Stargate: SG-1 Crossovers
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Stargate Centurion by SingleDarkShade reviews
When Rory demands to leave the TARDIS he did not expect to be dropped off in a top secret American military base. As he learns where he is, the SGC try to work out who Rory is and where he came from.
Crossover - Doctor Who & Stargate: SG-1 - Rated: K+ - English - Sci-Fi/Friendship - Chapters: 1 - Words: 5,442 - Reviews: 3 - Favs: 10 - Follows: 11 - Published: 5/27 - Rory W., Gen. Hammond, D. Jackson, J. O'Neill - Complete
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: 32 - Words: 95,274 - Reviews: 16 - Favs: 29 - Follows: 46 - Updated: 5/24 - Published: 6/1/2021 - S. Carter
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: 18 - Words: 184,185 - Reviews: 2 - Favs: 3 - Follows: 2 - Updated: 5/23 - Published: 2/3 - J. Picard, D. Jackson, Teal'c, Gen. Landry
Interstellar Destiny by Ana's Writings
Book 3 in the "Interstellar" series. Lara and Evan finally have their happy ending. Or do they? When a mission goes sideways, Lara is left to believe that her life has been turned upside down. Having to face new challenges, while leaving the one place she has called home for the last few years, Lara has to find a new kind of strength if she is to ever be happy again.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: M - English - Romance/Angst - Chapters: 48 - Words: 27,166 - Published: 5/21 - [E. Lorne, OC] [J. O'Neill, S. Carter] - Complete
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. No pairings! Slow Updates!
Crossover - Stargate: SG-1 & Halo - Rated: M - English - Adventure/Sci-Fi - Chapters: 5 - Words: 27,662 - Reviews: 54 - Favs: 231 - Follows: 321 - Updated: 5/19 - Published: 11/23/2019 - S. Carter, D. Jackson, J. O'Neill, Teal'c
Spiral Gate by GeneralAllenWalker reviews
It was supposed to have been a Mission like any other. Walk through the gate, make contact with the locals, see if they could find any technology or allies useful in the war against the Goauld. Instead Sg-1 finds itself in a village under attack by gigantic mechs, and are forced into a fight much greater than even the one they had sought aid for.
Crossover - Stargate: SG-1 & Gurren Lagann - Rated: T - English - Adventure/Sci-Fi - Chapters: 1 - Words: 2,045 - Reviews: 1 - Favs: 2 - Follows: 4 - Published: 5/18 - S. Carter, J. O'Neill, Simon, Kamina
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: 8 - Words: 11,490 - Reviews: 2 - Favs: 12 - Follows: 12 - Updated: 5/12 - Published: 12/25/2023 - Complete
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: 54 - Words: 336,875 - Reviews: 2565 - Favs: 3,271 - Follows: 4,105 - Updated: 5/11 - Published: 12/11/2021 - Gen. Hammond, Harry P., Hermione G., Lee J.
Symbiosis by Meushell reviews
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: 14 - Words: 17,638 - Reviews: 8 - Favs: 31 - Follows: 42 - Updated: 5/10 - Published: 2/9/2023 - [S. Carter, Martouf/Lantash] Jadzia D., B. Sisko
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: 9 - Words: 14,946 - Updated: 5/8 - Published: 2/26
The Zerg Across the Stargate by Fallenknight88 reviews
40 years before the fall of Ra there was an enemy that even the Goa'uld feared, an Enemy that only know one thing, EVOLVE! this is a Response to CrazedGammaMan1721's challenge. Self Insert; Possible Goa'uld Bashing (Hiatus)
Crossover - Stargate: SG-1 & StarCraft - Rated: M - English - Sci-Fi - Chapters: 6 - Words: 15,030 - Reviews: 2 - Favs: 25 - Follows: 33 - Published: 5/7 - J. O'Neill, Ra, Zerg, OC
New SG1 Member by Phantom Dragon Witch reviews
Danny Fenton Joined the air force with hopes of one day going to space. When he was reassigned to the SGC, he had no clue how close he was to getting his wish, even with all the weirdness that followed him from home.
Crossover - Danny Phantom & Stargate: SG-1 - Rated: T - English - Sci-Fi - Chapters: 7 - Words: 9,155 - Reviews: 19 - Favs: 43 - Follows: 72 - Updated: 5/6 - Published: 10/28/2023 - D. Jackson, Danny F., J. O'Neill, Sam M.
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: 16 - Favs: 18 - Follows: 32 - Updated: 5/1 - Published: 12/15/2023 - S. Carter, J. O'Neill
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: 3048 - Favs: 3,329 - Follows: 2,929 - Updated: 4/28 - Published: 6/18/2010 - S. Carter, Harry P.
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: 8 - Favs: 7 - Follows: 12 - Updated: 4/21 - Published: 2/2
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: 4 - Updated: 4/20 - Published: 3/19
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: 140 - Favs: 821 - Follows: 942 - 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: 78 - Favs: 160 - Follows: 211 - 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: 12 - Favs: 79 - Follows: 111 - Updated: 4/14 - Published: 6/8/2019 - S. Carter, D. Jackson, Teal'c, Arbiter
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: 327 - Favs: 621 - Follows: 764 - Updated: 4/11 - Published: 10/12/2014
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: 30 - Favs: 120 - Follows: 150 - Updated: 4/9 - Published: 12/16/2021
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: 3 - 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: 363 - Follows: 388 - Updated: 3/31 - Published: 5/23/2022 - S. Carter, D. Jackson, Rick/Hikaru, Claudia - Complete
Wormholes and Meteor Showers by Shall-Iin reviews
The SG team finds evidence of a lost race that the Goauld are unable to infest and who legend say are imbued with vast physical powers beyond those all other races. They seek information about the lost race on Earth, where there is evidence they might hav
Crossover - Stargate: SG-1 & Smallville - Rated: T - English - Adventure/Sci-Fi - Chapters: 33 - Words: 128,880 - Reviews: 323 - Favs: 307 - Follows: 425 - Updated: 3/29 - Published: 1/14/2006 - D. Jackson, J. O'Neill, Clark K./Superman, Pete R.
In Fire Forged (StargateHalonBSG fusion) by Illuviar reviews
The Supreme System Lord Ra has been missing for a year, the System Lords are straining their bonds, at a perilous time. The alien Covenant has proclaimed the Goa'uld and their servants, as False Gods and Heretics to be exterminated. Meanwhile, the beleagued UNSC struggles for survival, while the 12 Colonies of Kobol are none the wiser about the dangers lurking in the dark...
Crossover - Stargate: SG-1 & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 7 - Words: 21,482 - Reviews: 24 - Favs: 117 - Follows: 143 - Updated: 3/26 - Published: 10/23/2020
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