Undecember
Undecember — Key Facts
ClasslessBuild System
LINE GamesDeveloper
PC / MobilePlatform
Free to PlayBusiness Model
Rune LinksUnique Feature
Latest News & Updates
OfficialOfficial News
Season updates, balance patches and new content announcements.
Read → WikiUndecember WikiRunes, skills and item database.
Open → Communityr/undecemberBuild discussion and endgame tips for Undecember players.
Join → GuideRunelink System GuideHow the signature Rune and Link skill system works — the core build mechanic of Undecember.
Open →Character Overview
🔮 Rune SkillsAny Role
Skill Runes define your active abilities — equip any combination to create your class identity.
🔗 Link RunesModifier
Support Runes link to Skill Runes to modify and enhance them — the PoE gem-link equivalent.
🗡️ Stat RunesPassive Stat
Passive Runes provide flat stat bonuses — carefully chosen to support your build's core mechanics.
💎 Gear SkillsItem Build
Unique items grant additional skill effects — BiS gear hunting adds another build layer.
🌑 Build ArchetypesClassless Flex
Create Archer, Mage, Warrior or hybrid builds entirely from your Rune equipment choices.
⚡ Classless SystemFreedom
No class lock — respec your entire Rune setup at any time for total build flexibility.
Endgame Content
Chaos Dungeons
Core repeatable endgame content — run Chaos Dungeons for gear upgrades and enhancement mats.
CD Guide →Trial of Zodiac
Seasonal challenge endgame mode with unique ranked rewards for top performers.
ToZ Guide →Boss Raids
Multi-player boss encounters requiring coordinated group play for the best item drops.
Boss Guide →Crafting System
Enchanting and refining gear — use enhancement stones for stat upgrades on all items.
Craft Guide →Guides & Community
Updates from LINE Games.
Open → WikiUndecember WikiRunes, skills and items.
Open → Communityr/undecemberBuild discussion.
Open →