Hey Dathu!
Thanks for asking. We'll probably never be making the game playable in-browser. Difficulties we've faced with getting past projects to function in all browsers and on all devices have discouraged me from pursuing that platform.
The thought of running the game on an Android does intrigue me, I admit, though at this time, our team has not discussed making Perils of Aestus Forest an APK. That said, I have never personally worked on software for Android before, and I can't speak on the difficulties making our game run as an APK would pose. I will bring it to Cyrus for discussion, though.
-InkSpider