Nvidia GameWorks is a middleware software suite developed by Nvidia that offers advanced visual effects for video game development. The Visual FX, PhysX and Optix SDKs provide a wide range of enhancements pre-optimised for Nvidia GPUs. GameWorks is distributed in the form of compiled DLLs rather than traditional source code. The competing solution offered by AMD is TressFX which is open source instead of proprietary in nature.