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Play Greatest Heavyweights (Europe edition) Online
Greatest Heavyweights
Play Greatest Heavyweights online and box with eight legendary heavyweight champions. Enter exhibitions, tournaments or a full career, master high and low guards, build combinations and chase the title.
Browser play
Sega Genesis / Mega Drive — EmulatorJS controls
Default Player 1 keyboard mapping. Change keys in Controller Settings.
| Console button | Keyboard |
|---|---|
| ↑ / ↓ / ← / → | ↑ / ↓ / ← / → |
| A / B / C | S / X / Z |
| X / Y / Z | Q / A / E |
| START / MODE | Enter / V |
Open Controller Settings to configure your keyboard or gamepad. Touch controls are available on mobile.
How to Play Greatest Heavyweights
Quick start
Start with Exhibition to learn jab, hook and uppercut range. Guard high while closing, block the body against low attacks, and build left-right combinations. A six-button pad makes uppercuts easier, though the full game works on three buttons.
Controls
3-button: D-pad moves; A left jab, B high guard, C right jab. Toward opponent+A/C gives hooks; A+B and B+C give left/right uppercuts; Down+B blocks body. 6-button: X/Z throw uppercuts directly. Start: pause.
Greatest Heavyweights 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 · segaMD
- 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.