- Maintenance Update Jan,14 2026 - 13 January 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 compatible with the current Switch version (1.2.16).Bug FixesFixed the Traditional Chinese translations for slides in “Cirno's Mahjong Class” and some match messages. Thank you to the community for reporting these.Regarding Urumi Ushizaki's ability, the description lacked clarification that it affects everyone except the user who activated it. The description has been revised. (The ability's behavior remains unchanged.)(Steam version only) Fixed an issue where the screenshot capture sound played but the screenshot wasn't saved during automatic screenshots.Balance AdjustmentsFor Adventure Mode “Makai-3”: Reduced Matara Okina's starting points and increased the…
- Mima Returns! - Oct,29 2025 - 28 October 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 class” has also been translated. Enjoy!Mima Returns!To commemorate the Switch package release, Mima—who appeared in the doujin version of the Touhou Gensou Mahjong series—has made a comeback! She is now available for all players on every platform. Her abilities have been slightly enhanced from her original version. Enjoy her wonderful illustration by Katakei!Auto-Screenshot for Winning HandsAdded a feature to automatically take a screenshot when winning with a certain number of han or higher. You can set the required han count in “Advanced Settings”.※Auto-screenshots only work when a player wins.Discard Tile AssistanceExclusively for Vs. CPU modes, a fea…
- Urgent Update Oct,5 2025 - 4 October 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 you encounter any issues after this update, please contact us.We appreciate your continued support of Touhou Gensou Mahjong.
- Maintenance Update May,16 2025 - 15 May 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 play against other versions of “v1.2.14”, but we ask that you update as soon as possible. Bug fixes Fixed an issue where the order of the explanation slides in “Cirno's Mahjong Class” was incorrect when there were more than 10 pages. Fixed significant performance issues caused by the “Oni-bi” effect triggered by Chiyari's ability. The appearance of the effect has been significantly changed. Fixed an issue where temporary substitutes could be used in single-player mode. Fixed an issue where repeatedly entering and exiting the match room would eventually cause an error, preventing further access to the match room until the game was restarted. Fixed some…
- Cross-platform matching support - May,1 2025 - 30 April 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 Mahjong and other platforms are now available! Enjoy fantastic mahjong battles on your favorite platform and in your favorite style! New features Cross-platform multiplayer support. Double-clicking is now treated as the confirmation action in character selection. Bug Fixes Fixed an issue where the number of tiles in the pot was not reset during forced consecutive rounds for “Mike Goutokuji” and “Miyoi Okunoda” and during a flowing full house. Fixed an issue where “Kisume” abilities could stack multiple times. Fixed an issue where communication synchronization would become out of sync and cause the game to freeze when playing online with CPU characters…
- Maintenance Update Nov.,24 2024 - 23 November 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 other versions of “v1.2.14”, but we ask that you update as soon as possible. Bug Fixes Fixed an issue where, when searching for a game using a “lobby password”, it was sometimes impossible to enter the game you were supposed to be able to enter. We apologize for any inconvenience this may have caused. We hope you will continue to enjoy playing Touhou Gensou Mahjong.
- Maintenance Update Nov.,22 2024 - 22 November 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 as soon as possible. Bug Fixes Fixed an issue where pressing the RB button on the gamepad on the title screen would cause an unintended menu transition. Fixed an issue where the SD character for “Shikieiki Yamaxanadu” would not be displayed in Adventure Mode. Fixed a bug where, after selecting “Lobby Password” from the “Network Match” menu and opening the password input window, if you closed it by right-clicking, you would no longer be able to select items from the “Network Match” menu. We apologize for any inconvenience caused. We look forward to your continued support for “Touhou Gensou Mahjong”.
- Update 24/11/19 - Private match support via "Lobby Password" feature - 19 November 2024
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 enter). The “Lobby Password” function has been added. This is a replacement for the “Private Room” setting that was originally planned. More details to follow. Bug Fixes Fixed a bug where the ability of “Komachi Onozuka” (extending the “Ippatsu” hand) could be canceled by the opponent's declaration of Pon, Chi, or Kan, even though it was not supposed to be possible. Fixed a bug where the ability of “Aunn Komano” could be activated when the player was in a concealed hand, even though it was not supposed to be possible. Regarding the ability of Junko, (1) the number of tiles loaded was different from the description, and (2) it was sometimes cause freeze, so…
- Maintenance Update Oct.,21 2024 - 21 October 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 increase while waiting for a online match to start Fixed an issue where the game would sometimes freeze if a character such as “Okina” or “Nue” used their ability and then ended the game before they expire Fixed a bug that caused the loading ability that had been activated in the previous round to appear in the first round immediately after a retry in Adventure Mode, etc. Fixed a bug that caused the game to freeze under certain conditions in “Chikusyoukai - 2” in Adventure Mode Fixed a bug that caused the winning conditions for “Chireiden - 3” to be different from the description We apologize for any inconvenience caused. We look forward to your cont…
- Maintenance Update Sept.,22 2024 - 21 September 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 sometimes return to the menu screen automatically when displaying the results of a game. The settings for the “Kishinjou” table were different from the description. The ranking point settings for the “Hakurei Shrine - 4” adventure were not set correctly. The winning point judgment for the “Kishinjou - 4” adventure was not considering at the Wareme. Fixed an issue where unnecessary decimal points were being displayed in the ranking point table in the table explanation. Fixed an issue where the game would become unplayable if the round ended while the ability of the Nue was active. In the function that allows you to check the point difference by clickin…
- Maintenance Update Sept.,21 2024 - 20 September 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 entering “Adventure” (or “Cirno's Mahjong Class” in the case of “お東場恋娘”). We apologize for any inconvenience caused. We look forward to your continued support of “Touhou Gensou Mahjong”.
