Mahjong — Simplified 4-Player Mahjong vs AI

Mahjong (Simple)

Closed hands only · win with 4 melds + a pair, or seven pairs

Record: 0W 0L 0D

How to play

Draw and discard to shape your hand until you complete four melds (sets of three) plus a pair. Completing on your own draw is tsumo; on another's discard, ron.

Detailed rules

  1. 1.136 tiles (man/pin/sou 1–9 plus honors); four players start with 13 each.
  2. 2.On your turn draw one tile and discard one, shaping your hand.
  3. 3.Four melds (runs or triplets) of three plus one pair is a win.
  4. 4.Completing on your draw is tsumo; on another's discard, ron.
  5. 5.If the wall runs out, the round is an exhaustive draw.

Origin & history

Mahjong is a four-player tile game that took shape in 19th-century China and is now played worldwide in Chinese, Japanese (riichi) and other rule sets.

FAQ

How does this simple version differ from full Mahjong?

It drops calls (pon/chi/kan) and dora/complex yaku scoring, keeping closed hands only. Any complete hand — four melds + a pair, or seven pairs — wins, so it's beginner-friendly.

What does 'tenpai' mean?

It's the ready state where a single tile completes your hand. Knowing exactly which tiles you're waiting on is the heart of the game.