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Play Blue Sphere (Lock-on combination · World edition) Online
Sonic & Knuckles + Sonic The Hedgehog
Play Blue Sphere online, the Sonic & Knuckles lock-on bonus game. Turn across 3D grids, collect every blue sphere, avoid red traps, and chase perfect clears.
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 Blue Sphere
Quick start
Run across the spherical grid and touch every blue sphere while avoiding red spheres. Blue spheres turn red after contact; circle groups of blue spheres to convert the enclosed area into rings. Collect every blue sphere to clear the stage.
Controls
The character runs forward automatically. Left/Right: Turn at intersections. Up: Resume forward travel after bouncing backward from a bumper. A/B/C: Jump. Start: Pause. On the stage-code screen, use the D-pad and action buttons to change digits and character display.
Blue Sphere 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.