In-game event

Update June,18 2024

TOUHOU GENSOU MAHJONG · published 17 Jun 2024, 18:35 UTC

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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 of the final version, we plan to limit the demo version to single-player and focus on the "Adventure" and "Cirno's Mahjong Class" experiences.

Please help us by sending us your logs

We have received several reports of bugs, but the conditions under which they occur are not yet known, and these bugs have not been fully fixed in this patch.
However, log files can be collected on the PC version. If you send us the logs when the bugs occur, we may be able to fix them earlier. We would appreciate your cooperation in sending us the logs if you don't mind.

How to send logs

Location and file name of the log file

The log file is located in "C:\Users[username]\AppData\LocalLow\DNASoftwares\TouhouGensouMahjong\". (If your startup drive is not C, replace "C:" at the beginning with the name of your startup drive.)
Player.log is the log file of the currently running (or last running) Touhou Gensou Mahjong, and Player-prev.log is the log file of the previous run.

If a bug occurs

If a bug occurs, close the application (if you have not yet terminated Fantasy Mahjong), and then copy the above log file "Player.log" to sent through Mediascape(this game's Publisher)'s support portal. You can attach files up to 2 MB in the "Inquiry for specified products" form. If the file is large, we would appreciate it if you could Zip it. Please describe the situation in which the bug occurred in the description of your inquiry.

Thank you for your continued support of "Touhou Gensou Mahjong".

Other announcements

All events

Game update13 Jan 2026Maintenance Update Jan,14 2026We 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 Fixes · Fixed the Traditional Chinese translations for slides in “Cirno's Mahjong Class” and some match mes…Major update28 Oct 2025Mima Returns! - Oct,29 2025We 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 Additions Chinese (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 Genso…Game update4 Oct 2025Urgent Update Oct,5 2025A 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.