Greetings, Rune Hunters.

Maintenance has been completed and UNDECEMBER is now available to play.

Please refer to the following information for details.

[Jun. 11 Scheduled Maintenance Completed]

1. Maintenance Schedule

: Jun. 11 (Thu) 07:00 - 14:00 13:49 (UTC+9)

2. Maintenance Details

1) [Souls Awakening in the Sweltering Heat] Event begins

2) Added 4 summer theme costumes and Beauty items

3) Added new items and packages

4) Improvements and Other Changes

 ■ Improvements

 - A [Zodiac Pass Shortcut] button will be added to the top left area of the game screen.

1. Clicking the button will open the Zodiac Pass event page immediately.
2. A blue dot notice will be displayed on the button when a reward is available.

※ The Zodiac Pass button will not be displayed if all rewards have been received.

 - The max stack size of the material item [White Night Crystal] will be improved from 999 to 9,999.

 ※ For items already owned, the effect applies after moving them to the warehouse and then back to the bag.

 - The reset notice text for bonus points in the final bonus [Reward Notice] popup of Paid Shop > Summon Unique will be improved.

 ■ Issue Fixes

- Fixed an issue where the Boss monster [Starlight Guardian]'s pattern behaved abnormally when using the Skill Rune [Summon Twisted Abyssling].

- Fixed an issue where the duration was not displayed on the icon when using Enhance Skill Rune in certain mobile environments.

- Additional measures for an issue where [First Payment Event] rewards are abnormally granted in certain situations

※ A recall action will be conducted for some Rune Hunters with remaining issues after the 05/28 (Thu) update.

- Fixed an issue where [Premium White Night Crystal Bundle] could be registered in the Auction House/Trading Post.

- Fixed an issue where character stats changed when converting maps in battle content such as Chaos Dungeon.

- Fixed an issue where frames dropped intermittently during Battle content such as Chaos Dungeon and Abyss Gate.

- Fixed an issue where the effects of the attachments [Corrosive Afterglow Footsteps] and [Chilling Afterglow Effect] were not displayed.

- Fixed an issue where some 15 Tier and [The Forge] option tooltips were incorrectly displayed.

※ The actual effect of the option will not be changed.

- Fixed an issue where Authority prefix/suffix options did not appear in the option probability of imbued items.

- Fixed an issue where paid product-related notices were displayed in the free product information in the Paid Shop.

3. Event End Notice

1) Wonderland Event

※ Unused event items will be deleted after the maintenance on Jun 11, 2026.

1. Puru the Clock Rabbit's Pocket Watch
2. Strange Amusement Park Oddities Chest / Strange Amusement Park Rare Chest
3. Wonderland Unique Chest / Wonderland Unique Selection Chest / Wonderland Random Unique Chest
4. Wonderland Gear Essence Selection Chest / Wonderland Rune Essence Selection Chest
5. Chaos Card (Strange Amusement Park)

2) [The Forge] Season Commemorative Event

※ Unused event items will be deleted after the maintenance on Jun 11, 2026.

1. [The Forge] Celebration Coin / [The Forge] Supply Coin
2. Discovery of Possibility Chest

4. Maintenance Compensation

: Gemstone of Courage x 3,000

: Gold x 300,000

: Croco's Precious Fragment x 3

* You can claim the compensation from your mailbox after the Jun. 11 (Thu) maintenance until Jun. 11 (Thu) 23:59 (UTC+9).

* Maintenance compensation will only be sent once per account for both modes, and the mail will be stored for 3 days (72 hours).

┗ You can only claim the compensation from either Standard or Season Mode.

* Maintenance compensation can only be claimed by accounts created before the maintenance.

Compensation cannot be claimed by accounts that were created after the maintenance.

* The Zodiac Walker effect's duration is not affected during maintenance.

5. Extended Maintenance Compensation

: Gemstone of Courage x 4,000

: Gold x 400,000

: Croco's Precious Fragment x 6

* You can claim the compensation from your mailbox after the Jun. 11 (Thu) maintenance until Jun. 11 (Thu) 23:59 (UTC+9).

