HTML5: Epic Citadel On Unreal Engine 3

By | May 6, 2013 | 3 Comments

After Mozilla’s partnership announcement with Epic Games earlier this year, both companies have finally demonstrated the capabilities of HTML5 and JavaScript in a new video, which shows a web version of “Epic Citadel” demo that does not require any plugins to run.

The best part? According to the video, it took them only 3 days to do so, thanks to asm.js and Emscripten, which first appeared in Firefox 22 Alpha.

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Vygantas is a former web designer whose projects are used by companies such as AMD, NVIDIA and departed Westood Studios. Being passionate about software, Vygantas began his journalism career back in 2007 when he founded Having said that, he is also an adrenaline junkie who enjoys good books, fitness activities and Forex trading.

  • Przemysław Lib

    Small typo:

    asm.js is part of Firefox, however Emscripten is independent project. Emscripten is a crosscompilator, which can read C/C++ as input and on output we can get JavaScript or ASM.js subset.

    • En_joy

      asm.js is not a part of Firefox. Alpha versions of Firefox optimize for asm.js. All browsers and JS engines support it, since it is just a subset of everyday JavaScript.

      • Przemysław Lib

        Oh. Sorry.

        I was just stating that Emscripten generate code (in asm.js) which firefox interpret.

        ASM.js is “just” subset of JS, while firefox subsystem that handle it is called Odin Monkey.