Stargate: SG-1 Crossovers
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Stargate Atlantis Trading Grounds I: The Return To La Rochelle by BazzCatgirl03 reviews
After surviving a fatal assault at his apartment, Daniel Jackson is transferred to the SGA, under the military command. And of General Hank Landry, deciding this is the chance to start his life over. As he and Teal'C, after the cruel and cold blooded betrayal the year before. Of their team, they leave the SGC and start a new life. Alternate Forever In A Day main character bashing.
Crossover - Stargate: SG-1 & StarTrek: The Next Generation - Rated: T - English - Sci-Fi/Angst - Chapters: 96 - Words: 1,003,428 - Reviews: 3 - Favs: 8 - Follows: 7 - Updated: 7h - Published: 1/23 - J. Picard, D. Jackson, Teal'c, Gen. Landry
HALO: All the Stars in the Sky: Information Files by Spartan-076A reviews
Information Files for my Halo/Stargate fanfiction I have in development. Rated M for intense scenes of combat and violence portrayed in the main story.
Crossover - Stargate: SG-1 & Halo - Rated: M - English - Sci-Fi - Chapters: 5 - Words: 1,529 - Reviews: 5 - Favs: 8 - Follows: 10 - Updated: 5/1 - Published: 3/23
Terra s Destiny: A prelude to War by GeneralAllenWalker reviews
Jack O'Neill thought he had done enough to earn a retirement. Fighting the russians in east germany, killing an alien god in a distant star system thousands of light years away, being a productive member of the Colorado Springs golf club, all very laudable things, if he allowed himself the compliment. Sadly, it seems, the universe had other ideas as Earth faces an Enemy Unknown
Crossover - Stargate: SG-1 & X-Com - Rated: T - English - Sci-Fi/Adventure - Chapters: 5 - Words: 14,978 - Reviews: 14 - Favs: 15 - Follows: 28 - Updated: 5/1 - Published: 12/15/2023 - S. Carter, J. O'Neill
Robotech: The Stargate Saga Version 21 by andrewjameswilliams reviews
Rewrite of Robotech: The Stargate Saga. As robotechnology changed humanities destiny a chance discovery beneath the Giza Plateau reveals an Ancient legacy and a deadly ancient threat.
Crossover - Stargate: SG-1 & Robotech/Macross - Rated: T - English - Chapters: 4 - Words: 23,158 - Reviews: 9 - Favs: 46 - Follows: 52 - Updated: 4/30 - Published: 4/25 - S. Carter, D. Jackson, Rick/Hikaru
Mini Gate by Kody Wright 2 reviews
Multi crossovers. SG-1 is slung back to 1984 after the hiccup with the stargate. They discover a much smaller gate hidden in cave in the Mojave desert as a result and an unknown alien influence.
Crossover - Stargate: SG-1 & Airwolf - Rated: K+ - English - Adventure/Sci-Fi - Chapters: 7 - Words: 12,972 - Reviews: 7 - Favs: 4 - Follows: 6 - Updated: 4/29 - Published: 4/16
Beginning a New Path by stargatesg1fan1 reviews
Massive multiverse crossover between Harry Potter/Buffy/Stargate/Star Trek Enterprise/X-Men/Fantastic Four/Iron Man/Highlander/Justice League/Underworld/Star Wars and More in that order. Harry Potter is the main character. Full summary inside. Non-Traditional-Harem, Builds up to Awesome Power Harry. 1 Million Words. 150 Smut Scenes (Very Sensual Story).
Crossover - Stargate: SG-1 & Harry Potter - Rated: M - English - Sci-Fi/Adventure - Chapters: 117 - Words: 1,119,632 - Reviews: 3044 - Favs: 3,280 - Follows: 2,870 - Updated: 4/28 - Published: 6/18/2010 - S. Carter, 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: 136 - Words: 929,814 - Reviews: 349 - Favs: 187 - Follows: 204 - Updated: 4/27 - Published: 9/25/2021 - [Adora/She-Ra, Catra] S. Carter, J. O'Neill
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: 49 - Words: 241,191 - Reviews: 755 - Favs: 445 - Follows: 519 - Updated: 4/23 - Published: 3/19/2017 - J. O'Neill, W. Adama
Stargate: The Last Ship by Red Leader reviews
Stargate/DS9/TNG/Voyager/The Last Ship crossover. Ba'al ascended to a higher plane of existence after escaping capture, he descended into a universe and took control of the Dominion to take back what he lost.
