Green Hill Zone is the first zone (stage) in Sonic the Hedgehog. Green Hill Zone in the first Sonic the Hedgehog. Both sides have walk-off edges and there is no lower boundary. The alternate music track is a jazzy instrumental remix of Live and Learn, the main theme of Sonic Adventure 2, with a small instrumental portion of Sonic Boom, the main theme of the US version of Sonic CD.The main music track is the self-titled Green Hill Zone, an upbeat rock remix of the theme that plays on the level of the same name in Sonic the Hedgehog.
The background consists of a giant shuttle loop with a 1-Up video monitor above it, as well as various other parts of the Green Hill Zone in Sonic the Hedgehog. The center of the stage can also be attacked, and attacking it enough will cause it to crumble.
A blue lamppost will occasionally rise from the ground, and attacking it will turn it red and make it spin to damage any opponents that make contact with it. The stage consists of a large foreground stretching to the left and right blast lines with a wooden bridge to the left and a large curved depression in the middle.
