Amazon’s releasing their very own game engine. Lumberyard, as they call it, is based on Crytek’s famous CryEngine, and can be used to develop games for both PC and consoles. It’s also free to download, and comes with “no seat fees, subscription fees, or requirements to share revenue.”
Ever wanted to be a mobile game developer and weren't sure where to start? This. This right here. Project Anarchy is completely free end-to-end game development engine, just waiting to bring your ideas to life.
Version 4.0 of the Unity platform is available for purchase and download today. This is important, because eventually every game not made with the Unreal Engine will be made with Unity. I am only exaggerating a little bit.