Tripwire Interactive was formed about 10 years ago and they released the original Killing Floor on PC in 2009. Since then, they've launched a ton of additional content for free, in added some fun DLC, sold nearly 3 million units of the game and about 10 million units of DLC. Now Killing Floor 2 is coming to PS4. Hear from the team about how the game came together, and what it's all about.
