The World you will be traveling through in the game will appear to be multiple mix and match combination courses of Sonic's past, present and future. Friends, foes, and rivals alike from past and present all reside within these courses either assisting or attempting to thwart our hero.

The zone that use to be the limbo that trapped Dr Eggman in the previous game Sonic Generations Will be named the Freedom Zone. The Freedom Zone, after Eggman found a way to transport back to it, is where Eggman now wishes to start his new Eggman Empire. Using a device of his creation he plans to rewrite the universe making the new freedom zone his base of operations. When this devise is used, all who are effected have memories only allowed by the machine for them to keep. The machine cannot destroy life or create, simply rearrange.

At first Sonic is on a normal adventure to thwart The Doctor, when he begins to recall memories of things that haven’t happened, AKA the old universe. These are caused by the unfamiliar changes to the courses and acts. Friends and foes will seem out of place and unknown to the area as if they were thrown in to the world as sonic was. As Sonic meets up with friends, completes more acts, and finds more clues as to what’s going on, His memories become clearer for him and his friends who follow.

As he ventures through the different worlds, his Friends are able to assist him in their own special ways at given points and battles. As sonic and friends complete different given acts, they find their ways to the next worlds using tails’ technology. The game will jump through many different levels eventually leading to The Freedom Zone; Where Eggman will have warped it into his own personal zone of doom by then. This will reside as the final level, a mix and match of all past and present Eggman built zones Sonic has faced.