Select game mode
📝
2D WWYDs
Solve efficiency problems
🔍
WWYD Solver
Analyze any hand's best discard
🎯
Wannabe Tenhoui
Match discards from high-dan players
🀄
Early Game Simulator
Compare tile shapes - which is worse?
📋
Paifu Review
Upload Mortal JSON and annotate moves
🎲
Riichi Judgment
Decide when to riichi
🤝
Call Judgment
Chi, Pon, Kan, or Pass?
⚖️
Push or Fold Judgment
Decide to push unsafe tiles
😅
I'm Sorry Mortal
Review your mistakes