Works on Linux (Ubuntu 12.04) for me with Intel graphics, Chrome 31.0.1650.63 (current stable). Maybe your card isn't supported by WebGL? Test it: http://get.webgl.org/
Well, duh, yeah, that's it :p I am running my Linux host under Virtual Box and I don't believe I have 3d acceleration enabled, if it would even work if I did. Thanks for pointing that out!
Linux, Firefox 25.0 seems fine.
Works fine for me using Firefox 26 on Debian Jessie