Epic's Unreal Engine 4 Rivalry project shows what's now possible on mobile devices.
Real-time Global Illumination with Enlighten and UE4
Epic Games and Geomerics created the video to highlight the latest physically-based lighting techniques in games.
Primal Carnage Genesis - Trailer
See the Unreal 4 engine in action in this trailer for Primal Carnage Genesis.
Unreal Samaritan Tech Demo
Behold the capabilities on the latest iteration of the Unreal engine, in the Samaritan tech demo.