Mount Mobius

Mount Mobius is a location in Sonic the Hedgehog Spinball where the game's main storyline takes place.

It is asserted to be the highest mountain on Planet Mobius.It is a single, titanic volcano, rising up out of the sea, and has been taken over by Dr. Robotnik as his main base of operations and converted into a mechanical pinball fortress dubbed the Veg-O-Fortress.