Hello, Hero Candidates!

Thank you for playing the Devil Book.

The method to use the Coupon depends on the OS version.


■ AOS 

 - To use the Coupon, Please follow the route : Main Screen - Menu Icon - Option(Cog Icon) - Coupon Use


 - In case of the IOS device, Coupon can't be used because of the Apple Policy.

 - To use the Coupon, we suggest that you use the Emulator or AOS device and then refer to the AOS method above.

 - Please refer to the URL to play the Devil Book with your IOS account on Emulator or AOS device 

   URL : My existing account is gone (OS Change)

For additional inquiries, please email at devilbook@ngelgames.freshdesk.com