Stargate: SG-1 Crossovers
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Symbiosis by Meushell
A few Tok'ra crash near Deep Space Nine. From there, they and the DS9 staff discover a potential threat to both universes.
Crossover - StarTrek: Deep Space Nine & Stargate: SG-1 - Rated: K+ - English - Adventure/Friendship - Chapters: 6 - Words: 6,498 - Favs: 10 - Follows: 19 - Updated: 3/6 - Published: 2/9 - [S. Carter, Martouf/Lantash] Jadzia D., B. Sisko
Dismanteling Destiny II: Reminiscence - The Old, New & Unexpected by ImaliFegen reviews
The Episode rewrite of Ties That Bind, The Powers That Be, Beachhead and Ex Dues Machina. (Full summary for the fic inside.)
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Adventure/Romance - Chapters: 1 - Words: 3,233 - Reviews: 1 - Follows: 1 - Published: 3/6
The restoration of the UNSC by Warwolff2003 reviews
Reach has Fallen and the newly promoted Captain Jacob Keyes has taken his small fleet and st course for Earth. However, this is not the Earth those in the UNSC remember. This is my version of a similar story by originally by Samsara Sage which was adopted by Ultimate Deathsaurer 2
Crossover - Stargate: SG-1 & Halo - Rated: T - English - Sci-Fi - Chapters: 12 - Words: 43,659 - Reviews: 84 - Favs: 142 - Follows: 214 - Updated: 3/5 - Published: 12/22/2022 - S. Carter, J. O'Neill, Master Chief/John-117, J. Keyes
Humanité by Audragon reviews
La mort était douloureuse. Et lorsqu'on était Maître de la Mort, elle était aussi pleine de révélations. Mais lorsqu'on l'était, ce passage n'était que le début, le début vers une nouvelle existence dans laquelle la Mort elle même devenait une protectrice offrant une voie d'accomplissement pour celui qu'elle avait choisi...
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - French - Fantasy/Sci-Fi - Chapters: 6 - Words: 41,149 - Reviews: 39 - Favs: 88 - Follows: 106 - Updated: 3/4 - Published: 1/10 - C. Kawalsky, Thor, Harry P.
Stargate Etheria by Starfox5 reviews
Entering a gate leading to an unknown planet while dodging fire wasn't too uncommon for SG-1. Meeting strange new people wasn't unusual either for the Best Friends Squad. But figuring out how to deal with each other, the remnants of the Horde Clones and the Goa'uld threat without a D.H.D. for the Stargate on Etheria? That was new for both.
Crossover - Stargate: SG-1 & She-Ra and the Princesses of Power - Rated: T - English - Adventure/Sci-Fi - Chapters: 76 - Words: 521,258 - Reviews: 178 - Favs: 150 - Follows: 163 - Updated: 3/4 - Published: 9/25/2021 - [Adora/She-Ra, Catra] S. Carter, J. O'Neill
Harry Headlines At Glastonbury by tyrannicpuppy reviews
Since the war, Harry has taken to exploring long-forgotten places as a chance to escape his extensive and unwanted fame. But what he found in the depths of Glastonbury Tor will change not only his own life, but the future of all.
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - English - Adventure/Sci-Fi - Chapters: 37 - Words: 241,996 - Reviews: 838 - Favs: 2,347 - Follows: 3,271 - Updated: 3/2 - Published: 10/1/2021 - [Harry P., Hermione G.] Luna L., Merlin
A Legacy of Chaos: A Ship of Line Story by andrewjameswilliams reviews
In the aftermath of Ethan Rayne's spell Xander Harris finds himself transformed into a capsuleer and finds himself drawn into the battle between Stargate Command and the Goa'uld Empire. *Chapter one edited.*
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: T - English - Sci-Fi/Adventure - Chapters: 15 - Words: 86,539 - Reviews: 288 - Favs: 821 - Follows: 1,009 - Updated: 3/2 - Published: 3/20/2020
Araiansu by Lerris reviews
This is a multicross, initially focused mostly on Stargate. Ranma from Ranma 1/2 is added at the start and a couple other series are added later. This is a story about how the great alliance came to be. Politics warning plus some mentions of religion.
Crossover - Stargate: SG-1 & Ranma - Rated: T - English - Sci-Fi/Fantasy - Chapters: 52 - Words: 409,878 - Reviews: 109 - Favs: 106 - Follows: 134 - Updated: 3/1 - Published: 10/14/2022 - S. Carter, Ranma
MoonGate by Antonio Cabanas reviews
When two members of an SG team end in the Moon Palace things start to go sideways...
