If you are installing directly fromGoogle Play Store, you will not need to install OBB on your device, it will automatically be installed on your device. However, if you are installing the Game from third-party sites then you can follow the Simple Steps.Download APK and OBB from here. Thereafter install the app and place the OBB file in the InternalStorage > Android folder > OBB folder. Now Open the Game and it should run the game smoothly.