This is a cool little game! One little issue I ran into though: when I went to quit the demo, the whole page just froze. I had to exit the tab and come back.
Okay, I know what's causing it now. The problem is that the "Quiet" button is programmed to close the application, but since there isn't an actual application to close within the browser, everything freezes. It is best to exit using the browser's "go back" option; however, I will see if I can fix that issue. Thanks a lot for letting me know.