Green hill zone background by sonicmechaomega999 on DeviantArt

Comm: Green Hill Zone RPG Background by sergeant16bit on DeviantArt

Sonic Studio Green Hill Walpaper by TomiTheHedgehog on DeviantArt

Go On Then, Have Another [Mecha Green Hills Act 1] by ChilliusBower on DeviantArt

Green Hill Zone Rendition Sonic 25th Anniv by UnderworldCircle on DeviantArt

Pastel Sonic Green Hills Zone - in 2023

Sonic Sprite Background 9 by sonicmechaomega999 on DeviantArt

Mushroom Hill Zone by Clutch45 on DeviantArt Stuffed mushrooms, Fantasy art landscapes, Sonic the hedgehog

Custom Green/Emerald Hill Background by JoonTH on DeviantArt

Green Hill Zone by SonicInkFan7000 on DeviantArt