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Play Janshirou (Japan edition · Japanese) Online
Janshirou
Play Janshirou online. Build Japanese mahjong hands against three computer opponents, balancing a useful draw with the risk of your next discard.
Browser play

Game Boy (GB) — EmulatorJS controls
Default Player 1 keyboard mapping. Change keys in Controller Settings.
| Console button | Keyboard |
|---|---|
| ↑ / ↓ / ← / → | ↑ / ↓ / ← / → |
| A / B | Z / X |
| START / SELECT | Enter / V |
Open Controller Settings to configure your keyboard or gamepad. Touch controls are available on mobile.
How to Play Janshirou
Quick start
Choose 1P and confirm with START, then select opponents and rules with the D-Pad and A. On your turn choose a tile and A-discard. Use A for CHECK prompts, selecting a call only if it helps a valid hand. START changes the sub-screen to inspect the other discards.
Controls
Directional pad: move the cursor. A: confirm, discard or acknowledge CHECK prompt. B: cancel or go back. START: start/confirm; switch sub-screen in play.
Janshirou — About this game
Build Japanese mahjong hands against three computer opponents, balancing a useful draw with the risk of your next discard. Free matches let you choose opponents and rules, while Academy mode gives a sequence of rivals to overcome. The compact table shows only part of the other players’ discards at once, so switching the sub-screen matters as much as watching your own tiles. Check every opponent before pushing a dangerous hand, and record the Academy passwords when you advance. A separate calculation mode lets you examine scoring.
Janshirou Game manuals
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 · gb
- 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.