ArtStation - Sonic the Hedgehog Diorama Series: Green Hill Zone

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

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

The Leaf Forest Zone - Sonic Advance backgrounds

Sam Ryall Animation: Green Hill Zone. Act 1

Pixel Joint Forum: Sonic 1 Title separate BG sprites?

S1MD Green Hill Zone tilesets in S1MDMS style by HidroGeniuns on DeviantArt

Modding Sprites in Sonic Mania Problem

Imgur: The magic of the Internet

CodenameGamma🏳️‍⚧️ on X: The Sonic Mania Sprites in S3k. all it took was some code moving sadly the S2 sprites caused crashing. gonna try the S1 sprites for sonic next. #SonicOrgins /

Sonic Hacking Contest :: The SHC2021 Contest :: Sonic Vintage :: By ZachmanAwesomeness