Sega (Coolot's version)/Sonic the Hedgehog

Sonic the Hedgehog is a very strange and peculiar franchise, so I decided to do my own take on the franchise, starting all the way at pre-Adventure era.

Changes

 * The series' setting is always referred to as Mobius.
 * The games keep the Zones gimmick.
 * The core cast would still consist of Sonic the Hedgehog, Miles "Tails" Prower, Knuckles the Echidna and Amy Rose, although with some tweaks to their personalities.
 * Tails is slightly aged up, although still younger than the others, as he shows more maturity and intelligence.
 * Amy is rather more mature since she would act more professional towards Sonic and she would be more protective towards her friends.
 * Likely as a direct result, Cindy Robinson's voice for Amy sounds more like how she sounds on Sonic Boom onwards rather than the higher-pitched voice from the earlier games using the Studiopolis voice cast.
 * A few ages are slightly tweaked: Tails is 12, Amy is 14, Cream and Marine are both 11 and Silver is 15.
 * Sonic X-Treme would have never been cancelled as Gazebo and /Tiara Boobowski/ would become recurring Sonic characters.
 * Silver, Blaze and Marine would be introduced earlier in Sonic Heroes as an additional team.
 * Sonic SatAM and its Archie series would still set apart from the game canon, although it borrows elements from the canon.
 * The Archie series would start in 2002 in order to avoid the canon incoherence caused by the Adventure continuity reboot and to make clear that this is its own thing.
 * The canon reboot would never happen as Sega and Archie Comics managed to solve the lawsuit that triggered it by paying royalties to the characters' creators in order to keep them under Sega's ownership.
 * The IDW series continues the plotline from the Archie canon although still introducing new characters introduced on it such as Tangle and Whisper.
 * Shadow and the Deadly Six wouldn't be overused.
 * Classic Sonic would be limited to spin-off games set in the Classic era.
 * Wii and Wii U exclusive games would also be released for PC, PlayStation 3, PlayStation 4, Xbox 360 and Xbox One.
 * The games considered abysmal would never exist.
 * Sonic Boom would be more successful.
 * The games would be more connected with characters and ideas of past games seeping into other games.
 * Since Sega owns the video game developing rights for the Olympic Games, the Mario and Sonic at the Olympic Games series would feature other Sega IPs instead of Mario as a way to express their love for games and in order to be published for other platforms.

Mainline

 * Sonic the Hedgehog (1991)
 * Sonic the Hedgehog 2 (1992)
 * Sonic the Hedgehog CD (1993)
 * Sonic the Hedgehog 3 (1994)
 * Sonic & Knuckles (1994)
 * Sonic 3D Blast (1996)
 * /Sonic X-Treme/ (1997)
 * /Sonic Adventure/ (1998, first game with full voice acting)
 * /Sonic Adventure 2/ (2001)
 * /Sonic Heroes/ (2003, final game using the Adventure voice cast)
 * /Sonic: Corruption/ (2006)
 * /Sonic Unleashed/ (2008)
 * /Sonic Colors/ (2010)
 * /Sonic Through Time/ (2011)
 * /Sonic: Lost World/ (2013)
 * /Sonic Forces/ (2017)
 * /Sonic Fusion/ (2020)

Handheld

 * Sonic Chaos (1993)
 * Sonic Triple Trouble (1994)
 * Sonic Blast (1996)
 * Sonic the Hedgehog Pocket Adventure (1999)
 * Sonic Advance (2001)
 * Sonic Advance 2 (2002)
 * Sonic Advance 3 (2004)
 * /Sonic Rush/ (2005)
 * /Sonic Rush Adventure/ (2007)

Spin-offs

 * SegaSonic the Hedgehog (1993)
 * Sonic Spinball (1993)
 * Dr. Robotnik's Mean Bean Machine (1993)
 * Knuckles' Chaotix (1995)
 * Sonic the Fighters (1996)
 * Sonic R (1997)
 * Sonic Shuffle (2000)
 * /Silver and Blaze/ (2005)
 * Sonic & Sega All-Stars Racing (2010, final game using the 4Kids voice cast)
 * Sonic & All-Stars Racing Transformed (2012)
 * Sonic Mania (2017)
 * /Team Sonic Racing/ (2019)
 * Sega All-Stars: Dimensions Collide (2020)

Handheld

 * Sonic Drift (1994)
 * Tails' Skypatrol (1995)
 * Tails Adventure (1995)
 * Sonic Drift 2 (1995)
 * Sonic Labyrinth (1995)
 * Sonic Pinball Party (2003)
 * Sonic Battle (2003)
 * Sonic Rivals (2006)
 * Sonic Rivals 2 (2007)
 * Sonic Chronicles: The Dark Brotherhood (2008)

Sonic Riders

 * /Sonic Riders/ (2006, first game using the 4Kids voice cast)
 * Sonic Riders: Zero Gravity (2008)
 * Sonic Free Riders (2010, first game using the Studiopolis voice cast)

Sonic Storybook

 * Sonic and the Secret Rings (2007)
 * Sonic and the Black Knight (2009)

Sonic Boom
See /Sonic Boom/.

Sega All-Stars at the Olympic Games

 * Sega All-Stars at the Olympic Games (2007)
 * Sega All-Stars at the Olympic Winter Games (2009)
 * Sega All-Stars at the London 2012 Olympic Games (2011)
 * Sega All-Stars at the Sochi 2014 Olympic Winter Games (2013)
 * Sega All-Stars at the Rio 2016 Olympic Games (2016)
 * Sega All-Stars at the Olympic Games Tokyo 2020 (2019)

Television

 * Adventures of Sonic the Hedgehog (syndication, 1993)
 * /Sonic the Hedgehog (SatAM)/ (ABC/Fox, 1993-1996)
 * Sonic Underground (syndication, 1999)
 * /Sonic X/ (TV Tokyo/Fox, 2003-2005)
 * Sonic Boom (Cartoon Network/Nickelodeon, 2014-present)

Comics

 * Sonic the Hedgehog (Archie Comics/IDW Publishing, 2002-2016/2018-present)
 * /Mobius Reign/ (IDW, 2018-present)

Films

 * Sonic the Hedgehog (Paramount Pictures, 2020)