Stargate: SG-1 Crossovers
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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 - Stargate: SG-1 & Harry Potter - Rated: T - English - Adventure/Drama - Chapters: 4 - Words: 20,913 - Reviews: 36 - Favs: 150 - Follows: 244 - Updated: 6/14 - Published: 11/11/2020
Place of Our Legacy by firstprime1230 reviews
Earth has been overrun by the forces of the Ori. Beaten, demoralized and on the run in the Ancient city of Atlantis the survivors of Earth make a desperate gamble to save what little they have left. Arriving in a galaxy so different from their own, can they to uphold the legacy left to them by the races that came before? And save a galaxy doomed to a suffer a fate worse than death.
Crossover - Stargate: SG-1 & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 8 - Words: 84,240 - Reviews: 277 - Favs: 780 - Follows: 1,114 - Updated: 6/9 - Published: 4/30/2020
New World in the Morning by Tanista2
After the Memorial Jack and Sam reach out to one another, and discover themselves anew. (Ad Astra 'verse)
Crossover - Stargate: SG-1 & MacGyver - Rated: T - English - Romance - Chapters: 1 - Words: 6,697 - Favs: 2 - Follows: 3 - Published: 6/9 - S. Carter, J. O'Neill, MacGyver, OC - Complete
Wrath of Steel by heavyneos reviews
Set between the episodes Within the Serpents Grasp and Serpents lair the Season 1 finale and the Season 2 premiere of SG1. A hyperspace malfunction sends a CIS fleet and its escort to another universe its commander a human from the earth that fell into the life of a Naboo noble family who thought he could change the outcome of the Clone Wars finds himself once again on an adventure
Crossover - Star Wars & Stargate: SG-1 - Rated: T - English - Sci-Fi/Adventure - Chapters: 3 - Words: 9,772 - Reviews: 43 - Favs: 165 - Follows: 244 - Updated: 5/31 - Published: 3/3 - OC, S. Carter, J. O'Neill, Teal'c
The DASS Requirement by feauxen reviews
The Dumbledore's Army Space Ship Requirement sails again! This time with goa'uld, SG-1, and consequences that probably aren't a joke. (Consequences not included, may contain products harmful to the mental development of children under seven years of age.) This story was inspired by another work on this site, see author's notes for details.
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - English - Sci-Fi/Adventure - Chapters: 2 - Words: 4,445 - Reviews: 11 - Favs: 91 - Follows: 107 - Updated: 5/25 - Published: 5/13 - Gen. Hammond, J. O'Neill, Harry P. - Complete
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: 9 - Words: 29,933 - Reviews: 95 - Favs: 106 - Follows: 131 - Updated: 5/22 - Published: 3/17
Stargate Salvation by Uni40 reviews
Stargate Salvation is a Time Travel fix it in Stargate, this is on a massive scale. The Aschen have destroyed Earth now the last Tau’ri takes revenge. I have place SGU on an accelerated timeline so that SGU season 1 and SGA season 5 take place simultaneously. This includes All of the Stargate Tv and movies except for Origins.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: K - English - Sci-Fi - Chapters: 2 - Words: 4,668 - Reviews: 4 - Favs: 22 - Follows: 35 - Updated: 5/22 - Published: 5/21 - J. O'Neill, Thor, Elizabeth W., Teyla E.
Stargate:Spartan Siege by Johnnieboy11 reviews
After the battle on Mantle's Approach, the Chief finds himself, alongside a non-rampant Cortana, helping the Humans of a galaxy similar, yet different to his own, battle their enemies, while exploring the countless worlds tied together by a network of ancient portals and uncovering the mysteries surrounding these worlds.
Crossover - Stargate: SG-1 & Halo - Rated: T - English - Adventure/Sci-Fi - Chapters: 5 - Words: 17,904 - Reviews: 69 - Favs: 357 - Follows: 537 - Updated: 5/17 - Published: 12/24/2020 - D. Jackson, J. O'Neill, Teal'c, Master Chief/John-117
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: 23 - Words: 132,522 - Reviews: 239 - Favs: 218 - Follows: 220 - Updated: 5/15 - Published: 7/14/2011 - OC
Stargate meets Galactica by SGBill7 reviews
This is a slightly AU Battlestar Galactica, no razor or lay down your burdens, and a post disclosure Stargate Sg1.
