ArtStation - Sonic the Hedgehog 2 - Concept Green Hill Zone

First images of Sonic Prime in newly-discovered concept art - Tails' Channel

Sonic the Hedgehog Archives - Page 3 of 16 - Nintendo Everything

ArtStation - SONIC BOSS Hill Top Zone

ArtStation - Sonic tribute : Green Hill

ArtStation - Sonic Green Hill Zone

ArtStation - Green Hill Zone - Sonic the Hedgehog

Sonic in Green Hill Zone by Merlim

Sonic and Green hill zone in my design by MotoAn2021 on DeviantArt

ArtStation - Green Hill Zone

Portfolio - Art - Pixel Artist & Animator (Freedom Planet 2 / Kyle & Lucy / Sonic Studio), Page 2

ArtStation - Green Hill Zone