Activision today announced Call of Duty 4 was the number one worldwide seller across all games released through 2007. According to data collected from GFK, The NPD Group and Chart Track, more than seven million units of the game have been sold at retail since its launch in November. In addition to strong sales, Call of Duty 4 also recently overtook Halo 3 as the number one played game on Xbox Live, according a report from www.majornelson.com.

From the press release:

We’re very excited about this achievement especially given so many competitive titles this year," said Will Kassoy, senior vice president, global brand management, Activision Publishing, Inc. "Consumer and critics agree that Call of Duty 4: Modern Warfare is one of the best games ever created and further establishes Call of Duty as one of the premier brands in the industry. This ground-breaking game and franchise continue to establish new standards by which all other action games will be judged."

Of course, Call of Duty 4 came in at a very close number two in our AusGamers Game of the Year feature, and scored a whopping 9.6 when we reviewed it last year.