Stargate: SG-1 Crossovers
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Ship of the Line: Ancient Warship Curatrix by TwistedImage reviews
Xander is drawn to a costume of a 'Gate Builder' and it has lasting consequences not just for him and his best friends but the world.
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: T - English - Adventure/Sci-Fi - Chapters: 2 - Words: 11,086 - Reviews: 45 - Favs: 378 - Follows: 492 - Updated: 6/17/2019 - Published: 3/22/2019 - Xander H.
Doctor Who Unbound - Playing with Bioweapons by TimeTraveller-1900 reviews
The Doctor decides to give the Aschen a taste of their medicine to prevent them becoming a threat for Earth in the future. (Full Fathom Five universe)
Crossover - Doctor Who & Stargate: SG-1 - Rated: T - English - Sci-Fi - Chapters: 1 - Words: 2,024 - Reviews: 3 - Favs: 18 - Follows: 8 - Published: 6/16/2019 - Complete
Endless Pantheon: God's Heart by Todeswind reviews
There has been a murder on Mt. Olympus. Harry Dresden is hired by Hades to solve his brother's murder and clear Poseidon's name. Unfortunately for Harry, at a gathering of Goa'uld murder is the least of his worries.
Crossover - Stargate: SG-1 & Dresden Files - Rated: M - English - Mystery/Adventure - Chapters: 3 - Words: 12,643 - Reviews: 74 - Favs: 318 - Follows: 368 - Updated: 6/10/2019 - Published: 5/16/2019
Harry's Gate by The walker 1982 reviews
A what if harry got away from the abuse and neglect pleas forgive any spelling or grammar fumbles this is my first story First, second, third, fourth, fith, sixth Chapter now Beta Read by Elistone thank you for all your hard work on this story. sorry now ABANDONED, up for grabs
Crossover - Stargate: SG-1 & Harry Potter - Rated: M - English - Adventure/Sci-Fi - Chapters: 10 - Words: 71,625 - Reviews: 335 - Favs: 841 - Follows: 978 - Updated: 6/10/2019 - Published: 10/10/2011 - Jacob C., Harry P.
To see the stars by Architect96 reviews
Harry Potter has finally enough. With Hermione killed in his second year, Sirius executed during his third year and terminate disease slowly killing him he wants a way out. Fulfilling his dream of going to space he changes the fate of Earth. One-shot.
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - English - Hurt/Comfort/Sci-Fi - Chapters: 1 - Words: 3,200 - Reviews: 16 - Favs: 176 - Follows: 89 - Published: 5/29/2019 - Complete
Apostle's Message Redux by Lone-ranger1 reviews
When the Reapers see the threat Shepard poses, they enact a backup plan millions of years old. A single Reaper will unleash his fury and two galaxies will never be the same. (New Chapter 13/12/16)
Crossover - Stargate: SG-1 & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 38 - Words: 435,721 - Reviews: 375 - Favs: 413 - Follows: 527 - Updated: 5/29/2019 - Published: 8/18/2011 - S. Carter, Shepard
Return to Pegasus by SGFanatic reviews
This not for profit crossover story takes place after Atlantis arrived on Earth. With the ancient city safely ensconced on our home planet, the I.O.A. has conveniently forgotten about Pegasus and our allies that sacrificed so much for Earth's benefit. But when Atlantis Base receives a desperate cry for help, the Atlantis teams spring into help backed up by some unexpected friends.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: M - English - Sci-Fi/Adventure - Chapters: 7 - Words: 13,805 - Reviews: 5 - Favs: 11 - Follows: 14 - Published: 5/21/2019
ALPHA 1 by moops reviews
SI gets dropped into the past of SG1 universe with no knowledge past season 1. all this while being a Cylon human construct.
Crossover - Stargate: SG-1 & Battlestar Galactica: 2003 - Rated: T - English - Adventure/Sci-Fi - Chapters: 3 - Words: 13,262 - Reviews: 44 - Favs: 195 - Follows: 248 - Updated: 5/12/2019 - Published: 2/13/2019 - Ra, OC
Happiness by ALIMOO1971 reviews
Jack and Sam take a chance to alter the past of the Hammersley crew and theirs.
