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Sonic Multiverse
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Focus: Games Sonic the Hedgehog, Since: 08-18-06
Founder: N. Harmonik - Stories: 28 - Followers: 8 - Staff: 1 - id: 36055
Any story that involves crossovers between any official Sonicverses go here.

From a Different Perspective by Infamousplot reviews
Crossover of Fleetway Sonic/SEGAverse Tails. SEGA Tails has somehow ended up in the Fleetway comic world with no way to get back, and this Sonic isn't very helpful. Underneath it all though, Tails finds that this Sonic isn't as bad as he seems...
Sonic the Hedgehog - Rated: K - English - Friendship/Angst - Chapters: 1 - Words: 2,453 - Reviews: 14 - Favs: 17 - Follows: 5 - Published: 4/1/2011 - Tails, Sonic
A Scratch In Time by Phoenix Ride reviews
Sonic has turned evil, and Scratch is on a mission to stop him. With help from another dimension can Scratch put an end to Sonic's reign of terror and stop the Black Chaos Emerald's curse? Read, Review, and Find Out!
Sonic the Hedgehog - Rated: K+ - English - Adventure/Suspense - Chapters: 8 - Words: 7,065 - Reviews: 5 - Favs: 2 - Follows: 2 - Updated: 2/10/2011 - Published: 1/19/2011 - Knuckles, Scratch/Grounder - Complete
Crossed Worlds by xXKuriXx reviews
Sonic was always one to take danger on without always thinking about the precautions. However, when he is sent into an alternate dimension where the friends he knew are gone and Dr. Eggman has drastically changed...Full summary inside & Sonic X/SU based.
Sonic the Hedgehog - Rated: T - English - Family/Friendship - Chapters: 5 - Words: 9,118 - Reviews: 28 - Favs: 23 - Follows: 25 - Updated: 6/10/2011 - Published: 9/27/2010 - Sonic, Tails
A New World by Tails Fanatic reviews
Tails has been sucked into another dimension, and now must find a way to return home, before he is caught by the Evil Dr. Robotnik. Who in this new universe will be able to help him? Will he be on his own now, or find a way home before it is too late?
Sonic the Hedgehog - Rated: T - English - Adventure/Friendship - Chapters: 4 - Words: 16,865 - Reviews: 5 - Favs: 8 - Follows: 11 - Published: 7/26/2010 - Tails, Sonic
The Two Sonics Meet by shadicthewritter reviews
hello...yes seen this before? well i forgot one of the rules of fan fic so im rewritting it and the CORRET WAY! so still READ IT FOR THE LOVE OF PANCAKES!
Sonic the Hedgehog - Rated: T - English - Adventure/Suspense - Chapters: 4 - Words: 3,125 - Reviews: 2 - Favs: 2 - Updated: 5/20/2010 - Published: 5/10/2010 - Dr. Robotnik/Dr. Eggman, Sonic
Kaos by The Cinderninja reviews
A chaos beam should create a form of chaos energy such as chaos control, or chaos blast. A chaos beam should not create both of these simultaneously, much less inside of a hedgehog. This particular chaos beam, of course, chose to do the latter. OLD
Sonic the Hedgehog - Rated: T - English - Adventure - Chapters: 14 - Words: 36,952 - Reviews: 56 - Favs: 25 - Follows: 19 - Updated: 11/3/2011 - Published: 3/20/2010 - Sonic, Sally - Complete
SonicWorlds by Sonic Dust reviews
Where did the good robot come from? TWO Sallys? And who the heck is Bane? A tale spanning multiple dimensions. K-plus for violence, and maybe a tiny bit of romance. REVIEW so I feel LUVD! NOTE: Follows the events of "Mech of Mystery".
Sonic the Hedgehog - Rated: K+ - English - Adventure/Drama - Chapters: 7 - Words: 23,415 - Reviews: 11 - Favs: 1 - Updated: 2/9/2002 - Published: 5/14/2001 - Sonic, Sally
Sonic Untied by Tailsic reviews
the Sonic's from AOSTH,SATAM, and Underground come together to save their worlds form The Destroyer.
