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Demonic Mahjong

Demonic Mahjong

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!

Released Jul 15, 2025 Developer Boxed Lighting Games Publisher Omegames Studio, NPC Entertainment Platforms Windows · Mac StrategyCard GameRoguelikeTabletopCasual
View on Steam ↗ $16.99 (US · as of 2026-09-26)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-25.

95.8%positive5,645 reviews
Recommended · 26 found this helpful

“The only negative reviews i see are people downloading a mahjong game then complaining they dont know how to play mahjong. Edit for the FREE DLC: There is an unreasonable amount of content in this game and its one of the best roguelike deck builders I've played. They even…”

— a player, Steam review · 79 hrs played
Recommended · 9 found this helpful

“I've seen people complain that this game doesn't have enough of a Mahjong tutorial, and they're wrong. The entire game is a mahjong tutorial, with each character specializing in a specific part of the game. Just by playing you'll pick up concepts, first focusing narrowly on a…”

— a player, Steam review · 38 hrs played
Recommended · 3 found this helpful

“The game truly is as fun and engaging as all the other reviews suggest. I want to address a question I had before taking a chance, which was whether the tiles had any western indices (arabic numbers and latin letters) to help people who aren't good at sight-reading Chinese…”

— a player, Steam review · 6 hrs played
Read more reviews ↗

Player activity

Monthly average concurrent players. Live data self-collected from the Steam API · history through 2026-08 via SteamCharts.

3,903all-time peak
0 1k 2k 2026 1.3k avg · Aug 2025

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-26.

148achievements
10.3%median completion
1.5%rarest: Four Evils
81.6% of players 66.4% of players 63.5% of players 61.5% of players 59.8% of players 58.8% of players 52.7% of players 50.9% of players 50.2% of players 46.9% of players 46.0% of players 44.3% of players 43.9% of players 41.0% of players 38.6% of players 37.7% of players 35.7% of players 33.8% of players 32.6% of players 31.5% of players 31.1% of players 26.2% of players 25.7% of players 24.4% of players 22.5% of players 19.6% of players 19.4% of players 18.8% of players 17.4% of players 16.7% of players 14.7% of players 14.3% of players 13.7% of players 12.1% of players 11.9% of players 11.4% of players 11.1% of players 10.3% of players 9.5% of players 9.3% of players 8.6% of players 8.0% of players 6.7% of players 6.7% of players 6.3% of players 6.0% of players 5.9% of players 5.8% of players 5.7% of players 5.5% of players 5.3% of players 5.3% of players 5.1% of players 5.0% of players 5.0% of players 4.9% of players 4.9% of players 4.7% of players 4.7% of players 4.4% of players 81.6% 0% most earned rarest
Almost everyone has
81.6%Extreme Wealth — Accumulate 1000 Gold in 1 session
80.5%Cultivation I — Accumulate 500 Merits
66.4%Collector I — Discover 30 Figurines in total
Rarest badges of honor
1.5%Four Evils — Clear a session concurrently possessing Hundun, Qiongqi, Tao Wu, and Gluttony
1.9%Monkey Mayhem — Clear a session concurrently possessing Moon Monkey, Sage Monkey, and Zen Monkey
2.0%Dragons Unite — Clear a session concurrently possessing Red Dragon, Green Dragon, and White Dragon

Price tracking

US-region pricing (USD), sampled twice daily by our own tracker since 2026-09-26. Steam prices vary by region — always confirm your local price on Steam.

$16.99current · sampled 2026-09-26 21:12 UTC
$16.99lowest since tracking began2026-09-26
US16.99 USD
EU16.49 EUR
UK14.29 GBP
Australia24.95 AUD
Canada21.99 CAD
Japan1,900 JPY
Brazil45.00 BRL
China58.00 CNY

Regional prices at last sample, in local currency — Steam sets each region's price independently.

China≈$8.6 Brazil Japan Canada US Australia EU UK≈$19

Cheapest → most expensive, converted to USD at ECB reference rates (2026-09-25). Relative comparison only.

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Aug 31, 2026
Demonic Mahjong 26.8.31 Update Notes

This update fixes a range of issues affecting matches, character skills, Auto-Play, and the mobile experience, while also improving parts of the UI and text. Match & Progression Improvements Fixed an

Aug 07, 2026
August 7 Update

Fixed an issue that prevented some Windows users from launching the game. The Mac version of the Heatwave Carnival DLC is now available. Other minor optimizations and bug fixes.

Jul 30, 2026
Fix for Ditin Match Freezes and Solution to Missing Saves for Returning Players

Hello everyone, the latest version that was just released fixes the following issues: Fixed an issue where matches against Ditin could freeze. Other minor bug fixes and optimizations. Some returning p

Jul 29, 2026
The All-New Free DLC, Heatwave Carnival, Is Out Now!

One year ago, on July 17, Demonic Mahjong launched on Steam. We were excited, but also a little nervous: would anyone enjoy this strange Underworld mahjong game with its fondness for internet humor? T

Jun 29, 2026
Voice Work and Scene Art Complete! DLC Launches July 29!

Hi everyone! We have some good news to share: Demonic Mahjong’s new free DLC, “Heatwave Carnival,” will officially launch on July 29! For the Chinese voice cast, Zhenxin voices King Dushi and Dragonvi

Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-09-25.

GenresCasual, Strategy
Player tagsStrategy · Card Game · Roguelike · Tabletop · Casual · 3D · Mahjong · Deckbuilding · Relaxing · Funny · Sexual Content · Cartoony (Steam store community voting)
FeaturesSingle-player · Steam Achievements · Steam Cloud · Family Sharing
LanguagesSimplified Chinese * , English, Japanese * , Traditional Chinese *
Achievements148
Minimum system requirements (PC)

Minimum: Requires a 64-bit processor and operating system OS: Windows 10 Processor: AMD Ryzen 5 5600X 6-Core Processor Memory: 8 GB RAM Graphics: Nvidia GTX 1660 Ti Network: Broadband Internet connection Storage: 4 GB available space