I got some feedback on my entry Disco Icecave Laser Death Tag that suggests Unity WebGL builds only work in Safari on OSX.  Other than that it has really worked as a charm for me. I decided to do a game that would lend itself well to the limitations of  Unity’s current implementation of WebGL and learned some more about the 2D physics and UGUI systems in the process. Damn UGUI is good. Was especially happy to see the GL class is fully supported on WebGL since I love pure vector graphics.