Hey, the method i use and which works for me is - Download the actual/original game from the play store, then open or download a file explorer(if u dont have it, ES File Explorer e.g.) then go to either ur internal memory or your SD card(where ever ur file gets saved to, mine gets saved on my internal) and open the folder "Android" > "OBB" or "Data" you will see the folder of your game, now rename it to like if its "com.samsung.music" i just put "*****" in front of it so easy to remeber - "xxxcom.samsing.music". Now you need to uninstall the original game and download n install the modded one from here and then go back to the renamed folder and remove the "*****" and you should be ok.