STEAMDB NEXUS

Steam app 2491200 · updated 12 Sep 2026, 23:09 UTC

TOUHOU GENSOU MAHJONG

Engage in all manner of Mahjong! From standard matches to total chaos, featuring over 130 Touhou characters from 20+ entries! The match of your dreams awaits!

TOUHOU GENSOU MAHJONG Steam header artwork
D.N.A. SoftwaresMediascape Co.,Ltd.
0playing now
624-hour peak
146all-time peak
2average, last 30 days

The last 30 days

0Gain−1.32%% gain16Peak

159 hourly samples, with the daily peak drawn over them. Weekends are shaded.

049131714 Aug18 Aug22 Aug26 Aug31 Aug04 Sep08 Sep12 SepFriday 14 August 20261 peakSaturday 15 August 20264 peakSunday 16 August 202612 peakMonday 17 August 202610 peakTuesday 18 August 20263 peakWednesday 19 August 20261 peakThursday 20 August 20266 peakFriday 21 August 202616 peakSaturday 22 August 202614 peakSunday 23 August 202610 peakMonday 24 August 202613 peakTuesday 25 August 20262 peakWednesday 26 August 20265 peakThursday 27 August 20268 peakSaturday 29 August 202614 peakSunday 30 August 20265 peakMonday 31 August 20267 peakTuesday 01 September 20268 peakWednesday 02 September 20269 peakThursday 03 September 20262 peakFriday 04 September 202611 peakSaturday 05 September 20261 peakSunday 06 September 20269 peakMonday 07 September 202613 peakTuesday 08 September 20267 peakWednesday 09 September 20268 peakThursday 10 September 20269 peakFriday 11 September 20262 peakSaturday 12 September 20266 peak
Daily peakEvery hourly sample

All time

25 months, September 2024 to September 2026. The highest number of people in the game at once, each month, on a time axis -- a gap in the record stays a gap.

03979118158Sep 2024Jan 2025May 2025Sep 2025Jan 2026May 2026Sep 2026September 2024146 monthly peakOctober 202459 monthly peakNovember 202422 monthly peakDecember 202419 monthly peakJanuary 202518 monthly peakFebruary 202515 monthly peakMarch 202517 monthly peakApril 202515 monthly peakMay 202545 monthly peakJune 202519 monthly peakJuly 202520 monthly peakAugust 202516 monthly peakSeptember 202513 monthly peakOctober 202517 monthly peakNovember 202518 monthly peakDecember 202518 monthly peakJanuary 202620 monthly peakFebruary 202621 monthly peakMarch 202616 monthly peakApril 202619 monthly peakMay 202619 monthly peakJune 202614 monthly peakJuly 202619 monthly peakAugust 202616 monthly peakSeptember 202613 monthly peak
Monthly peak

The last four months

Show:

The highest number of people in the game at once, each month. Four, because four is as far back as the source keeps anything finer than one figure a month.

05101521July 2026August 2026September 2026October 2026July 202619 peak — daily detail belowAugust 202616 peak — hourly detail belowSeptember 202613 peak — daily detail below
Monthly peakHas finer data

July 2026

31 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.

0510152101 Jul06 Jul11 Jul16 Jul21 Jul26 Jul31 JulWednesday 01 July 202613 peakThursday 02 July 20266 peakFriday 03 July 202618 peakSaturday 04 July 202616 peakSunday 05 July 202619 peakMonday 06 July 20268 peakTuesday 07 July 202610 peakWednesday 08 July 20269 peakThursday 09 July 20266 peakFriday 10 July 202615 peakSaturday 11 July 20269 peakSunday 12 July 20268 peakMonday 13 July 20262 peakTuesday 14 July 20266 peakWednesday 15 July 20261 peakThursday 16 July 20267 peakFriday 17 July 20269 peakSaturday 18 July 202611 peakSunday 19 July 20268 peakMonday 20 July 20269 peakTuesday 21 July 202610 peakWednesday 22 July 20268 peakThursday 23 July 20263 peakFriday 24 July 20269 peakSaturday 25 July 20268 peakSunday 26 July 20268 peakMonday 27 July 20268 peakTuesday 28 July 20268 peakWednesday 29 July 20262 peakThursday 30 July 20266 peakFriday 31 July 202612 peak

August 2026

27 days as the curve, each the highest figure that day. Behind it, 94 hourly samples from 14 Aug, which is as far back as the source keeps every hour. Weekends are shaded.

