It's an amazing game with few issues/annoyances. The main issue for me is that while it has an auto battle option that suggests it's an optional afk game is that you can't leave the app while leaving it running and you can't use it on the "repeat level" mode. It just gives out to many hours for it to be viable without making it work while out of game. I have over 60 hours of auto battle stocked up and I can't really use them, while they aren't exactly harming my gameplay it is supremely annoying