File:Neo Green Hill Act 2 Tile Sheet.png - Sonic Retro

Green Hill, Sonic Wiki Zone

Green hill zone background by sonicmechaomega999 on DeviantArt

Sonic Mania: Green Hill Zone Act 2 Revealed — GAMINGTREND

New Sonic Mania Screenshot Showcases Green Hill Zone Act 2 – SoaH City

Sonic the Hedgehog/Green Hill — StrategyWiki

Custom / Edited - Sonic the Hedgehog Customs - Green Hill Zone Chunks (Prototypes, Sonic Mania-Style) - The Spriters Resource

Green Hill Zone, Kyle's Pixels Wiki

Sonic The Hedgehog Green Hill Zone - Game Gear 8-bit - V3 Standard

Green Hill Zone - Updates

Proto:Sonic the Hedgehog 2 (Genesis)/Simon Wai Prototype/Green