The latest version of Babylon.js has added a 2D accelerated engine to the JavaScript framework for building 3D games. It also adds refraction textures and support for HDR (High Dynamic Range) maps for Physically Based Rendering. Babylon.js is a JavaScript framework for building 3D games with HTML5, WebGL and Web Audio. Babylon is open source that was developed by Microsofties, mostly in their spare time. Babylon overcomes the limitations of WebGL by providing the features needed for creating real games such as collision detection, particles and special effect. Read the full details here.