Crossover - Stargate: SG-1 & StarTrek: Deep Space Nine - Rated: K - English - Sci-Fi - Chapters: 10 - Words: 26,478 - Reviews: 7 - Favs: 5 - Follows: 9 - Updated: 4/21 - Published: 2/2
Sisters, the adventures of Samantha and Buffy Carter by FPBarbieri reviews
Samantha Carter, prodigy. Buffy Carter Summers, loving little sister. The story of their lives, together and apart.
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: T - English - Drama/Family - Chapters: 31 - Words: 90,423 - Reviews: 15 - Favs: 27 - Follows: 45 - Updated: 4/21 - Published: 6/1/2021 - S. Carter
The secret of Antartica by everythingilike777 reviews
Luna Sheppard (24) one of the most succesful and youngest military commanders on the face of earth, daughter of Elizabeth Weir and John Sheppard is about to uncover something that would change the life of atlantis and a group of teenagers forever and here is how it started ... with some original characters from the show but some are mine. First FF
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Sci-Fi/Romance - Chapters: 12 - Words: 14,057 - Reviews: 2 - Favs: 4 - Follows: 2 - Updated: 4/20 - Published: 3/19
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: 23 - Words: 112,119 - Reviews: 172 - Favs: 324 - Follows: 408 - Updated: 4/20 - Published: 10/12/2022 - [Hakuno K., Gilgamesh] J. O'Neill, Ba'al
Les histoires infinies by amandinetrot
Ce sont des petits OS et des textes que j'ai faits pour un atelier d'écriture, que j'ai écrite seul ou avec d'autres personnes.
Crossover - Stargate: SG-1 & Vampire Diaries - Rated: M - French - Chapters: 7 - Words: 11,877 - Updated: 4/17 - Published: 2/26
Waking into a Dream by stargatesg1fan1 reviews
An SI story where our main character wakes up as a young Harry Potter. Watch as our SI finds himself in a universe slightly different from canon Harry Potter and makes the changes he wants to make. Later also realizing Stargate exists in this universe he makes even more changes. Eventual-Powerful-Harry. Gary Stu. Lots of Smuttiness. Multi-Pairing. Pairing: HG/HP/Sam Carter
Crossover - Stargate: SG-1 & Harry Potter - Rated: M - English - Adventure/Romance - Chapters: 7 - Words: 58,145 - Reviews: 135 - Favs: 753 - Follows: 898 - Updated: 4/17 - Published: 1/7 - S. Carter, Harry P., Hermione G. - Complete
In Fire Forged (StargateHalonBSG fusion) V2 by Illuviar reviews
The Goa'uld System Lords led by Ra fight for survival and domination against the Covenant. The Prophets in their lust for power have proclaimed Humanity's extermination, and decreed the destruction of the False Gods. Long dormant and forgotten Stargates come to life to bring UEG's Earth and the Colonies of Cobol into a bloody contact with the galaxy at large...
Crossover - Stargate: SG-1 & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 19 - Words: 68,079 - Reviews: 72 - Favs: 136 - Follows: 189 - Updated: 4/15 - Published: 3/26 - J. O'Neill, Master Chief/John-117
The Fifth-Race Reclaimers: Upheaval by Piero217 reviews
Over the course of eight months following their triumph over the Precursor threat, the Fifth-Race Reclaimers have been working hard to learn more about each other and their respective galaxies—sometimes without the other side even knowing. But with a new threat looming on the horizon, will they be prepared to defend every living creature they have been entrusted with?
Crossover - Stargate: SG-1 & Halo - Rated: T - English - Sci-Fi/Drama - Chapters: 3 - Words: 8,405 - Reviews: 11 - Favs: 74 - Follows: 105 - Updated: 4/14 - Published: 6/8/2019 - S. Carter, D. Jackson, Teal'c, Arbiter
The Defensive Space Force Ship Requirement by tkepner reviews
Harry Potter, and the rest of Dumbledore's Army in his fifth year, use the Room of Requirement to get themselves a spaceship! The problems of a tiny island on Earth don't seem so important, anymore. Wizards in Space! What could possibly go wrong with that? Eventually, this will be a crossover with Stargate SG-1.
