Mixamo has announced that a collection of its animations and 3D characters are now available for free in Unreal Engine 4.3.
Unreal Engine - Showcase
This compilation video shows off some of the games built wih Unreal Engine technology.
Houdini Engine for Autodesk Maya
SideFX have released Houdini Engine for Maya, with 3ds Max and Unreal versions coming soon.
Unreal Engine 4 - Rivalry
Epic's Unreal Engine 4 Rivalry project shows what's now possible on mobile devices.