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roBrowser is a free and open-source implementation of the Ragnarok Online MMORPG for web browsers written from scratch using the latest web standards (WebGL, HTML5, File API, Javascript, Threads, ...).
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Type Name Latest commit message Commit time
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client Removed X-Application headers Sep 11, 2014
examples Introduce new compiler in tools folder. Jun 4, 2014
tools Fixed not working testers Mar 13, 2016
.htaccess Compress scripts Jun 10, 2014
LICENSE Updated README Sep 10, 2014 Fix typos in Sep 30, 2014
manifest.json Add support for node-webkit and firefox os Oct 4, 2014


roBrowser is a web-based clone of the popular MMORPG Ragnarok Online built with WebGL, JavaScript, HTML5, and more. The project is entirely free and opensource, so you're welcome to setup roBrowser on your own server or try a demo.

You can learn more at





To run roBrowser you will need a browser that supports WebGL and is OpenGL ES 2.0 compatible. We've tested the following browsers:

  • Chrome
  • FireFox
  • Opera
  • IE11

If you don't run roBrowser in a Chrome App, you will need a Java plugin installed instead.


  1. Download roBrowser and extract it.
  2. Convert DB to get custom content to roBrowser.
  3. Compile scripts to reduce loading time.
  4. Install the remote client and set the parameter remoteClient to your server.
  5. Install the websocket proxy and set the parameter socketProxy to your proxy server URL.
  6. Configure roBrowser - documentation and some examples.


roBrowser is developed by a team located around the world. Check out the documentation and submit a pull request!


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