152 vs. 160 vs. 166 Mahjong Tiles: What’s the Difference?

August 18, 2026

152 vs. 160 vs. 166 Mahjong Tiles: What’s the Difference?

You find a set you love, scroll down, and see “160 tiles.” The next set says 166. Your friend insists American Mahjong uses 152.

All three can be American sets. The difference is usually spare tiles—not a different game.

The quick answer

Total in the box	What it usually means	Used in a standard game?
152	The complete American playing group	All 152
160	The playing group plus 8 extras	Usually 152
166	The playing group plus 14 extras	Usually 152

Manufacturers choose their own mix of extras, so always check the full inventory.

What makes up the standard 152?

Tile family	Count
Dots	36
Bams	36
Craks	36
Winds	16
Dragons	12
Flowers	8
Jokers	8
Total	152

The first six groups add up to 144. American Mahjong adds eight Jokers, bringing the active total to 152.

That is also why each player builds a wall 19 tiles long and 2 tiles high: four walls of 38 tiles equal 152.

So why sell a 160-tile set?

Because spare tiles are useful.

A 160-tile set normally gives you the complete 152 plus eight replacements or special pieces. OPUS sets include:

152 standard playing tiles
2 additional Jokers
6 blank tiles

There are 10 Joker tiles in the box, but standard play still uses eight. The other two Jokers and six blanks are extras.

Blanks can help if a tile is lost or damaged, as long as the finished replacement matches the original. Extra Jokers may be used for replacement, display, personalization, or a house rule agreed on by the whole table.

What comes in a 166-tile set?

There is no single official 166-tile formula. A common version includes the standard 152 plus:

4 extra Flowers
2 replacement blanks
8 blank or customizable Joker tiles

Another brand may give you ten blanks or a different Joker mix. More tiles are not automatically better; the extras should be listed clearly and be useful to you.

Do you put all 160 or 166 tiles in the wall?

Normally, no. For standard American card-based play, remove the extras and build the wall with 152 active tiles.

The additional pieces do not create a new version of the rules. If your group plays with extra Jokers, that is a house rule and should be agreed on before the game starts.

What about 144-tile sets?

A 144-tile set is usually intended for a Chinese-style game and normally has no American Jokers. It is not ready for standard American play as sold.

You can buy Jokers separately, but they need to match the size, thickness, color, and back closely. If players can identify the added Jokers while the tiles are face-down, the game does not work fairly.

Which count should you buy?

Choose 152 if you want the standard playing group and the smallest case.
Choose 160 if you want a practical number of replacements without carrying many extras.
Choose 166 if you want more options for replacement or personalized Jokers.

For a beginner, clarity matters more than the biggest number on the box. Make sure the set has the full 152-tile playing group, readable faces, and a clear list of extras.