The tiles

Three suits

136 tiles: 34 different ones, four of each. Three suits run from 1 to 9:

1 2 3 4 5 6 7 8 9

1 2 3 4 5 6 7 8 9

1 2 3 4 5 6 7 8 9

Most players use the Japanese names man, pin and sou.

Tap every pin (circles) tile in this hand.

1 4 7 2 5 8 3 6 9 E Wh G R

Check

Which dragon is which

White is the blank (or framed) tile, green is 發, red is 中. The corner shows Wh, G and R.

Which one is the green dragon?

Wh G R 2

Simples and terminals

Simples are 2 to 8, like 5. Terminals are the 1s and 9s, like 1 and 9. Many scoring rules use these two words.

Tap every terminal: the 1s and 9s.

1 2 9 1 8 9 1 2 3 7 8 9 Wh

Check

Red fives

5 5 5

On Riichi Arena one 5 of each suit is red. It plays like any 5 but is a bonus tile (a dora), shown with a gold glow.