Sonic The Hedgehog - Maps - SMS Power!

Green Hill Zone - Wikipedia

Green Hill - Sonic Generations Guide - IGN

Green Hill Zone Act 2 (Mania) Sheet music for Piano (Solo)

Dreamcast - Sonic Adventure 2 - Green Hill Zone - The Textures Resource

In Green Hill Zone Act 2 of Sonic Mania, it is completely possible to die during the results screen. : r/SonicTheHedgehog

The Spriters Resource - Full Sheet View - Sonic the Hedgehog (Prototype) - Green Hill Zone Act. 2 (Dark)

Sonic 2 (Master System) - Green Hills Zone (SEGA Genesis Remix)

Green Hill Zone Act 2 Progress image - Sonic Mobian Rush - Mod DB

The Spriters Resource - Full Sheet View - Sonic the Hedgehog (Prototype) - Green Hill Zone Act. 2

Sonic Mania reveals Green Hill Zone Act 2, new bosses - Gematsu