For the game itself:
It has a retro look, but without Re (tro) miniszenzen conjure the good old days, at least it does not work with me. Worse than the uninviting graphics but the Spielatmospähre! What has me at the time that captivated graphically similar (but visually still very much nicer!) Secret of Mana, simply because it is a wonderful and exciting story. So much so that I recently played the game on the PC again on an emulator and me today made even more fun than most of the soulless monster graphic that you get nowadays purposed.
In this game you walk here, however, just about kills any enemy and you do not even know why you're doing all this. So at least my impression.
Personally, I enjoyed the game no fun at all, so I deleted it again quickly. As a free app of the day it can be to try / not show, but I would advise against any of them, but to pay money. As you would probably annoy afterwards very!