Stargate: SG-1 Crossovers
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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: 8 - Words: 10,261 - Reviews: 19 - Favs: 52 - Follows: 77 - Updated: 6h - Published: 10/28/2023 - D. Jackson, Danny F., J. O'Neill, Sam M.
One Big Jump by goulmeister1 reviews
AU:An Aerlion ship on patrol encounters the Cylons at the beginning of the first Cylon war and suffers a misjump, forty years later an expedition leaves Earth.
Crossover - Stargate: SG-1 & Battlestar Galactica: 2003 - Rated: T - English - Chapters: 6 - Words: 71,276 - Reviews: 12 - Favs: 16 - Follows: 21 - Updated: 22h - Published: 1/7
UNSC Ascension des Tau'ri by Kagaho0 reviews
Quand l'équipage du Spirit of Fire voulais rentrer sur Terre ils ne s'attendait pas a se retrouver face a un monde si semblable a la leur mais pourtant si différent. Mais et si c'était là une chance pour eux de sauvé des vie ! La renaissance du CSNU par Ultimate Deathsaurer 2 m'as beaucoup inspirer. Je vous conseil d'ailleurs d'aller lire son histoire elle est vraiment génial !
Crossover - Stargate: SG-1 & Halo - Rated: T - French - Sci-Fi/Adventure - Chapters: 6 - Words: 73,886 - Reviews: 31 - Favs: 33 - Follows: 41 - Updated: 1/5 - Published: 12/31/2022 - Gen. Hammond, J. O'Neill, J. Cutter, E. Anders
Roads Paved in Shadows by AlbertG reviews
"We don't have information on the numbers yet, sir," one of the commanders answered quickly. "It's not the Cylons. The Thirteenth Tribe is attacking us. We're at war with Earth." Adar was completely stunned that emotion quickly turning into a burning rage. "But why?" he snarled as his rage turned into a need for vengeance.
Crossover - Stargate: SG-1 & Battlestar Galactica: 2003 - Rated: K+ - English - Sci-Fi/Adventure - Chapters: 58 - Words: 301,085 - Reviews: 953 - Favs: 479 - Follows: 558 - Updated: 1/4 - Published: 3/19/2017 - J. O'Neill, W. Adama
Everything Everywhere One Thing at a Time by Karmic Acumen reviews
Dreams had always been an escape for Harry Potter, but he was pretty sure that you weren't supposed to dream entire lives all at once. Now what's this whole dimensions malarkey and what does divination have to do with it? (Multicrossover)
Crossover - Harry Potter & Stargate: SG-1 - Rated: T - English - Chapters: 19 - Words: 128,574 - Reviews: 191 - Favs: 894 - Follows: 1,140 - Updated: 1/4 - Published: 8/2/2022 - Harry P., Nicolas F.
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: 172 - Words: 1,175,890 - Reviews: 463 - Favs: 206 - Follows: 225 - Updated: 1/4 - Published: 9/25/2021 - [Adora/She-Ra, Catra] S. Carter, J. O'Neill
Stargate Atlantis Trading Grounds II: Activation Of The SGA by BazzCatgirl03 reviews
In the middle of preparing for a training game, Commander Daniel Jackson decides to show the cadets the truth. And of what SGC/NID complicit operatives attempted to sabotage him. As he starts to realize, everything connected to his childhood trauma. Created a more intense flashback, in the form of Hathor and her army: The Military Intelligence Services and NID, alternate Season 3.
Crossover - StarTrek: The Next Generation & Stargate: SG-1 - Rated: T - English - Sci-Fi/Angst - Chapters: 112 - Words: 1,144,248 - Reviews: 2 - Favs: 3 - Follows: 3 - Updated: 1/2 - Published: 12/4/2024 - Guinan, J. Picard, D. Jackson, Gen. Landry - Complete
HALO-STARGATE: All the Stars in the Sky: Book I by Spartan-076A reviews
The UNSC will have to navigate a galaxy poised to rip itself apart between the ambitions of the System Lords and the scheming of the San'Shyuum Hierarchs. Will humanity triumph and rise victorious from these trials, or will it fall by the hands of its enemies? Only time will tell.
Crossover - Stargate: SG-1 & Halo - Rated: M - English - Sci-Fi - Chapters: 4 - Words: 19,359 - Reviews: 10 - Favs: 45 - Follows: 65 - Updated: 1/1 - Published: 8/1/2024 - S. Carter, Gen. Hammond, J. O'Neill, Master Chief/John-117
Turning the Tide by TannaraMoonvale reviews
After being tortured horribly at Malfoy Manor, Hermione is teleported to another location. Where did she go?
