S2Beta:Prototype Zones/Neo Green Hill - Sonic Retro

Sonic The Hedgehog Sprite Sheets - Sega Genesis - Sonic Galaxy.net

Mighty in Sonic 1 Rev 1.1 with Knuckles Chaotix sprites (S1 Hack

Sonic the Hedgehog - Green Hill Zone by SonicDash57 on DeviantArt

ArtStation - A Enhanced Version of Green Hill Zone

Sega Genesis / 32X - Sonic the Hedgehog - Green Hill Zone & Ending - The Spriters Resource

Sonic the hedgehog green hill zone 8 bit sprite - AI Generated Artwork - NightCafe Creator

Custom / Edited - Sonic the Hedgehog Customs - Green Hill Zone Chunks (Prototypes, Sonic Mania-Style) - The Spriters Resource

Sonic in Green Hill Zone [Sprite Animation/2K Special]

Green Hills Zone Sprites by Alex13Art on DeviantArt

Sonic The Hedgeblog — In early 'Sonic 1′ screenshots the Green Hill Zone