Tiles

What counts as Tiles

Tiles are the physical game pieces used in mahjong. A standard riichi mahjong set contains 136 tiles consisting of 34 unique designs, with exactly 4 copies of each tile. These tiles are divided into simpler suits and honor categories that form the foundation of all mahjong gameplay.

How Tiles works

Composition of a Standard Set

A complete riichi mahjong tile set is organized into two primary categories:

Simple Suits (Numbered Tiles) The numbered tiles comprise 27 unique types (108 tiles in all), organized into three suits of 9 ranks each:

• Character tiles (Characters/Craks): Numbered 1-9, traditionally representing Chinese currency units
• Bamboo tiles (Bamboos/Sticks): Numbered 1-9, with the 1-bamboo typically displaying a bird
• Circle tiles (Circles/Dots): Numbered 1-9, representing coins or currency

Each of these 27 unique numbered tiles appears 4 times in a standard set.

Honor Tiles (Jihai) The honor tiles comprise 7 unique tiles, each appearing 4 times:

• Wind tiles: East, South, West, North (4 tiles)
• Dragon tiles: Red Dragon, Green Dragon, White Dragon (3 tiles)

Physical Characteristics

Traditional mahjong tiles are typically rectangular, measuring approximately 30mm × 20mm × 18mm. They’re commonly made from bamboo or bone with plastic backing, though modern sets use various materials including plastic or resin. Each tile displays its identity through both Chinese characters and symbolic imagery. Tiles are usually stored in a wooden rack or holder during play to keep them organized and hidden from opponents’ view.

Role in Gameplay

Tiles serve as the complete vocabulary of mahjong. Every action in the game, drawing, discarding, melding, and winning, involves specific tiles. Players draw tiles from the wall at the beginning and throughout the game, building a hand of 13 tiles (14 on the player’s turn). The goal is to arrange these tiles into specific patterns called melds and a winning hand configuration.

The distribution of 4 copies of each tile is crucial to mahjong strategy. Players must track which tiles have been discarded and count remaining tiles to calculate winning probabilities. Since only 4 of each tile exist, players know the exact scarcity of any given tile.

Variations Across Mahjong Styles

While riichi mahjong uses 136 tiles as described above, other mahjong variants exist with different tile compositions. Some regional variants include additional tiles such as flowers, seasons, or jokers, increasing the set size. However, the riichi standard of 136 tiles remains the most widely used internationally.

Walking through Tiles

During a game, a player might think: “I need a 5-circle to complete my hand, but I’ve already seen two 5-circles discarded. Since there are only four 5-circles in the tile set, only two remain in play. My winning chances are lower than I initially thought.”

In another scenario: “The wall has 47 tiles remaining. With four players potentially drawing, I should consider which tiles are most likely to appear soon.”