049131701 Aug06 Aug12 Aug16 Aug20 Aug24 Aug29 AugSaturday 01 August 20262 peakSunday 02 August 20269 peakMonday 03 August 20264 peakTuesday 04 August 20267 peakThursday 06 August 20261 peakFriday 07 August 20264 peakMonday 10 August 20266 peakTuesday 11 August 20267 peakWednesday 12 August 20265 peakThursday 13 August 20261 peakFriday 14 August 20261 peakSaturday 15 August 20264 peakSunday 16 August 202612 peakMonday 17 August 202610 peakTuesday 18 August 20263 peakWednesday 19 August 20261 peakThursday 20 August 20266 peakFriday 21 August 202616 peakSaturday 22 August 202614 peakSunday 23 August 202610 peakMonday 24 August 202613 peakTuesday 25 August 20262 peakWednesday 26 August 20265 peakThursday 27 August 20268 peakSaturday 29 August 202614 peakSunday 30 August 20265 peakMonday 31 August 20267 peak

September 2026

12 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.

047111401 Sep03 Sep05 Sep07 Sep09 Sep11 SepTuesday 01 September 20268 peakWednesday 02 September 20269 peakThursday 03 September 20262 peakFriday 04 September 202611 peakSaturday 05 September 20261 peakSunday 06 September 20269 peakMonday 07 September 202613 peakTuesday 08 September 20267 peakWednesday 09 September 20268 peakThursday 10 September 20269 peakFriday 11 September 20262 peakSaturday 12 September 20266 peak

October 2026

TOUHOU GENSOU MAHJONG was released on 18 Sep, 2024.

Not out yet.There is nothing to draw for this month.
Nothing here is interpolated or estimated; where a sample is missing the line is broken.

Game information

Updated 12 Sep 2026, 23:09 UTC
App ID
2491200
Last updated
14 Jan 2026 build 21487134
Developer
D.N.A. Softwares
Publisher
Mediascape Co.,Ltd.
Release date
18 Sep, 2024
Platforms
Windows
Download size
2.27 GB
Install size
2.84 GB
Genres
Casual, Indie, Sports
Game modes
Single-player, Multi-player, PvP, Online PvP
Controller support
Partial

