How interesting.
http://www.eurogamer.net/articles/2016-02-09-amazon-launches-free-game-engine-lumberyard
Develop games in your browser. Powerful, performant & highly capable.
Downloading it right now to check it out
Given that Parse just gave up, its not a bad idea to start with someone who has the backend as part of the deal.
It's a 10 Gb download that unzips to 40 Gb before installation! I think I need to upgrade my laptop first ... Apparently it's based on the CryEngine, but without the $10 per month tax. Very promising!