Mahjong Joker Rules: How Jokers Work

Where jokers came from

Mahjong was born in China, and traditional Chinese sets don't include jokers. They were added as the game developed in America, and today they're one of the features that make American mahjong its own style. If you're curious about the differences, see American vs. Chinese mahjong.

Why jokers are so precious

There are only 8 jokers in 152 tiles. With 13 tiles in your starting hand, you'll be dealt less than one joker on average, and plenty of hands start with none. You can also draw jokers from the wall during play, or win them through a joker exchange (more on that below). Because they're rare and they fit almost anywhere, most players hold on to every joker they get.

The basic rule: groups of three or more

A joker can stand in for any tile, but only in a group of three or more identical tiles. That means jokers can go in:

• a pung (three of a kind)
• a kong (four of a kind)
• a quint (five of a kind) or larger

This works for any kind of tile in those groups, including flowers, winds, and dragons.

Never in singles or pairs

This is the rule beginners forget most often. A joker can never be used as a single tile or as part of a pair. If a hand on the card shows "FF" or "22", those two tiles must be real.

That's why hands made entirely of singles and pairs are naturally jokerless. You simply can't use a joker anywhere in them. Here's one of our practice hands as an example:

Singles & pairs

Pairs Party

C50¢

FF1122334455DD

Five pairs in a row in one suit, plus a pair of that suit's matching dragon. Concealed, and no Jokers (Jokers never go in pairs).

One way to complete it:

Compare that with a hand where every group is a pung or kong. Jokers are welcome in each group here, though the pair of flowers still has to be real:

Like numbers

Three of a Kind

X30¢

FFF77777777777

Pick any one number and collect it in all three suits. Sevens are shown, but any number works.

One way to complete it:

Discarded jokers can't be called

You may discard a joker, but once it hits the table, it's out of play. Nobody can call a discarded joker, not for an exposure and not for Mahjong. That's actually a useful trick late in a game: if you're worried about throwing a tile someone else needs, a joker is a discard nobody can use. Of course, it's also a joker you no longer have, so think it over first.

The joker exchange

Here's the part that makes jokers exciting. When a player exposes a group with a joker in it, that joker can be rescued. It's called a joker exchange (some people say "redeeming" a joker).

How it works

1. It must be your turn.
2. Look at the exposed groups on everyone's racks, including your own.
3. If a joker is standing in for a tile you're holding, put your real tile in its place and take the joker.
4. Finish your turn as normal by discarding.

You can make more than one exchange on a turn if you have the right tiles, and the joker you take can go straight into your own hand. You can't call someone's discard just to trade it for a joker, though. Discards can only be called for an exposure or for Mahjong.

What this means for your exposures

Every joker you put in an exposure is a joker someone else might take. That doesn't mean you should avoid exposing jokers, since sometimes you need to. It just means it's smart to remember that the 4 Crak you're holding might be worth more as a swap than as a discard.

The jokerless bonus

If you win with a hand that has no jokers at all, most tables double the payment. It's a reward for doing it the hard way.

Singles-and-pairs hands are a special case. They can't use jokers anyway, so house rules differ on whether they earn the jokerless bonus. Some tables give it, and many don't. Ask your group before your first game so nobody is surprised. Our payout calculator lets you set this either way.

Joker tips for beginners

• Never pass jokers in the Charleston. It's against the rules, and you'd be giving away your best tile.
• Count your jokers when picking a hand. Two or three jokers make big pungs and kongs much easier.
• Watch the exposures. Every time a player exposes a group with a joker, check whether you hold the matching tile.
• Remember the pair rule. If your hand needs a pair, you'll have to find the real tiles.

Want to get faster at spotting jokers and every other tile? Try our tile quiz, then read the full walkthrough of how to play American mahjong.