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SciFi Fantasy Crossovers
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Focus: General All Categories, Since: 03-25-05
Founder: Capt. Pizza - Stories: 184 - Followers: 43 - Staff: 2 - id: 13528
Here you can find the Cream of the Crossover Crop. Every story has been thoroughly vetted and no terrible grammar nor plot hole can be found within these hallowed halls, including stories that diverge so far from canon that they may be considered a crossover with an author's original work.

A Life Reflected by Jinxed-Wood reviews
Torchwood/SG-1 - Torchwood gets an unexpected visitor... Vala Mal Doran
Crossover - Stargate: SG-1 & Torchwood - Rated: K+ - English - Chapters: 1 - Words: 2,352 - Reviews: 23 - Favs: 62 - Follows: 15 - Published: 3/17/2009 - Vala, Jack H. - Complete
Little Brother by NotJana reviews
After 'Chosen' the Scoobies made a point of contacting their families. Several months later it turns out that one relative ... must have slipped Xander's mind. So his friends give him a gentle push out the door - towards the one person that mattered.
Crossover - Buffy: The Vampire Slayer & NCIS - Rated: T - English - Chapters: 21 - Words: 55,682 - Reviews: 442 - Favs: 592 - Follows: 341 - Updated: 7/19/2010 - Published: 8/3/2009 - Complete
Dawning Familiarity by NotJana reviews
The Slayer was the monk's best bet to protect the Key. So they made Buffy a mother. Wishing for a demon-free life for her daughter and with many Slayers about now to do her job, Buffy decides to check out an offer from the Air Force. And their program.
Buffy X-overs - Rated: T - English - Chapters: 42 - Words: 115,508 - Reviews: 432 - Favs: 349 - Follows: 268 - Updated: 12/3/2009 - Published: 11/29/2008 - Complete
Death & Betrayal by MarbleGlove reviews
Harry PotterHighlander Methos takes a young Severus Snape under his wing.
Crossover - Highlander & Harry Potter - Rated: T - English - Chapters: 7 - Words: 23,750 - Reviews: 114 - Favs: 249 - Follows: 50 - Updated: 11/8/2004 - Published: 9/23/2004 - Methos, Severus S. - Complete
An Angel With No Fate by Vampiric Ant reviews
The Cycle continues. War threatens the world. Machines rise against Man. Judgment Day draws near. And Kara Thrace's destiny is far from over. BSG/TSCC crossover. Post Daybreak. Lots of spoilers. John/Cameron. Chapter 74 FINALLY UP! Read and review!
Crossover - Battlestar Galactica: 2003 & Terminator: Sarah Connor Chronicles - Rated: T - English - Sci-Fi - Chapters: 74 - Words: 604,095 - Reviews: 924 - Favs: 133 - Follows: 188 - Updated: 6/30/2015 - Published: 3/31/2009 - K. Thrace/Starbuck, John C., Sarah C., Cameron
Here There Be Monsters by AlElizabeth reviews
Sam and Dean stop in a small town in Washington, only to unwittingly become caught up in a case that the BAU is also interested in. What happens when Dean and the team from Quantico are forced to work together to stop a killer before it's too late? Awesome big brother Dean and hurt Sam.
Crossover - Supernatural & Criminal Minds - Rated: T - English - Mystery/Crime - Chapters: 6 - Words: 34,395 - Reviews: 148 - Favs: 428 - Follows: 191 - Updated: 8/23/2012 - Published: 6/8/2012 - Dean W., D. Morgan - Complete
The Devil Made Me Do It by FireflyFanatic3x reviews
Abaddon is up to something, and Sam, Dean and Cas need to find out what before it's too late. But when 7 bodies turn up in Lebanon, Kansas, the BAU team is called in to investigate two of America's most evasive and dangerous killers. They will not relent until the Winchesters are in custody. But how do you profile a hunter? And how do you save the world from inside a jail cell?
Crossover - Supernatural & Criminal Minds - Rated: T - English - Supernatural/Crime - Chapters: 13 - Words: 45,830 - Reviews: 255 - Favs: 456 - Follows: 354 - Updated: 4/10/2014 - Published: 9/10/2013 - Dean W., Sam W., A. Hotchner/Hotch, P. Garcia - Complete
Sour Cherry Pie Life by FaithDaria reviews
Dean has retired to the civilian life. Too bad no one told the serial killer currently stalking teenagers in Indiana.
