Board Thread:General Discussion/@comment-1031724-20160828014723/@comment-679780-20160902225033

Divewinds wrote: I think that there's basically a Multiverse, the 'main series' and the Storybook games appear on the Sonic equivalent of Earth-1 (with Sonic 06 being negated). Sonic Boom appears in a separate universe - Earth-2. Sonic Chronicles is Earth-3, Mario and Sonic Earth-4 etc. I believe the Storybook games are part of canon. Sonic mentions Secret Rings in Sonic Generations.

However the World of Camelot and the World of the Arabian Nights exist in secluded sub-universes that can be access by magic. These adventures usually taking place during Sonic's downtime, such as asleep in a library or getting some chilidogs.

Sonic Chronicles taking place in a possible "near future" given the games intro is about Dr. Eggmans final defeat before a few years later.