Stargate: SG-1 Crossovers
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A Tau'ri in Westeros by fmfan1980 reviews
After a mission that went wrong, Captain Alayne Collins of the Tau'ri finds herself on another world. A medieval world were she finds herself with a double of her mother and brother- that is if she can save them from their fate. A world where her double is surrounded by lions, a world where the powerful play games of betrayals. And all Alayne wants to do is return home.
Crossover - Stargate: SG-1 & Game of Thrones - Rated: K+ - English - Chapters: 6 - Words: 31,001 - Reviews: 59 - Favs: 109 - Follows: 175 - Updated: 2/16 - Published: 6/20/2018
Stargate Shangri-la by Shagohad12 reviews
After years of shame and ridicule, archaeologist and explorer Lyra Heartstrings stumbles across a discovery that validates all her theories and ideas in one fell swoop. Along with her best friend, Bon Bon, and her old classmate Cadance, they find themselves faced with a mystery and marvel that may change everything. This story is primarily published by myself on Fimfiction
Crossover - Stargate: SG-1 & My Little Pony - Rated: T - English - Sci-Fi/Adventure - Chapters: 26 - Words: 158,153 - Reviews: 7 - Favs: 17 - Follows: 26 - Updated: 2/16 - Published: 8/24/2017 - S. Carter, D. Jackson, Lyra, Bon Bon
My Mommy, the Hok'tar by mmooch reviews
Buffy's pregnant, but who's the lucky guy? Pairing unsure for now. WARNING: Character death.
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: M - English - Family - Chapters: 11 - Words: 18,255 - Reviews: 116 - Favs: 147 - Follows: 227 - Updated: 2/15 - Published: 10/27/2010 - Buffy S.
Zeppo no more am I (Rewrite) by Sentinel1977 reviews
A Story by stargatesg1fan1 found around the internet. He has a lot of Story's around other sites. Look inside to know where i found this one. I liked his Story a lot. It just seemed to rushed at Times. Hey stargatesg1fan1 if you don't like me rewriting this one. Send me a PM and i will remove it. Hope you will give me a Chance. #fingerscrossed 1. Cleanup 2. Rewrite
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: M - English - Sci-Fi/Romance - Chapters: 5 - Words: 26,156 - Reviews: 15 - Favs: 90 - Follows: 128 - Updated: 2/15 - Published: 12/17/2019 - Xander H., Calendar, J., Cordelia C., S. Carter
The Past Meets The Future- Changing History Part 3: New Future Reveals by BazzCatgirl03 reviews
With the missions the team had done, SG-1 and their friends prepare and wait for the countdown to end. Only to discover a shocking truth about Jack O'neill and Janet Frasier's involvement in the NID. And with it one that could change the course of history in the tv show history focused on them now. Can they fix that past mistake or will the future for SG-1 play out in the same way.
Crossover - StarTrek: The Next Generation & Stargate: SG-1 - Rated: T - English - Sci-Fi/Hurt/Comfort - Chapters: 82 - Words: 871,980 - Reviews: 3 - Favs: 10 - Follows: 8 - Updated: 2/14 - Published: 11/10/2018 - J. Picard, Gen. Hammond, D. Jackson, Jacob C. - Complete
Stargate: The Twelve Colonies by Seraphin2011 reviews
The Cylons are preparing to attack the Colonies, and they are determined to end all human existence once and for all. But the Cylons don't know the Terrans have learned about their attack, and they will not stay idle and let the Cylons commit such atrocity, not if they can help it. This is a spin-off from the other story I'm writing, splitting around the half of the second book.
Crossover - Stargate: SG-1 & Battlestar Galactica: 2003 - Rated: T - English - Sci-Fi/Adventure - Chapters: 32 - Words: 279,519 - Reviews: 948 - Favs: 816 - Follows: 1,073 - Updated: 2/13 - Published: 5/21/2013
Stargate - Sacrifice of the Ascended by mason360 reviews
Self Insert- Oma Desala tries to stop Anubis but fails. For reasons she doesnt understand the Others lash out at her, stoping her and sending her to a fateful encounter with James, a normal young lad from Scotland
Crossover - Stargate: SG-1 & Halo - Rated: M - English - Sci-Fi/Adventure - Chapters: 4 - Words: 9,250 - Reviews: 18 - Favs: 59 - Follows: 82 - Updated: 2/6 - Published: 1/21 - OC, Librarian
Venturing into the Unexpected by erttheking reviews
What is supposed to be another routine planet exploration for SG-1 takes a turn for the unexpected and bizarre when they find a planet that defies all previous expectations. Patreon sponsored one-shot
Crossover - Stargate: SG-1 & RWBY - Rated: T - English - Chapters: 1 - Words: 7,013 - Reviews: 13 - Favs: 46 - Follows: 51 - Published: 2/5
Col Amethyst by lizardsocks
O'Neill ends up in a world that seems pretty familiar - except that an alien named Pearl comes through the Stargate behind him, and someone named Amethyst has his job.