Crossover - Stargate: SG-1 & Sea Patrol - Rated: K+ - English - Family/Romance - Chapters: 281 - Words: 601,900 - Reviews: 609 - Favs: 31 - Follows: 26 - Updated: 5/11/2019 - Published: 8/27/2017 - S. Carter, J. O'Neill, Kate, Mike - Complete
To change fate by fanfictionfanaticX reviews
Fate is a weird thing. By trying to stop it or change it, you discover that it has all already been written. Or has it? This is a Stargate and BSG 2003 crossover.
Crossover - Stargate: SG-1 & Battlestar Galactica: 2003 - Rated: T - English - Sci-Fi - Chapters: 28 - Words: 395,824 - Reviews: 350 - Favs: 394 - Follows: 500 - Updated: 5/10/2019 - Published: 12/22/2016
An Alteran of Mars by Cesiumite reviews
Was Paul Langford really the one who launched the expedition that found the Stargate in 1928? Who funded the expedition? And why is it that every one involved heard whispers of a man called John Carter? John Carter, the Warlord of Barsoom, follows his determined grandson back to Earth in the search for the Astria Porta and finds more than he bargained for.
Crossover - Stargate: SG-1 & John Carter - Rated: K+ - English - Sci-Fi/Adventure - Chapters: 2 - Words: 7,453 - Reviews: 6 - Favs: 20 - Follows: 31 - Updated: 5/4/2019 - Published: 4/28/2019 - S. Carter, Jacob C., John Carter, OC
Eat, Drink and Be Merry by Tanista2
The appearance of gray hair, barbecue-related accidents, the existence of coffee or chocolate on other planets and Christmas stories in midsummer are topics of conversation for an unusual extended family's picnic on the eve of Arrival Day. (Ad Astra 'verse)
Crossover - Stargate: SG-1 & MacGyver - Rated: T - English - Family/Romance - Chapters: 2 - Words: 3,920 - Favs: 2 - Follows: 2 - Published: 5/4/2019 - D. Jackson, J. O'Neill, MacGyver, OC - Complete
All You Can Eat? by Salchat reviews
Ronon, Teal'c and Sam visit an All You Can Eat buffet in Colorado Springs. Humour and just a little bit of mayhem ensues...
Crossover - Stargate: Atlantis & Stargate: SG-1 - Rated: T - English - Humor/Friendship - Chapters: 5 - Words: 4,775 - Reviews: 6 - Favs: 16 - Follows: 7 - Published: 4/30/2019 - Teal'c, Ronon D., S. Carter/Sam - Complete
Who said retirement was boring by WAG2002 reviews
He was ready for another adventure. Retirement wasn't all it had cracked up to be. He'd traveled the globe visiting all the sights, tombs and monuments he could. Nothing quite compared to the Stargate travel though. Maybe his next trip will hold more excitement - complete for now
Crossover - Stargate: SG-1 & Sanctuary - Rated: K - English - Friendship - Chapters: 4 - Words: 1,840 - Reviews: 4 - Favs: 5 - Follows: 10 - Updated: 4/21/2019 - Published: 4/26/2018 - Complete
The Cat, Witch and the Wormholes by KatzSmile reviews
Once upon a time there was a False God. He was sardonic, selfish and arrogant. But the sudden uprising forced him to live a new life in exile for five thousand years. This story is My Little Pony: Friendship is Magic crossover with Stargate TV-series and Worm webnovel. And because story contains crossover elements with Worm there would be some graphic brutality, gore and profanity
Crossover - Stargate: SG-1 & My Little Pony - Rated: M - English - Adventure/Sci-Fi - Chapters: 18 - Words: 59,961 - Reviews: 1 - Favs: 13 - Follows: 19 - Updated: 4/14/2019 - Published: 3/30/2019 - OC, Princess Celestia, Princess Cadance/Princess Mi Amore Cadenza, Sunset Shimmer
Invaded Earth by Darkstar163 reviews
For Longer than Humans have been aware, the Earth has been sought after by others from the stars. Mankind survives and rises, but now must prepare for the greatest threat ever, and no, It's not the Reapers.
Crossover - Stargate: SG-1 & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 1 - Words: 5,105 - Reviews: 29 - Favs: 128 - Follows: 159 - Published: 4/11/2019
The Reminder by I'mcalledZorro reviews
Gen. Carter reminds James MacGyver that she hasn't forgotten the favor that she is owed, a sequel to The Recruit.
