Dokkan Battle is a collectible card game that lets you upgrade and Battle with your favorite DBZ characters. Its a mix of a card game and candy crush, with some pay to win elements. But dont let that discourage you, cause you can earn upwards of 300$ of stones for free just from playing. It is grindy, but really isnt that what these mobile games are supposed to be? Im level 147 with 150+ hours and have enjoyed almost every one of them.
Usually I dont leave reviews, but I figured Id put in my 2 cents as the other reviews dont seem to be fair. I have played on Galaxy s5 and iPhone 6s+ and have had no problems whatsoever on either device. There is a device transfer code to make sure you keep your data, and you can even link your save to your Facebook so you can be sure you wont lose your progress!
Thoratticus about DRAGON BALL Z DOKKAN BATTLE, v3.0.1