Crossover - Stargate: SG-1 & Steven Universe - Rated: K - English - Sci-Fi - Chapters: 8 - Words: 8,123 - Favs: 2 - Follows: 1 - Updated: 2/5 - Published: 11/30/2019 - J. O'Neill, Amethyst, Pearl - Complete
The Past Meets The Future-Changing The Future Part 4: The Past Reborn by BazzCatgirl03 reviews
With the timer in the past over, the future members that decided to get involved prepare for their own time-line to end. As both groups prepare to change the past, can past events be rectified. When in the mid to late 20th century and the early 21st century be fixed, or will the present and past happen all over again. Time travel story, alternate reality in both shows.
Crossover - StarTrek: The Next Generation & Stargate: SG-1 - Rated: T - English - Sci-Fi/Family - Chapters: 6 - Words: 60,907 - Reviews: 1 - Favs: 2 - Follows: 1 - Updated: 2/3 - Published: 12/1/2019 - J. Picard, Wesley C., Gen. Hammond, Jacob C.
Scattered Leaves Part 1 by Mini Goat reviews
Lost in time. Mal takes a bounty only to find that as usual, nothing is as it seems.
Crossover - Stargate: SG-1 & Firefly - Rated: M - English - Romance/Western - Chapters: 17 - Words: 26,498 - Reviews: 39 - Favs: 9 - Follows: 12 - Updated: 1/29 - Published: 1/10 - [J. O'Neill, S. Carter] Mal, R. Tam
The Chosen Ones and the Path Of Truth- Book I: The Return To Tatooine by BazzCatgirl03 reviews
During a mission SG-1 learns that their mission is protecting Anakin Skywalker from the time he is 9 years old to help Anakin from getting turned to the dark-side. Combined with that mission comes a shocking truth to Daniel and where his intuition of his skills are demonstrated, resolved to take the mission they decide to fix their bonds as their new mission is based in his galaxy.
Crossover - Star Wars & Stargate: SG-1 - Rated: T - English - Romance/Sci-Fi - Chapters: 46 - Words: 516,117 - Reviews: 19 - Favs: 62 - Follows: 64 - Updated: 1/23 - Published: 2/19/2014 - Anakin Skywalker, Padmé Amidala, S. Carter, D. Jackson - Complete
Stargate Legacy by zooropa1
SG1/PTL crossover with original characters
Crossover - Stargate: SG-1 & Poltergeist: the Legacy - Rated: T - English - Sci-Fi/Supernatural - Chapters: 1 - Words: 24,768 - Favs: 1 - Published: 1/22 - S. Carter, J. O'Neill, Alex M., Nick B.
Stargate Valkyrie by Brenna's Urbangirl Projects reviews
On that fateful Halloween night. Buffy, Xander, Willow, Dawn, Cordelia, Harmony, Giles, Jenny Calendar and Oz would be given a new destiny. Along with that destiny they would be given a 3 space going vessels in which to help fight the Goa'uld.
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: T - English - Sci-Fi/Supernatural - Chapters: 10 - Words: 22,838 - Reviews: 69 - Favs: 281 - Follows: 408 - Updated: 1/13 - Published: 6/15/2017 - Xander H., Buffy S., Dawn S., Willow R.
Assimilating the Ancients by Acaykath reviews
A spacial anomaly crashes a Borg cube in a universe not their own. Very little of their technology survives the crash. The Borg must create a new collective and conquer the universe to find a way to rejoin their brethren. They will not be stopped. Resistance is futile.
Crossover - StarTrek: Voyager & Stargate: SG-1 - Rated: T - English - Sci-Fi - Chapters: 1 - Words: 5,646 - Reviews: 5 - Favs: 23 - Follows: 29 - Published: 1/11
Stargate A New Age by kaln7 reviews
Shepard defeated the Collectors, but now he must face a universe different from his own, but his team won't be the only team to help him get through this uncertain future.
