American Mahjong
The Charleston, jokers and a card of hands, against three bots
American mahjong with 152 tiles, the Charleston, jokers and an original 50-hand card. Practise against three bots or play online with friends.
Features
Original card of hands
The House Card 2026 has 50 hands in ten categories, written for this site.
Card helper
Shows the hands you are closest to, how many tiles you still need and which hands are dead.
Big, clear tiles
Corner numbers, three tile sizes, dark mode and a confirm step before each discard.
Bots or friends
Easy, Normal and Hard bots, or online rooms with invite links and computer fill-ins.
How it works
- 1
Charleston
Pass three tiles right, across and left, then decide on an optional second round and a courtesy pass.
- 2
Draw, discard and call
Call discards to expose pungs, kongs and quints, using jokers in groups of three or more.
- 3
Declare Mah Jongg
When your 14 tiles exactly match a hand on the card, declare and collect.
About the game
American mahjong is the version that grew up in the United States from the 1920s, and it plays very differently from the Asian styles. The set has 152 tiles: three suits called Bams, Craks and Dots, winds, dragons, eight flowers and eight jokers. Instead of building any four sets and a pair, players race to complete one specific hand printed on a card of hands. Before play begins, everyone swaps tiles in the Charleston, a required round of passes to the right, across and left, followed by an optional second round and courtesy pass. Groups can be pungs, kongs or quints, and jokers stand in for any tile in a group of three or more but never in a pair or single.
What Seriauth built
Because the official card changes every year and is sold separately, Seriauth wrote an original card for the site: the House Card 2026, with 50 hands across ten categories such as 2468, Like Numbers, Consecutive Run, Winds & Dragons and Singles & Pairs. The game handles the full Charleston including stopping the second round, exposures, joker exchange and payments on self-draw or discard. A card helper ranks the hands closest to your tiles and flags dead ones, and the table is built for readability with large tiles, three sizes and dark mode. A ten-chapter beginner’s guide and category pages explain each part of the card. Online rooms with invite links and quick matching let friends play together, with bots in any empty seat.
FAQ
Is this the official NMJL card?
No. The site uses its own original card, the House Card 2026, so you can learn and practise without buying anything.
Where can jokers be used?
Only in groups of three or more. They can never form a single tile or a pair, and a discarded joker cannot be called.
What is a joker exchange?
On your turn, if an exposed group holds a joker and you have the real tile, you can swap it and take the joker.
Is there a daily game?
Yes. A daily deal is available alongside regular games against the computer.
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