Levels South Island Zone: Palette and layout edit of Green Hill Zone. Indigo City Zone: Palette edit of Marble Zone. Aqua Lake Zone: Palette and tile edit of Labyrinth Zone, meant to resemble Aqua Lake Zone from the 8-bit version of Sonic 2. Winter Hill Zone: Palette and layout edit of Green Hill Zone, with the background from Labyrinth Zone. Celestial Zone: Palette edit of Star Light Zone. Eggmanland Zone: Based on tiles from Metallic Madness Zone in Sonic CD. This was the first time level tiles had been successfully ported from Sonic CD to another game.