Sonic The Hedgeblog — Past Green Hill 'Tails & The Music Maker' SEGA

Sonic Prime Flashback's sprites in Advance Style 👍 (Artist: @Kanimy_0) : r/SonicTheHedgehog

Steam Workshop::Green Hill Zone - Sonic the Hedgehog

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

Sonic the Hedgehog Sprite Sheet - Evil Sonics Sonic Hacks

Sonic 1 HD: Green Hill Zone by Hyperchaotix on DeviantArt

ArtStation - A Enhanced Version of Green Hill Zone

Custom / Edited - Sonic the Hedgehog Customs - Green Hill Zone - The Spriters Resource

sonic sprite test 2 : r/SonicTheHedgehog

Novos sprites (Green Hill) - Sonic Genesis

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