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Translations:Proto:Sonic the Hedgehog (Genesis)/26/en

From The Cutting Room Floor
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Green Hill Zone Marble Zone Sparkling Zone
Special Stage Star Light Zone (Unused)

The demos are clearly from an earlier build, as Sonic dies almost immediately by running into enemies with no player interaction needed. The Special Stage demo also plays in between every stage, rather than being played only at the end of the demo order in the final release.