How to Play American Mahjong
American mahjong is a four-player tile game built around drawing, discarding, and completing one of the hands printed on the current annual card. The game becomes much easier when you separate it into a few distinct stages: preparing the table, dealing, completing the Charleston, taking normal turns, forming legal exposures, and declaring mahjong. You do not need to memorize the entire card before playing. You need to understand the flow well enough to know what decision is expected next.
The objective of the game
Your goal is to match one exact hand on the current American mahjong card. A hand may require particular numbers, suits, winds, dragons, flowers, and group sizes. Some hands may be exposed during play; others must remain concealed. The printed pattern is not a suggestion. The tile values, group sizes, suit relationships, and exposure status must all match.
Most players begin with thirteen tiles. The dealer, traditionally called East, begins with fourteen and makes the first discard after the Charleston. Thereafter, a normal turn consists of drawing one tile and discarding one tile, so the player returns to thirteen tiles unless the draw completes the hand.
The full game in order
Prepare and mix
Place all tiles face down, mix them thoroughly, and build four walls. Each player uses a rack, and many groups use pushers to move walls neatly.
Choose seats and deal
Assign East, South, West, and North according to the group’s preferred procedure. East receives fourteen tiles; the other players receive thirteen.
Complete the Charleston
Players pass three tiles at a time in prescribed directions. The Charleston is a structured exchange, not ordinary discarding. Passed tiles remain hidden during each pass.
Begin normal play
East discards first. Each following player either draws from the wall or calls the most recent discard when legally permitted, then discards.
Declare mahjong
When a drawn or called tile completes a legal hand, the player declares mahjong and displays the full hand for verification.
What happens on a normal turn
If nobody calls the previous discard, draw the next available tile from the wall. Add it to your rack, reassess your possible hands, and choose one tile to discard face up. Say the tile clearly enough for all players to hear.
A discard is live only until the next player draws. Once that draw occurs, the earlier discard cannot normally be claimed. This timing rule keeps the game moving and makes clear calls important.
What happens when a discard is called
A player may claim the most recent discard to complete a legal exposure or to complete mahjong. The caller names the intended action, takes the discard, places the completed group face up on the rack, and then discards without drawing.
The exposed group must be legal for the hand being pursued. A player cannot call merely to improve the rack or create a pair. A called tile commits the visible group and gives opponents useful information.
Drawn tiles and called tiles
Drawn from the wall
A drawn tile is private. It may be used in any legal part of the hand, kept for flexibility, exchanged for an exposed joker when allowed, or discarded.
Called from discard
A called tile must immediately complete a legal exposure or complete mahjong. It cannot be placed loosely in the concealed portion of the rack.
Winning on a discard
A final discard may be called for mahjong when it completes the exact hand, including a concealed hand where the rules permit the final winning call.
Beginner table habits
- Keep tiles upright on the sloped portion of the rack so opponents cannot see them.
- Separate exposures clearly from concealed tiles.
- Announce every discard by its common name.
- Do not touch the wall until the previous discard has had a reasonable calling moment.
- Verify the exact card line before declaring mahjong.
- Ask the group how they handle optional Charleston procedures and scoring before play begins.
The annual card is the authority for the hand
American mahjong hands change when a new annual card is issued. Learn how to interpret colors, spacing, parentheses, exposure markings, and hand values rather than memorizing examples from an older card. The procedures of play remain broadly stable, but the legal winning patterns are determined by the card in use at the table.
Common first-game questions
Must I know every hand before playing?
No. Scan several promising sections, keep the card visible, and narrow your choices as your rack develops.
Can I rearrange my tiles?
Yes. Reorganize concealed tiles as often as needed, but keep exposures fixed and visible.
What if I mistakenly call a tile?
Procedures vary by group and tournament rules. Stop immediately and ask before moving additional tiles.