How to Play American Mahjong: The Complete Step-by-Step Guide

Everything you need to go from "what's a Joker?" to hosting your first game night — equipment, setup, the Charleston, gameplay, and scoring, all in one place.

Introduction

Mahjong arrived on American shores in the 1920s — and almost immediately, we made it our own. While the game traces its roots back centuries in China, American Mahjong evolved into something distinct: a game with tile racks, eight Jokers, a yearly-changing score card, and a beloved passing ritual called the Charleston.

The goal is simple. Four players sit around a table, and the first one to collect a complete 14-tile hand that matches one of the winning combinations on the National Mah Jongg League (NMJL) card calls out "Mahjong!" and wins the game.

Don't let the card intimidate you. Think of American Mahjong as a cousin of rummy or poker: you're collecting sets, reading what your opponents discard, and deciding with every turn whether to hold, chase, or let a hand go. The rules below will take you from unboxing your first set to confidently calling your first Mahjong — usually within a few games.

A quick note on this guide: it follows the official rules published by the National Mah Jongg League, which is how the vast majority of American players learn the game. House rules vary from table to table — and that's part of the charm — but everything here will make you welcome at any game night.

Equipment: What's in the Box

A standard American set contains 160 tiles, along with a few accessories. Here's the complete inventory of what you (and three friends) will need:

Everything you need for a full game of American Mahjong.

The Tiles

American sets contain 160 tiles, of which 152 are used in actual play (the extras are spares and blanks). They break down into four families:

Tile Family	What It Looks Like	Count
Dots (Circles)	Numbered 1–9, shown as colored circles	36
Bams (Bamboo)	Numbered 1–9, shown as bamboo sticks (the 1 Bam is traditionally a bird)	36
Craks (Characters)	Numbered 1–9, shown as Chinese numerals over the character for "ten thousand"	36
Winds	North, South, East, West — 4 of each	16
Dragons	Red, Green, and White (the white dragon — a blank tile — is nicknamed "Soap")	12
Flowers	Decorative tiles that act as their own suit	8
Jokers	Wild tiles — the American game's signature twist	8

The three numbered suits (Dots, Bams, Craks) each have four copies of every number, 1 through 9. Together with Winds, Dragons, Flowers, and Jokers, that's your deck of 152 playing tiles.

A note on Soap: the White Dragon is usually a blank white tile, and on the NMJL card it can double as a zero. If your set's Jokers aren't obvious, Soap is the one that's deliberately featureless — never confuse it with a blank spare.

Dice

Two dice are used to choose the starting dealer and to determine where each player breaks the wall to draw tiles. Roll, count, deal.

The NMJL Card

This is the beating heart of the American game. The National Mah Jongg League publishes a new card every April with fresh winning hands — which is why American Mahjong never gets stale. Your tiles can't win without it, so keep one at the table (a set of four is ideal so everyone can read along). Grab the current-year card here.

Wind Indicator

A small dial marked N-S-E-W that shows whose turn it is to be East. Purely organizational — and honestly, a fun little table prop.

Racks & Pushers

American Mahjong is played with your tiles standing upright in a rack — nobody holds tiles in their hand like in card games. The pusher (the back of the rack that slides forward) lets you push your wall forward safely without exposing tiles. Every USA Mahjong set includes four racks with built-in pushers.

Starting the Game

Setup takes about five minutes once you've done it twice. Follow these steps in order:

Four walls, one square — the table is set.

Step 1 — Take your seats. Four players, one rack each, facing the center.

Step 2 — Wash the tiles. Turn all 152 tiles face down and shuffle them thoroughly with both hands. This is called "washing" and it's deeply satisfying.

Step 3 — Build the walls. Each player stacks 38 tiles in front of their rack: two layers of 19 tiles each. The four walls form a hollow square in the middle of the table.

Step 4 — Roll for East. Each player rolls the dice. The highest roll becomes East (the first dealer). Play moves counterclockwise from East: East, South, West, North.

The dice decide where the wall is broken.

Step 5 — Break the wall and deal. East rolls the dice again and counts stacks counter-clockwise along their own wall from the right, then lifts that section. Starting from the break, each player takes 4 tiles at a time (two from the top layer, two from the bottom) moving to the right, until everyone has 12 tiles. East then takes 2 more, and each other player takes 1 more.

The result: East begins with 14 tiles; everyone else has 13. Players stand their tiles upright in their racks, backs facing the table so only they can see their hand.

Picking a Hand: Reading the NMJL Card

Your rack is your private hand — only you see it.

Here's the part that scares beginners and shouldn't: to win, your hand must exactly match one of the combinations printed on the NMJL card. The card lists dozens of winning hands across nine sections — from "Year" hands to "Singles and Pairs." You only need one.

How to Read the Card

Colors tell you which suit. Each hand is printed in colors that map to suits: blue = Dots, green = Bams, red = Craks. When a hand shows different colors in the same space, you may use any suits. Flowers and zeros (Soap) are always shown in blue.