- Maintenance Update Sept.,20 2024 - 20 September 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 and the judgment of “Hitori uki” in the adventure mode in the adventure mode, the First dealer seat mark was not turned up (showing "East") when the game started in the South wind. Fixed the garbled messages in Star Sapphire's ability. Fixed a case in which the mouse pointer and the button collisions did not match during a game when NDI was turned on. Thank you for your continued support of “Touhou Gensou Mahjong”.
- Maintenance Update Sep.,19 2024 (2nd update) - 19 September 2024
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 not work (you could only select tiles using the game pad). Fixed an issue where the prediction display for picking up discarded tiles was incorrect after activating the ability of Akyu. Fixed some missing translations. * Regarding the “Pick up discarded tiles” ability, the messages are displayed without being translated even in English settings, we will fix this in the next version. We are always looking at feedback from the community, and we aim to fix any problems as soon as they are found. We look forward to your continued support for “Touhou Gensou Mahjong”.
- Maintenance Update Sep,19 2024 - 19 September 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 four-of-a-kind in the hand. Fixed a problem where the game would become unplayable after a network error occurred at the entrance. We are always looking at feedback from the community, and we aim to fix any problems as soon as they are found. The following problems found after v1.2.7 was released will be fixed in v1.2.8, which will be released today or tomorrow. When selecting a discarded tile from the river using a “Pick up a tile from the discards” ability, no explanation is displayed and the mouse cannot be used (only the gamepad can be used to select). The display of the prediction of the next tile after activating the “Akyu Hieda” ability is incorrect…
- About the suspension of communication functions in the DEMO version - 18 September 2024
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.
- About cross-platform play - 10 September 2024
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 Switch version, but this will require an update to the Switch version, which will take some time after the Steam version is released. We apologize to those who are looking forward to cross-platform play, but we are preparing to release an update as soon as possible so that you can enjoy cross-platform play. Thank you for your patience.
- Touhou Gensou Mahjong will be available on Thursday, September 19th! - 10 September 2024
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. Steam version of “Touhou Gensou Mahjong” bundles some DLCs, which was sold separately in the consumer version. Additional character “ZUN” Additional character & stage "Unconnected Marketeers" pack “Touhou Gensou Mahjong 4” BGM Pack Please enjoy to your heart's content! Also, for about two weeks after the start of release, 10% off the regular price will be available as a sale. Please take this opportunity to enjoy playing against mahjong players from around the world in “Touhou Gensou Mahjong”! Game modes added to the Steam version Cirno's Mahjong Class Let's learn the basics of mahjong with Cirno and her friends. It starts with “7-tiles mahjong”, which is easy to make a winni…
- Update June,18 2024 - 17 June 2024
The demo version of “TOUHOU GENSOU MAHJONG” has been updated to v1.2.4. Added Features When the in-game language is set to "English", numbers and English letters will be added to tiles and the wind symbol will be written in English. Bug fixes Fixed a problem in which the click judgment of the "Activate Ability" button was larger than it appeared. Other fixes Based on community feedback, some translations have been modified. Closed the new songs that appeared in the Steam version once. Please listen to the retail version next time. Adjusted the table texture of the "Noh Stage". Reduced the vividness and contrast of the background. We will continue to release the demo version for the purpose of testing and debugging until its release, and will continue to fix bugs. However, we will lower the maximum number of users to reduce server load. We appreciate your understanding. After the release…
- About Supported OS - 17 June 2024
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 1, 2024, the Steam client will only be compatible with Windows 10 or later, However, as of January 1, 2024, the Steam client will only be supported on Windows 10 or later, and "Touhou Gensou Mahjong" will also be supported on Windows 10 or later accordingly. Please note that we may not be able to support operation on operating systems prior to Windows 10.
- Update June,14 2024 - 14 June 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 friends, but currently you and your friends are also filtered due to the technical specifications. Please be aware of this. Added support for NDI protocol output of video from a different screen than the game screen.Details are explained below. Bug fixes Fixed cancel operation being triggered twice by right-clicking when selecting a character in a CPU free game. Fixed a bug in which when Cirno's ability hit the player themself, the player would be forced to discard their last drawn tile 4 times in the current turn plus three turns. From now on, it is 3 turns forced discards even if themself is frozen. NDI sending function What is NDI? NDI (Network Device…
