Hello, try the steps bellow :
1. Download the game (PC / Phone)
2. Unarchive / Unrar / Unzip the archive to a folder
3. From the unzipped folder transfer to phone the desired .apk file, there are 2 versions included Normal (high quality) and Low Quality (the apk's name ends with _LowQuality). The normal version (high quality) is recommended, yet if you're experiencing lags or fps drops, please try the low quality version.
Cheers,
~NK