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - English - Fantasy/Sci-Fi - Chapters: 53 - Words: 330,395 - Reviews: 2494 - Favs: 3,125 - Follows: 3,909 - Updated: 4/14 - Published: 12/11/2021 - Gen. Hammond, Harry P., Hermione G., Lee J.
Rebirth of the UNSC by ultimate Deathsaurer 2 reviews
Reach has Fallen and the Pillar of Autumn has set a course to earth but not the earth they remember. Adopted from Original Owner: Samsara Sage
Crossover - Stargate: SG-1 & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 18 - Words: 66,336 - Reviews: 325 - Favs: 608 - Follows: 747 - Updated: 4/11 - Published: 10/12/2014
Magic by Kody Wright 2 reviews
Crossover with Harry Potter. OC, AU. Sam's old friend from her childhood comes to the SGC with a secret. Professor Snape is trapped off world protecting kids from Morgan Le Fey. Jack finds out he can do magic.
Crossover - Stargate: SG-1 & Harry Potter - Rated: K - English - Chapters: 5 - Words: 11,563 - Reviews: 10 - Favs: 24 - Follows: 33 - Updated: 4/10 - Published: 2/7
Nephalem Outlaws by MetalSaiyan88 reviews
I died and was Reborn in Narutoverse only things didn't make sense, Minato is alive, Naruto has twin sisters wait he doesn't have Chakra, and is that a Stargate, what the hell is going on here... will have crossover with Mass effect, Star wars and Diablo... also Naruto pairing with Liara T'soni, Talizorah and Ashoka Tano.
Crossover - Stargate: SG-1 & Naruto - Rated: T - English - Adventure/Drama - Chapters: 20 - Words: 67,979 - Reviews: 29 - Favs: 115 - Follows: 145 - Updated: 4/9 - Published: 12/16/2021
How Dr Lee found the Furlings by LittleMiddleA reviews
Who would of thought that the magazine Aliens Among Us! would ever be useful?
Crossover - Animorphs & Stargate: SG-1 - Rated: T - English - Humor/Adventure - Chapters: 7 - Words: 10,571 - Reviews: 2 - Favs: 10 - Follows: 12 - Updated: 4/5 - Published: 12/25/2023
Stargate Atlantis Trading Grounds II: The Glory Of Tantulus II by BazzCatgirl03 reviews
After finding the device necessary to prevent the Ori from attack gaining knowledge of the Milky Way Galaxy. Lieutenant Colonel Daniel Jackson sets out on a mission, meant to protect Earth. And from attack by the System Lords, by forging a stronger treaty. And with the Greek Titan Cronus and the Emperor Lord Yu, but there is still a threat. Taking form in the shape of his ex team.
Crossover - Stargate: SG-1 & StarTrek: The Next Generation - Rated: T - English - Sci-Fi/Family - Chapters: 6 - Words: 60,834 - Reviews: 1 - Favs: 2 - Follows: 2 - Updated: 4/3 - Published: 2/3 - J. Picard, D. Jackson, Teal'c, Gen. Landry
An Unstoppable force Meets an Immovable Object by RusticItalian reviews
Ethan remembers better times, and it gets interesting, A little nostalgia can be a good thing, a lot of nostalgia might just save the planet. Halloween Inspired Cross-Over between Buffy-verse and Stargate Sg1
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: M - English - Sci-Fi/Adventure - Chapters: 5 - Words: 6,462 - Reviews: 8 - Favs: 60 - Follows: 90 - Updated: 3/31 - Published: 1/15 - Xander H., S. Carter, D. Jackson, J. O'Neill
Hogan's Heroes' Heroes by TannaraMoonvale
Colonel Hogan gets sent to Stalag 13 but how does his operation become so big so quickly?
Crossover - Stargate: SG-1 & Hogan's Heroes - Rated: K - English - Adventure/Friendship - Chapters: 1 - Words: 4,258 - Favs: 2 - Follows: 2 - Published: 3/31 - S. Carter, J. O'Neill, R. Hogan, P. Newkirk - 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. *Discontinued due to pacing issues, rewrite in progress*
Crossover - Stargate: SG-1 & Robotech/Macross - Rated: T - English - Sci-Fi/Adventure - Chapters: 57 - Words: 292,233 - Reviews: 463 - Favs: 365 - Follows: 392 - Updated: 3/31 - Published: 5/23/2022 - S. Carter, D. Jackson, Rick/Hikaru, Claudia - Complete
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