Eggman in his all-new Death Egg Robot mech. After racing through the Zone, and overcoming the DD Wrecker along the way, they are eventually met by Dr. Sonic the Hedgehog, Miles 'Tails' Prower and Knuckles the Echidna are all transported to Green Hill Zone by the Hard Boiled Heavies after an attempt to stop them from using the Phantom Ruby the robots excavated on Angel Island. In Encore Mode, Green Hill Zone looks similar as in Mania Mode, except that it has an orange sky and almost all of the area exhibits a strong yellowish hue matching the sky. Also, at the bottom of Act 2, there are subterranean lakes. There are as well new models of totems in these depths, albeit larger, but otherwise following the same patterns as the smaller ones. These caves have rocky floors with smaller vegetation and rock formations.

The lower areas of the Act are set in caves that are more complex than those in Act 1. This section of the Zone also has very tall areas, which are connected to each other by ziplines and wooden bridges. However, the mountains in the background are now much closer and smoother, with numerous visible waterfalls and caves underneath them and totems in front of them. In Act 2, the foreground is pretty much the same. The Act itself also ends in a cave with a beautiful subterranean lake in the background and small rock formations. These underground areas are not very dark, as a lot of sunlight shines into them. Also, underneath this area, there is a series of brown caves that are slightly flooded with water. The foreground also features one wooden bridge after another. In the background, a clean, blue lake is seen in front of some short and spiky mountains with waterfalls coming out of them. The soil is brown and has a checkered pattern on it, and is covered by lime grass with slightly darker lines on it. Also decorating this area are thin, tall palm trees, lavender stones, and totems. Presented as a tropical area taking place underneath a clean, light blue sky with white clouds, it is full of moving flowers that take the appearance of either sun flowers or lavender flowers. In Act 1, Green Hill Zone is a slightly modified version of its counterpart from the original Sonic the Hedgehog.

Sonic mania speedrun