Stargate: SG-1 Crossovers
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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: 39 - Words: 201,583 - Reviews: 319 - Favs: 293 - Follows: 322 - Updated: 8/28 - Published: 5/23/2022 - S. Carter, D. Jackson, Rick/Hikaru, Claudia
An Avalanche of Echoes by Mirrored Illusions reviews
An alternate Buffy Summers, who is host to an alternate alternate Egeria, travels to Sunnydale to meet an alternate alternate alternate Buffy Summers. (AFAD 2023)
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: T - English - Sci-Fi - Chapters: 7 - Words: 11,260 - Reviews: 3 - Favs: 11 - Follows: 18 - Updated: 8/28 - Published: 8/2 - Buffy S., Egeria - Complete
The Little Black Stone by Kody Wright 2 reviews
On the eve of disclosure about the Stargate, SG-1 finds an rock shaped artifact that activates and sends them back to 1985 mentally. Sam and Daniel find themselves as teenagers. Jack a young Captain. The Gate is soon stolen and Colonel George Hammond recruits a team of specialist to get it back. AU. Multi-cross over.
Crossover - Stargate: SG-1 & Airwolf - Rated: K+ - English - Chapters: 6 - Words: 13,899 - Reviews: 1 - Favs: 4 - Follows: 8 - Updated: 8/28 - Published: 8/4
Empires Unite! Milky Way by SapphireDawn11709 reviews
When the SGC Destroys the Quantum Mirror after the incident were Doctor Carter and Major Kawasaki appear in Area 51a ripple was sent across the multiverse. When this ripple hit a Forerunner portal chaos ensues as fleets from three universe appear in the Milky Way. Starship Troopers, Mass Effect, Halo Stargate
Crossover - Stargate: SG-1 & Halo - Rated: M - English - Sci-Fi - Chapters: 4 - Words: 16,172 - Reviews: 42 - Favs: 200 - Follows: 239 - Updated: 8/27 - Published: 6/24/2019 - T. Lasky, S. Carter
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: 13 - Words: 61,394 - Reviews: 110 - Favs: 253 - Follows: 329 - Updated: 8/27 - Published: 10/12/2022 - [Hakuno K., Gilgamesh] J. O'Neill, Ba'al
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: 101 - Words: 692,602 - Reviews: 243 - Favs: 170 - Follows: 182 - Updated: 8/26 - Published: 9/25/2021 - [Adora/She-Ra, Catra] S. Carter, J. O'Neill
Harry and the Unexpected by ts-29 reviews
What would happen if SG1 brought someone back on there first Mission after killing Ra
Crossover - Stargate: SG-1 & Harry Potter - Rated: K - English - Romance - Chapters: 10 - Words: 14,850 - Reviews: 98 - Favs: 377 - Follows: 585 - Updated: 8/25 - Published: 5/30 - S. Carter, Harry P., Hermione G.
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: 30 - Words: 242,496 - Reviews: 268 - Favs: 232 - Follows: 245 - Updated: 8/24 - Published: 1/10 - C. Kawalsky, Thor, Harry P.
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: M - English - Adventure/Sci-Fi - Chapters: 53 - Words: 363,113 - Reviews: 1168 - Favs: 2,688 - Follows: 3,680 - Updated: 8/24 - Published: 10/1/2021 - [Harry P., Hermione G.] Luna L., Merlin
Twice the Trouble by Jennifer Schumacher reviews
Jesse Harris-Chase from the Brave au touches a mirror in the Magic Box. It turns out, it's a Quantum Mirror. Now he's in the Protectors au. Add scheming NID agents and Abigail. Pity the idiots who think any child of Xander Harris and Cordelia Chase is an easy mark.
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: T - English - Adventure/Family - Chapters: 8 - Words: 7,643 - Reviews: 6 - Favs: 3 - Follows: 1 - Updated: 8/24 - Published: 8/22 - Xander H., Cordelia C., OC, J. O'Neill - Complete
Requiem VI by bearhug562000
As our heroes close in on the final solution to defeating the Darkness and its dead hordes, they are unaware that their enemies are hot on their respective tails!
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: M - English - Fantasy/Sci-Fi - Chapters: 6 - Words: 10,024 - Favs: 1 - Follows: 2 - Updated: 8/23 - Published: 1/6 - Buffy S., Faith L., J. O'Neill, Teal'c
The 30 stories of John Sheppard by ReKoJ
Chapter 1:John has a dream. *Each one has a different prompt and they can all be read as stand alones.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: M - English - Chapters: 3 - Words: 3,031 - Updated: 8/23 - Published: 8/9
Seeing Double by Sci-FiMedic
A wild tale in which Mac and SG-1 find themselves bouncing around from one alternate universe to the next.
Crossover - Stargate: SG-1 & MacGyver - Rated: K+ - English - Adventure/Sci-Fi - Chapters: 26 - Words: 35,068 - Favs: 3 - Follows: 3 - Updated: 8/23 - Published: 5/7 - S. Carter, J. O'Neill, Jack D., MacGyver - Complete
Crime And Possible Punishments-Stargate SG-1: Need Aftermaths by BazzCatgirl03
While going over Daniel's capture by Pyrus, the truth comes out now, that the situation was arranged by the SGA. As the truth comes out, why Daniel was arrested, as they decide to use Daniel's idea for their benefit. As the NID and SG-1 face being arrested and committed to the French ring, one-shot, for their psychosis's over Daniel. Severe Jack/Sam bashing, SG-1/TNG crossover.
