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: 4 - Words: 4,462 - Favs: 5 - Follows: 10 - Updated: 11h - Published: 2/9 - [S. Carter, Martouf/Lantash] Jadzia D., B. Sisko
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: 25 - Words: 135,016 - Reviews: 203 - Favs: 232 - Follows: 261 - Updated: 17h - Published: 5/23/2022 - S. Carter, D. Jackson, Rick/Hikaru, Claudia
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: 115 - Favs: 527 - Follows: 815 - Updated: 2/18 - Published: 11/18/2022 - S. Carter, J. O'Neill, Harry P.
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: 14 - Words: 46,390 - Reviews: 14 - Favs: 5 - Follows: 6 - Updated: 2/18 - Published: 1/27 - C. Mitchell, John S.
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: 74 - Words: 508,352 - Reviews: 170 - Favs: 150 - Follows: 162 - Updated: 2/18 - Published: 9/25/2021 - [Adora/She-Ra, Catra] S. Carter, J. O'Neill
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: 48 - Words: 377,067 - Reviews: 105 - Favs: 104 - Follows: 128 - Updated: 2/17 - Published: 10/14/2022 - S. Carter, Ranma
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: 11 - Words: 30,781 - Reviews: 73 - Favs: 121 - Follows: 190 - Updated: 2/17 - Published: 12/22/2022 - S. Carter, J. O'Neill, Master Chief/John-117, J. Keyes
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: 275 - Favs: 287 - Follows: 435 - Updated: 2/16 - Published: 10/6/2021
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: 35 - Words: 228,209 - Reviews: 796 - Favs: 2,317 - Follows: 3,224 - Updated: 2/16 - Published: 10/1/2021 - [Harry P., Hermione G.] Luna L., Merlin
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: 3 - Favs: 20 - Follows: 44 - 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: 10 - 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
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: 13 - Words: 106,097 - Favs: 2 - Follows: 6 - Updated: 2/12 - Published: 1/27 - Faith L., Gen. Hammond, J. O'Neill
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: 170 - Follows: 258 - Updated: 2/11 - Published: 11/28/2022 - SPARTAN-B312/Noble Six
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: 3 - Words: 21,367 - Reviews: 21 - Favs: 71 - Follows: 89 - Updated: 2/9 - Published: 1/10 - C. Kawalsky, Thor, Harry P.
Egeria's Freedom by Voltaire's Writer
What if Egeria was rescued before she was discovered by the Pangarians? What if Egeria saves Jamie's life? Find out the answers to these questions and more in the story. Disclaimer: I do not own Stargate SG-1 or A Walk to Remember
Crossover - Stargate: SG-1 & A Walk to Remember - Rated: T - English - Romance/Adventure - Chapters: 1 - Words: 2,232 - Published: 2/7 - Complete
A Lifetime Together by RenaJo reviews
After the events of Three Months to Remember, Samantha Potter returns to America with Harry in tow to begin a life together. summary edited because reasons
Crossover - Stargate: SG-1 & Harry Potter - Rated: M - English - Romance/Adventure - Chapters: 4 - Words: 13,813 - Reviews: 35 - Favs: 158 - Follows: 248 - Updated: 2/6 - Published: 6/18/2022 - S. Carter, Harry P.
HMS Starfleet by Evil-Monkey-rides-again reviews
The Eagle of the Tau'ri had always been handed a lucky break, but this time. The Lion has found a lucky break as well. Will the Lion bite off more than it can chew? Or will they build their forces and wait until the Americans open the Stargate?
Crossover - Stargate: SG-1 & Battlestar Galactica: 2003 - Rated: T - English - Chapters: 7 - Words: 16,483 - Reviews: 27 - Favs: 40 - Follows: 52 - Updated: 2/6 - Published: 1/5
Traveller Inbound by ProcrastinationStrikes reviews
The SG-1 Chulak mission happened during a week in February 1997. The Orders to change all astronautical observation devices did not occur as quickly thanks to bureaucracies and a few too-invested researchers. All devices did not reorient to search for eventual aggressive Goa'uld activity until Late March 1997. Making it so that Earth did not miss an unexpected visitor. Absolute AU.
Crossover - X-overs & Stargate: SG-1 - Rated: T - English - Sci-Fi/Drama - Chapters: 1 - Words: 2,548 - Reviews: 2 - Favs: 5 - Follows: 11 - Published: 2/4
MoonGate by Antonio Cabanas
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: 1 - Words: 3,271 - Favs: 4 - Follows: 7 - Published: 2/3 - Haruka T./Sailor Uranus, Rei H./Raye/Sailor Mars, S. Carter, J. O'Neill
Ship of the Line: Far Traveler by Worldmaker reviews
My response to Zaion's Ship of the Line challenge on Twisting the Hellmouth. The Scoobies wake up after Halloween to find themselves in orbit, at the controls of a powerful warship from a thousand years in the future. How will their new circumstances affect a 21st Century Earth that is already embroiled in a secret interstellar war? Rated M for mature language and situations.
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: M - English - Chapters: 5 - Words: 48,824 - Reviews: 144 - Favs: 539 - Follows: 736 - Updated: 2/2 - Published: 6/28/2020 - Xander H.
Star Granger - Season 5 by SFD reviews
Once upon a time, a race of people fled their home planet, not willing to present themselves as gods. They went on and seeded life in substantial parts of the known universe. Klingons will tell you that gods are more trouble than they are worth, and that to grow, a race needs to do all their gods in. But, doing-whoever-all-in is SO not Federation. What a girl to do?
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - English - Sci-Fi/Adventure - Chapters: 23 - Words: 102,499 - Reviews: 140 - Favs: 323 - Follows: 488 - Updated: 2/2 - Published: 6/16/2022 - [Harry P., Hermione G.] S. Carter, J. O'Neill - Complete
Samantha Carter - Slave of Jabba by Failhammer reviews
After an SG-1 mission went wrong, Sam became Jabba's newest slave. Stranded in the palace, with no idea when or if rescue will arrive, Sam must survive her new circumstances as best she can.
Crossover - Star Wars & Stargate: SG-1 - Rated: T - English - Drama - Chapters: 3 - Words: 9,244 - Reviews: 9 - Favs: 13 - Follows: 16 - Updated: 2/1 - Published: 10/11/2022 - Jabba the Hutt, Oola, S. Carter
A New Crossroad by detonik reviews
A Stargate / Overlord crossover set at the end of Stargate Atlantis and the end of the Overlord Saga. After investigating in dephts the ancients knowledge and discoveries, Daniel Jackson finds out that Janus experimented with other realities where magic seems to be a thing. With the Ori threat contained and the Pegasus expedition over, it's a good time to resume exploration.
Crossover - Stargate: SG-1 & Overlord/オーバーロード - Rated: T - English - Sci-Fi/Fantasy - Chapters: 10 - Words: 35,059 - Reviews: 105 - Favs: 125 - Follows: 155 - Updated: 1/29 - Published: 3/17/2022
Gundam Seed: A New Path by readerofgoodfanfiction reviews
The Second Bloody Valentine's War has ended. In the midst of it all, the Atlantic Federation forms a top secret military division called Stargate Command located deep within the heart of Cheyenne Mountain, Colorado. The discovered Ancient relic, the Stargate, help raise back a nation from the ashes of its defeat like a phoenix and shows the galaxy what it truly means to be Tau'ri.
Crossover - Stargate: SG-1 & Gundam Seed - Rated: K+ - English - Sci-Fi/Adventure - Chapters: 24 - Words: 139,877 - Reviews: 247 - Favs: 224 - Follows: 227 - Updated: 1/27 - Published: 7/14/2011 - OC
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