Help
Materials — how to play Mahjong
- How to Play Japanese Mahjong - A Comprehensive Walkthrough by HanaYoriUta (3.5h)
- Riichi Book
- European Mahjong Association rules
Interactive — single player Mahjong and trainers
- Mahjong Quiz from chuuren.fr
- Mahjong Efficiency Trainer
- Gamedesign Flash Mahjong — very good single player Mahjong client in browser
- Gamedesign Unity Mahjong — as above, but works with Unity plugin
- Gamedesign Minimahjong — single player client with simplified rules
- Gamedesign Bamboo — chinitsu exercise
- Mahjong Scores Trainer by Horneds — hand scoring trainer running in web browser
- Riichi Mahjong Scoring Quiz — trainer that helps to learn the hand scoring rules
- R Mahjong
- Saikyo no Mahjong 3D — single player Windows client with lots of customization options
Mahjong online
- Mahjong Soul — Riichi Mahjong with anime-like visuals
- Tenhou — classic minimalistic client with UI in Japanese
- Chrome Web Store: Tenhou English UI — Chrome extension that translates Tenhou UI to English
- Firefox Add-ons: Tenhou English UI — analogous extension for Firefox
- Mahjong Time — advanced client with support for alternative Mahjong versions (Chinese and American, among others)
- SEGA MJ — a client with the UI in Japanese that features advanced visuals and a voice commentary
- Kemono Mahjong