It's funny. There are hundreds of games out there that would have a press release and maybe even a drunken staff party thrown for them upon selling a million copies. Portal 2 does three times that number and Valve boss Gabe Newell barely acknowledges it.
Speaking at the Games for Learning Institute's Games for Change conference in New York today, Newell casually glazed over the fact that Portal 2 has sold three million copies. No big deal. It's only 3 million.
He didn't break it down by platform and considering Valve's usual secrecy over sales figures we don't expect him to. Ever.
What we do know though, thanks to GfK-ChartTrack data, is that the Xbox 360 version of Portal 2 comfortably outsold the PS3 version in its opening week with 54 percent of sales coming to Xbox (Steam sales not considered), while Mortal Kombat, with 900,000 copies sold, forced Portal 2 into the number two spot in April's US NPD sales charts.