Located on South Island, : 4 it is a lush, grassy stage with unique features like droopy palm trees and crumbling cliffs. Green Hill is the first level of Sonic the Hedgehog. Critics have noted a Green Hill-like aesthetic in levels of other games. It has appeared in other games, such as Sonic Adventure 2, Sonic Generations, Sonic Mania, and Sonic Forces. The level and its music have also received positive opinions from critics.

Green Hill Zone is considered to be a classic within both the Sonic the Hedgehog series and in video games in general. It was constructed by level designer Hirokazu Yasuhara and its musical theme was created by Masato Nakamura. Like the game's other levels, Green Hill comprises 3 acts in the third, Sonic fights antagonist Robotnik before moving to the second level, Marble Zone. The level is grassy and lush, with environmental features such as palm trees, vertical loops and cliffs, and is the home of numerous forest animals. Green Hill Zone or simply Green Hill is the first level of the platform game Sonic the Hedgehog, which released for the Sega Genesis in 1991. Green Hill Zone as it appears in the original Sonic the Hedgehog