Crossover - Stargate: SG-1 & StarTrek: The Next Generation - Rated: T - English - Angst/Sci-Fi - Chapters: 33 - Words: 354,272 - Favs: 4 - Follows: 3 - Updated: 8/20 - Published: 3/24 - J. Picard, D. Jackson, Gen. Landry, OC
Roads Paved in Shadows by AlbertG reviews
"We don't have information on the numbers yet, sir," one of the commanders answered quickly. "It's not the Cylons. The Thirteenth Tribe is attacking us. We're at war with Earth." Adar was completely stunned that emotion quickly turning into a burning rage. "But why?" he snarled as his rage turned into a need for vengeance.
Crossover - Stargate: SG-1 & Battlestar Galactica: 2003 - Rated: K+ - English - Sci-Fi/Adventure - Chapters: 34 - Words: 170,323 - Reviews: 518 - Favs: 378 - Follows: 431 - Updated: 8/20 - Published: 3/19/2017 - J. O'Neill, W. Adama
Fleet of the Homeword Bound: Battle of Antartica by Sora with an S reviews
With Anubis due to arrive any minute, Stargate Command are not in the mood for anything else going wrong. A bunch of fictional starships showing up as a bunch of shipgirls certainly qualifies.
Crossover - Stargate: SG-1 & TV X-overs - Rated: T - English - Adventure/Sci-Fi - Chapters: 8 - Words: 51,601 - Reviews: 22 - Favs: 69 - Follows: 83 - Updated: 8/18 - Published: 4/8/2022 - Gen. Hammond, Elizabeth Weir
My New Boss by ElohimEditor reviews
After being arrested for helping Dark Kat, Hard Drive is sent to Alkatraz, where an unexpected ally helps him escape and offers him a deal he could hardly refuse, and would change his life and his perception of the world forever.
Crossover - Stargate: SG-1 & SWAT Kats - Rated: T - English - Sci-Fi - Chapters: 9 - Words: 60,234 - Reviews: 1 - Favs: 2 - Follows: 5 - Updated: 8/17 - Published: 10/16/2021
The Protectors, Space Vampires and Even More False Gods by Jennifer Schumacher reviews
The Protectors deal with Wraith (Space Vampires) and the Ori.
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: M - English - Adventure/Drama - Chapters: 11 - Words: 11,189 - Reviews: 16 - Favs: 8 - Follows: 7 - Updated: 8/16 - Published: 8/14 - Xander H., Cordelia C., Willow R. - Complete
Destiny's Child Version 4 by andrewjameswilliams reviews
After an encounter with hostile Klingons and a spatial anomaly the Federation starship Resolution is transported into the Stargate universe. Trouble ensues as they have to learn how to survive in this new reality, build new friendships and alliances and maybe, just maybe, find a way home.
Crossover - StarTrek: Other & Stargate: SG-1 - Rated: T - English - Adventure/Sci-Fi - Chapters: 3 - Words: 17,047 - Reviews: 28 - Favs: 111 - Follows: 154 - Updated: 8/15 - Published: 9/18/2022 - S. Carter, D. Jackson, J. O'Neill, Teal'c
SG 1, The Protectors and An Adventure In Sunnydale by Jennifer Schumacher reviews
A Gou'ld ship crash lands outside Sunnydale. SG 1 is sent to investigate, the Protectors help. In the process, SG 1 finds out more of the Protectors secrets.
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: M - English - Adventure/Mystery - Chapters: 5 - Words: 4,275 - Reviews: 4 - Favs: 4 - Follows: 5 - Published: 8/13 - Xander H., S. Carter - Complete
The Protectors Meet SG1 by Jennifer Schumacher reviews
The Protectors spend some time with SG1. The Gou'ld should be very, very afraid.
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: M - English - Adventure/Mystery - Chapters: 20 - Words: 19,338 - Reviews: 22 - Favs: 12 - Follows: 14 - Updated: 8/12 - Published: 8/6 - Complete
Slayer Scrolls by Ellmarr reviews
Can two children who are just learning to survive save the worlds or do the Fates have other plans for them- 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.
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: M - English - Adventure/Sci-Fi - Chapters: 28 - Words: 207,395 - Reviews: 4 - Favs: 19 - Follows: 23 - Updated: 8/9 - Published: 1/27 - Faith L.
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: 25 - Words: 149,263 - Reviews: 251 - Favs: 232 - Follows: 233 - Updated: 8/6 - Published: 7/14/2011 - OC
Harry Potter and the Magical Tok'ra by Tok'ra-Agent-632 reviews
Summary: Harry Potter narrowly manages to escape his wicked uncle by magically teleporting himself to another world. Harry becomes host to a Tok'ra symbiote named Einar.
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - English - Adventure/Friendship - Chapters: 6 - Words: 21,220 - Reviews: 431 - Favs: 1,627 - Follows: 2,441 - Updated: 8/4 - Published: 11/10/2016 - S. Carter, Harry P., Hermione G., N. Tonks
Through the Gates of Babylon by Lord-Malaki2036 reviews
An Earth Alliance expedition stumbles upon a discovery that will change the history and the future of them and other races for the foreseeable future.
Crossover - Babylon 5 & Stargate: SG-1 - Rated: K+ - English - Sci-Fi/Adventure - Chapters: 11 - Words: 90,606 - Reviews: 34 - Favs: 84 - Follows: 108 - Updated: 8/2 - Published: 10/10/2022
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