See the capabilities of the Unreal Engine 4 in creating complex visual effects.
Kite is a cinematic created in Unreal Engine 4 and features a diverse and beautifully realized 100 square mile landscape.
Unreal Engine - Free
Today Epic Games have announced that their Unreal Engine is now free for all uses, with a 5% royalty.
Substance in Unreal Engine 4 Tutorial Series
Allegorithmic have created a tutorial series that covers how to use Substance with Unreal Engine 4.