With Modern Warfare 2 now out in stores and available to download and play via Steam for the PC version, Activision is now bragging about how many copies and how much money the first person shooter generated in its first 24 hours on sale. A new press release from the publisher states that according to their own internal estimates the game generated $310 million in revenue and sold 4.7 million copies in North America and the UK in its first 24 hours.

So how many PC versions were sold? We can actually make an educated guess based on the percentage chart that Amazon.com has for the game. According to their chart, 8 percent of Modern Warfare 2's sales come from the PC version. That's an admittedly small number. However if the game sold 4.7 million total copies that means the retail PC version might have sold as many as 376,000 copies in its first 24 hours. The actual number is likely to be higher since Activision's estimates don't take into account sales from countries other than the US, Canada and the UK. We also have no idea how many copies were purchased via Steam. In any event, the PC port of Modern Warfare 2 is likely to be one of highest selling PC games of 2009.