Activision recently revealed that the ultra-popular Call of Duty franchise has made more than $3 billion in global retail since its launch in 2003. Activision gathered and compiled own data with that from NPD Group, Charttrack, GfK and concluded that Call of Duty has sold more than 55 million units.

The latest record-breaking sales of Call of Duty: Modern Warfare 2 are a clear indicator that the company is keen on milking this cow for all its worth, and they've been doing a pretty good job so far. 

Activision's shares responded as well and rose for more than 1% on Nasdaq, although its competitors EA and Take Two Interactive Software dropped by more than 2%.

More here.