See the Unreal 4 engine in action in this trailer for Primal Carnage Genesis.
Unreal Engine - Showcase
This compilation video shows off some of the games built wih Unreal Engine technology.
Unreal Engine 4 - Rivalry
Epic's Unreal Engine 4 Rivalry project shows what's now possible on mobile devices.
3dmotive - Game Asset Tutorial
There's a new game asset tutorial at 3dmotive, focusing on creating a briefcase game asset to be used in the Unreal engine.