Another great find. It's quite fun and has a sort of old school FF artstyle. Just like Brave frontier that I posted before, it's also "online" and you can gather units to get stronger. It's pretty easy to get 4*+ units, so I'd say give it a try.
Also, if you'd like. Use my referral code. It will give you 500 hero points (used to get a big headstart ingame), but ofcourse I'll also get 500 points for the first and after that it's 100 hero points.
Referral code: 130348965