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Sonic & Knuckles

Blue

Discover how to access the Blue Sphere minigame in Sonic & Knuckles by connecting the game cartridge to the original Sonic the Hedgehog on Sega Mega Drive.

By ···10 min read·Multi-source verified
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Discover how to access the Blue Sphere minigame in Sonic & Knuckles by connecting the game cartridge to the original Sonic the Hedgehog on Sega Mega Drive.

Walkthrough
  1. 1
    Ensure you have both the Sonic & Knuckles cartridge and the original Sonic the Hedgehog cartridge.
  2. 2
    Insert the Sonic the Hedgehog cartridge into the top slot of the Sonic & Knuckles cartridge, utilizing its lock-on technology.
  3. 3
    Power on your Sega Mega Drive.
  4. 4
    The game will boot into Sonic & Knuckles, and the Blue Sphere minigame will become accessible.
Tips
  • This method allows you to play the Blue Sphere minigame, which was originally intended as a bonus stage for Sonic 3 & Knuckles.
  • The lock-on technology was a unique feature of the Sonic & Knuckles cartridge, enabling combinations with other Sonic games.

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