Green Hill Zone Background by HeartinaRosebud on DeviantArt

Hiroblix by Pixel9Bit on DeviantArt

Alternate Hat Kids Inspired by Ai by ZayaWaya on DeviantArt

Nani o kangaete iru no ~ Random-Island Intro by Rachi-Rode-Hills on DeviantArt

Bonus: Green Hill Zone by Armandocop012 on DeviantArt

Sonic.Exe NB-R Green Hill Zone Background by Eclyse069 on DeviantArt

Green Hill Zone Background by pedrov9 on DeviantArt

Green Hill Zone Background (Night) by JadyellySparkle on DeviantArt

Green Hill Zone by StarShiney-Chan on DeviantArt

Twinkle Snow: Background Study by Heavy-Megatal on DeviantArt