There are two main reasons why the installation might fail:  

1) Your device is not compatible with this game 

2) You are using an outdated OS version on your device. 

If your device is compatible with the game and you still cannot install it, please upgrade your OS to the latest version and reinstall the game. 

If the issue proceeds, please contact Customer Service with the following information:  

■ Required information 

1. Device Model 

2. OS Version 

3. A screenshot of the installation failure message