Crossover - Stargate: SG-1 & Battlestar Galactica: 2003 - Rated: T - English - Sci-Fi - Chapters: 4 - Words: 5,611 - Reviews: 61 - Favs: 91 - Follows: 175 - Updated: 5/15 - Published: 3/23
The Battle for Catachan Secundus by Kamakasie reviews
What wars may come from zealots and false gods fighting among the foliage.
Crossover - Stargate: SG-1 & Warhammer - Rated: M - English - Sci-Fi - Chapters: 3 - Words: 3,187 - Reviews: 3 - Favs: 9 - Follows: 14 - Updated: 5/12 - Published: 4/1/2020
Patronus or Boggart by JNTK984 reviews
A Cosmic Convention is being held, and one booth has the option for visitors to find out their Patronus or to see what their Boggart is.
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - English - Humor/Fantasy - Chapters: 1 - Words: 1,200 - Reviews: 3 - Favs: 10 - Follows: 8 - Published: 5/7 - S. Carter, J. O'Neill, Harry P., Hermione G.
The Alus effect Book one by Robotech1984 reviews
This is a re-write of my original story The Archangel Effect Book one Stargates & Veritechs V1. Please enjoy and if you would like to see what the Alus looks like please copy the link in the first chapter to visit my Deviant Art page.
Crossover - Stargate: SG-1 & Anime X-overs - Rated: K - English - Sci-Fi/Fantasy - Chapters: 6 - Words: 15,046 - Reviews: 8 - Favs: 23 - Follows: 35 - Updated: 5/5 - Published: 9/2/2020
This Isn't Kansas 2: Homefront by andrewjameswilliams reviews
After two and a half years in another reality the Odyssey has returned home to find a galaxy in chaos and facing a greater threat than ever before.
Crossover - Stargate: SG-1 & Robotech/Macross - Rated: K+ - English - Adventure/Sci-Fi - Chapters: 2 - Words: 9,741 - Reviews: 36 - Favs: 118 - Follows: 158 - Updated: 5/1 - Published: 1/2 - Braítac, S. Carter, Gen. Landry, L. Ferretti
Two Gates one to the Galaxy another to a different world by Director Kun reviews
A year before the Gate in Tokyo opened SG 1 explored the world of Special Region also known as P4X-942 in the Caesura Constellation that is outside the control of the Goa'uld. Little did they know they will return back to the world in a year due to an event that rocked Earth's nations.
Crossover - Stargate: SG-1 & Gate - Jietai Kare no Chi nite, Kaku Tatakeri - Rated: T - English - Adventure - Chapters: 2 - Words: 3,253 - Reviews: 16 - Favs: 39 - Follows: 59 - Published: 5/1
Plus One by Tanista2 reviews
There's no such thing as a normal mission for SG-1. Not even on the rare occasions when they are a team of five instead of four. Or, an ongoing chronicle of the things that happen offworld when a certain linguist accompanies the team as Daniel's assistant. (Ad Astra 'verse)
Crossover - Stargate: SG-1 & MacGyver - Rated: T - English - Drama/Romance - Chapters: 4 - Words: 12,332 - Reviews: 1 - Favs: 1 - Follows: 1 - Updated: 4/30 - Published: 5/11/2020 - S. Carter, D. Jackson, J. O'Neill, OC
Stargate: A Paragon's Dream by Reaper Eye Fuck ONI reviews
"Did we time travel? Did we crossover into another universe? I have no fu*king Idea all I know is that the Goa'uld needed to die and sides think of all of the Loot!"-Commander Legion Blitz Talking about how he came to Earth.
