Welcome to the NVIDIA UE4 Flex integration!
Flex is our new GPU-based particle simulation library that supports fluids, clothing, solids, ropes, and more. The UE4 integration adds new actors and components to Unreal that can be used add more advanced dynamics to your game.
An example project with test assets and levels is included here:
Documentation and tutorials for the Unreal integration can be found in under:
The latest standalone Flex SDK can be downloaded from NVIDIA's developer zone:
https://developer.nvidia.com/flex
Not all the Flex features are exposed in Unreal yet, but we're continuing work on integration and will be adding features like fluid surface rendering and smoke simulation in upcoming releases.
You can get in touch with us via the NVIDIA Gameworks forum threads https://forums.unrealengine.com/showthread.php?53735-NVIDIA-GameWorks-Integration.