Activision Blizzard announces that Call of Duty: Modern Warfare 2 has passed $1 billion in worldwide retail sales according to their internal estimates. This is all the more impressive considering the game has only been available for about two months. "Call of Duty: Modern Warfare 2 has exceeded our expectations and shattered theatrical box office and video game records," says Activision CEO Bobby Kotick. "There are only a handful of entertainment properties that have ever reached the $1 billion mark, which illustrates the power of the Call of Duty franchise and mass appeal of this game."