DirectX 12: DirectX 12 enables PC developers to have a new level of power and control and is a single API developers can access across Windows devices. As shown with Fable Legends running on Unreal Engine 4, there has been a 20% improvement in performance. And as announced today, Epic is creating Unreal Tournament using Unreal Engine 4 running on DirectX 12, which sets a new bar for visual fidelity in PC gaming.