Pixilart - Green Hill Zone by BlueBlur91

grassland - Pixilart

Pixilart - Green hill zone act 1 by Gamer2312

Green Hill Zone by MakeshiftKaz on Newgrounds

Pixilart - Green Hill Zone by Anonymous

Editing Green Hill Zone - Free online pixel art drawing tool - Pixilart

Green Hill Zone Background by harounisbackbaby on DeviantArt

Pixilart - Sonic Green Hill Zone by SSilveRR

Pixalry — Sonic Green Hill Zone 91 - Created by Doaly

Green Hill Zone Background by HeartinaRosebud on DeviantArt

sonic zones by JotterB1t - Pixilart

Neo Green Hill Zone Backgrounds by CKarla15 on DeviantArt

Green Hill Zone 31st by ScepterDPinoy on Newgrounds