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Play Sonic Chaos (EU_BR edition · English · Edition 145942) Online
Sonic Chaos
Play Sonic Chaos online on Master System. Run across platforms, build speed on open ground and jump past enemies and gaps.
Browser play

Sega Master System — EmulatorJS controls
Default Player 1 keyboard mapping. Change keys in Controller Settings.
| Console button | Keyboard |
|---|---|
| ↑ / ↓ / ← / → | ↑ / ↓ / ← / → |
| 1 / START | X |
| 2 | Z |
Open Controller Settings to configure your keyboard or gamepad. Touch controls are available on mobile.
How to Play Sonic Chaos
Quick start
Use left/right to move and the jump action to cross gaps and platforms.
Controls
Use left/right to move and the jump action to cross gaps and platforms.
Sonic Chaos — About this game
Run across platforms, build speed on open ground and jump past enemies and gaps. A fast approach still needs a safe landing, so read the next stretch before committing to a leap. Check the route below and the way between nearby platforms before moving on. Remember passages already visited and avoid committing to a drop until the next landing is clear. Looking ahead keeps exploration from turning into a series of hurried jumps.
Sonic Chaos 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 · segaMS
- 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.