By which I mean does the version that's compiled for browsers not work on mobile browsers? I noticed the Gravitron game loads on mobile but the layout is broken. Is that just a case of not being optimized to work for mobile browers? Or is there a limitation in the frameworks that prevents it from working in mobile browsers?

I'm not sure the answer, but since it's for sale on android and ios, I imagine there's not a lot of incentive for the author to make it work on mobile browsers if it's easily done.

I haven't optimized it for mobile browsers, but it wouldn't be hard. Was pretty heads down on getting mobile native out the door.

Great, thanks! This all came at a perfect time -- I was just about to start working on converting a bunch of our music education games to iOS. My plan was to do that, then convert our existing games from Flash to HTML5. If I can get this up and running, it would save a great deal of time.