This is another prototype of Sonic the Hedgehog CD, showcasing the game's evolution before its final release. This version likely incorporated bug fixes, level design refinements, and potential gameplay adjustments compared to earlier builds. The core elements remain consistent with the final product - fast-paced platforming, time travel mechanics, and the signature Sonic gameplay. Sonic Team continued refining the game up until its release.

Sonic the Hedgehog CD (Jun 21, 1993 prototype)

Sonic the Hedgehog 1 for SegaCD