American vs Chinese vs Japanese Mahjong

People say "mahjong" as though it's one game. It's closer to saying "cards". The tiles are shared, the rest is not, and a fluent Chinese player sitting at an American table will lose for reasons that have nothing to do with skill.

The set itself

American: 152 tiles. The Chinese 144 plus eight jokers.

Chinese: 144 tiles. Three suits of 1–9, four each; winds; dragons; flowers and seasons.

Japanese: 136 tiles. No flowers. Some sets swap a few fives for red fives, which score extra but are not wild cards.

The biggest difference: runs

In Chinese and Japanese mahjong, a run of three consecutive tiles in one suit is a legal group. It's the backbone of both games.

American mahjong has no runs at all. Every grouping is made of identical tiles — pairs, pungs, kongs, quints, sextets. You cannot claim a discard to make a sequence because sequences aren't a thing.

This single change rewrites everything. Middle numbers stop being valuable. Pairs become the fundamental unit. Tile efficiency, the core skill in Japanese mahjong, largely evaporates.

The second biggest: the card

Chinese and Japanese mahjong both let you win with any structurally valid hand, then score it according to what patterns it happens to contain. Build anything legal, get paid what it's worth.

American mahjong inverts that. There's a published list of hands, you must build one of them exactly, and its value is printed next to it. Nothing else wins, no matter how pretty.

And the list is replaced every year, which is a thing no other version does.

Jokers

Only the American game has them, and it has eight. They substitute for any tile in a group of three or more.

Chinese and Japanese players often find this distasteful on first contact, and then discover that jokers create their own skill layer — the exchange, the denial, the decision about whether to chase a jokerless bonus.

The Charleston

Exclusive to the American game. Before play, everyone passes three tiles right, three across, three left, with an optional second round and a final courtesy pass.

Nothing comparable exists in the other versions, where you play the hand you were dealt.

Scoring, briefly

American: the card gives the value. Multipliers apply for self-picking, for winning via joker exchange, and for finishing with no jokers.

Chinese: varies enormously by region. Hong Kong scoring, Taiwanese scoring and mainland variants differ in ways that cause arguments even between fluent players.

Japanese: the most mathematically involved of the three, with yaku, dora, riichi declarations and a scoring table people genuinely memorise.

Which is hardest?

Different hard.

Japanese mahjong has the steepest technical ceiling — the scoring alone takes months. Chinese mahjong is the easiest to pick up and varies most by table. American mahjong has the simplest mechanics and a permanently moving target, because the card resets every spring.

The honest answer for a beginner: American is the easiest of the three to start playing badly, and takes about a season to start playing well.

Switching between them

Coming to American from anywhere else, unlearn runs. That's ninety per cent of it. Then accept that you're building toward a printed line rather than a shape you choose.

Leaving American for another version, remember that nobody is going to hand you a joker, and that you may finally use those 4-5-6 sequences you've been trained to ignore.