredible 55 million copies worldwide - equalling more than 3 billion dollars in revenue.

"Call Of Duty has become one of the greatest entertainment franchises of all time," grins CEO Bobby Kotick, speaking through a mouthful of Cavier, truffles and actual gold.

"If you consider the number of hours our audiences are engaged in playing Call of Duty games, it is likely to be one of the most viewed of all entertainment experiences in modern history."

By Luke Guttridge