This video shows off the power of Epic's Unreal Engine 4, as they say the cinematic was rendered in real-time, though they don't specify what sort of hardware that involved. Here's what they explain about the clip: "The kite cinematic created in Unreal Engine 4 features a diverse and beautifully realized 100 square mile landscape. Everything you see was generated in real-time by Unreal Engine 4 at 30fps and includes fully dynamic lighting, cinematic post effects and procedurally placed trees and foliage. Get Unreal and get going for free at www.unrealengine.com."