
Game Overview
Riichi mahjong becomes a colorful supernatural showdown when more than 130 Touhou Project characters bring their personalities and powers to the table. TOUHOU GENSOU MAHJONG turns the traditionally thoughtful four-player tile game into something far less restrained, placing familiar heroines, rivals, and oddballs from Gensokyo across stages inspired by the series’ long history. The tone can be seriously competitive one match and gloriously chaotic the next, depending on the table rules and the characters involved. Fans get a substantial crossover celebration, while newcomers receive a lively gateway into Touhou’s huge cast.
Matches follow the foundation of Japanese riichi mahjong: players draw and discard tiles, assemble legal hands, read opponents’ discarded tiles, and chase high-scoring combinations before someone else wins. Tables support three- or four-player formats, and the usual tactical tension of calling tiles, declaring riichi, managing risk, and defending against a potential ron remains central. Character-specific abilities can bend the normal flow of a round, creating chances to manipulate situations that would otherwise be decided purely by tile luck and calculation. Twenty themed locations add further twists through alternate rulesets, ranging from standard competitive conditions to deliberately absurd house-rule variants that change how hands, scoring, or round objectives play out.
Its biggest strength is the amount of variation layered over a recognizable mahjong ruleset. A huge roster, dozens of visual interpretations from contributing artists, and a broad musical selection give each match the feel of a fan-made festival rather than a dry digital board game. Unlike a straight simulator such as Mahjong Soul or more formal riichi clients, it welcomes unpredictable powers and novelty rules without abandoning the satisfaction of building a clever hand. Dedicated mahjong players who want a less rigid alternative will find plenty to learn, while Touhou fans and casual groups are likely to enjoy it most when they embrace the chaos rather than treat every table as a tournament.
Screenshots
Installation
- Select the Download button at the top of this page to open UploadHaven.
- On UploadHaven, wait for any countdown, then select Free Download. Optional: UploadHaven Pro for faster downloads.
- When complete, extract the archive to a TOUHOU GENSOU MAHJONG folder using 7-Zip.
- Open the extracted folder and start the game normally.
- For errors, check Setup Guide & Troubleshooting below. Keep your security software enabled.
System Requirements
- 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
Setup Guide & Troubleshooting
How do I fix missing DLL errors for TOUHOU GENSOU MAHJONG (v1.2.6)?
After extracting TOUHOU GENSOU MAHJONG (v1.2.6), navigate to the _Redist or _CommonRedist folder inside the game directory and install DirectX, Vcredist, and any other dependencies included.
What should I do if the downloaded file is corrupted?
The full archive is 1.29 GB — make sure your download completed fully before extracting. Use 7-Zip to extract the files. If you still see a "file corrupted" error, re-download and try again.
Do I need to run the game as administrator?
Usually, no. Start the game normally from the extracted folder. If you see a permissions or save error, check that the folder is writable and follow the game's documented fix. Only grant administrator access when a trusted game's specific setup requires it.
How do I update my GPU drivers for this game?
The game won't launch — what should I try?
Check that extraction completed and your PC meets the system requirements, including Version 11. Note any error message before choosing a fix. If it identifies a missing runtime, install the required DirectX components or Microsoft Visual C++ Redistributable from Microsoft.
My antivirus is blocking the game — is it safe?
A warning needs to be investigated; the download source alone cannot confirm that a file is safe. Keep your security software enabled and review the detection details. Do not run or restore a flagged file unless you have verified that it is a false positive. If you are unsure, leave it quarantined.