Crossover - Stargate: SG-1 & Starsector - Rated: M - English - Humor/Sci-Fi - Chapters: 2 - Words: 5,675 - Reviews: 4 - Favs: 12 - Follows: 21 - Updated: 4/26 - Published: 4/16 - S. Carter, D. Jackson, J. O'Neill, Teal'c
The Lost Soldier by wezza1981 reviews
A lone soldier sent back in time, now lost in a different universe, with different threats. How will our OC deal with his new surroundings? Minimal TSCC references
Crossover - Stargate: SG-1 & Terminator: Sarah Connor Chronicles - Rated: K+ - English - Sci-Fi/Fantasy - Chapters: 20 - Words: 29,641 - Reviews: 20 - Favs: 43 - Follows: 53 - Updated: 4/23 - Published: 7/18/2021 - S. Carter, D. Jackson, J. O'Neill, OC
Stargate: Discordia by Sin Oan reviews
A Goa'uld scientist comes to Earth to warn the SGC about a plot being hatched by Osiris to restore Goa'uld supremacy over the galaxy. Can she be trusted, or are they being led into an elaborate trap?
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Sci-Fi/Adventure - Chapters: 20 - Words: 38,757 - Reviews: 9 - Favs: 25 - Follows: 31 - Updated: 4/14 - Published: 6/4/2021 - OC
Jack Broke His Crown by RoczaDeb reviews
When Jonathan fractured his skull in 1986, he knew something was wrong. In 1987, the bullet skimmed his skull again and he watched the helicopter take off. Jonathan died then and Jack was born. But after Ba'al… was he really alive anymore? Gen. AU. Crossover-NCIS. Spoilers. Graphic Injuries. Graphic violence. Rape Warning.
Crossover - Stargate: SG-1 & NCIS - Rated: M - English - Hurt/Comfort - Chapters: 5 - Words: 23,263 - Reviews: 10 - Favs: 10 - Follows: 6 - Published: 4/7 - Gen. Hammond, J. O'Neill, L. Ferretti, Leroy Jethro Gibbs - Complete
Shield of the Systems Alliance by J2451 reviews
World war encroaches 21st century Earth and in a bid to save it the SGC removes all alien technology while sealing the Earth gate and moves operations off-world where that develops into a colony and SHIELD was born. When Shepard finds the beacon SHIELD must step in to help prevent a galactic genocide. Stargate and ME crossover
Crossover - Stargate: SG-1 & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 12 - Words: 43,239 - Reviews: 113 - Favs: 370 - Follows: 515 - Updated: 4/7 - Published: 11/14/2019
ИксЗВКом: Зеркальное отражение by bbor1974
Перевод XSGCOM: Goa'uld Defence(Mirror Image) Оригинал: tthf .me/86hU
Crossover - Stargate: SG-1 & X-Com - Rated: T - Russian - Adventure - Chapters: 31 - Words: 151,643 - Favs: 4 - Follows: 2 - Updated: 4/7 - Published: 3/10/2021
Voyage of the Cha’tahr by CPB99 reviews
Sequel to The Sixth Race: In a test flight gone wrong, Conrad gets send to the Pegasus Galaxy. In debt to his saviors he joins yet another war against an enemy possibly responsible for the extinction of his race. And he must survive being light-years away from his love.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Sci-Fi/Adventure - Chapters: 27 - Words: 42,446 - Reviews: 2 - Favs: 7 - Follows: 5 - Updated: 4/4 - Published: 7/13/2021 - OC, S. Carter, John S., Elizabeth W. - Complete
Valkyrie of the Blue Sky by Lerris reviews
Carter finds trouble, but hey, what girl doesn't dream of super powers, even if they have a catch or two, and well, then there is the dress…
Crossover - Stargate: SG-1 & Mai HiME - Rated: T - English - Sci-Fi/Fantasy - Chapters: 7 - Words: 60,027 - Reviews: 12 - Favs: 15 - Follows: 20 - Updated: 4/3 - Published: 2/19 - S. Carter, D. Jackson, J. O'Neill, Miyu G. - Complete
Melting Ice by Athena8472
When Zordon dies, he leaves one last mission for Tommy. To protect something that has been buried in ice for 10 million years. With the help of Andros and Zhane, he heads to Antarctica. Alpha/Beta/Omega Dynamics. Sentinel/Guides known. Second in the Celestials Series.
Crossover - Stargate: SG-1 & Power Rangers - Rated: M - English - Sci-Fi/Romance - Chapters: 1 - Words: 2,854 - Favs: 5 - Follows: 7 - Published: 3/31 - [OC, Tommy O.] [Zhane, Andros]
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