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Play Koi Koi Mahjong (Japan edition · Revision v08 · Japanese) Online
Koi Koi Mahjong
Play Koi Koi Mahjong online. Build a valid Japanese mahjong hand through a cycle of drawing and discarding tiles. Consider how each discard affects your remaining combinations and watch the table before chasing a more valuable hand.
Browser play
Neo Geo Pocket — EmulatorJS controls
Default Player 1 keyboard mapping. Change keys in Controller Settings.
| Console button | Keyboard |
|---|---|
| ↑ / ↓ / ← / → | ↑ / ↓ / ← / → |
| A / B | X / Z |
| OPTION | Enter |
Open Controller Settings to configure your keyboard or gamepad. Touch controls are available on mobile.
How to Play Koi Koi Mahjong
Quick start
Koi Koi Mahjong: Choose a table and inspect your starting hand. Keep useful pairs and connected tiles, discard isolated tiles carefully and check the win conditions before calling.
Controls
Directions select a tile or displayed call. A confirms the discard or command; B cancels a selection when available. Read the on-screen choices before calling or declaring a win.
Koi Koi Mahjong — About this game
Koi Koi Mahjong: Build a valid Japanese mahjong hand through a cycle of drawing and discarding tiles. Consider how each discard affects your remaining combinations and watch the table before chasing a more valuable hand.
Cheats
No cheats have been added for this edition.
Player verification and sources
Browser play was reviewed before this edition was published in the catalogue. The date below is the catalogue publication date, not the game’s original release date.
- Browser test and catalogue publication date
- Browsers and devices
- PC: Chrome, Edge and Firefox. Mobile: Chrome on Android and Safari on iPhone and iPad.
- Player engine and core
- EmulatorJS 4.3.0-pre · ngp
- Tested by
- rwEmulator
Sources and editorial basis
rwEmulator reviews edition metadata, release information, game manuals and first-hand browser-play notes. Available manuals are linked below; the editorial policy explains how facts are checked and corrections are handled.