Blue Sphere, known as Special Stage Mode in Sonic & Knuckles Collection, is an easter egg video game in the Sonic the Hedgehog franchise, built into the Sonic & Knuckles cartridge for the Sega Mega Drive, accessible by attaching any Mega Drive game cartridge (other than Sonic the Hedgehog 2, Sonic the Hedgehog 3 or Sonic & Knuckles) into the Sonic & Knuckles lock-on port. Blue Sphere is a collection of Special Stages in the same style and engine of those featured in Sonic the Hedgehog 3 and Sonic & Knuckles.

Source: TheGamesDB

Specification: Blue Sphere

Release date

1994-10-18

Genre(s)

,

Developer(s)

Publisher(s)

Players

1

Co-op

No

Rating

E – Everyone

Region

NTSC

Country

US

Videos: Blue Sphere

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