Unreal Engine 4 - Field
Koola has created this beautiful field environment in Unreal Engine 4.
Unreal Engine Sizzle Reel
Epic Games have posted a showreel of games and media created using Unreal Engine.
Eat 3D - UnrealScript MasterClass - Part 3 - Re-creating Assault in UDK
Eat 3D have released their 3rd DVD in the UnrealScript Masterclass Series, focusing on re-creating Assault in UDK.