Crossover - Stargate: SG-1 & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 11 - Words: 87,007 - Reviews: 120 - Favs: 179 - Follows: 290 - Updated: 1/5 - Published: 4/6/2017
Idea Haec Mala by How-not-to-do-something reviews
When they won the battle, they thought it was over. Too bad the universe had other ideas. Rated T for violence and some mature content.
Crossover - Stargate: SG-1 & RWBY - Rated: T - English - Adventure - Chapters: 3 - Words: 18,260 - Reviews: 12 - Favs: 32 - Follows: 37 - Updated: 1/4 - Published: 5/15/2019
Shaya Azraq - Something Blue by Mini Goat reviews
Mac never minded helping the SGC out, but the concussions should qualify him for hazard pay
Crossover - Stargate: SG-1 & MacGyver - Rated: K+ - English - Humor/Family - Chapters: 7 - Words: 7,143 - Reviews: 9 - Favs: 4 - Follows: 4 - Updated: 1/4 - Published: 12/29/2019 - S. Carter, J. O'Neill, MacGyver - Complete
Big Mac Attack by Shadow Goat Alice reviews
Sharlynn regales her cousin with tales of the New Years party post Sam and Jack drama
Crossover - Stargate: SG-1 & MacGyver - Rated: T - English - Humor/Family - Chapters: 1 - Words: 1,270 - Reviews: 1 - Favs: 2 - Follows: 1 - Published: 1/2 - OC, MacGyver, Sam - Complete
Faith Under Fire by CzarZelinsky reviews
Part 2 of Thor's Slayers: Thor knows more about Earth's exotic wildlife than Stargate Command could have imagined. Thor decides to rectify that situation. SG-1 might be a little better if they just had some Faith. (Buffy/Angel/SG1/SG:A Characters. Story could become M in the future.)
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: T - English - Supernatural/Sci-Fi - Chapters: 10 - Words: 75,664 - Reviews: 3 - Favs: 44 - Follows: 26 - Published: 1/2 - [Faith L., Buffy S.] D. Jackson, J. O'Neill - Complete
Thor's Slayers by CzarZelinsky reviews
Part 1 of Thor's Slayers: Thor knows more about Earth's exotic wildlife than Stargate Command could have imagined. Thor decides to rectify that situation. SG-1 might be a little better if they just had some Faith. (Buffy/Angel/SG1/SG:A Characters. Story could become M in the future.)
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: T - English - Supernatural/Sci-Fi - Chapters: 10 - Words: 26,217 - Reviews: 4 - Favs: 51 - Follows: 31 - Published: 1/2 - Faith L., Wesley W., J. O'Neill, Thor - Complete
Stargate: Through the Looking Glass by Brenna's Urbangirl Projects reviews
As Buffy jumped to close the Portal in "The Gift" Dawn was hit by a tendril of energy from the portal sending her into a new reality. Buffy is sent to continue to protect Dawn in the new universe and they are placed in the care of a certain member of SG-1 as her daughters with everyone's memories being modified to believe Buffy and Dawn had always been there.
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: T - English - Sci-Fi - Chapters: 41 - Words: 182,479 - Reviews: 50 - Favs: 156 - Follows: 195 - Updated: 1/1 - Published: 12/6/2012 - Buffy S., Dawn S., S. Carter
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
Crossover - Stargate: SG-1 & StarCraft - Rated: T - English - Sci-Fi/Adventure - Chapters: 1 - Words: 2,561 - Reviews: 1 - Favs: 21 - Follows: 28 - Published: 1/1 - Gen. Hammond, J. O'Neill, OC, Abathur
Return of the Alterans by SSG-Goku3397 reviews
At the tender age of five, Harry has a bout of incredible accidental magic drawing the attention of the Ascended Alterans. Though the Ascended don't intervene, they decide to bend the rule by allowing Janus and Ganos Lal to raise Harry until the age of nine before sending him and his guardians to the Tartarus City Ship to continue his life and try to bring back the Alterans!
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - English - Sci-Fi/Fantasy - Chapters: 9 - Words: 65,823 - Reviews: 334 - Favs: 1,243 - Follows: 1,648 - Updated: 12/31/2019 - Published: 5/26/2019 - [Harry P., OC]
Much Ado by Shadow Goat Alice reviews
It's the day after Christmas day and Jack's life is upended with a shocking revelation.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Humor/Romance - Chapters: 6 - Words: 8,485 - Reviews: 8 - Favs: 2 - Follows: 4 - Updated: 12/31/2019 - Published: 12/26/2019 - S. Carter, J. Fraiser, J. O'Neill, Elizabeth W.
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