PCGame

Riichi City - Japanese Mahjong

Free-to-play online riichi mahjong with anime characters and detailed lessons

Formirai Co., Ltd. · Released Sep 8, 2022

Reviews
Mixed
48% of 5,399
Recent reviews
Mostly Negative
36% of 84 in 30 days
Players
532
daily peak, Nov 7, 2026
Steam Deck
Playable
Last update on Steam
1 month ago
Sep 10, 2026
Minimum PC
GeForce GT 430
2 GB RAM · 0.5 GB disk
Full requirements

What is Riichi City - Japanese Mahjong?

A free-to-play Japanese mahjong game centered on cross-platform online PvP matches. Players choose voiced anime-style characters, compete with friends or other players, and use tutorials, hints, match logs, and scoring lessons to learn riichi mahjong.

For you if...

  • +you want detailed lessons on riichi rules and scoring
  • +you enjoy competitive online mahjong matches with friends
  • +you like anime characters, cosmetics, and collection systems

Not for you if...

  • −you want a simple mahjong client without gacha systems
  • −you dislike pervasive sexualized character art and fan service
  • −you prefer minimal menus and few live-service tasks

What players say

48% of 5,399 reviews are positive · 36% of 84 in the last 30 days

Players most often praise the academy lessons for explaining riichi rules and score calculation, while some also favor the interface and animations. The most common complaints are pervasive sexualized imagery, crowded menus, and gacha-driven live-service chores.

Players over time

▲ +42% vs a month ago

Players online on Steam, one sample a day.

Highest since Sep 2026: 611 players on Oct 25, 2026.

Show the data
DayPlayers
Nov 7, 2026532
Nov 6, 2026399
Nov 5, 2026365
Nov 4, 2026383
Nov 3, 2026471
Nov 2, 2026442
Nov 1, 2026599
Oct 31, 2026577
Oct 30, 2026382
Oct 29, 2026418
Oct 28, 2026428
Oct 27, 2026424
Oct 26, 2026475
Oct 25, 2026611
Oct 24, 2026582
Oct 23, 2026599
Oct 22, 2026465
Oct 21, 2026311
Oct 20, 2026324
Oct 18, 2026383
Oct 17, 2026370
Oct 16, 2026308
Oct 15, 2026310
Oct 14, 2026334
Oct 13, 2026336
Oct 11, 2026336
Oct 10, 2026340
Oct 9, 2026315
Oct 8, 2026271
Oct 7, 2026328
Oct 6, 2026309
Oct 4, 2026349
Oct 3, 2026326
Oct 2, 2026331
Oct 1, 2026331
Sep 30, 2026316
Sep 29, 2026350
Sep 27, 2026383
Sep 26, 2026364
Sep 25, 2026348
Sep 24, 2026326
Sep 23, 2026485
Sep 23, 2026322
Sep 22, 2026298
Sep 21, 2026215

Screenshots and trailer

Riichi City - Japanese Mahjong screenshot 1

Riichi City - Japanese Mahjong system requirements

Minimum: GeForce GT 430, 2 GB RAM, 0.5 GB of disk space.

As published by the developer.

Can my PC run Riichi City - Japanese Mahjong?

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Minimum

OS
Windows 7 SP1以上
Processor
Intel Pentium Dual CPU E2180 2.00GHz
Graphics
GeForce GT 430 / ATI Radeon HD 2600XT
Memory
2 GB RAM
Storage
500 MB available space
DirectX
Version 10

Recommended

OS
Windows 10
Processor
Intel Core i5 – 2.4 GHz
Graphics
GeForce GT 430 / ATI Radeon HD 2600XT
Memory
3 GB RAM
Storage
500 MB available space
DirectX
Version 10

Does Riichi City - Japanese Mahjong have co-op or multiplayer?

Yes: PvP online. There is no single-player mode. Crossplay with other platforms is declared.

Does Riichi City - Japanese Mahjong run on Steam Deck?

Playable Playable: it runs on Steam Deck with some adjustments.

  • Some text entry requires manually opening the on-screen keyboard
  • All functionality is accessible with the default controller configuration
  • In-game text is legible on Steam Deck
  • Default graphics settings perform well on Steam Deck

PC version details

DRM
None declared on Steam
Controller
Keyboard and mouse
Platforms
Windows, macOS, Linux
Steam features
Family Sharing, In-app purchases
Languages
Full audio: Japanese. Text only: English, Traditional Chinese, Simplified Chinese.

Does Riichi City - Japanese Mahjong use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Nov 6, 2026. How to filter AI games on Steam

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