Stargate: SG-1 Crossovers
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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: 20 - Words: 140,024 - Reviews: 57 - Favs: 62 - Follows: 83 - Updated: 37m - Published: 9/25/2021 - [Adora/She-Ra, Catra] S. Carter, J. O'Neill
Halo: Down Fall Of The Gods by Reaper Eye Fuck ONI reviews
It is said that when an Era ends it usually ends with either Man almost dying or a lot of civilizations crumbling this is that story...if it was told by a Emo kid but no this story is told through "Fuck you and fuck your empire" "Run Xenos run for man marches"-Unknow soldier as he was shooting a Jaffa in the face with a shotgun.
Crossover - Stargate: SG-1 & Halo - Rated: M - English - Sci-Fi/Humor - Chapters: 7 - Words: 14,212 - Reviews: 28 - Favs: 50 - Follows: 62 - Updated: 2/3 - Published: 12/19/2021 - Ra, Thor, Master Chief/John-117, A. J. Johnson
Mechanical Warfare by CPB99 reviews
(Sequel to Rise of a new System Lord.). Four years after Jack ends the war with the Goa’uld, a new threat rises from the ashes of a formidable foe. Only he can stop it and to do so, he must leave home for Atlantis.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Adventure - Chapters: 12 - Words: 7,935 - Reviews: 10 - Favs: 6 - Follows: 10 - Updated: 2/3 - Published: 12/13/2021 - J. O'Neill, S. Carter, John S.
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: 11 - Words: 28,901 - Reviews: 8 - Favs: 7 - Follows: 17 - Updated: 2/3 - Published: 6/1/2021 - S. Carter
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: 8 - Words: 44,699 - Reviews: 181 - Favs: 396 - Follows: 668 - Updated: 2/1 - Published: 12/11/2021 - Gen. Hammond, Harry P., Hermione G., Lee J.
The Connection by Keikokin
Previously posted at Wraithbait. John Sheppard is about to find the real reason behind having the ancient genes. Slash warning! Some het too. Requested by Revenantzero. Thanks to Nefernat. Also published under my second nom de plume, Kenaf.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: M - English - Romance - Chapters: 19 - Words: 35,804 - Favs: 4 - Follows: 2 - Published: 2/1 - D. Jackson, J. O'Neill, Rodney M., John S. - Complete
Shattered Times and Timelines: Odyssey out of time by the stargate time traveller reviews
AU By a strange twist of fate, a pre-warp ship appears through the Bajoran wormhole. Starfleet discovers the ship is the Odyssey, a ship from the Stargate Universe where a different series of events took place there. Containing the sum total of Asgard knowledge, Starfleet has a chance to change in ways nobody could have imagined.
Crossover - StarTrek: Deep Space Nine & Stargate: SG-1 - Rated: T - English - Sci-Fi - Chapters: 4 - Words: 13,353 - Reviews: 35 - Favs: 117 - Follows: 155 - Updated: 2/1 - Published: 1/1
Odyssey by the stargate time traveller reviews
The Alphans discover a ship on the dark side of their moon. The Alphans now have a ship that will change their entire future for good. The Alphans can now find a new home. The Alphans...can now return home. Their Odyssey will go on.
Crossover - Stargate: SG-1 & Space 1999 - Rated: T - English - Sci-Fi - Chapters: 5 - Words: 17,487 - Reviews: 15 - Favs: 33 - Follows: 47 - Updated: 2/1 - Published: 12/20/2021
Stargate: Dark Empire by Commmander Nash reviews
Six months after the return of the Destiny Expedition, the Milky Way Galaxy has been plenty of changes for the better. But in the Pegasus Galaxy, a new threat is rising. Soon, Colonel Vale and the crew of Spera find themselves heading out to come to the aide of Atlantis and her allies...
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: M - English - Sci-Fi/Adventure - Chapters: 26 - Words: 60,649 - Reviews: 3 - Favs: 8 - Follows: 11 - Updated: 1/30 - Published: 5/8/2021 - Jonathan O., John S., Laura C., Amelia B.