Crossover - Stargate: SG-1 & MacGyver - Rated: K - English - Chapters: 1 - Words: 914 - Reviews: 2 - Favs: 7 - Follows: 4 - Published: 4/8/2019 - S. Carter, J. O'Neill, Jack D., MacGyver
Stargate SG-1: Mission to Abydos by phillip.madsen.52 reviews
Colonel O'Neill is recalled back active duty. Thanks to the fact that Stargate was activated at the SGC. Knowing full well this would happen again. What he never knew was that Captain Carter- O'Neill was going to be assigned to the SG-1. Part in here soon called rise of the Tarui, Rise world under the USA, Build first major Tarui-Asgard Fleet. T-M. P.S. If you not 6 - 13 don't read
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Adventure/Romance - Chapters: 21 - Words: 52,017 - Reviews: 14 - Favs: 25 - Follows: 27 - Updated: 4/7/2019 - Published: 10/5/2013 - [S. Carter, J. Fraiser, J. O'Neill] J. Hailey
Gates in a Wasteland by survivor275 reviews
Michael Everton and the crew of the TAV Centurion are on their way home from a routine archaeological dig with some mysterious properties and they are thrown into a strange, irradiated, new world.
Crossover - Stargate: SG-1 & Fallout - Rated: M - English - Adventure/Sci-Fi - Chapters: 3 - Words: 4,218 - Reviews: 2 - Favs: 10 - Follows: 8 - Published: 3/26/2019 - OC, Lone Wanderer, Courier, Sole Survivor
Imperialized Atlantis by Dragons123d reviews
(Joke Fic) Harry Potter, Master of Death, has always wanted to pit the Imperial Navy and Army against the rest of the universe, but now that he is back in the good old SG1 universe, now is the best time to start his plans for this, by using Lantean technology! (Harem pairing, Silliness and Star Wars goodness! You have been warned!)
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - English - Humor/Sci-Fi - Chapters: 4 - Words: 4,647 - Reviews: 40 - Favs: 212 - Follows: 253 - Updated: 3/22/2019 - Published: 2/19/2019 - [Harry P., OC, S. Carter, Mrs. Granger]
Where He Belongs by Moon Child 101
We all know Daniel wants to go to Atlantis. Jack had his reasons but what caused his change of heart?
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: M - English - Romance/Fantasy - Chapters: 1 - Words: 811 - Published: 3/20/2019 - D. Jackson, J. O'Neill, Rodney M., John S.
Visions of a Father by lateVMlover reviews
When Cordelia is being tormented by vision overload and hospitalized, Thor discovers her relationship to Jack O'Neill. How will he and his team handle knowing about the supernatural world? What he lengths will he go to in order to end his daughter's pain? This is an Angel/SG-1 crossover only.
Crossover - Stargate: SG-1 & Angel - Rated: K - English - Family/Hurt/Comfort - Chapters: 6 - Words: 18,369 - Reviews: 38 - Favs: 81 - Follows: 70 - Updated: 3/18/2019 - Published: 8/11/2018 - Complete
Beyond Sol System by Starbuck1988 reviews
What would have happened if the Dark ages only lasted 100 years, and a series of unfortunate events were to bring 2 different universes together? If you new how certain things unfold, how would humanity handle themselves?
Crossover - Stargate: SG-1 & Expanse - Rated: T - English - Adventure/Sci-Fi - Chapters: 5 - Words: 16,340 - Reviews: 32 - Favs: 51 - Follows: 64 - Updated: 3/16/2019 - Published: 11/22/2018 - J. Quinn, Alex K., Amos B., Bobbie D.
Dr Magnus gets a call from Dr Fraiser by 907dogtrainer reviews
In SG1 'The Broca Divide' Dr Fraiser says she's got calls into every specialist in the service. What if she also called Helen Magnus.
Crossover - Stargate: SG-1 & Sanctuary - Rated: K - English - Sci-Fi/Mystery - Chapters: 1 - Words: 385 - Reviews: 4 - Favs: 5 - Follows: 2 - Published: 3/6/2019 - Complete
Think Before You Drink by Tanista2
A drunken confession from an unlikely source. Also, a new side of Carter is revealed. (Crossover of sorts with my classic MacGyver AU Domestic Adventures, Ad Astra 'verse)
Crossover - Stargate: SG-1 & MacGyver - Rated: T - English - Family/Humor - Chapters: 1 - Words: 2,900 - Favs: 4 - Follows: 1 - Published: 3/6/2019 - D. Jackson, J. O'Neill, MacGyver, OC - Complete
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