Your Set Has More Than 152 Tiles. That Is Normal
Count the box and you will get the wrong number. Count your wall and you will learn something useful.
On this page
You open the box, count what is inside, and get a number nobody mentions — 160, or 166, or something else entirely. Meanwhile every guide says the game uses 152.
Both are right. The box count and the play count are different things.
The 152 that actually play
| Group | Maths | Count |
|---|---|---|
| Craks, bams, dots | 9 × 4 each | 108 |
| Winds — east, south, west, north | 4 × 4 | 16 |
| Dragons — red, green, white | 3 × 4 | 12 |
| Flowers | all interchangeable | 8 |
| Jokers | the American addition | 8 |
| Total | 152 |
The extras are blanks, and they have a job
The spare tiles in most boxes are blank on the face. They are not part of the game. They are there so that when a tile goes missing — and one will — you can letter a replacement rather than retiring the set.
If your set has blanks and no white dragons, then four of those blanks are your white dragons. Some manufacturers ship them unmarked. Count your dragons before you assume you are short — there should be twelve.
You will also meet groups who play blanks as extra jokers. That is a house rule and a perfectly nice one, but it is not the game as published — worth knowing which you are playing before somebody exposes a pair with a blank in it.
How to tell an American set from a Chinese one
Faster than counting the box: build your wall.
In the American game each player builds a wall 19 stacks long and two high. Four walls of 38 makes 152.
You have a Chinese set. The Chinese game uses 144 tiles — the same suits, winds, dragons and flowers, without the eight jokers. Four walls of 36 makes 144, which is 18 stacks each.
The jokers are the whole difference, and they are the reason the American game plays the way it does. Without them, none of the groupings larger than a kong would be possible at all.
Flowers, while you are counting
There are eight, and in the American game every one of them is the same tile. Sets vary wildly in artwork — plum blossoms, seasons, numbered panels, mandarins — and none of it means anything here. A flower is a flower.
This has one consequence people miss. Because eight exist and all are interchangeable, five natural flowers is a legal quint. Every other tile exists only four times, so a quint of anything else must contain a joker.
Where this comes from
The 152-tile composition and the 19-stack wall are confirmed by the American Mah-Jongg Association, I Love Mahj and Elaine Sandberg's Play American Mah Jongg!. The blanks guidance — spares, or your white dragons if the set has none — follows Tom Sloper's rules FAQ, which also notes that using blanks as wild tiles sits outside the official rules.