Board Thread:Questions and Answers/@comment-6858788-20150708003724/@comment-477304-20150708004653

Sonic and Co. have clearly been transported to another dimension, even though there's no context of such a thing happening

The developers probably just want to take the series into a different direction, steer clear of different things we've seen in the past and show us nw stuff instead. The world can be a pretty big place after all.