Easy to play
I love this game, as there is so much to do even if youre F2P like me. However, it does get hard to get extra dragon stones when you have done every story mission on every difficulty and you are on rank 193, so if you could add a stage that you can farm up to 5 stones a day only on week days, you could keep players from rage quitting and active playing would be satisfied as they can multi summon once every two weeks. Other than that, its amazing!
BzzzKill about
DRAGON BALL Z DOKKAN BATTLE, v3.3.1