ArtStation - Sonic the Hedgehog Diorama Series: Green Hill Zone

Sonic Mania - The Cutting Room Floor

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

Enhanced Green Hill Zone [Sonic Mania] [Works In Progress]

Custom / Edited - Sonic the Hedgehog Customs - Green Hill Zone Background (Modern, Genesis-Style) - The Spriters Resource

Steam Workshop::Sonic 1 - Green Hill Zone

I made Green Hill Zone in note blocks for my friend's Minecraft recreation of Sonic The Hedgehog (1991) : r/SonicTheHedgehog

Neo Green Hill In Sonic Mania [Sonic Mania] [Works In Progress]

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

Sonic the Hedgehog Community - Fan art, videos, guides, polls and more - Game Jolt

S2Beta:Prototype Zones/Emerald Hill - Sonic Retro