Modern Warfare 2 for the PC may have become the highest selling game in the Call of Duty series for Infinity Ward and Activision but one group claims that those sales pale in comparison to the pirated copies that have been transfered via BitTorrent locations. The site TorrentFreak claims that a whopping 4.1 million illegal copies of the first person shooter were downloaded via torrent sites in 2009.

That number is a new "record" for a pirated PC game and was generated after less than two months (the game was released in early November). The Sims 3, released in June, is number two on the list with 3.2 million downloads. Somewhat suprisingly, Prototype was third with 2.35 million downloads, according to the report.