UNDECEMBER: 4th Anniversary
UNDECEMBER is a Hack & Slash Action RPG in which players are able to surpass the conventional limits of skills by endlessly combining variety of Skill and Link Runes. Become a Rune Hunter and experience the joy of farming and growth!
- Release Date:10/12/2022
- Franchise:LINE Games Corporation
- Developer:Needs Games
- Publishers:
- Last Updated:1/30/2026
- Steam App Id:1549250
UNDECEMBER: 4th Anniversary
- Windows
- Mac
- Linux
- Steam Deck (Playable)
Steam Charts, Stats, and Live Player Count
At the moment, UNDECEMBER: 4th Anniversary has 1,646 concurrent players online and in-game. This is 70% lower than its previous all-time peak of 5,507 players achieved on 6/4/2023.
UNDECEMBER: 4th Anniversary Review
UNDECEMBER: 4th Anniversary has achieved a Steambase Player Score of 52 / 100. This score is calculated from 20,350 total reviews on the Steam store — giving it a Mixed rating. These are split between 10,682 positive reviews, 9,668 negative reviews, and will be updated in real-time as more players leave their feedback.
Track historical reviews and overall rating trends for UNDECEMBER: 4th Anniversary using the chart below.
About UNDECEMBER: 4th Anniversary
UNDECEMBER: 4th Anniversary is an Adventure, Action, RPG, and Free to Play game developed by Needs Games. On 10/12/2022, it was released on the Steam Store by LINE Games Corporation, and LINE Games.
It can be played and ran on Windows systems. At the moment, it is possible to play UNDECEMBER: 4th Anniversary on the Steam Deck but some functionality may not be fully supported.
It also supports 11 languanges in-game including English, Japanese, Chinese (Traditional), Chinese (Simplified), and French. Each language comes with varying levels of support for the in-game interface, audio, and fully translated subtitles.
According to Steam’s category system, UNDECEMBER: 4th Anniversary supports the following features:
- Partial Controller Support
- Full controller support
- Single-player
- Co-op
- PvP
- Multi-player
- Online Co-op
- Cross-Platform Multiplayer
- Online PvP
- In-App Purchases
From the Steam community, UNDECEMBER: 4th Anniversary has been tagged with the following user tags:
- PvP
- Character Customization
- Loot
- Hack and Slash
- Third Person
- Multiplayer
- Isometric
- Fantasy
- Free to Play
- Realistic
- RPG
- Co-op
- Action RPG
- Dark Fantasy
- PvE
- Top-Down
- Cinematic
- Online Co-Op
- Action
- Singleplayer
Media & Sceenshots
Watch the featured video for UNDECEMBER: 4th Anniversary and see the latest screenshots from the Steam Store.
Supported Languages
UNDECEMBER: 4th Anniversary is available in 11 different languages with varying levels of support for the in-game interface, audio, and fully translated subtitles.
| Name | Interface | Audio | Subtitles |
|---|---|---|---|
| English | Yes | Yes | Yes |
| Japanese | Yes | No | Yes |
| Chinese (Traditional) | Yes | No | Yes |
| Chinese (Simplified) | Yes | No | Yes |
| French | Yes | No | Yes |
| German | Yes | No | Yes |
| Portuguese-Brazil | Yes | No | Yes |
| Spanish (Spain) | Yes | No | Yes |
| Thai | Yes | No | Yes |
| Russian | Yes | No | Yes |
More Steam Charts
Track historical trends for UNDECEMBER: 4th Anniversary community hub members and its growth over time. It currently has 84,670 followers in its community.
Frequently Asked Questions
Soures & References
Steambase has best-in-class data powered directly by Steam, our data partners, and in-house experts. Data is enriched, cleansed, verified, and updated in real-time to ensure we surface the most up-to-date information. Learn more about the Steambase approach to data collection.
UNDECEMBER: 4th Anniversary data has been sourced from:
- Valve Corporation. (2026, January 30). UNDECEMBER: 4th Anniversary on Steam. Steam Store. https://store.steampowered.com/app/1549250
- Valve Corporation. (2026, January 30). UNDECEMBER: 4th Anniversary. Steam Community Hub. https://steamcommunity.com/app/1549250
- Needs Games. (2023, July 9). UNDECEMBER: 4th Anniversary. UNDECEMBER: 4th Anniversary. https://undecember.line.games/en