I just played for a bit to see how it works on browser. I'm actually surprised this runs well on it, I tried it on chrome and it played about as well as it did on desktop, just had to load more. The only issue I found is scrolling at the top of the screen with your mouse didn't work properly sometimes but I'm not sure if there's much you can do about it.
I promise to give it another proper go one of these days and I've give more useful feedback, too many demos to play right now.