This is the actual world from the Sonic games. For the MKF world, see Mobius (Mushroom Kingdom Fusion).
Mobius is the world where the Sonic characters live; however the world itself is known as Earth. "Earth" is constantly in threat from villains such as Dr. Eggman or outside threats such as the Black Arms. In Mushroom Kingdom Fusion, it is represented as Mobius (Mushroom Kingdom Fusion).
Sonic's version of Earth starts with its creation and the creation of the seven Chaos Emeralds. However the people fought over the Chaos Emeralds and the Master Emerald was created to negate the energy of the Chaos Emeralds.
Years later, the echidna clan of the Knuckles Tribe was at war with the Nocturnus Tribe. The Nocturnus Tribe used their creations called the Gizoids to nearly conquer the Knuckles Tribe. Fearing the worst Pachacamac tried to steal the Chaos Emeralds from the Chao and was destroyed by their guardian Chaos. The Nocturnus Tribe also suffered as they were captured by the Twilight Cage, leaving only a few echidnas left and one remaining Gizoid. The resulting energy backlash also created Angel Island.
50 years prior to the present day, Professor Gerald Robotnik starts experimenting with the Chaos Emeralds and other parts of the echidna cultures to make the ultimate life form aboard the Space Colony ARK in hopes of curing his granddaughter, Maria. Gerald eventually met Black Doom and used his blood and technology to create Shadow, bringing the ability of Chaos Control to Earth. Gerald's experiments were eventually shut down by G.U.N.
Currently, Sonic saves Earth and other places from Dr. Ivo "Eggman" Robotnik, while meeting friends like Amy and Tails and meeting rivals like Shadow and Metal Sonic, as well as saving other worlds from various threats like Tabuu and in this fan game, Legion.
Sonic's version of Earth is similar to our Earth, but has more islands and a few magical items. Many areas like Green Hill Zone appear throughout the series.
- Christmas Island - Sonic was born here.
- South Island - Sonic lives here.
- Angel Island - Location of the Master Emerald.
- United Federation - Sonic's version of the U.S.A.
- Metropolis - Dr. Eggman's headquarters.
- Space Colony ARK - Gerald Robotnik's former lab.
The name Mobius is to believed to have come from a 1992 interview with Yuji Naka when talking about Mobius strips for Sonic 2. Until Sonic Adventure was released, American and UK versions of the game carried the error. It's worth noting that in the cartoon and Archie comic versions of Sonic, Mobius was revealed to be a future Earth.