Mobius, also known as Mobius Prime due to its place in the multiverse, is the previous main setting of the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics. It is actually an older version of Earth, approximately 12,000 years into the future, with Mobius' calendar year at mid-late 3237. It is still unknown exactly what was the starting point for their calendar, but it was likely calculated using what the Echidna Tomes call the Days of Fury.