Features & support

Steam features

Steam CloudFamily Sharing

Controllers & input

Partial Controller Support

Accessibility

Popular tags

MultiplayerPvPMahjongBoard GameTabletopCasualSportsAnime2DSingleplayerIndieFaithTurn-Based Tactics
About this gameFull description from Steam
Touhou Gensou Mahjong is a game where you play Mahjong matches with 3 to 4 players, starring 130+ characters appearing from over 20 entries in the Touhou Project series! Battle across 20 stages on based on famous series locales, all featuring alternate rulesets! Warp the matches even further with character unique abilities! Anything goes in Gensokyo! These characters and locales are all brought to life from the efforts of over 150 artists, illustrators and musical arrangers alike! The Mahjong battles of Gensokyo will finally begin on Steam! ※ Those unfamiliar with Touhou Project or Mahjong should definitely check out the first trailer on top of this page. Fight it out your way! Pick the rules you like! While the base of this game is typical Japanese Riichi Mahjong, the existence of character abilities and special rulesets provides endless variety for those seeking something different! Many different rule sets are present! From serious sets meant to simulate competitive Mahjong, all the way to many kinds of wacky house rules! Find your fave! Over 130 Touhou characters are playable! Characters from across the Touhou Project series have all gathered here! Each has a special perk that alters the game in some manner! Many different playstyles can be adopted through them, with some friendlier for beginners than others, so please check them out! And naturally for any Mahjong purists out there, it is entirely possible to play this game without any character abilities active. Whether you're looking for serious matches or serious madness, this game provides! Get online and take on the world! Naturally, you can challenge players all over the world in online battles in all the game's offered modes! Play with your friends, or meet new rivals! The choice is yours! You can even allow for Relay Mode when setting a game up, letting other players join the match as spectators! The unique screen layout of the mode is ideal for streaming matches, or just kicking back and watching players go at it! Also featuring robust single player content! *Cirno's Mahjong Class* No experience with Mahjong? No problem! Join Cirno and friends as they take lessons from Ms. Keine on how to play! Learn piece-by-piece how to form the winning hands you need to take down your opponents! Also, the BGM for this mode was composed by the renowned Touhou music arrange group IOSYS! *Adventure Mode* Suddenly, strange Mahjong tables have appeared all across Gensokyo! Challenge every character featured in this title in specially made one-on-one battles as you investigate the latest incident! Over 15 musical artists have provided songs for the stages in this mode! *Free Match Mode* Set the rules to your liking and challenge the CPU in this mode. Perfect for learning how the various rule sets and character abilities work in practice! Over 100 illustrators have contributed to the character designs in this game! Every piece of character art in this game was made by an astounding lineup of well known Touhou artists, totaling at over 100 different contributers! Play Mahjong as your favorite character! Over 40 musical arrange artists have teamed up to give the perfect soundtrack for Mahjong battles! Every Mahjong arena features its own unique BGM! Featured artists range from many different backgrounds! Featuring the talents of... Dedicated Touhou music arrangers! Butaotome SOUND HOLIC A-One Shinra Bansho Vocaloid producers and rhythm game veterans! Cosmo@bousouP Morimori Atsushi t+pazolite good-cool Renowned legends of the game industry! Motoi Sakuraba Manabu Namiki Takeshi Abo (MAGES.) Godspeed/Masahiro Aoki And more! Sound direction as a whole is also handled by EKUSU (EtlanZ), who has also brought their talents to games like The Legend of Dark Witch EP2 and The Touhou Empires! Have a blast with Mahjong battles possible only in this dream of a game!
Content & age ratings2 regional ratings

Regional ratings

DEJUS12Conteúdo sexual
IGRS18Penampilan Tokoh · Interaksi Daring
System requirementsMinimum and recommended hardware

Minimum

Minimum: Requires a 64-bit processor and operating system OS: Windows 10, 11 (x64) Processor: Core i5 or Ryzen 5 or equivalent Memory: 8 GB RAM Graphics: GeForce GTX 1060, Radeon RX 570 or equivalent DirectX: Version 11 Storage: 2 GB available space Sound Card: with stereo output

Recommended

Recommended: Requires a 64-bit processor and operating system OS: Windows 10, 11 (x64) Processor: Core i7 or Ryzen 7 or equivalent Memory: 16 GB RAM Graphics: GeForce RTX 2060, Radeon RX 6600, Intel Arc A750 or equivalent DirectX: Version 12 Network: Broadband Internet connection Storage: 2 GB available space Sound Card: with stereo output Additional Notes: Razer Chroma support(planning)

macOS

Minimum: Recommended:

Linux

Minimum: Recommended:
Supported languages2 languages
LanguageFull audio
Japanese●
English

A blank audio cell means full audio was not marked in the returned language list.

