Graphics demos exist for a number of reasons. For one they can show off the latest tools and effects available to developers, and second they give people a glimpse at a possible future. But above all that they're pure eye candy. Originally unveiled at GDC 2013 to show of the cinematic and rendering capabilities of Unreal Engine 4, Epic Games have now made available to all Unreal Engine users, the entire "Infiltrator" project.

The entire project can be accessed via the Epic Games launcher in the Learn tab, and Epic Games has states that "it’s still highly representative of the capabilities of high-end PC GPUs".

And to refresh your memory here's the entire cinematic below, which is running in real-time via Unreal Engine 4. It still looks amazing.