Sonic the Hedgehog Timeline (Game Continuity)

Sonic The Hedgehog Timeline 
Little is known of this history before history. At some point, the Lords of Chaos brought about the creation of the Chaos Emeralds through unknown means. Some time later, a race of alien beings known as the Ancients arrived on Earth, bringing the Chaos Emeralds with them from their home planet.
After some time, the enemy that destroyed the homeworld of the Ancients followed them to Earth. In the ensuing battle, a majority of the Ancients were wiped out, and the enemy was sealed in Cyber Space. The few remaining Ancients moved to what would become Angel Island, where they died out after a generation.
The planet was at some point controlled by a futuristic human society. Some time after, Zero the Hedgehog, the first animoid, was created, soon followed by many others. Conflicting records make it unclear if this was before or after the destruction of the Ancients. Either way, the two societies did not appear to have any significant contact.
After Zero’s escape, the world became consumed in what is known as the Chaos War, fought over the newly-discovered Emeralds. The war was so disastrous that it destroyed any semblance of society on the planet, as well as any trace of the history that came before it. Even the war itself slipped into legend and rumor, and was eventually forgotten. (As detailed during the events of Speed of Time)
Some time later, Dark Gaia rose from the Earth and did battle with Light Gaia, in a period known as the time of awakening. All that was known about this battle was recorded in the Gaia Manuscripts. (As detailed during the events of Sonic Unleashed)
Thousands of years BE The Echidna species, long broken into separate tribes, were at war with each other. One clan, led by Chief Pachacamac, controlled not only the Chaos Emeralds, but the Master Emerald as well. But when they attempted to use the power of these Emeralds against their enemies, they were suddenly attacked by Chaos, a creature who absorbed all seven Chaos Emeralds, and used their power to obliterate nearly the entire Echidna race, before being sealed away in the Master Emerald by Tikal. Though the following details are not entirely known, the landmass surrounding the Emerald shrine was subsequently lifted away from the surface of the planet, becoming what is now known as Angel Island. (As detailed during the events of Sonic Adventure)
Over 2,000 years BE Black Doom, during one of the Black Comet’s earliest passages past Earth, began the construction of a fleet, disguised as ruins on the planet’s surface. (As detailed during the events of Shadow the Hedgehog (2005))
~50 BE Prof. Gerald Robotnik, with assistance from Black Doom, completed work on Project: Shadow, the Ultimate Life Form. Shortly after, the military raided the ARK in which Shadow and Gerald lived, executing all aware of Shadow’s existence. Shadow was sent on an escape pod to the surface of the planet, where he was discovered by Lt. Alfred Robotnik, Gerald’s son. Alfred was led to believe that Shadow was responsible for the deaths on the ARK. (As detailed during the events of Sonic Adventure 2, Shadow the Hedgehog (2005), and Birth of Blacklight)
~40 BE Lt. Alfred completed work on Project: Sunlight, an attempt to correct his father Gerald’s mistakes. Sunlight was killed soon afterwards. (As detailed during the events of Birth of Blacklight)
Unknown Amount of Time Later Lt. Alfred discovers the Phantom Ruby. Fearing its power, he sends it to another dimension. (As detailed during the events of Sonic Forces Special 2)
June 23, 19 BE Sonic the Hedgehog was born under unknown circumstances. 
~10 BE Researchers in Soleana began the Solaris Project, an attempt to unlock the secrets of time-travel through the study of the Flame of Hope. A failed experiment led to the death of a majority of the research team, including the Duke of Soleana himself. The Flame of Hope was split into the spirits of Iblis and Mephiles, the former of which was sealed within his daughter Elise, and the latter in a mysterious device known as the Scepter of Darkness. (As detailed during the events of Sonic the Hedgehog (2006)
Sonic The Hedgehog Timeline -Game Canon
Flicky
Sonic The Hedgehog 1
Tails Adventure 
Sonic CD
Sonic The Hedgehog 2 (after this Classic sonic & Classic Tails go to the future for Generations)
Sonic The Hedgehog 3
Sonic & Knuckles
Sega Sonic The Hedgehog 
Sonic Chaos
Sonic Triple trouble 
Sonic The Fighters
Sonic Mania (Travels Back to the Future for Forces after mania)
Knuckles Chaotix (takes place while Classic sonic is in the future)
Tails skypatrol (takes place during Knuckles Chaotix)
Sonic Mania Adventures 
Sonic Mania:Encore Mode
Sonic IDW- Seasons of Chaos
Sonic IDW- Amy’s new Hobby
Sonic IDW-Sonic learns to drive
Sonic IDW-Eggmans Birthday
Sonic Superstars
Sonic Blast 
Sonic Labyrinth 
Sonic 3D Blast
Sonic IDW-Tails 30th Anniversary Special 
Sonic Drift
Sonic Drift 2
Sonic R
        Modern Era Begins- 5 years later
Sonic 4-EP 1
Sonic 4-Episode Metal Sonic 
Sonic 4-EP 2                
Sonic Adventure 
Sonic Shuffle
Sonic Adventure 2
Sonic Advance 
Sonic Advance 2
Sonic Heros
Shadow the Hedgehog
Sonic Battle
Sonic Advance 3
Sonic Rush
Sonic Riders
Sonic 06(erased from timeline but remembers fragments of this event)
Sonic Rivals
Sonic Rivals 2
Sonic Rush Adventure 
Sonic Riders Zero Gravity
Sonic Free Riders
Sonic and the Secret Rings
Sonic and the Black Night
Sonic Unleashed 
Sonic Colors + Rise of Wisp 
Sonic Generations
Sonic Lost World
Sonic Channel:Comics
Sonic Forces prequel comic-Moment of Truth
Sonic Forces Prequel comic-Stress Test
Sonic Forces Prequel comic-Rise of Infinite 
Sonic Forces-Episode Shadow
Sonic Forces
Sonic IDW:Phase 1- Neo Metal Sonic
2019 Sonic IDW Annual
Tangle and Whisper-Sonic IDW miniseries 
Sonic IDW:Phase 2- Metal virus 
2020 Sonic IDW Annual (takes place during Metal virus)
Sonic IDW 5th Anniversary Comic - Familiar Territory 
Sonic IDW-Zeti Hunt saga
Team Sonic Racing-One Shot Comic
Team Sonic Racing
Sonic IDW-free comic book day:Deep Trouble 
Sonic at the Tokyo Olympic Games 2020
Bad guys:Sonic IDW Mini series 
Sonic IDW-Trial by fire
Impostor Syndrome:Sonic IDW mini series
TailsTube:Ep 1
TailsTube:Ep 2
2022 Sonic IDW Annual
Sonic IDW:Phase 3-Comics 50-56
Scrapnik island:Sonic IDW mini series 
Sonic IDW:Phase 4-Comics 57-64
Sonic IDW:Phase 5-Comics 65-70
TailsTube:Ep 3
Sonic Frontiers : Prologue Comics - Convergence
Sonic Frontiers : Knuckles Prologue- Divergence
Sonic Frontiers 
TailsTube:Ep 4
The Murder of Sonic The Hedgehog 
Sonic IDW:Endless Summer Comics
Sonic IDW - 900th Adventure