Greetings, Rune Hunters.

The latest version of Undecember was updated on 04/25 to fix the currently confirmed issue.

Android OS users are advised to check the schedule below and update to the latest version for optimal gameplay.

Additionally, sincere apologies are extended for the inconvenience caused by the in-game error,

and a reward has been prepared with apologies to the Rune Hunter.

Please refer to the details below.

[AOS] New Version Update and Issue Reward Notice

1. Update Schedule

- AOS: 04/25 (Sat) 10:40 (UTC+9)

2. Update Details

- Fixed an issue where the app would occasionally force close when playing the game on Android OS.

※ Please reconnect to apply the latest version.

3. Known Issues

- An issue where some effects such as skill effects and item drop effects do not appear in Android OS environment

※ This issue is under check and will be fixed as soon as possible.

4. Reward Information

■ Issue Reward

- Zodiac Sprinter Subscription (3 Days) × 1

* Rewards can be received via mail from 2026/04/25 (Sat) 10:45 to 2026/05/03 (Sun) 23:59.

* Reward is granted only once per account due to All Modes integration, and mail is stored for 3 days (72 hours) only.

┗ Can be received in only one mode: Standard or Season.

* Rewards are available only for accounts created before the maintenance start. Accounts created after the maintenance end are not eligible.

■ Login Compensation

※ For 2 days until Apr. 26 (Sun), you can receive compensation via Mail each day you log in.

※ Login compensation mail can be claimed until 23:59(UTC+9) on the day it is sent.

※ Compensation items are delivered via Mail and must be claimed manually.

※ Due to mode integration, compensation mail is provided once per account only, and mail is stored for 3 days (72 hours).

※ Compensation can only be claimed on accounts created before the distribution begins.

Accounts created afterward will not be able to receive the compensation.

■ Hot Time

- Duration: Apr 25, 2026 (Sat) ~ Apr 26, 2026 (Sun) 23:59

- Hot Time benefits apply when playing the game during Hot Time hours within the event period.

※ Please restart the game if Hot Time benefits are not applied.

※ Hot Time benefits are not available outside the event hours.

We once again apologize for the inconvenience this issue has caused,

and we will continue to work diligently to provide a more stable service.

Thank you.