Android is going in the way of iPhone and making it really hard for us to release apps for it outside their store. The game has a problem with the new scoped storage system, it doesn't have permission to save the game and there is no way for me to ask permission without building natively for Android. As mobile is not really our focus, or my competence for that matter, I'm pretty much just waiting for Android and Unity to find a compromise, which hasn't happened yet.