Sonic the Hedgehog - Rated: K - English - Adventure/Humor - Chapters: 2 - Words: 3,884 - Reviews: 17 - Favs: 10 - Follows: 9 - Updated: 1/21/2010 - Published: 1/10/2009
The Other Empire by Unknownlight reviews
CANCELLED. It's a simple question: What would happen if Eggman and Robotnik switched places? Sega/SatAM crossover.
Sonic the Hedgehog - Rated: K+ - English - Adventure/Humor - Chapters: 7 - Words: 11,984 - Reviews: 22 - Favs: 4 - Follows: 9 - Updated: 7/11/2011 - Published: 10/3/2008 - Sonic, Dr. Robotnik/Dr. Eggman
Mary Sue Goes to Mobius by space-kitten reviews
A teenage girl is teleported into the SatAM cartoon, and things aren't quite what she expected. Meanwhile, Silver must figure out why all the alternate versions of the Sonic canon are merging together into one big mess. T for language, violence.
Sonic the Hedgehog - Rated: T - English - Parody/Humor - Chapters: 4 - Words: 8,232 - Reviews: 23 - Favs: 8 - Follows: 10 - Updated: 10/5/2008 - Published: 8/13/2008 - Sonic, Silver
Cinderella Undercover by keem reviews
Archieverse/SEGA-Sonic crossover. Lara-Su crushes on this reality's version of Sonic the Hedgehog. Perhaps she would be unnerved by such an infatuation, should she take the time to actually think about it. But she doesn't.
Sonic the Hedgehog - Rated: K+ - English - Chapters: 1 - Words: 2,887 - Reviews: 8 - Favs: 12 - Follows: 7 - Published: 7/31/2008 - Sonic - Complete
A Tale of Three Sonics by Monopoly reviews
One shot. satAM/new adventures/Underground xover. Sonic and Sally are just trying to get away from some SWATbots when Sonic starts experiencing some odd sensations...Sort of a crackfic.
Sonic the Hedgehog - Rated: K+ - English - Humor/Mystery - Chapters: 1 - Words: 1,003 - Reviews: 3 - Favs: 5 - Follows: 2 - Published: 7/7/2008 - Sonic, Sally - Complete
Strange vibration by eventyraren reviews
Dr Ivo Robotnics Latest plan to destroy the Sonic Underground is the start on there biggest adventure Su/SatAM/AoStH/SEGA/? Xover.
Sonic the Hedgehog - Rated: K - English - Adventure/Mystery - Chapters: 37 - Words: 34,293 - Reviews: 72 - Favs: 18 - Follows: 10 - Updated: 1/15/2010 - Published: 6/1/2008 - Sonic - Complete
Anywhere but here by Supreme Shadow reviews
Set during the Chaos arc in STC. Sonic abandons his friends after failing in his duty. What nobody knew was where he went. Bah, I suck at summaries. Read and enjoy.
Sonic the Hedgehog - Rated: K+ - English - Hurt/Comfort/Adventure - Chapters: 2 - Words: 1,388 - Reviews: 7 - Favs: 3 - Follows: 6 - Updated: 4/4/2008 - Published: 4/3/2008 - Sonic
Carefree by Forgotten Muse reviews
Sonic becomes trapped in an alternate world with a version of himself so different he's almost unrecognisable. But he soon learns they are more alike than he thinks. In the end, it all comes down to a simple choice. AU, Fleetway & SegaSonic crossover
Sonic the Hedgehog - Rated: K - English - Chapters: 1 - Words: 2,577 - Reviews: 32 - Favs: 99 - Follows: 11 - Published: 12/17/2006 - Sonic - Complete
Hold On by Skyblaze reviews
Crossover between SEGASonic and the SatAm series. At the end of SA2, Shadow uses Chaos Control one last time to save himself from falling...but he ends up in a different world, and face-to-face with a different Sonic. Some Sonadow later.
