Hi, kindly help us with the following information to find a solution to your query.
1. Firmware version your device is on.
2. If the same happens with any other game.
You may try the below troubleshoot:
1. Clear system cache.
2. Try the same under safe mode:
Hold the power button for 5 seconds => When the screen flashes with option => Press & hold power option => You will get an option to restart in safe mode
3. If still you face the issue
factory reset your phone after taking a full backup:
https://www.asus.com/support/FAQ/1006346/