S2Beta:Prototype Zones/Emerald Hill - Sonic Retro

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

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Sonic the Hedgehog Sprite Sheet - Evil Sonics Sonic Hacks

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

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

The Textures Resource - Full Texture View - Sonic Adventure 2 - Green Hill Zone

Pixel Joint Forum: Sonic 1 Title separate BG sprites?

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

Imgur: The magic of the Internet

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