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Play Oozumou - The Grand Sumo (DECO Cassette) (Japan) (Japan edition · Japanese) Online
Oozumou - The Grand Sumo (DECO Cassette) (Japan)
Play Oozumou - The Grand Sumo (DECO Cassette) (Japan) online. Rise through sumo ranks toward yokozuna.
Browser play

Arcade — EmulatorJS controls
Default Player 1 keyboard mapping. Change keys in Controller Settings.
| Console button | Keyboard |
|---|---|
| ↑ / ↓ / ← / → | ↑ / ↓ / ← / → |
| RetroPad A / B / X / Y | Z / X / A / S |
| L / R | Q / E |
| Insert coin | V |
| START | Enter |
Open Controller Settings to configure your keyboard or gamepad. Touch controls are available on mobile.
How to Play Oozumou - The Grand Sumo (DECO Cassette) (Japan)
Quick start
- Enter the next sumo bout and judge the opponent’s position.
- Move into contact without giving up the ring edge.
- Use the available actions to push or counter.
- Force the opponent out or down and advance toward yokozuna.
Controls
Use the four-way joystick and the two registered DECO Cassette action buttons for movement and sumo actions. Their separate physical roles are not inferred from the shared driver labels.
Oozumou - The Grand Sumo (DECO Cassette) (Japan) — About this game
Rise through sumo ranks toward yokozuna. Time grapples and finishing moves to force opponents from the ring. The immediate objective is to read the current selection or stage, use the confirmed movement and action interface deliberately, and preserve the available time, room or attempts until the next event is reached.
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 · arcade
- 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.