There are two main reasons for installation failure as following.

1) Your device is not supported
2) Your device is running an out-of-date version

In case you can’t install the game although your device is supported, please try to install the game after upgrading your OS to the latest version.

Even though you have tried the said measures but can’t install it, please make an inquiry to the customer service center with the following information.

[Required information]
1. Device model:
2. The version of your OS
3. A screenshot with the installation failure message

We beg your pardon in advance for the possible delay to find and understand the issue in detail.

Thank you

[Installation and execution] Minimum Specifications of Mobile Device

[Minimum Specifications]
Android: Galaxy S7
OS: Android 8.0

How to check your OS version
[Settings -> About device (mobile phone information) -> Software information -> Android version]

Push function gives you a notification to introduce to you any in-game event.
If you wish to deactivate the push alarm, please go to settings > default > change alarm status to “block”.

Thank you

When a new update does not apply to the game, please review the following information.
1. Insufficient memory space
2. Device OS version

You can resolve these issues by the following measures.
Please uninstall unnecessary or unused applications to secure the memory for an effective update.
As we update the game, the minimum version may be upgraded. In this case, you will not be able to apply a new update to the game.
We suggest to keep your OS version up-to-date and check on the availability of the game with your current OS version.

If the issue can’t be resolved by given measures, please make an inquiry to the customer service center with the following information.
1. Device model:
2. OS version of your device:
(To find out your OS version, please go to settings > device information > software information > Android version (OS version)

Thank you.

The following reasons may cause an abnormal termination abruptly.
1. Insufficient memory
2. Network and telecommunication conditions

The memory is a processing space for running the game, not for storing. Therefore, spare space in memory is necessary.

If the game collides with other apps while playing it, it may cause a problem. Therefore, please make sure that unused apps are uninstalled and check on other applications running unnecessarily on the background.

Unstable network conditions are one of the main reasons why games crash, so we recommend playing on a stable network.

We are putting in our best effort to assure the best environment for you to play our game and we will keep up to provide the best service.

Thank you.