Crossover - Sailor Moon & Stargate: SG-1 - Rated: K+ - English - Adventure - Chapters: 2 - Words: 5,606 - Reviews: 1 - Favs: 5 - Follows: 10 - Updated: 3/1 - Published: 2/3 - Haruka T./Sailor Uranus, Rei H./Raye/Sailor Mars, S. Carter, J. O'Neill
Bound By Destiny by JacGoBama16 reviews
The Colonials discover they are not alone in the Universe. As the SGC races against time to find the Lost city of the Ancients, the Colonials erupt onto the Galactic stage with a tenacious fury unlike anything the Galaxy has seen. Destinies decided thousands of years ago begin to become clear as other forces watch from afar
Crossover - Stargate: SG-1 & Battlestar Galactica: 2003 - Rated: T - English - Sci-Fi - Chapters: 1 - Words: 39,428 - Reviews: 10 - Favs: 29 - Follows: 41 - Published: 2/26
Space Wizards Book 1 : The dawn of the DSF by yoden reviews
A sequel to Esama's "Wizards IN SPACE". As the crew of an alien spaceship, Harry and the DA must make their own place in a world torn by war. Between discovering the secrets of alien tech, creating their own, fighting for survival and building up an international organization, they are up for an interesting year.
Crossover - Harry Potter & Stargate: SG-1 - Rated: T - English - Adventure/Drama - Chapters: 7 - Words: 37,533 - Reviews: 50 - Favs: 190 - Follows: 316 - Updated: 2/26 - Published: 11/11/2020 - Harry P., Albus D.
Stargate SG-1: The Fifth Race by i-defy-fate reviews
AU! Heavily inspired by the story: Project Blue Book by AmeliusTheAlteran. Elements of Halo will be here as well because I love the design of the ships, weapons and equipment they use. This is a story of what a united earth could accomplish when given a common goal. I plan for this to be at least 200-250K words. Starting chapter 2 expect to see 10k words per chapter. No pairings!
Crossover - Stargate: SG-1 & Halo - Rated: M - English - Adventure/Sci-Fi - Chapters: 2 - Words: 10,274 - Reviews: 15 - Favs: 82 - Follows: 106 - Updated: 2/26 - Published: 11/23/2019 - S. Carter, D. Jackson, J. O'Neill, Teal'c
Slayer Scrolls by Ellmarr
The Fates of two young children and the worlds rest in the hand of a Multi-Cross Over events - Buffy the Vampire Slayer, Stargate SG-1, TMNT, Gargoyles, Criminal Minds, Skyrim, Supernatural. Takes place just before the defeat of the First. Sorry about having to delete the other one
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: M - English - Adventure/Sci-Fi - Chapters: 14 - Words: 114,216 - Favs: 6 - Follows: 9 - Updated: 2/25 - Published: 1/27 - Faith L., Gen. Hammond, J. O'Neill
Dismantling Destiny: Ends, Transitions & New Beginnings by ImaliFegen reviews
This is a time travel fix-it for SGA S5E19 -'Vegas' crossed over with Stargate SG1 S9 & S10. (See full summary inside.)
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Adventure/Romance - Chapters: 20 - Words: 61,550 - Reviews: 18 - Favs: 5 - Follows: 7 - Updated: 2/25 - Published: 1/27 - C. Mitchell, John S. - Complete
A Veiled Escape by TannaraMoonvale reviews
The war was over, the light lost. Few of the Light remain. Hermione spent her time studying the Veil, trying to unravel it's mysteries in hope it could help them escape.
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - English - Adventure/Friendship - Chapters: 1 - Words: 5,413 - Reviews: 8 - Favs: 30 - Follows: 29 - Published: 2/24 - S. Carter, J. O'Neill, Harry P., Hermione G. - Complete
Robotech: The Stargate Saga by andrewjameswilliams reviews
As robotechnology changed humanities destiny so does a chance discovery beneath the remains of the Giza plateau revealing both an ancient legacy and an ancient threat.
Crossover - Stargate: SG-1 & Robotech/Macross - Rated: T - English - Sci-Fi/Adventure - Chapters: 26 - Words: 137,812 - Reviews: 217 - Favs: 238 - Follows: 269 - Updated: 2/24 - Published: 5/23/2022 - S. Carter, D. Jackson, Rick/Hikaru, Claudia
SG Universes at War by celian Cogitore reviews
In a parallel universe, the Tau'ri faces a bloody war between the Systems Lords Anubis and Apophis. The situation is affected by the arrival of a strange character: 'Gilgamesh, the King of Heroes'. The Golden King is looking for Hakuno Kishinami (F) his 'Master'... and woe to the one who will cross his way, that they are false gods or whole aliens civilizations.
