Killing Floor 2 Is First With NVIDIA FleX
 

NVIDIA FleX started as a research project, which grew into a tech demo that created a buzz on the internet with a video of a rabbit washing around in a wave pool and cereal floating in milk. Nice. But the folks at Tripwire aren't into bunnies and cereal. They're into blood and guts. So they used NVIDIA FleX a little differently than we did. You can use it, too. The same milestone gaming technology used by Tripwire to get the gory look they wanted for Killing Floor 2 is widely available to game developers free of charge. At the Game Developers Conference in San Francisco this year, we announced we were making custom branches for NVIDIA GameWorks technologies available on the GitHub code-sharing service to make it easier for game developers to add our leading-edge technologies to their Unreal Engine 4 (UE4) games.

http://www.hardocp.com/news/2015/06/...t_nvidia_flex/