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - English - Adventure/Family - Chapters: 1 - Words: 7,909 - Reviews: 2 - Favs: 14 - Follows: 8 - Published: 1/1 - J. Fraiser, Gen. Hammond, Harry P., Hermione G. - Complete
The Darkness and an Ancient by fmfan1980 reviews
The Ancient known as Athena is relaxing on board the Destiny when it comes upon a galaxy it refuses to enter. She sees a strange energy signature that has covered the entire galaxy and she has to investigate. This is a re-upload of my old X-Over with some changes.
Crossover - Star Wars & Stargate: SG-1 - Rated: K+ - English - Chapters: 2 - Words: 7,904 - Reviews: 12 - Favs: 45 - Follows: 70 - Updated: 1/1 - Published: 11/19/2022
A Tauri 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. (Re-upload)
Crossover - Stargate: SG-1 & Game of Thrones - Rated: K - English - Chapters: 9 - Words: 43,673 - Reviews: 8 - Favs: 55 - Follows: 84 - Updated: 12/31/2024 - Published: 7/21/2023
An Extraordinary Journey by fmfan1980 reviews
Willow from Sunnydale arrives at the SGC under extraordinary circumstances and goes on amazing adventures with the gang from the SGC. BSG:2003 also included in later chapters. (19.12.2022: Edits to Ch. 17 and 18)
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: T - English - Sci-Fi/Drama - Chapters: 229 - Words: 1,546,962 - Reviews: 1087 - Favs: 556 - Follows: 627 - Updated: 12/31/2024 - Published: 1/26/2014 - [Faith L., Willow R.]
A Veiled Escape by TannaraMoonvale reviews
The war was over, the Light lost. Few of the Light remain. Hermione spent her time studying the Veil, trying to unravel it's mysteries in hopes it could help them escape.
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - English - Adventure/Friendship - Chapters: 3 - Words: 12,166 - Reviews: 30 - Favs: 156 - Follows: 136 - Updated: 12/31/2024 - Published: 2/24/2023 - S. Carter, J. O'Neill, Harry P., Hermione G. - Complete
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: 27 - Words: 223,626 - Reviews: 811 - Favs: 2,186 - Follows: 2,698 - Updated: 12/30/2024 - Published: 9/29/2021 - S. Carter, D. Jackson, J. O'Neill, OC
Gateway to infinity by nightreddust reviews
Power isn't just a prize to be won; it's the foundation of empires. I crave it in a way that goes beyond kingdoms, beyond worlds. I will be the architect of a multiverse forged in my image. An empire of infinity, one that stretches across realities, bending all existence to my will. When all roads lead to me, my name will be more than history; it will be eternity.
Crossover - Stargate: SG-1 & Harry Potter - Rated: M - English - Chapters: 14 - Words: 49,903 - Reviews: 41 - Favs: 65 - Follows: 80 - Updated: 12/28/2024 - Published: 10/12/2024
Stargate Reclamation by Gallanox reviews
Long ago, there was a race that ruled the stars. Thinking themselves invincible, they stepped into a war against an enemy they thought to be inferior, but this proved to be their undoing. They lost the war, and this once mighty race dwindled to nothing, that is, until one small boy in his cupboard under the stairs started his journey to reclaim the stars in the name of his people
Crossover - Stargate: SG-1 & Harry Potter - Rated: M - English - Adventure/Sci-Fi - Chapters: 4 - Words: 31,256 - Reviews: 30 - Favs: 192 - Follows: 313 - Updated: 12/27/2024 - Published: 11/26/2024 - Harry P., Fleur D., Salazar S., Daphne G.
Destiny's Child Version 4 by andrewjameswilliams reviews
After an encounter with hostile Klingons and a spatial anomaly the Federation starship Resolution is transported into the Stargate universe. Trouble ensues as they have to learn how to survive in this new reality, build new friendships and alliances and maybe, just maybe, find a way home.
Crossover - StarTrek: Other & Stargate: SG-1 - Rated: T - English - Adventure/Sci-Fi - Chapters: 4 - Words: 21,714 - Reviews: 36 - Favs: 145 - Follows: 191 - Updated: 12/27/2024 - Published: 9/18/2022 - S. Carter, D. Jackson, J. O'Neill, Teal'c
Stargate SG-Kat: First Contact by ElohimEditor reviews
Following Ba'al's execution, a new Goa'uld has emerged to threaten the entire galaxy. With its traditional alliances somewhat fragile, and the Wraith and Lucian Alliance on the prowl, the SGC must seek new allies.