Crossover - Stargate: SG-1 & Fate/stay night - Rated: T - English - Sci-Fi/Supernatural - Chapters: 5 - Words: 22,804 - Reviews: 37 - Favs: 150 - Follows: 216 - Updated: 2/24 - Published: 10/12/2022 - [Hakuno K., Gilgamesh] J. O'Neill, Ba'al
Ancient Legos by TCGM reviews
This is a Crackfic, meaning the story is not intended to be taken seriously. Ancient Legos is written for laughs and humor. A Self Insert story, Weldon is a teenager living in Brockton Bay on Earth Bet. Somehow without triggering, he starts getting... Ideas. Features Lego Spaceships. T because of light, Worm-style swearing and a comfy chair joke.
Crossover - Stargate: SG-1 & Worm - Rated: T - English - Chapters: 16 - Words: 72,871 - Reviews: 411 - Favs: 1,323 - Follows: 1,504 - Updated: 2/21 - Published: 10/28/2017
Through the gate by Asla reviews
Harry Potter thought he had seen it all: magical creatures, hidden worlds, and dangerous adventures. But nothing prepared him for what he would encounter when he stepped through the Stargate.
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - English - Chapters: 1 - Words: 5,565 - Reviews: 2 - Favs: 44 - Follows: 72 - Published: 2/20
Successor of the Alterans by MissValteria reviews
A Harry Potter who was just struck down by the Dark Lord stumbles into a mysterious encounter via luck that would rival even that of Tyche. Now he seeks to carve a life for himself to live while exploring this vast galaxy. And perhaps, one day return to his old universe. Spiritual successor to Heir of the Alterans.
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - English - Sci-Fi/Fantasy - Chapters: 11 - Words: 15,832 - Reviews: 117 - Favs: 554 - Follows: 866 - Updated: 2/18 - Published: 11/18/2022 - S. Carter, J. O'Neill, Harry P.
A Brutal Truth REWRITE by ReadyAimWait reviews
ADOPTED FROM BIG Z1776: When the Twelve Colonies and Earth are brought together through a technical fluke some may wish the fluke had not occurred at all. Because with two great spacefaring powers not everything can end well for both of them.
Crossover - Stargate: SG-1 & Battlestar Galactica: 2003 - Rated: T - English - Adventure/Sci-Fi - Chapters: 24 - Words: 161,866 - Reviews: 278 - Favs: 293 - Follows: 442 - Updated: 2/16 - Published: 10/6/2021
Harry Potter and the Enforced Holiday by tscchope reviews
Harry is sent on holiday and meets Jack O'Neill. I've switched Bane and Secrets episode order, but had Sam learn of her father's illness. Set after the Battle of Hogwarts and follows the crapilogue, somewhat. Jack and Sam will be getting together. For Jack it's sort of a family tradition, for Sam it's her dad's imminent demise that forces her to think about being a mother.
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - English - Sci-Fi/Family - Chapters: 1 - Words: 6,078 - Reviews: 4 - Favs: 23 - Follows: 58 - Published: 2/14 - S. Carter, J. O'Neill, Harry P., Hermione G.
The Pioneer's Frontier by Left for Space reviews
Not worth reading, need a lot of work. Just an outline.
Crossover - Stargate: SG-1 & Harry Potter - Rated: K+ - English - Sci-Fi - Chapters: 7 - Words: 3,941 - Reviews: 1 - Favs: 4 - Follows: 11 - Published: 2/13
Robotech: The Stargate Saga Information Files by andrewjameswilliams
Background information files on various groups and technologies that appear in my Robotech: The Stargate Saga story.
Crossover - Stargate: SG-1 & Robotech/Macross - Rated: K+ - English - Chapters: 3 - Words: 4,414 - Favs: 15 - Follows: 16 - Updated: 2/13 - Published: 8/30/2022
The Noble Wolf of Earth by Slim A Lou Prime reviews
Noble Six was fighting the inevitable, he knew he would die on Reach. Yet he was not going to make it easy for covenant. Turns out killing him was outside their ground forces abilities. So they sent a cruiser glass him. That ship only managed to trap him before a flying forerunner monitor decided to set him lose on another galaxy. Maybe he wasn't meant to die on Reach.
Crossover - Stargate: SG-1 & Halo - Rated: M - English - Sci-Fi/Adventure - Chapters: 3 - Words: 26,823 - Reviews: 44 - Favs: 180 - Follows: 281 - Updated: 2/11 - Published: 11/28/2022 - SPARTAN-B312/Noble Six
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