American Mahjong vs. Chinese Mahjong: Key Differences

Two Games, One Family

American Mahjong and Chinese Mahjong share the same ancestry — both are tile-based games for four players where the goal is to build a complete hand. But that’s where the similarities start to thin out. The two versions have evolved into distinctly different games with their own rules, strategies, and culture.

The Tiles

Both versions use tiles in three suits (Craks, Bams, and Dots) along with Winds and Dragons. But American Mahjong adds two key elements:

  • Jokers — Eight joker tiles that can substitute for any tile in a group of three or more. Chinese Mahjong doesn’t use jokers.
  • More Flowers — American sets include eight flower tiles, compared to the four or eight found in Chinese sets.

An American Mahjong set has 166 tiles total, while a Chinese set typically has 144.

The Card vs. Fixed Rules

This is the biggest difference. In Chinese Mahjong, the winning patterns are fixed — they’re part of the rules and don’t change. Players memorize the valid hand types and play accordingly.

American Mahjong uses the NMJL card, which lists a completely new set of winning hands each year. This means the strategy shifts annually, and players need to adapt to the new card every spring.

The Charleston

American Mahjong features a unique tile-passing ritual called the Charleston. Before gameplay begins, players pass tiles to each other in a structured sequence (right, across, left). This adds a layer of strategy not found in Chinese Mahjong, where play begins immediately after the deal.

Scoring

Chinese Mahjong uses a point-based scoring system where different hand elements (flowers, concealed tiles, specific combinations) add up to a total. Different regional variants have different scoring tables.

American Mahjong keeps it simpler — each hand on the NMJL card has a fixed point value. The winner collects from each losing player based on that value, with doubled payment from the player who discarded the winning tile.

Gameplay Flow

The core loop is similar — draw a tile, decide what to keep, discard. But there are differences:

  • Exposures — Both versions allow claiming discarded tiles, but American rules restrict when you can call for a tile based on what group you’re building.
  • Joker exchanges — In American Mahjong, you can swap a natural tile for a joker in another player’s exposure — a strategic move that doesn’t exist in Chinese Mahjong.
  • Dead hand rules — American Mahjong has stricter rules about incorrect exposures that can result in a “dead hand,” forcing you out of contention for that round.

Which Should You Play?

Both are wonderful games. Chinese Mahjong is steeped in tradition and offers a deeper regional variety. American Mahjong brings a fresh challenge every year and has a vibrant community — especially popular among social groups and leagues across the United States.

If you’re looking to play American Mahjong on your iPhone, Mahj Parlour is built specifically for the American version with full NMJL card support.

Download Mahj Parlour and see for yourself.