Greetings from UNDECEMBER.

To comply with the latest app store policies,

UNDECEMBER’s minimum supported OS requirements will be updated.

Following this update, access to the game and app updates

may be restricted on devices operating below the new minimum OS requirements.

Please refer to the details below for more information.

◆ Android OS (Google Play) Changes

- Previous Minimum Requirement : Android 15 or higher

- Updated Minimum Requirement : Android 16 or higher

- Effective Date : October 30, 2026 (Fri) during the scheduled patch

※ How to check your Android OS version : [Settings] → [About Phone] at the bottom → [Software Information] → Check [Android Version]

※ The schedule and details above are subject to change.

※ Please make sure to complete the mandatory app update in the store after the patch on Oct 30 (Fri).

◆ iOS (App Store) Changes

- Previous Minimum Requirement : iOS 14.0 or higher

- Updated Minimum Requirement : iOS 15.0 or higher

- Effective Date : To be announced in a future notice

※ How to check your iOS version: [Settings] → [General] → [About] → Check [iOS Version] or [iPadOS Version]

※ The schedule and details above are subject to change.

※ Further details regarding the iOS minimum OS requirement changes will be provided in a secondary announcement.

If your current OS version is below the updated minimum requirements,

please update to the latest OS version to ensure uninterrupted gameplay.

We would like to remind you once again that this OS requirement update is being carried out to comply with updated store policies.

We will continue to do our best to provide you with a stable and pleasant gaming environment.

Thank you.