Greetings, Rune Hunters. UNDECEMBER will be undergoing temporary maintenance on Dec.9 (Tue) 2025. We apologize for the inconvenience caused by this maintenance. Please refer to the following information for details about the maintenance schedule. Dec.9 (Tue) Temporary Maintenance 1. Temporary Maintenance Schedule : Dec.9 (Tue) 2025, 09:30 - 12:00 (UTC+9) 2. Maintenance Details [Go to Notice] 3. 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 Auction House , Constellation of Time , Arena , Chaos Dungeons , and Eunos Dungeons for 10 minutes before and after the patch. We will always strive to maintain the quality and reliability of our services. Thank you.

Greetings, Rune Hunters. UNDECEMBER will be undergoing a server patch on Dec.4 (Thu) to address identified issues. Please refer to the following information for details. Dec.4 Server Patch 1. Server Patch Schedule: Dec.4 (Thu) 19:00 (UTC+9) * The server patch will proceed without maintenance. * The game will therefore be available to play while the server patch is underway. 2. Server Patch Details - An issue where certain effects, such as ‘Skill Rune Duration +%’, were not applied to the Attack Enhance / Defense Enhance Skill Rune has been fixed. 3. To Note - Please exit the game completely before logging in again for the patch to be applied. - Please note that you will not be able to enter the Auction House , Constellation of Time , Arena , Chaos Dungeons , and Eunos Dungeons for 10 minutes before and after the patch. Please be advised that players may experience temporary disconnections while the patch is underway. We will always strive to maintain the quality and reliability of our services. Thank you.

Greetings, Rune Hunters. We would like to inform you about the events that will take place after Nov. 27 (Thu). Please see below for more details. [/b]1. Undecember Holiday Event Raid2. Total Playtime Event3. Season Abyss Gate Hot Time Event Notice (Part 2) ※ The Hot Time event will only be available in Season Mode . [Go to Notice]

Greetings, Rune Hunters. UNDECEMBER will be undergoing a server patch on Dec.3 to address identified issues. Please refer to the following information for details. Dec.3 Server Patch 1. Server Patch Schedule: Dec.3 15:20 (UTC+9) * The server patch will proceed without maintenance. * The game will therefore be available to play while the server patch is underway. 2. Server Patch Details - Fixed an issue where the debuff of the Energy effect was abnormally applied to the character in certain situations. - Fixed an where the remaining time until the next reward is not displayed when claiming the 30-minute reward in the [Accumulated Playtime Event]. 3. To Note - Please exit the game completely before logging in again for the patch to be applied. - Please note that you will not be able to enter the Auction House , Constellation of Time , Arena , Chaos Dungeons , and Eunos Dungeons for 10 minutes before and after the patch. Please be advised that players may experience temporary disconnections while the patch is underway. We will always strive to maintain the quality and reliability of our services. Thank you.