Green Hills Zone Sprites by Alex13Art on DeviantArt

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

Green Hill Zone – Duth Olec's Cuckoo Cosmos

Sprites and Hoaxes – Shauniversal Studios

Genesis / 32X / SCD - Sonic the Hedgehog - Green Hill Zone Act 2 - The Spriters Resource

Sam Ryall Animation: Green Hill Zone. Act 1

Custom Green Hill Sprites 2.0! by FuzzysArting on DeviantArt

Happy Green Hill Zone by IrisOfTheRepliforce on Newgrounds

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Green Hill Zone Sprites Remastered by SuperMarioFan1lq on DeviantArt

Sonic The Hedgehog Sprite Sheets: Game Boy Advance - Sonic Galaxy.net