Screenshots & trailersScreenshots and trailers

Trailers

AchievementsTotal count and selected achievements
DemosPlayable demos on Steam

27 developer announcements, Jun 2024 to Jan 2026 · times in UTC

January

  1. Maintenance Update Jan,14 2026

    We have updated Touhou Gensou Mahjong to v1.2.16a.*This update fixes issues exclusive to the Steam version, so it is being released ahead of the Switch version. The Switch version will also be updated shortly. Note that it is still…

    Patch notes

October

  1. Mima Returns! - Oct,29 2025

    We have updated Touhou Fantasy Mahjong to v1.2.16.To coincide with the release of the Switch package version (in Japan), the Steam version will also be updated.Feature AdditionsChinese (Simplified & Traditional) Support“ Cirno's Mahjong…

    D.N.A.
  2. Urgent Update Oct,5 2025

    A vulnerability has been disclosed in applications using the Unity engine.Touhou Gensou Mahjong is scheduled for an update on October 30th. As an emergency measure, we will update only the Unity runtime without changing the game content.If…

    Patch notes

May

  1. Maintenance Update May,16 2025

    Touhou Gensou Mahjong has been updated to v1.2.15b. *The Switch version has also been updated, but it is labeled “1.2.15a”. The fixes are the same for both versions. As we have not made any adjustments to the network battles, you can still…

    Patch notes

April

  1. Cross-platform matching support - May,1 2025

    We have updated Touhou Gensou Mahjong to v1.2.15a. Cross-platform battles are now available! We've been working hard on this update, and we're finally able to announce that cross-platform matches between the Switch version of Touhou Gensou…

    D.N.A.

November

  1. Maintenance Update Nov.,24 2024

    Touhou Gensou Mahjong has been updated to v1.2.14c. * Due to software limitations, the version number displayed in the software will remain as “1.2.14”. As we have not made any adjustments to the network battles, you can still play against…

    Patch notes
  2. Maintenance Update Nov.,22 2024

    Touhou Gensou Mahjong has been updated to v1.2.14b. * Due to software limitations, the version number displayed in the software will remain as “1.2.14”. Network play is possible with the previous version, v1.2.14, but we recommend updating…

    Patch notes
  3. Update 24/11/19 - Private match support via "Lobby Password" feature

    Touhou Gensou Mahjong has been updated to v1.2.14. (2024/11/19 20:48(JST) Corrected description of how to search using “lobby password”.) New features The list of tables now also shows rooms where a game is in progress (and you can't…

    D.N.A.

October

  1. Maintenance Update Oct.,21 2024

    Touhou Gensou Mahjong” has been updated to v1.2.13. Bug fix Fixed an issue where the client assigned to watch the game would sometimes not display the tiles that were needed for win. Fixed an issue where the memory usage would unnecessarily…

    Patch notes

September

  1. Maintenance Update Sept.,22 2024

    Touhou Gensou Mahjong has been updated to version 1.2.11. New Features In "Adventure" and "Cirno's Mahjong Class", when you fail a challenge, you can now retry directly from the results screen. Bug Fixes Fixed an issue where the game would…

    Patch notes
  2. Maintenance Update Sept.,21 2024

    Touhou Gensou Mahjong” has been updated to v1.2.10. Bug fix Fixed a case where songs acquired in Adventure mode were not unlocked correctly after the next launch. If you were not able to select the song as BGM, you can restore it by…

    Patch notes
  3. Maintenance Update Sept.,20 2024

    "Touhou Gensou Mahjong” has been updated to v1.2.9. Bug fixes Fixed the difference between the description and the actual rules/goals in the adventure modes “Heaven - 2” and “Hakugyokurou - 2” Fixed the difference between the description…

    Patch notes
  4. Maintenance Update Sep.,19 2024 (2nd update)

    Touhou Gensou Mahjong v1.2.8 has been released. Bug fixes Fixed an issue where the instructions would not be displayed when selecting a tile from the discarded tiles using a “pick up a tile from the discards” ability, and the mouse would…

    Patch notes
  5. Maintenance Update Sep,19 2024

    The first retail version of “Touhou Gensou Mahjong” 1.2.6 has been released, but due to a bug that prevented progress, we have released v1.2.7. Bug Fixes Fixed a bug that prevented progress when using the “Hisami Yomotsu” ability with…

    Patch notes
  6. About the suspension of communication functions in the DEMO version

    Prior to the release of the full version on September 19, the service will be modified to disable the network versus function of the DEMO version. Please enjoy online matches with the retail version thereafter.

