Sorry about that. This uses WebGL, which has had some issues with Chrome on some GPU cards / OS combination. The Chrome team take these issues very seriously, and you can ping them with your specs: http://productforums.google.com/forum/#!categories/chrome/re...
I tried it twice (I'm a masochist, I guess).
It somehow took over all the computer time (realtime priority?), and chrome wasn't even using 100% of the CPU time in Task Manager.
Everything froze up except the mouse, which moved like it was underwater.