I just found out this game in yesterday tomorrow. I downloaded the apk file of the game and decided to do some research:
As mentioned above, version 0.50 of the game is using the Unreal Engine 4.12, when the game launched, it downloads the remaining game files from the patch server. Interesting, patching files of Version 0.20 are still stored in the patch server, build date was 2016-06-13, complied with Unreal Engine 4.11, this is a welcome screen of the 0.20 Version:
As you can see, this is not the logo of the current version (0.50). I also extracted the game files of Version 0.20, but didn't check those files yet.
Meanwhile, I did some reverse engineering today and successfully got into the game. Here are some screenshots captured (Version 0.50):
For my opinion, based on the information I received, this game looks fine, not too bad.