This adventure zone features many mysterious ruins and secrets. Legends have it that Mystic Ruins was once part of a mythical floating island.
The area is mostly a jungle with a small patch by the cliffs where the train station, chao garden, and Tails' Workshop can be located. Explorers and researchers search the jungle for ruins and artifacts of the ancient civilization thought to have once inhabited the landmass that floats high above the area. Dr. Ivo "Eggman" Robotnik has a base hidden in the deepest part of the jungle.
In the multiverse, Mystic Ruins was taken over and controlled by the Valorians, a faction led by Tails. Eventually, the Infected Invaision overran the ruins, but was quickly fought off by Tails, B.B Hood, and Kurodo Akabane. Sometime after the infected were fought off, the Ruins were replaced in the Multiverse by the Southren Islands.
- Train Station and dock
- Tails' Workshop
- Windy Valley
- Red Mountain
- Ancient Ruins
- Angel Island ruins
- Robotnik's jungle base
The ruins are mostly uninhabited. Aside from Tails and Big the Cat, the main inhabitants are explorers who are there to research the ruins.
A chao garden can also be found in the ruins.