We're on Hacker News. Couldn't you at least try to give a meaningful description of what doesn't work?
I'm seeing just a blue to white vertical gradient, so I'd hazard a guess that the whole thing isn't working. (And yes, WebGL is working.)
Just played it on ff 16.0.2 no problem.
If you've got a moment it'd be good to know your configuration. My default answer is to recommend Chrome, but all versions of Firefox are supported (for those without WebGL support we provide a small plugin as an alternative).
Seems like it was blocked by AdBlock. Disabling itresolved the issue
Actually, now I can see the menu, but neither "quick play" nor "create game" work. Says "Something has gone wrong - please try again". Firefox 16.02 on Windows 7.
Music is great though :)
I was finally able to play it, and one issue I noticed was that the sound becomes choppy when there are a lot of projectiles on the screen (which is, all the time :))