Winning combinations
Singapore Rules
  1. 0 Coward (鸡胡)
  2. 13 Heaven's Hand (天胡)
  3. 13 Earth Hand (地胡)
  4. 13 Thirteen Terminals (十三么)
  5. 2 All Pong (碰碰胡)
  6. 1 All Chow (小平胡)
  7. 4 Sequence Hand / Ping Hu (平胡)
  8. 6 Pure Honors (字一色)
  9. 4 Pure Suit (清一色)
  10. 2 Mixed Suit (混一色)
  11. 10 Big 3 Dragons (大三元)
  12. 3 Little 3 Dragons (小三元)
  13. 13 Big 4 Winds (大四喜)
  14. 4 Little 4 Winds (小四喜)
  15. 1 Pong of Dragon
  16. 1 Chance Wind
  17. 1 Chance Round
  18. 1 Rob Kong (抢杠)
  19. 1 Self Draw (自摸)
  20. 1 Clear Front
  21. 1 No Flower
  22. 1 Own Flower
  23. 1 Flower Set
  24. 1 Animal

The rules generally follow those found in Wikipedia but not in its entirety. You will see that some rules are not implemented, such as the live tile discard scenarios.

Hong Kong Rules
  1. 0 Coward (鸡胡)
  2. 13 Heaven's Hand (天胡)
  3. 13 Earth Hand (地胡)
  4. 13 Thirteen Terminals (十三么)
  5. 13 Hidden Treasures (四暗刻)
  6. 13 Seven Consecutive Pairs
  7. 3 Seven Pairs (七对子)
  8. 13 Nine Gates (九蓮寶燈)
  9. 13 Pure Terminals
  10. 3 All Pong (碰碰胡)
  11. 1 All Chow (小平胡)
  12. 4 Sequence Hand / Ping Hu (平胡)
  13. 8 Pure Honors (字一色)
  14. 6 Pure Suit (清一色)
  15. 3 Mixed Suit (混一色)
  16. 6 Big 3 Dragons (大三元)
  17. 4 Little 3 Dragons (小三元)
  18. 9 Big 4 Winds (大四喜)
  19. 6 Little 4 Winds (小四喜)
  20. 1 Pong of Dragon
  21. 1 Chance Wind
  22. 1 Chance Round
  23. 1 Rob Kong (抢杠)
  24. 1 Self Draw (自摸)
  25. 1 Clear Front
  26. 1 No Flower
  27. 1 Own Flower
  28. 1 Flower Set
Frequently Asked Questions
  1. What is the maximum points one can score in a match?
    The maximum points/tai/fan/hand is capped at 15.
  2. Does Wahjong follow Singapore, Hong Kong, Taiwan or China mahjong rules?
    Wahjong generally implements rules from Singapore and Hong Kong Mahjong, depending on the mode chosen, but not in its entirety as there are minute differences between everyone's rules.
  3. What happens when a player leaves the match halfway?
    The player gets a gold/experience penalty, and automatically discards tiles that he draws in subsequent rounds.