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Undecember: 4th Anniversary

In-app purchases
4.0
51.6K reviews
1M+
Downloads
Content rating
PEGI 16
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About this game

New Season "New Age" on Jan. 15

Experience a new age of gameplay through our large-scale skill balance overhaul! Plus claim special 4th Anniversary rewards right now!

◈ 4th Anniversary Exclusive Shop and a chance to trade for top-tier rewards
◈ New costume set granted through participation in 4th Anniversary events
◈ New pet "Observer" granted to all players for participating in the Attendance Event
◈ Large-scale reworking of over 100 Skill Runes and Link Runes
◈ Significantly increased Essence drop rates when using special materials
◈ Dark Energy requirement removed when entering Chaos Dungeons
◈ First-time clear rewards added for each Abyss Gate stage
◈ Reduced requirements for unlocking Abyss Stone slots


■ UNCHANGED – Unchanged Values
Immersive storyline and growth through hunting and farming
Fun and excitement, while pursuing the unchanged values of a RPG

■ UNEXPECTED – A Perfect RPG Beyond Expectations
Venture through countless maps with diverse themes
And experience the unexpected thrills of combat

■ UNLIMITED – Limitless Skill Combinations
Surpass the limit by creating thousands of
skill combinations from various Skill and Link Runes

■ UNDEFINED – Freedom of Style
Instead of choosing a class, enjoy building up
your own character based on your combat style

■ UNSTOPPABLE – Endless Contents
From Raids to Guild Battlegrounds!
Test your limits through multiple available contents

Check the latest UNDECEMBER news from the Official Community!
[Brand Site]
https://undecember.line.games/
[FLOOR]
https://ud.floor.line.games
[DIscord]
https://discord.com/invite/Q7syAnHfha
[YouTube]
https://www.youtube.com/channel/UCO1YHH625KZdI66PjAEHDWQ

ⓒ LINE Games Corporation & Needs Games Inc. All Rights Reserved.

■ Minimum Requirements
- OS Android 7.0 (Nougat) RAM 2GB

■ Optional Access
The following access is requested upon use.
You may still continue using the service without the specific feature even if access is declined.
- Photos/Media/Files: Allows attaching files saved in the device when posting at the Official Community.
- External Storage: Required to write game data in the external storage.

[How to Remove Access]
- Android 6.0 or above: Settings > Apps > Select Category > Permissions > Allow or Remove Access
- Lower than Android 6.0: Update the OS to Remove Access or Uninstall the App

■ Information on Paid Contents and Usage
※ Purchasing paid contents will incur additional charges.
- Provider : ⓒ LINE Games Corporation
- Terms of Service and Service Period : Refer to the information provided in-game
(If service period is not shown, the game service end date is to be regarded as the service period)
- Payment amount and method : Refer to the amounts and methods provided for each content in-game
(Billed amount may differ depending on exchange rate and fees when using foreign currency)
- Content provision method : Issued directly to the game account(character) that carried out the purchase
or issued to the Paid Shop Storage in-game
- Information on refunds : Refer to Article 5 of the Terms of Service
- Compensation for damages and handling of complaints : Refer to Articles 11 and 15 of the Terms of Service
- Inquiries : Submitted online through the in-game Support feature

[Developer Contact]
E-mail : game_service@linegames.support
[Business Registration Number]
120-87-89182
[Business Address]
2F, AP Tower, Teheran-ro 218, Gangnam-gu, Seoul, 06221
[Privacy Policy]
https://cs.line.games/policy/store/privacy?companyCd=LINE_GAMES&svcCd=STORE&langCd=en
[Terms of Service]
https://cs.line.games/policy/store/terms?companyCd=LINE_GAMES&svcCd=STORE&langCd=en
Updated on
Jan 12, 2026
Events & offers

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info, Financial info and 2 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.0
48.5K reviews
Chris Mccafferty
January 28, 2025
I won't lie, I'm addicted and I love it. Some things I hate, The UI isn't resizeable, so despite your choice of method to play, still expect to struggle to see. There is embedded autoaim, so if u love range skills, they still rock, but it gets really annoying. Idk, I'm only a few days in. It just needs more settings, this game has insane frikan potential and I'm in love, it just needs more love on the side of more settings so it's better for pc and mobile. ADJUSTED from 4 to 3 stars
18 people found this review helpful
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Mogéréo Valkyrion
October 28, 2022
I like that game. I like the graphics and atmosphere. Skills and personalisation are awesome (grindy but ok). What I dislike is the awful difficulty of the game. I needed ally to finish ch. 1 act 5 and can't pass ch. 2 act 1. First boss unbeatable. You already got a bit of my money with cosmetics, why make the game so hard! Even elite mobs are a nightmare with Poison Aura! Coupled with the already annoying Wood Prison... I think you shouldn't be able to be stuck with 10 or 15+ lvls than area.
7 people found this review helpful
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Daniel Antil
February 24, 2025
Wow! I am impressed! This is a unique game with a highly detailed atmosphere, top notch graphics, unique story and setting, easy to use mechanics (movement/attack), good character customization. You start out on a moving fortress (carried on the back of a giant beast), you interact with various soldiers to work your way around and kill off the bad guys, gaining skills and power as you go, then you kill one of the beasts carrying you and fall to ground to begin the next part of your adventure.
40 people found this review helpful
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What’s new

New Season "New Age" on Jan. 15

◈ 4th Anniversary Exclusive Shop and a chance to trade for top-tier rewards
◈ New costume set granted through participation in 4th Anniversary events
◈ New pet "Observer" granted to all players for participating in the Attendance Event
◈ Large-scale reworking of over 100 Skill Runes and Link Runes
◈ Significantly increased Essence drop rates
◈ Dark Energy requirement removed
◈ First-time clear rewards added for each Abyss Gate stage