Dave Knott writes: Amazon has both announced and released a new, free game engine, Lumberyard, which offers deep integration with its Amazon Web Services server infrastructure to empower online play, and also with Twitch, its video game-focused streaming service. Lumberyard is powerful and full-featured enough to develop triple-A current-gen console games, with mobile support is coming down the road. Its core engine technology is based on Crytek's CryEngine. However, Lumberyard represents a branch of that tech, and the company is replacing or upgrading many of CryEngine's systems. Monetization for Lumberyard will come strictly through the use of Amazon Web Services' cloud computing. If you use the engine for your game, you're permitted to roll your own server tech, but if you're using a third-party provider, it has to be Amazon. Integration of Amazon's Twitch video streaming tools at a low level also helps to cement that platform's dominance in the game streaming space. Alongside Lumberyard, the company has also announced and released GameLift, a new managed service for deploying, operating, and scaling server-based online games using AWS. GameLift will be available only to developers who use Lumberyard, though it's an optional add-on. The game engine is in beta, but is freely usable and downloadable today.