* Maintenance compensation will only be sent once per account for both modes, and the mail will be stored for 3 days (72 hours).

┗ You can only claim the compensation from either Standard or Season Mode.

* Maintenance compensation can only be claimed by accounts created before the maintenance.

Thank you for waiting for the maintenance to be completed.

We will always strive to maintain the quality and reliability of our services.

Thank you.

======

Greetings, Rune Hunters.

We would like to inform you that UNDECEMBER will undergo scheduled maintenance on Jun. 11 (Thu) to provide even more reliable game services.

Please see below for more details on the maintenance schedule.

[Jun. 11 Scheduled Maintenance]

1. Maintenance Schedule

: Jun. 11 (Thu) 07:00 - 12:40 14:00 (UTC+9)

2. Maintenance Details

1) [Souls Awakening in the Sweltering Heat] Event begins

2) Added 4 summer theme costumes and Beauty items

3) Added new items and packages

4) Improvements and Other Changes

 ■ Improvements

 - A [Zodiac Pass Shortcut] button will be added to the top left area of the game screen.

1. Clicking the button will open the Zodiac Pass event page immediately.
2. A blue dot notice will be displayed on the button when a reward is available.

※ The Zodiac Pass button will not be displayed if all rewards have been received.

 - The max stack size of the material item [White Night Crystal] will be improved from 999 to 9,999.

 ※ For items already owned, the effect applies after moving them to the warehouse and then back to the bag.

 - The reset notice text for bonus points in the final bonus [Reward Notice] popup of Paid Shop > Summon Unique will be improved.

 ■ Issue Fixes

- Fixed an issue where the Boss monster [Starlight Guardian]'s pattern behaved abnormally when using the Skill Rune [Summon Twisted Abyssling].

- Fixed an issue where the duration was not displayed on the icon when using Enhance Skill Rune in certain mobile environments.

- Additional measures for an issue where [First Payment Event] rewards are abnormally granted in certain situations

※ A recall action will be conducted for some Rune Hunters with remaining issues after the 05/28 (Thu) update.

- Fixed an issue where [Premium White Night Crystal Bundle] could be registered in the Auction House/Trading Post.

- Fixed an issue where character stats changed when converting maps in battle content such as Chaos Dungeon.

- Fixed an issue where frames dropped intermittently during Battle content such as Chaos Dungeon and Abyss Gate.

- Fixed an issue where the effects of the attachments [Corrosive Afterglow Footsteps] and [Chilling Afterglow Effect] were not displayed.

- Fixed an issue where some 15 Tier and [The Forge] option tooltips were incorrectly displayed.

※ The actual effect of the option will not be changed.

- Fixed an issue where Authority prefix/suffix options did not appear in the option probability of imbued items.

- Fixed an issue where paid product-related notices were displayed in the free product information in the Paid Shop.

3. Event End Notice

1) Wonderland Event

※ Unused event items will be deleted after the maintenance on Jun 11, 2026.

1. Puru the Clock Rabbit's Pocket Watch
2. Strange Amusement Park Oddities Chest / Strange Amusement Park Rare Chest
3. Wonderland Unique Chest / Wonderland Unique Selection Chest / Wonderland Random Unique Chest
4. Wonderland Gear Essence Selection Chest / Wonderland Rune Essence Selection Chest
5. Chaos Card (Strange Amusement Park)

2) [The Forge] Season Commemorative Event

※ Unused event items will be deleted after the maintenance on Jun 11, 2026.

1. [The Forge] Celebration Coin / [The Forge] Supply Coin
2. Discovery of Possibility Chest

4. To Note

■ The maintenance schedule may change depending on circumstances.

■ Gameplay will be unavailable during maintenance, so please exit the game in a safe zone before maintenance begins.

■ Please note that you will not be able to enter the Abyss Gate, Auction House, Constellation of Time, Arena, Chaos Dungeons, and Eunos Dungeons for 10 minutes before and after the patch.

We hope the information above will help you avoid any inconvenience as you play the game.

Thank you.