Amazon throws their hat into the game dev/engine market. Bit of a surprise for me, as I didn't even know they were planning on this. http://aws.amazon.com/lumberyard/ http://kotaku.com/amazon-releases-its-own-game-engine-for-free-1757995787 It uses CryEngine, and some proprietary visual scripting which is based on (I think) C++ and Lua. 0% chance I'll use this for my game - already way too committed to Unity plus it doesn't fit my game's needs. But this might be worth a look if you're starting fresh or planning on using AWS heavily.