http://aws.amazon.com/lumberyard/
http://aws.amazon.com/de/lumberyard/faq/ Q. Is Lumberyard based on CryEngine? Lumberyard is made up of proven technology from CryEngine, AWS, Twitch, and Double Helix. We’ve hired some of the best game technologists in the world, who have already made over 41 pages of additions, fixes, and improvements to Lumberyard.
For example, we’ve integrated a brand new networking layer, GridMate, so your engineers can more easily build low-latency, high-player count, multiplayer games. We’ve also created a new launcher and project configurator so your team can get set up without engineering help.
We’ve also created new workflows so your artists can iterate faster and create higher-quality content, including a new particle editor, 2D/UI tool, and cross-platform asset pipeline. Please see our full release notes of additions, fixes, and improvements to learn more, and tune in to our GameDev Blog for more news on what we are working on.