Mozilla revealed that it's working on a technology that could have us playing high-end, console-quality games on the Firefox browser without the need for any plugins and installation. A blog post from Mozilla announcing the project describes the highly optimized JavaScript as something that "supercharges a developer's gaming code in the browser to enable visually compelling, fast, 3D gaming experiences on the Web." The project is being developed along with game developer Epic, so it's no surprise that Mozilla ported Epic's Unreal Engine on Firefox to demo a game called Citadel (shown in the video below). It took Epic a total of four days to tweak the gaming engine to work on Firefox. The demo will be available for download online, but the company didn't mention whether it will commercially release the Unreal Engine for Firefox browsers in the future.