http://i.imgur.com/bmHkK.gif
http://play-dune.com/

Some consider Dune 2 to be one of the first, if not the first Real Time Strategy game. Some righteous soul has taken it on to see this classic playable in your browser.

To accomplish this awe-tastic goal they nabbed the source from the Open Dune project and used emscripten to convert the Open Dune C source to JavaScript to bring the browser love. Now if the same could be done for Warcraft: Orcs and Humans!

http://play-dune.com/
https://github.com/OpenDUNE/OpenDUNE
https://github.com/kripken/emscripten/