Ver1.34 2026 Summer Sale Update
・Added Anomaly No.48. ・Adjusted the difficulty. ・Fixed missing translations. ・Made system improvements and minor adjustments.

Developer posts and news about this game.

・Added Anomaly No.48. ・Adjusted the difficulty. ・Fixed missing translations. ・Made system improvements and minor adjustments.

Fixed an issue in No. 2 Score Attack where an invalid winning hand could incorrectly be judged as a valid win. As a result of this fix, the No. 2 Score Attack leaderboard has been reset. Adjusted some visual effects and animations. Fixed several minor issues.

Added Anomaly No.45 Anomaly No.24 can no longer be reported; added Anomaly No.46 Anomaly No.9 can no longer be reported; added Anomaly No.47 Other text adjustments

・Added difficulty selection. ・You can now view the answer when you miss an anomaly. ・Enlarged the riichi stick. ・Added Anomaly No.44.

Happy New Year! Thank you for your continued support of Ihen Mahjong in 2026. ・Added Ihen No.43. ・Fixed an issue where No.5 could unintentionally end the round early. ・Adjusted tile layout for No.24. ・Improved the presentation of Ihen No.39 to make it easier to understand.

・Fixed an issue where the ranking was not displayed correctly.

・Adjusted lighting to improve tile visibility. ・Fixed an issue where the failure reason was not displayed after a false Tsumo in No.2. ・Added multilingual translations for the tutorial images.

・Achievements have been officially implemented. ・Fixed a bug where a Rinshan tile could be drawn when pointing out the anomaly in No.21 without declaring a concealed Kan.

Added anomalies No.38 to No.42. Added 3 new Score Attack modes. Changed the concept of anomaly No.1. Made it possible to point out anomalies in No.9 and No.24. Allowed winning by Furiten in anomaly No.11. Added a route in anomaly No.15 that can be cleared even with inefficient ti

The GGC Cup Strange Mahjong has concluded No.20 Score Attack mode has been added An in-game ranking system has been implemented Time continues to be measured even when the options menu is opened during Time Attack The title for No.5 Strange has been changed Routes for No.14 and N

Tournament Website

・Fixed an issue where the UI would break when set to other languages ・Corrected some translations

・Added a "Retry" function to "Final Time Attack."

・When failing in 'Final Time Attack' and returning to the first east round, the timer will now reset. ・Added an announcement for the GGC Cup.

・Added Time Attack mode ・Supports Simplified Chinese, Traditional Chinese, Korean, and English (may have deficiencies)

・We have added a title screen. ・We have made it so that the sound doesn't stop when the game is inactive.

・Added Incident No. 36 and No. 37.

・Adjusted the lighting. ・Fixed a bug where "No. 26" could not properly "Chi" (perform the "Chi" action). ・Added anomaly No. 35.

・Adjusted the lighting. ・Added anomaly No.34.

・Implemented tutorial display. ・Adjusted No.10 so that anomalies appear earlier. ・Adjusted No.10 so that the round ends immediately after a call-out. ・Fixed an issue where the tiles to be called (Chi) were difficult to see in No.11. ・Adjusted the winning rate of COM in No.12. ・Ad