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Report updated May 19, 2026

Overview · Full Intel report in progress

Undecember: The Forge is an established games app that is free with in-app purchases. With a 4.1/5 rating from 53.3K reviews, it shows polarized user reception.

What is Undecember: The Forge?

Undecember: The Forge is an action RPG by LINE Games that emphasizes classless character progression and deep build customization. The latest update introduces a new Card System, Tier 15 gear, and expanded endgame content like the Abyss Gate to enhance the core hunting and farming loop.

Current Momentum

v3.43 · 4d ago

Intense

Last updated 4d ago. 5 versions tracked.

Competition

Rivals identification in progress

7-Day Rank Pulse 🇺🇸

Games

No ranking data

GamesActionGrossing

Rating Pulse 🇺🇸

What makes this app unique?

What Does It Look Like?

What Are The Key Features?

Classless ProgressionStandard

Players develop characters through flexible skill and gear choices rather than rigid class archetypes.

Card SystemStandard

A new growth mechanic introduced in the latest season update to deepen character progression.

Expanded EndgameStandard

Includes new Tier 15 gear, advanced content, and improvements to Chaos Dungeon and Black Market rewards.

New Combat SkillsStandard

Adds Frost Storm and Axe Throw to the existing combat repertoire.

How much does it cost?

Freemium

Who Built It?

Enrichment in progress

Publisher profile available very soon

What other apps does LINE Games make?

Animal Busters : Idle RPG

Animal Busters : Idle RPG

App

Genesis War

Genesis War

App

Protocol:hyperspace Diver

Protocol:hyperspace Diver

遊戲

BURIED STARS

BURIED STARS

遊戲

Analysis in progress, available soon

What do users think recently?

Analysis in progress, available soon

View the full user-sentiment analysis

Mood gauge, ratings & review-volume history, every praise / complaint / request, and sentiment over time.

Go deeper

Analysis in progress, available soon

What is the competitive landscape for Undecember: The Forge?

Where is it available?

Localized markets (9)

United StatesBrazilGermanySpainFranceJapanSouth KoreaMexicoPortugal

How's The Games Market?

How does it evolve in the Games market?

Rank progression

99 active rankings tracked — 30-day window

No rank history available for this chart.

Strategic analysis coming soon

SWOT, key takeaways & outlook

The outtake for Undecember: The Forge

Key Takeaways

The app offers a robust, build-heavy ARPG experience, though users report that frequent seasonal updates can necessitate repetitive character re-optimization.

Where Is It Heading?

Trend analysis

Available very soon

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with editorial review, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by Undecember: The Forge, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

Cite this report

Marlvel.ai. “Undecember: The Forge Intelligence Report.” Updated May 19, 2026. https://marlvel.ai/apps/com-linegames-udg

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Data licensed under CC-BY-NC 4.0