Board Thread:Questions and Answers/@comment-30300307-20170426071235/@comment-4220590-20170426114502

Mystic Monkey wrote: There is not necessary the truth. All we know is that Eggman used a new power for his army which let him take over the world, and that Classic Sonic ended up in the present due to that power (we are not even sure if Eggman brought him there intentionally)
 * Sonic Forces will be the forth game in the over-all series to impliment time travel. This time Dr. Eggman goes back in time to remove Classic Sonic from the past, No Soic to stop Eggman means Eggman can conquer the world. For some reason Modern Sonic is stranded in the new timeline and must team up with his past self to restore the timeline to how it was.