Celeste by Amelia E. Adler reviews
Continuation of Midnight Blue, Azure, and Shades of Blue: Intermission. After returning to her own timeline, Alice Boyd has to deal with the fallout. Chasing and confronting her nemesis will only be a part of her struggle; more than anything, she will have to face her own emotions, and who knows where they'll lead her in the end... OC with no AU - futurefic.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Sci-Fi/Adventure - Chapters: 23 - Words: 160,862 - Reviews: 60 - Favs: 28 - Follows: 38 - Updated: 1/30 - Published: 3/4/2021
Stars bound in shadows by Illuviar reviews
The Stargate show implied that the timeline we saw in on screen was arguably the best. We outrigts saw many realities where various decisions and bad luck either doomed Earth, or saw it pay much higher price for its eventual ascension as a galactic power. This is a story about one of those realities where sheer luck and relying on a last minute resque are not wise decisions...
Crossover - Star Wars & Stargate: SG-1 - Rated: M - English - Sci-Fi/Adventure - Chapters: 18 - Words: 60,220 - Reviews: 87 - Favs: 235 - Follows: 277 - Updated: 1/29 - Published: 12/14/2021 - J. O'Neill, Ba'al, OC
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: 4 - Words: 13,319 - Reviews: 4 - Favs: 21 - Follows: 28 - Updated: 1/27 - Published: 12/16/2021
Star Granger - Season 3 by SFD reviews
Out there, HMS Hind is an amazing sight. An empty sphere of space, but for the occasional lighting of its shields, yet spitting out fire at an amazing rate. "Keep us at the edge of targeting range and keep pulling those two Ha'tak away from Improved." I instruct the Jaffa in command.
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - English - Sci-Fi/Adventure - Chapters: 13 - Words: 48,958 - Reviews: 166 - Favs: 419 - Follows: 618 - Updated: 1/27 - Published: 8/12/2021 - S. Carter, D. Jackson, Harry P., Hermione G. - Complete
Star Granger - Season 4 by SFD reviews
The story so far: In the beginning, Isis tried to take over Hermione. This has made many people angry, mainly Harry and Hermione herself, and been widely regarded as a bad move on her part. Now, with some of Isis's knowledge about how exciting and dangerous the greater galaxy can be, they prepare to do something about it. With a team, ships, and allies - it's time to go to war!
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - English - Sci-Fi/Adventure - Chapters: 1 - Words: 4,533 - Reviews: 10 - Favs: 195 - Follows: 313 - Published: 1/27 - S. Carter, D. Jackson, Harry P., Hermione G.
Well That's a Surprise by midnightread reviews
There's a surprise visit from Earth which leads to a few surprises for Sam and SGA1.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: K+ - English - Chapters: 1 - Words: 3,195 - Reviews: 5 - Favs: 4 - Follows: 3 - Published: 1/27 - Complete
LOS NIÑOS DEL OCASO by aletan marxan reviews
Las Doce Colonias de Kobol no están solas como pensaban y la Vía Láctea tiene secretos y peligros, de los cuales aprender y huir. ¿Cómo responderán a ello?.
Crossover - Stargate: SG-1 & Battlestar Galactica: 2003 - Rated: T - Spanish - Chapters: 16 - Words: 90,008 - Reviews: 39 - Favs: 18 - Follows: 17 - Updated: 1/25 - Published: 4/30/2019
Here Comes Trouble Make It Double by mcguire.elizabeth.99990000 reviews
Harry has a twin sister who Dumbledore left in American but with complete strangers instead of part family ooc twin HPGW HRFW Dumbledore, ron, molly bashing slight Mcgonicall bashing
Crossover - Harry Potter & Stargate: SG-1 - Rated: M - English - Adventure/Fantasy - Chapters: 4 - Words: 1,885 - Reviews: 4 - Favs: 8 - Follows: 19 - Updated: 1/24 - Published: 12/3/2020
Worldwar: Establishing A Balance by AlbertG reviews
Summary-Book IV: Years ago, the Colonials of Cyrannus met the so-called 13th tribe. It didn't work out well. The Colonials met the Race. That didn't work out well either, but they were introduced to a much larger galaxy. Now their errors have come back and they know they are small fish in a large ocean trying to survive. Can they? Will the Race let them?
