Tripwire Interactive Celebrates 10 Years Of Killing Floor
Today, publisher and developer Tripwire Interactive celebrates the 10-year anniversary of the Killing Floor franchise. Since the horror based co-op first person shooter first launched on May 14, 2009 for PC on Steam, the Killing Floor franchise, including the original Killing Floor, Killing Floor 2, and Killing Floor: Incursion, has sold nearly 10 million units, […]