Greetings, Rune Hunters.

We would like to inform you that UNDECEMBER will undergo scheduled maintenance on

Aug 20 (Thu) to provide even more reliable game services.

Please see below for more details on the maintenance schedule.

[Aug 20 (Thu) Scheduled Maintenance Notice]

◆ Maintenance Schedule

- Aug 20, 2026 08:00 - 12:30 12:50 (Total 4 hours 50 minutes)  (UTC +9)

◆ Maintenance Details

1. Server stabilization work

2. Fixed an issue

- An issue where characters who reached Level 100 intermittently cannot enter the Rune Master Level.

◆ Maintenance Reward

Rewards have been prepared to express gratitude to Rune Hunters waiting during the maintenance.

※ Maintenance rewards will be available for collection from the mailbox after the maintenance on Aug 20, 2026 (Thu) until 23:59. (KST)

※ Maintenance rewards are available in only one mode: Standard or Season.

※ Maintenance rewards are available only for accounts created before the maintenance.

※ The duration of the

▷ Maintenance time may change depending on the service situation.

▷ The game will be unavailable during maintenance. Please exit the game in a safe area before maintenance begins.

▷ Entry to the following contents may be unavailable for 10 minutes before and after the maintenance.

- Abyss Gate, Auction House, Constellation of Time, Chaos Dungeon, Eunos Dungeon, Arena

Please refer to the above for a smooth gaming experience.

Thank you.