Here you can find the emscriptened web version of my Ludum Dare 30 game (vote here).
In any case, you'll need a recent browser with WebGL enabled.
Differences to the windows version:
So yes, this version has the couple little bugs I've found from the windows version..
In addition, you can check the readme.txt and time log here, so you don't have to download the windows version for those. Ah heck, you can even peek at the source code if you want. That's the windows version source code, not the emscripten-hacked one.
All that said, have fun!