I'm hoping to release standalone versions at some point - certainly a .apk for Android - but probably not until I've made some further changes. I've done that once before and it was difficult enough that I'd like to make sure the game itself is 100% polished before I try.
Thanks for understanding. This was pretty much the best work I could do at the point I initially released it, but thanks to the feedback here on Itch I feel as though I can refine it a step further now. I hope it'll be worth the wait!