Killing Floor Sold 1 Million Copies

A major achievement for Tripwire Interactive
Tripwire Interactive sent over a press release announcing that Killing Floor has sold more than 1 million copies on PC in two and a half years. They also shared some interesting facts: nearly 2 million Killing Floor DLC packs sold; 45 million hours of Killing Floor played to date; 440 million Zeds have been dispatched in Achievements alone - including more than a quarter-million Christmas Santa; Zeds are being killed by you at the rate of over 20,000 an hour; hundreds of custom maps have been created by the community.