Yes, the Epic Citadel demo isn't exactly bleeding edge, and the textures are low res, but Unreal Engine 3 is the engine used by plenty of best-selling PC, console, and mobile games -- and heck ...

Microsoft announced the release of Babylon.js 6.0, the new version of its real-time 3D engine for displaying 3D graphics in an HTML5-compatible web browser. Babylon.js 6.0 greatly ...