
Utilities
MJ
Hong Kong–style mahjong skills test against AI agents
MJ is a Hong Kong–style mahjong skills test in the browser — no install. You sit East against three AIs and play full sessions. Finish a session ranked first by purse profit to advance from Newcomer (新丁) to Grand Master (牌王).
Opponents get stronger each level, from casual baseline bots up through purse-aware AIs. The table supports English and Hong Kong Traditional Chinese, with optional Cantonese voice calls. Progress stays in your browser.
Features
- Play in the browser — no app to install
- Ten campaign levels against progressively stronger AIs
- Promotion by finishing first on purse, not win count
- Hong Kong rules (not riichi), with optional minimum faan
- English and Hong Kong Traditional Chinese, plus Cantonese table calls
- Progress saved locally in your browser
Screenshots


