Demonic Mahjong

Strategy· Card Game· Roguelike· Tabletop

Released Jul 2025

Demonic Mahjong is a Roguelike deckbuilding game inspired by the timeless mechanics of Mahjong. Masterfully use the tiles in your hand to craft powerful combinations, reach staggering high scores, and develop strategies that are uniquely your own!

95% positive · 5,662 reviews

Not yet

Released, but content still planned

High confidence

Content Planned

Not yet

Released, but content still planned

High confidence

Content Planned

Where to buy

Steam Updated 12 Oct 2026 $16.99

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Evaluation

Demonic Mahjong launched on July 15, 2025 and has received a steady cadence of major free content updates since then. The first major post-launch update introduced a new character, Ksitigarbha, and Japanese voiceovers on September 14, 2025. A large free DLC called "The Horse & Snake" — featuring seven new characters, nearly 40 new Figurines, and 16 new Patterns — launched on February 10, 2026. The most recent major release is the "Heatwave Carnival" DLC, which shipped on July 29, 2026 and added six new characters, nearly 40 Figurines, 15 new Patterns, a new Underworld area, and a new Scoring system. It is listed as a released Steam DLC (DLC-2). Critically, the developer's July 29, 2026 anniversary post explicitly stated: "We expect to release another major update in the second half of this year, with a little mystery hidden inside." This is a direct commitment to future content, and it comes from the most recent developer communication. The developer also mentioned beginning work on a new UE5 project, indicating the studio remains active and healthy. Bug fixes and minor patches have continued right up to August 7, 2026, showing the team is actively engaged. The game holds Overwhelmingly Positive reviews (95% positive from over 5,500 reviews), and the developer has been transparent about their ongoing plan to keep releasing free updates to grow the player base.

Evidence

Anniversary post confirms another major update is planned for the second half of 2026, described as containing 'a little mystery hidden inside.' Developer also mentions beginning work on a new UE5 project.

news post · Jul 29, 2026 source content planned

high

Free DLC 'Heatwave Carnival' officially launched, adding 6 new characters, nearly 40 Figurines, 15 new Patterns, a new Underworld area, and a new Scoring system.

news post · Jul 29, 2026 source content shipped

high

Content

2 of 2 released · no outstanding content

Released

我在地府打麻将 Soundtrack

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Released

我在地府打麻将：恼热狂欢

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Media

Details

Developer

Boxed Lighting Games

Publisher

Omegames Studio

Achievements

148

Platform

Windows, macOS

Controller

—

Steam Deck

Playable

Players

Single-player

Strategy Card Game Roguelike Tabletop Casual 3D Mahjong Deckbuilding Relaxing Funny Sexual Content Cartoony Anime Fantasy Comedy

About this game

Welcome to join our game discord community:

Demonic Mahjong is a Roguelike deckbuilding game inspired by the timeless mechanics of Mahjong. Masterfully use the tiles in your hand to craft powerful combinations, reach staggering high scores, and develop strategies that are uniquely your own!

It’s Mahjong, also not Mahjong,you can enjoy it without knowing how to play mahjong!

Scoring follows basic Mahjong rules, so if you know how to play Mahjong, you’re already halfway there!
Roguelike gameplay is seamlessly integrated into the Mahjong foundation. Find your best strategy to win big!
It’s not just about getting high scores; the key is to find a way to defeat the boss!

Deep Deck-Building Strategy:

100 unique spirit allies, each capable of helping you form distinctive strategies or completely changing your core gameplay.
100 relics provide powerful buffs and permanent growth throughout your journey.
35 offerings grant special abilities, allowing you to manipulate your hand/deck and even improve your "luck."
17 tile spirits and 12 tile variants enhance your Mahjong tiles, enabling you to unleash even more powerful effects.

Build Your Ultimate Underworld Team:

Each character has their own unique [Active Skill] and [Passive Skill].
Build powerful tile combinations around characters to form unique strategies and core gameplay styles.
Every character can upgrade their skill levels, and a character affinity system is also planned!

Navigate to the deepest underworld by carefully choosing your path!

How about a cup of Forgetful Tea at Granny Meng’s Tea House? Or maybe helping a shy ghost with her request?

10 regular events and 90 special events make every Mahjong journey full of surprises.
Your actions and choices in these events will have a significant impact on the subsequent battles.

Diverse Boss Battles:

Accompanying you on each journey through the underworld are 24 unique bosses, including Granny Meng, Ox-Head and Horse-Face, and the Four Judges.

Each boss has their own active and passive skills. Study them to find your path to victory!
Whether you lose to them or defeat them, special animations will celebrate the moment! (≧▽≦)