Crossover - Stargate: SG-1 & Battlestar Galactica: 2003 - Rated: T - English - Sci-Fi/Adventure - Chapters: 31 - Words: 199,624 - Reviews: 876 - Favs: 548 - Follows: 667 - Updated: 1/23 - Published: 3/6/2016
Alan - Kree by Pascal in Quebec reviews
IR – International Rescue; a name known and honored across Earth for altruism, freely given help and technical miracles. The truth inside was not so loving or helpful. Alan being fed-up with his relatives' abuses takes the one lucky event given him to get out of their clutches, thus falling through the Stargate and into the claws of an ancient legendary creature forgotten by all.
Crossover - Stargate: SG-1 & Thunderbirds - Rated: M - English - Sci-Fi/Hurt/Comfort - Chapters: 3 - Words: 204,629 - Reviews: 1 - Favs: 7 - Follows: 7 - Updated: 1/21 - Published: 11/1/2021 - Alan T.
Not Who I Think I Am by kattracks9599 reviews
Part 1 of the Not Who I Think I Am Series. Examining Loki's experiments on Jack the Asgard uncover experiments done not just on Sam, but Helen also. Set at the end of season 7 of SG1 and the start of Sanctuary. Episodes will from both shows will have minor changes and Sanctuary Episodes will be out of order to better fit with the storys.
Crossover - Stargate: SG-1 & Sanctuary - Rated: T - English - Drama/Suspense - Chapters: 15 - Words: 42,332 - Reviews: 45 - Favs: 64 - Follows: 124 - Updated: 1/19 - Published: 12/21/2014 - [S. Carter, J. O'Neill] [Helen M., Nikola T.]
Stumbling through Godhood by freeraynman reviews
If you could travel through alternate realities what would you do? Become a God and rule or chillback and go with the flow? Inspired heavily by 'Cruel To be Kind', '12 Steps To Omnipotence', 'Rise of an Empire' and a million and one other fanfics. If you see stuff and think that it's similar to another fanfic. it's probably because we read the same story and I liked that idea.
Crossover - Stargate: SG-1 & Harry Potter - Rated: M - English - Chapters: 8 - Words: 47,642 - Reviews: 99 - Favs: 408 - Follows: 559 - Updated: 1/16 - Published: 9/29/2021 - S. Carter, D. Jackson, J. O'Neill, OC
Of Crossed Wires and Wormholes by Wild Force Ranger reviews
A vaguely military secret team charged with protecting Earth from wormholes...meets a mostly military secret team charged with protecting Earth from wormholes. Chaos (and a lot of sarcasm) ensues.
Crossover - Stargate: SG-1 & Primeval - Rated: K - English - Drama/Humor - Chapters: 4 - Words: 15,813 - Reviews: 6 - Favs: 16 - Follows: 22 - Updated: 1/16 - Published: 6/6/2021
A Brutal Truth REWRITE by ReadyAimWait reviews
ADOPTED FROM BIG Z1776: When the Twelve Colonies and Earth are brought together through a technical fluke some may wish the fluke had not occurred at all. Because with two great spacefaring powers not everything can end well for both of them.
Crossover - Stargate: SG-1 & Battlestar Galactica: 2003 - Rated: T - English - Adventure/Sci-Fi - Chapters: 16 - Words: 104,799 - Reviews: 161 - Favs: 169 - Follows: 258 - Updated: 1/15 - Published: 10/6/2021
The lone knight by d'elfe reviews
2010. Sequel to 'All Hail to the King'. Frances is the Keeper of Time, and she has accomplished many more travels through time ever since the fifth century where she met Arthur and his knights. Maybe now, time has come for her to shed loneliness behind, and trust a soul she'd known and lost long ago.
Crossover - King Arthur & Stargate: SG-1 - Rated: M - English - Romance/Angst - Chapters: 28 - Words: 112,704 - Reviews: 51 - Favs: 8 - Follows: 11 - Updated: 1/12 - Published: 9/25/2019 - Tristan, OC
Stargate: Valkyrie (Revision 4) by Brenna's Urbangirl Projects reviews
Summary: On that fateful Halloween night. Buffy, Xander, Willow, Dawn, Cordelia, Giles, Jenny Calendar and Tara Maclay 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 - Supernatural/Sci-Fi - Chapters: 15 - Words: 39,871 - Reviews: 33 - Favs: 111 - Follows: 192 - Updated: 1/11 - Published: 12/8/2021 - Xander H., Buffy S., Dawn S., Willow R.
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