CHAPTER 2: FIGHT FIRE WITH FIRE is out now! Sonic and his friends regroup, testing out their gear to liberate another occupied zone. But their fight proves to be more challenging than anticipated.

archiveofourown.org/works/605702...

Chapter 2.

Decades of not harnessing Chaos Control has weakened his connection to it, but it can still be recovered. In a transcendal journey, Shadow goes even further beyond.

Remembering a past encounter with Knuckles puts him up to speed.
archiveofourown.org/works/417362...

Ion think doom's recoverin from that one

Adding all this stuff would've been an ambitious way to expand Sonic Gens and most definitely unrealistic, but it's still fun to just think about it.

Maybe something like that will happen for when Sonic x Silver Generations releases in 10-11 years lol

If, though, their game debuts should be saved for another time, having Jet and Chip be there could be interesting. Especially considering that Chip is Sonic's 'lost' friend; it could be a very bittersweet reunion.

Sage being the third character would be a given.

Zavok and Infinite are honestly interchangeable for the Rival or Boss fight. A boss from Frontiers isn’t that interesting considering that they don't need remastering, which Zavok and Infinite desperately need.

For characters to save, some IDW rep would be cool, such as Whisper and Tangle.

A third section for Modern Sonic wouldn't be a must, since he's already well-represented in the game, but would still be fun nonetheless. It could look like

Desert Ruins (remaking a LW level would be super interesting) -> Imperial Tower -> any other island from Frontiers (aside Chaos Island)

Rival battle could then be with Fang, who has gained in popularity, and the boss battle could be that dragon being from Superstars, giving Classic Sonic a monster of his own games to fight.

Added characters to save could be Mighty, Ray and Trip, further expanding on Classic's cast.

Green Hill -> Chemical Plant -> Stardust Speedway (or any other Sonic CD level, Metallic Madness would be cool too)

A rival battle w Metal Sonic, boss battle w Death Egg Robot.

Then, the second section could look like this:

Sky Sanctuary -> Studiopolis -> any level from Superstars

...in the OG version, which made sense at the time, but since then Classic Sonic's world has been expanded upon.

A second White Space section dedicated to Classic levels could've been fun. The first section could be tweaked a bit too, with the levels being