Crossover - Supernatural & Criminal Minds - Rated: T - English - Chapters: 1 - Words: 19,693 - Reviews: 149 - Favs: 1,251 - Follows: 239 - Published: 6/4/2011 - Dean W., A. Hotchner/Hotch - Complete
Living Conditions by SweetChi reviews
The apocalypse is over, the world is safe and Dawn's looking forward to her first year at Stanford. Unfortunately, Buffy is having trouble letting go, prompting Dawn to seek a distraction for her overprotective sister to focus on. Enter Sam Winchester.
Crossover - Buffy: The Vampire Slayer & Supernatural - Rated: T - English - Romance/Humor - Chapters: 20 - Words: 64,948 - Reviews: 198 - Favs: 422 - Follows: 119 - Updated: 3/5/2011 - Published: 1/16/2011 - Buffy S., Sam W. - Complete
Stole Soul Picnic by San Antonio Rose reviews
When Hell's civil war spills beyond Earth's borders, no part of the universe is safe. Now hunters and Tok'ra must reunite to save not only their friends and some old enemies but also those who would not deign to get involved. (Sequel to "For Love Is Strong As Death," AU, SPN/SGA/SG-1; background Dean/Lisa, hints of John/Teyla, other spoilery SPN pairing; spoilers through SPN 9.17)
Crossover - Stargate: Atlantis & Supernatural - Rated: T - English - Friendship/Adventure - Chapters: 14 - Words: 71,520 - Reviews: 57 - Favs: 62 - Follows: 58 - Updated: 12/27/2014 - Published: 4/14/2013 - Complete
For Love Is Strong as Death by San Antonio Rose reviews
It's the end of the world as Sam and Dean know it; the Tok'ra just have to keep their hosts alive long enough to see a new dawn. (AU, SPN/SG-1/SGA, sequel to "If Wishes Were Horsemen"; spoilers for SPN 5.22; no slash, mild Dean/Lisa and Sam C./Jack)
Crossover - Stargate: SG-1 & Supernatural - Rated: T - English - Adventure/Family - Chapters: 7 - Words: 32,089 - Reviews: 58 - Favs: 111 - Follows: 30 - Updated: 10/10/2010 - Published: 8/21/2010 - S. Carter, Teal'c, Sam W., Dean W. - Complete
If Wishes Were Horsemen by San Antonio Rose reviews
Crowley was expecting two hunters backed by a cripple. Instead he got two Tok'ra backed by the best minds in two galaxies. Oops. (AU SPN/SG-1/SGA crossover with SGU cameos, sequel to "Snakeheads"; spoilers for SPN 5.20-21)
Crossover - Stargate: SG-1 & Supernatural - Rated: K+ - English - Adventure/Humor - Chapters: 9 - Words: 33,106 - Reviews: 40 - Favs: 120 - Follows: 39 - Updated: 8/18/2010 - Published: 7/23/2010 - Teal'c, Sam W., Dean W., Gabriel - Complete
Snakeheads by San Antonio Rose reviews
Sam. Dean. Gabriel. A hotel full of System Lords. This can't be good. (SPN/SG-1, AU; SPN spoilers up to "Hammer of the Gods," implied-to-mild Gabe/Kali and Dean/Lisa)
Crossover - Stargate: SG-1 & Supernatural - Rated: K+ - English - Adventure/Humor - Chapters: 6 - Words: 18,491 - Reviews: 39 - Favs: 169 - Follows: 37 - Updated: 5/20/2010 - Published: 5/15/2010 - Complete
The Wellspring by vegakrist reviews
2009: In which young Alec is a Manticore escapee and two guys with rock salt-loaded shotguns decide they need a tiny tag-along. *Supernatural/ Dark Angel Crossover*
Crossover - Dark Angel & Supernatural - Rated: T - English - Family - Chapters: 28 - Words: 113,556 - Reviews: 468 - Favs: 487 - Follows: 335 - Updated: 5/24/2010 - Published: 4/26/2009 - Alec, Dean W.
Red Tape by StrangeVisitor reviews
The Crossroads Demon has come to collect Dean's Soul. The first story in the Immortal!Dean Universe
Crossover - Highlander & Supernatural - Rated: T - English - Drama/Humor - Chapters: 1 - Words: 636 - Reviews: 12 - Favs: 41 - Follows: 16 - Published: 7/19/2007 - Complete
Kobayashi Maru by Saphrae reviews
Kobayashi Maru (n): 1. an unbeatable test 2. a no-win scenario. Sergeant Gregory Parker faces his most dangerous negotiation yet. Dean Winchester has 55 hostages, one accomplice, and no clear goal. One-shot.