Sonic the Hedgehog - Rated: K+ - English - Adventure/Romance - Chapters: 17 - Words: 35,550 - Reviews: 191 - Favs: 182 - Follows: 184 - Updated: 2/5/2013 - Published: 1/10/2006 - Shadow, Sonic
Sonic Gaiden: SatAM Saga by Dark Cloud Inc reviews
(SEGA/SatAM crossover) Hi, I'm Amy Rose, G.U.N. agent at your service! Something weird is going on. Sonic isn't acting like himself, and Knuckles is trying to investigate a strange shrine that could start trouble for everyone. (Please R&R)
Sonic the Hedgehog - Rated: T - English - Adventure - Chapters: 2 - Words: 10,257 - Reviews: 5 - Favs: 2 - Follows: 3 - Updated: 5/31/2002 - Published: 5/17/2002
The Freedom Fighter Adventure by Scott da Hedgehog reviews
A SegaSonic/SatAM crossover story. Sonic meets up with....himself?
Sonic the Hedgehog - Rated: T - English - Adventure/Humor - Chapters: 5 - Words: 6,668 - Reviews: 20 - Favs: 14 - Follows: 7 - Published: 4/20/2002
Sonic Switch by Little Goten reviews
Ha ha ha! FOOLS! Did you think this story died? ANYWAY, The next chapter is up. The Shadow Lord has fused all four dimensions of Sonic's world! Will they be able to stop him?
Sonic the Hedgehog - Rated: K+ - English - Adventure - Chapters: 20 - Words: 26,798 - Reviews: 51 - Favs: 4 - Follows: 2 - Updated: 6/21/2004 - Published: 11/28/2002
A New World of Trouble by Matt Lans reviews
The Sonic gang takes a tour of the Egg Carrier, which has been turned into a floating museum. But when Robotnik and Metal Sonic crash the party, the gang finds themselves in a new world of trouble...literally!
Sonic the Hedgehog - Rated: K+ - English - Adventure - Chapters: 9 - Words: 22,523 - Reviews: 16 - Favs: 10 - Follows: 9 - Updated: 2/19/2007 - Published: 3/15/2004
Prince of Shadows by Firehedgehog reviews
Sonic underground xover with other sonic stuff. Sonic is killed and his sibs are heartbroken. Then a few years later Shadow appears and he holds a deep secret, but it might hurt the royal hedgehogs more then help them.
Sonic the Hedgehog - Rated: K - English - Chapters: 10 - Words: 19,637 - Reviews: 157 - Favs: 75 - Follows: 59 - Updated: 1/17/2012 - Published: 9/4/2002
Home is Where Our Journies End by Bryon Nightshade reviews
Amy is thrown into another world. There are some familiar faces, but everything seems wrong, somehow... Crossover, and a study on how our worlds affect our characters.
Sonic the Hedgehog - Rated: K+ - English - Chapters: 7 - Words: 27,987 - Reviews: 9 - Favs: 22 - Follows: 6 - Published: 4/2/2006 - Complete
Sonic United by N. Harmonik reviews
SEGA Archie Fleetway AoStH SatAM SU Anime Sonic X Crossover. Sequel to "The Great Battle." When RoboRobotnik tries to conquer all the Sonicverses again, only eight certain Sonics can save their worlds...and, unbeknownst to them, their fans' worlds too...
Sonic the Hedgehog - Rated: K+ - English - Chapters: 25 - Words: 50,398 - Reviews: 173 - Favs: 49 - Follows: 28 - Updated: 5/1/2012 - Published: 1/10/2005 - Sonic, Dr. Robotnik/Dr. Eggman - Complete
The Great Battle by N. Harmonik reviews
SEGA Archie Fleetway AoStH SatAM Crossover. Adapted from Night of 1000 Sonics Sonic the Hedgehog Issue No. 19. A retelling of RoboRobotnik's attempt to conquer every universe. Revised 11/2010
Sonic the Hedgehog - Rated: K - English - Adventure - Chapters: 6 - Words: 10,221 - Reviews: 24 - Favs: 24 - Follows: 3 - Updated: 11/30/2004 - Published: 9/28/2004 - Sonic - Complete