Now I tried it on my desktop, found the same demos to be not working. Kind of strange, because my desktop != my mobile. Finally figured out that I actually had to CLICK somewhere for something to happen. Easy to miss after seeing ~10 auto-playing demos, I suppose. Still: D'oh!

ALSO: Very cool, well done.

Works on my updated Android 6x, latest chrome.

Worked like a charm on my iPhone 6 FWIW