Symbols tell you which tile. Numbers 1–9 are self-explanatory. Letters stand for Winds (N, S, E, W), Dragons (D = any Dragon, R = Red, G = Green), 0 = Soap (White Dragon), F = Flower, and J = Joker.

Parentheses mean options. If a number is in parentheses, you can use any tile of that type. If a suit group is in parentheses, the suit is your choice.

Term	Meaning
Pair	2 identical tiles
Pung	3 identical tiles
Kong	4 identical tiles
Quint	5 identical tiles (requires at least one Joker)
Sextet	6 identical tiles (requires Jokers, rare on the card)

Choosing your hand: scan your 13 starting tiles and look for the card hand you're naturally closest to — a bunch of one suit? Check the suited sections. Lots of Winds and Dragons? Look at Winds-Dragons hands. Beginners should pick hands marked X (concealed/exposed flexibility) and avoid the Singles and Pairs section — it pays big but punishes mistakes.

The Charleston

Three tiles, passed right — the ritual begins.

Before the first turn, everyone passes unwanted tiles — and this ritual is 100% unique to American Mahjong. It's called the Charleston, and it's where strategy quietly begins.

First Charleston (mandatory):

1. Right: every player passes 3 tiles to the player on their right.
2. Across: then 3 tiles to the player across the table.
3. Left: then 3 tiles to the player on their left.

Second Charleston (optional — all four players must agree):

1. Left: pass 3 tiles left.
2. Across: then 3 tiles across.
3. Right: then 3 tiles right.

The courtesy pass: after the second Charleston, any player may ask to exchange up to 3 tiles with the player across from them. Both must agree on the number — and if one says zero, that's final.

Two rules to remember: you can't pass Jokers, and if you don't have 3 tiles worth giving away (lucky you), you may make a "blind pass" — include tiles you just received without looking at them.

Gameplay: Drawing, Discarding & Calling

Drawing and Discarding

East begins by discarding one tile face up into the center, announcing it out loud ("Two Bam"). Play then moves counterclockwise: each player draws the next tile from the wall, decides whether to keep it, and discards one tile face up. Your hand must always be the same size after your turn — draw one, discard one.

Discards are the table's shared information. Everyone can call the most recent discard — but only the most recent one. Once the next player draws, that window closes forever.

Calling a Tile

You can claim a discard to complete three-of-a-kind (Pung), four-of-a-kind (Kong), a five-of-a-kind (Quint), or — best of all — to complete your entire winning hand. When you call:

• Take the tile and expose the completed combination face up on top of your rack for everyone to see.
• Exposed sets are locked — you can never rearrange or take them back into your hand.
• You then discard a tile (or win), and play continues from you, skipping anyone between the discarder and you.

If two players call the same discard, the caller who's using it to win ("Mahjong!") beats everyone. Otherwise, the player whose turn comes first wins the claim.

Joker Rules

Jokers are wild — with limits. A Joker can substitute for any tile in a Pung, Kong, Quint, or Sextet, but never in a pair, a single, or as part of the final winning pair. And here's the fun part: if an opponent has exposed a Joker on their rack, you can steal it back by trading the real tile it represents.

To exchange for an exposed Joker:

1. Have the real tile the Joker is standing in for.
2. Swap it with the Joker on your turn (before discarding).
3. Take the Joker into your hand — it's yours now.

This is why experienced players watch every exposed rack like hawks. Free Jokers change games.

Ending the Game & Scoring

The moment every hand builds toward: Mahjong!

When you complete all the combinations for a hand on the card — 14 tiles that match it exactly — you declare "Mahjong!" and reveal your rack. The game ends immediately and payouts happen per the table below. If the wall runs out before anyone wins, it's a draw: reshuffle, rebuild, and replay with no payment exchanged.

How You Won	Payout (in chips or points)
Won on another player's discard	Discarder pays double; others pay single
Won on your own draw (self-picked)	Everyone pays you double
Won with no Jokers in your hand	Doubles again — the clean-hand bonus

Most home games keep it simple with chips, coins, or even M&Ms. The NMJL card lists a value for every hand; casual tables often just play for bragging rights. Choose your stakes before the first wall goes up.

After the First Game

The player to East's right becomes the new East, winds rotate, and you repeat the whole routine: wash, build, roll, deal, Charleston, play. A full session of four rounds (each player serving as East once) is called a "wall" — typically an evening's worth of games, snacks, and catching up. Which is rather the point.

Additional Rules & Common Mistakes

Every table handles mishaps a little differently, but here are the standard fixes for the most common beginner errors:

Situation	Standard Resolution
Discarded the wrong tile	If the next player hasn't drawn, you may take it back (house rules vary)
Misnamed a discard	Correct it immediately; calls made on the wrong name still stand
Wrong number of tiles in your rack	Fix it as soon as noticed; if discovered late, correct on your next turn
Called "Mahjong" incorrectly	Your hand is dead — play continues among the other three players
Exposed a wrong combination	It stays exposed; you cannot rearrange it (choose carefully!)

The golden rule: be patient with new players and generous with your own mistakes. Everyone botches their first Charleston. The game's been passed down table to table for a hundred years precisely because people kept teaching it.