- I consider the Modern/Classic style as something more stylistic than in-canon, and to keep a clean Metal Sonic arc, I put Sonic 4 in the Classic Era.
- Sonic the Hedgehog CD (1993) - Sonic save Amy and Little Planet
- Sonic the Hedgehog 2 (1992) - The Start of the First Death Egg Saga
- Sonic the Hedgehog 3 & Knuckles (1994) - The End of the First Death Egg Saga
- Sonic the Hedgehog 2 GG (1992) - Eggman kidnappe Tails. According to the manuals Sonic and Tails know each other, so it have to happens post-S2 (thus post-S3 too).
## The return of Metal Sonic
- Sonic the Hedgehog 4 (2010) – Metal Sonic is back : needed for every story with Metal Sonic after that.
- Sonic Chaos (1993)
- Sonic Triple Trouble (1994) - Metal Sonic is here.
- Sonic Spinball (1993) - Happenned in some sort, can be seen as "canon" as the Veg-O-Fortress is referenced in Sonic Origins
- Sonic Labyrinth (1995) - Eggman try to make Sonic slower
- Tails' Skypatrol (1995) - Tails fight a witch.
- Tails Adventure (1995) - Tails fight birds (I use the US interpretation of the game, as it makes a more compeling story arc imo)
- Knuckles' Chaotix (1995) - Knuckles fight Metal Sonic too.
- Sonic Blast (1996)
- Sonic 3D Blast (1996) - Sonic & Co. travels to Fliky Island
- Sonic the Fighters (1996)
- Sonic R (1997)
## New classic adventures
I've put the newest classic stories here, as it seems that the characters known each other in the comics.
- Sonic Generation (2011) - As Sonic seems to come from the first games, it makes the next placement more logical.
- Sonic Mania (2017) - Metal Sonic seems to come back here, so it's before Chaotix and Triple Trouble.
- Sonic Forces (2017) - Classic storyline
- Sonic Mania Adventure (2017) - Back to is time, Classic Sonic fight Eggman that made some shenanigans.