Crossover - Stargate: SG-1 & SWAT Kats - Rated: T - English - Adventure/Sci-Fi - Chapters: 5 - Words: 27,313 - Reviews: 2 - Favs: 7 - Follows: 8 - Updated: 12/27/2024 - Published: 11/17/2023
Robotech: The Stargate Saga: Otherworld by andrewjameswilliams reviews
AU set in the Stargate Saga fusion universe. What might have happened if they had discovered the Stargate a few years after the arrival of the SDF 1 on Earth and how would it effect the events of the First Robotech War?
Crossover - Stargate: SG-1 & Robotech/Macross - Rated: T - English - Sci-Fi/Adventure - Chapters: 8 - Words: 37,994 - Reviews: 57 - Favs: 95 - Follows: 123 - Updated: 12/25/2024 - Published: 9/5/2024 - J. O'Neill, Charlie O., Lisa/Misa, Rick/Hikaru
SG Universes at War by celian Cogitore reviews
In a parallel universe, the Tau'ri faces a bloody war between the Systems Lords Anubis and Apophis. The situation is affected by the arrival of a strange character: 'Gilgamesh, the King of Heroes'. The Golden King is looking for Hakuno Kishinami (F) his 'Master'... and woe to the one who will cross his way, that they are false gods or whole aliens civilizations.
Crossover - Stargate: SG-1 & Fate/stay night - Rated: T - English - Sci-Fi/Supernatural - Chapters: 30 - Words: 144,664 - Reviews: 186 - Favs: 373 - Follows: 458 - Updated: 12/23/2024 - Published: 10/12/2022 - [Hakuno K., Gilgamesh] J. O'Neill, Ba'al
Aim High: A Stargate Tale by lateVMlover reviews
Buffy is the daughter of Jack and Joyce O'Neill when his son Charlie dies. This is a total reworking of BTVS season 1 as Buffy O'Neill is not exactly the same person Hank Summers would've raised. How does Sunnydale handle not having her there?
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: T - English - Family/Hurt/Comfort - Chapters: 10 - Words: 36,483 - Reviews: 48 - Favs: 56 - Follows: 86 - Updated: 12/22/2024 - Published: 9/8/2024
Ship of the Line: Girl in the Middle by Jacob M. Bosch reviews
When the children assimilated by the Borg on Halloween are put in danger, Willow does whatever it takes to protect them.
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: T - English - Adventure/Sci-Fi - Chapters: 1 - Words: 5,033 - Reviews: 2 - Favs: 9 - Follows: 16 - Published: 12/22/2024 - Angel, Buffy S., R. Giles, Willow R.
Destiny's Children by TheSparrowHawke reviews
The Testaments of the Ancestors are clear. Life Began Out There, on Earth. Separated by the distance of a hundred galaxies and the void between them, cut off by thousands of years of time, we survived, thrived, and now we have found our way home. The only question is, will they accept our help, or are the Children destined to overthrow their fathers?
Crossover - Stargate: SG-1 & Stargate: Universe - Rated: T - English - Adventure/Sci-Fi - Chapters: 1 - Words: 2,057 - Reviews: 2 - Favs: 2 - Follows: 8 - Published: 12/13/2024 - S. Carter, J. O'Neill, OC
SGS 08 Enigma by Abnormal Newt
Currently unfinished! Started this ages ago. Figured if I post it, I'll feel guilty until I finish it. Helen Magnus makes a trip to Cheyenne Mountain.
Crossover - Stargate: SG-1 & Sanctuary - Rated: T - English - Friendship/Adventure - Chapters: 6 - Words: 8,856 - Favs: 1 - Follows: 2 - Published: 12/11/2024 - S. Carter, J. Fraiser, Helen M.
Star King by overlord susanoo reviews
In a new universe far far away full of aliens and combat Danny is now trying to build an empire. There are many that would stand in his way from this universe and beyond. In the end he will strive to stand above all of them.
Crossover - Stargate: SG-1 & Danny Phantom - Rated: T - English - Chapters: 45 - Words: 165,191 - Reviews: 16 - Favs: 144 - Follows: 128 - Updated: 12/9/2024 - Published: 5/10/2019 - Danny F. - Complete
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