Crossover - Supernatural & Flashpoint - Rated: T - English - Suspense/Drama - Chapters: 1 - Words: 24,553 - Reviews: 22 - Favs: 61 - Follows: 18 - Published: 2/2 - Dean W., Greg P. - Complete
Everything I do by Tiger Lily Roar reviews
(AU) ON HIATUS - As any parent will tell you, there is nothing they would not do for their child. Running from the sinister world that is Wizarding England, Lily Potter nee Evans has only one person she can trust to protect her son: His father. A very different Harry grows up with his genius, billionaire, playboy, philanthropist father.
Crossover - Harry Potter & Avengers - Rated: T - English - Drama/Family - Chapters: 10 - Words: 81,586 - Reviews: 1266 - Favs: 3,413 - Follows: 4,419 - Updated: 4/25/2014 - Published: 3/15/2014 - Harry P., Iron Man/Tony S.
The Widow and the Wizard by ShunKickShunKers reviews
"Would you like to come with me?" Harry stared at her eyes, big and green like his. Anything would be better than returning with the Dursleys, he believed it firmly. So he slipped this small hand into hers and held onto it tightly. AssassinInTraining!Harry Eventual Clintasha
Crossover - Harry Potter & Avengers - Rated: T - English - Family/Drama - Chapters: 12 - Words: 42,401 - Reviews: 655 - Favs: 2,990 - Follows: 4,506 - Updated: 4/27 - Published: 1/25/2015
My Name Is Yasha Romanov by ShunKickShunKers reviews
Sirius found baby Harry first and asked the Black Widow to keep an eye on him while he dealt with Peter. Unfortunately, he never came back and Harry Potter disappeared from the wizardly world. Ten years later, Yasha Romanov receives a letter from Hogwarts...Rated T to be safe.
Crossover - Harry Potter & Avengers - Rated: T - English - Chapters: 14 - Words: 58,051 - Reviews: 951 - Favs: 3,927 - Follows: 5,788 - Updated: 2/19 - Published: 4/27/2014 - [Black Widow/Natasha R., Hawkeye/Clint B.] Harry P., Hermione G.
I See The Moon by hctiB-notsoB reviews
Gen. "While on the run, Bruce meets a young man who speaks to the moon. He's probably not quite the sanest friend Bruce could have made, but, well...beggers can't be choosers."
Crossover - Harry Potter & Avengers - Rated: T - English - Friendship - Chapters: 13 - Words: 40,930 - Reviews: 4405 - Favs: 10,105 - Follows: 12,075 - Updated: 1/18/2015 - Published: 6/13/2012 - Harry P., Hulk/Bruce B.
Consequences of Actions by Bob Regent reviews
StargateBabylon 5 crossover. A SGC ship fighting the Goauld discovers that they aren't the only enemy Earth has to worry about. Now Completed, Look out for Book two.
Crossover - Stargate: SG-1 & TV X-overs - Rated: T - English - Sci-Fi/Adventure - Chapters: 29 - Words: 105,819 - Reviews: 266 - Favs: 326 - Follows: 143 - Updated: 11/16/2005 - Published: 1/28/2005 - Complete
God's Eye by Todeswind reviews
Harry Dresden gets misplaced after the events of the Darkhallow. Suffice it to say tossed to the edge of the galaxy, he still manages to stir up trouble. After all, the universe exists to trouble Harry Dresden.
Crossover - Stargate: SG-1 & Dresden Files - Rated: T - English - Chapters: 27 - Words: 139,251 - Reviews: 959 - Favs: 1,493 - Follows: 1,684 - Updated: 9/21 - Published: 4/9/2012 - H. Dresden
What Dreams May Come by MarbleGlove reviews
Methos' mind is not one you'd want to be stuck in, aka the one where the inception team attempts extraction on Adam Pierson.
Crossover - Highlander & Inception - Rated: T - English - Chapters: 1 - Words: 2,288 - Reviews: 22 - Favs: 77 - Follows: 15 - Published: 2/21/2012 - Methos, Eames - Complete
An Equal, or Something Like by MarbleGlove reviews
A man who is the British Government isn't used to having equals. It's... nice. Written in response to the prompt: Mycroft thinks he's met his match. He has no idea how far out of his depth he truly is.
Crossover - Highlander & Sherlock - Rated: K+ - English - Chapters: 3 - Words: 4,312 - Reviews: 67 - Favs: 138 - Follows: 151 - Updated: 5/23/2012 - Published: 11/10/2011 - Methos, Mycroft H.
Old Friend, New Life by imjustaguy reviews
L&O:SVU BTVS Detective Olivia Benson discovers an old friend in a very unexpected place. Sequel to Not All Monsters are Demons
Buffy X-overs - Rated: T - English - Drama/Angst - Chapters: 20 - Words: 36,872 - Reviews: 188 - Favs: 67 - Follows: 46 - Updated: 6/28/2005 - Published: 11/11/2004
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