How to Play Two-Player Mahjong

Oh Mahj Goodness — where play meets meaning.

Overview

  • Two racks — two hands. Each player manages two hands.
  • Win Condition: The first player to declare Mahjong on BOTH racks wins.
  • Also known as: Siamese Mahjong (made for two players).
Twice the strategy and twice the fun—plan both hands so they don’t compete for the same tiles.

Setups (Choose One)

  • Messy Mahjong: Shuffle all tiles face-down in the center and draw at random.
  • Double Walls: Build two walls back-to-back in front of each player’s racks. Draw from your own walls.

Starting Tiles

  • • Dealer takes 28 tiles, then discards to begin the game.
  • • Other player takes 27 tiles.
Use your double mahjong rack (or two separate racks) to manage both hands comfortably.

Building Your Hands

  • • Build hands on both racks from your draws.
  • • Avoid “playing against yourself” — if one hand needs lots of Flowers, don’t build the other for the same tiles.
  • • You may swap tiles between racks anytime, unless a set is already exposed.

Playing

  • No Charleston.
  • • Dealer discards first.
  • • On your turn: draw a tile and use it for either hand, then discard as normal.
  • • You may declare Mahjong on one rack early, but any jokers in that hand can no longer be swapped.
  • • You don’t have to declare the first Mahjong immediately—waiting to announce both at once is allowed. If you need to call a tile for a single or pair to go Mahj, it’s fine to declare the first hand.

Winning the Game

  • Mahjong on both racks first — you win! The game ends immediately.
Helpful Resource
Our preferred online resource for two player (Siamese Mahjong) is mahjongg.org/siamese-rules.
Questions? Email info@omgmahj.com.