Board Thread:Speculation, Theories, and Rumors/@comment-4892653-20170317204901/@comment-679780-20170319213229

Distant Shadow wrote: Mystic Monkey wrote: I have two theories on the plot of Sonic Forces.
 * Modern Eggman went back in time and plunged Classic Sonic into the future, where his evil is law. Now the fool seeks to return to the past (Sonic 1) and undo the future (Sonic Forces) that is Eggman.
 * Modern Eggman went back in time to assist Classic Eggman in conquering the world. Given his wisdom of the outcome of history with Sonic as well as two evil heads better than one, both Eggmen manage victory over Sonic 1, 2 and 3&K. But due to cause and effect, the games were replaced with Sonic Mania. Either during or after Sonic Mania, Sonic of that game will follow Classic Eggmans mysterious benefactor through time to assist Modern Sonic in Sonic Forces.

At least thats my theory. I even have theory how Dr. Eggman was able to time travel, but I doubt Team Sonic would go that far for it. Now those are some cool theories! Theres more to it, but they're more "suggestions" than theories. I doubt Sonic Team would go as far as Sonic CD lore for Sonic Forces.