Undecember: Abyss Gate (New Age) is a high-octane ARPG that successfully bridges the gap between classic hack-and-slash mechanics and modern mobile flexibility. The 'Rune' system is the game's crowning achievement, allowing for a level of build diversity that puts many of its competitors to shame. Instead of being locked into a rigid class, you can mix and match skills and link runes to create a playstyle that is uniquely yours.
The visuals are top-tier for mobile, with dark, atmospheric environments and explosive skill effects that make every encounter feel impactful. While the grind is real, the 'New Age' update has streamlined much of the progression, making it more accessible for new players while keeping the deep end-game content for veterans. Whether you're clearing waves of monsters in the Abyss or taking on massive bosses, the combat remains fluid and satisfyingly visceral.
Available on: iPhone, iPad, iPod
Version 3.43.03Fri Feb 13 2026
◈ 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
Capturing both the fun and the excitement, while pursuing the unchanged values of a RPG
■ UNEXPECTED – Perfected RPG
Venture through countless maps with diverse themes
And experience the unexpected thrills from combat
■ UNLIMITED – Limitless Skills
Surpass the limit by creating thousands of
skill combinations from varieties of Skill and Link Runes
■ UNDEFINED – Freedom of Style
Instead of choosing a class, enjoy building up
your own character based on combat style
■ UNSTOPPABLE – Endless Contents
From Raids to Guild Battlegrounds!
Test your limits through multiple available contents
Catch the latest UNDECEMBER news from the Official Community!
[BrandSite]
https://undecember.line.games/
[FLOOR]
https://ud.floor.line.games
[Facebook]
https://www.facebook.com/UNDECEMBER
[DIscord]
https://discord.com/invite/Q7syAnHfha
[YouTube]
https://www.youtube.com/channel/UCO1YHH625KZdI66PjAEHDWQ
ⓒ LINE Games Corporation & Needs Games Inc. All Rights Reserved.
■ Minimum System Requirements
- iPhone 6S / OS 11 / RAM 4GB
==========================
[How to Remove Access]
- Setting > Access > Apps > Allow or Remove Access
■ 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
Requires iOS 12.0 or later. Compatible with iPhone, iPad, and iPod touch.A chance to trade for top-tier rewards through participation in the Lunar New Year Event!
■ UNCHANGED – Unchanged Values
Immersive storyline and growth through hunting and farming
Capturing both the fun and the excitement, while pursuing the unchanged values of a RPG
■ UNEXPECTED – Perfected RPG
Venture through countless maps with diverse themes
And experience the unexpected thrills from combat
■ UNLIMITED – Limitless Skills
Surpass the limit by creating thousands of
skill combinations from varieties of Skill and Link Runes
■ UNDEFINED – Freedom of Style
Instead of choosing a class, enjoy building up
your own character based on combat style
■ UNSTOPPABLE – Endless Contents
From Raids to Guild Battlegrounds!
Test your limits through multiple available contents
Catch the latest UNDECEMBER news from the Official Community!
[BrandSite]
https://undecember.line.games/
[FLOOR]
https://ud.floor.line.games
[Facebook]
https://www.facebook.com/UNDECEMBER
[DIscord]
https://discord.com/invite/Q7syAnHfha
[YouTube]
https://www.youtube.com/channel/UCO1YHH625KZdI66PjAEHDWQ
ⓒ LINE Games Corporation & Needs Games Inc. All Rights Reserved.
■ Minimum System Requirements
- iPhone 6S / OS 11 / RAM 4GB
==========================
[How to Remove Access]
- Setting > Access > Apps > Allow or Remove Access
■ 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


















Undecember: Abyss Gate is a dark fantasy Action RPG that emphasizes 'unlimited' growth. Rejecting the standard class system, it allows players to build their characters through Skill and Link Runes. Explore diverse regions, engage in challenging raids, and customize your combat style to take down the forces of darkness in a gritty, loot-filled world.
Classless Character Growth
Complex Rune-Based Skill System
Intense Boss Raids
Stunning 3D Graphics
Combine Skill Runes with Link Runes on the Zodiac grid to empower your attacks. Experimenting with different links is the key to surviving later acts.
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Use Zodiac points to boost your base stats like Strength, Intelligence, and Dexterity to meet the requirements for high-level gear and runes.
Yes, the main story can be completed solo, though raids and certain endgame modes feature co-op play.