    Ruw
  7. About cross-platform play

    We would like to inform you about cross-platform play with the Nintendo Switch version of “Touhou Gensou Mahjong”. As previously announced, the Steam version of “Touhou Gensou Mahjong” will support cross-platform play with the Nintendo…

    Mediascape co.ltd.
  8. Touhou Gensou Mahjong will be available on Thursday, September 19th!

    To all the mahjong fans around the world, thank you for waiting. Touhou Gensou Mahjong is now complete! Thank you very much for all the suggestions for improvement and messages of support on SNS and message boards.…

    Mediascape co.ltd.

June

  1. Update June,18 2024

    The demo version of “TOUHOU GENSOU MAHJONG” has been updated to v1.2.4. {STEAM_CLAN_IMAGE}/44444327/3054d11d773306a7d12c811bb3adc9d256b1f437.png{STEAM_CLAN_IMAGE}/44444327/f5d1dc814938918770b43f277142795d63c1e77f.png Added Features When the…

    Patch notes
  2. About Supported OS

    We would like to inform you of the operating system compatibility of the Steam version of "Touhou Gensou Mahjong" including the DEMO version. We had originally planned to support Windows 7~8,1 for "Touhou Gensou Mahjong", but as of January…

    D.N.A.
  3. Update June,14 2024

    The demo version of "Touhou Gensou Mahjong" has been updated to v1.2.3. New features NG word filter is applied to nicknames and game room names. It seems that the correct behavior of Steam is to not filter texts sent by yourself or your…

    D.N.A.
  4. Handling of the DEMO version after the Next festival

    Since the release of the DEMO version of "Touhou Gensou Mahjong", we have received a great response. Thank you to the countless people who have played the game, wishlisted it, and provided us excellent feedback. It will take us a little…

    D.N.A.
  5. Maintenance Update June,13 2024

    The demo version of “TOUHOU GENSOU MAHJONG” has been updated to v1.2.2. Bug fixes Fixed a bug where when operating the entrance menu with the gamepad, the gamepad could not be used for operations such as exitting and setting nickname. Fixed…

    Patch notes
  6. Maintenance Update June,12 2024

    The demo version of "Touhou Gensou Mahjong" has been updated to v1.2.1. Bug fixes Fixed a problem in online matches where players were only being matched with users in close proximity. From now on, all should be connected to the same…

    Patch notes
  7. Currently known problems

    Thank you for playing "Touhou Gensou Mahjong" DEMO. We have confirmed the following problems. * The player who is supposed to be in the matching room cannot be found (especially when matching across countries). * App Randomly freezes when…

    D.N.A.
  8. TOUHOU GENSOU MAHJONG Streaming from developer

    The development director “D.N.A.” will be playing a actual online game. We will not set any particular restrictions on participants, so please feel free to join us. :) Members D.N.A.(Producer, Director, Code) The devs will be in the chat…

    info
  9. “TOUHOU GENSOU MAHJONG” Steam Demo Version Released!

    {STEAM_CLAN_IMAGE}/44444327/98a3b0643e809f62458e16427689a02b6bc69d79.png Thank you for long waiting, the demo of the Steam version of “TOUHOU GENSOU MAHJONG” is now available! You can also listen to the very best Touhou Arrangements by…

    info
  10. TOUHOU GENSOU MAHJONG Streaming from developer

    To celebrate the release of the Steam demo version of “Touhou Gensou Mahjong”, the development team will play a match using the demo version! Members D.N.A.(Producer, Director, Code) Ruw(Code) teltia(Assistant director)…

    info

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