You can download the Unreal Engine 4 Elemental Tech Demo which is now is available from our servers in multiple locations.
This Unreal Engine 4 demo shows the engine's capabilities using DirectX 11 with demanding particle effects.
Before running the demo you might have to install the (included) Microsoft Visual C++ 2013 Redist Runtimes.
Settings can be edited using the included batch file (e.g. ResolutionSizeX=1920; ResolutionSizeY=1080)