Stargate: SG-1 Crossovers
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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: 53 - Favs: 90 - Follows: 119 - Updated: 12/25 - Published: 9/5 - J. O'Neill, Charlie O., Lisa/Misa, Rick/Hikaru
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: 13 - Words: 43,653 - Reviews: 37 - Favs: 55 - Follows: 71 - Updated: 12/25 - Published: 10/12
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: 369 - Follows: 454 - Updated: 12/23 - 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: 47 - Favs: 52 - Follows: 84 - Updated: 12/22 - Published: 9/8
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: 7 - Follows: 11 - Published: 12/22 - Angel, Buffy S., R. Giles, Willow R.
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: 170 - Words: 1,162,184 - Reviews: 456 - Favs: 206 - Follows: 225 - Updated: 12/20 - 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: 92 - Words: 924,689 - Reviews: 2 - Favs: 3 - Follows: 3 - Updated: 12/18 - Published: 12/4 - Guinan, J. Picard, D. Jackson, Gen. Landry - Complete
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 - S. Carter, J. O'Neill, OC
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: 57 - Words: 294,161 - Reviews: 933 - Favs: 473 - Follows: 555 - Updated: 12/13 - Published: 3/19/2017 - J. O'Neill, W. Adama
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 - S. Carter, J. Fraiser, Helen M.
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: 3 - Words: 26,336 - Reviews: 21 - Favs: 152 - Follows: 257 - Updated: 12/11 - Published: 11/26 - Harry P., Fleur D., Salazar S., Daphne G.
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: 143 - Follows: 128 - Updated: 12/9 - Published: 5/10/2019 - Danny F. - Complete
The Road to Armaggeddon by Chris Alexander the Bearded reviews
A stargate: SG-1 - Battlestar Galactica :2003 crossover in our current timeline. After years of peace and prosperity in the Galaxy achieved by the Stargate Command, several factions decide to join efforts and put an end to the Tau'ri supremacy.
Crossover - Stargate: SG-1 & Battlestar Galactica: 2003 - Rated: K - English - Sci-Fi/Adventure - Chapters: 7 - Words: 31,069 - Reviews: 34 - Favs: 44 - Follows: 53 - Updated: 12/8 - Published: 11/7/2023
MoonGate by Antonio Cabanas reviews
When two members of an SG team end in the Moon Palace things start to go sideways...
Crossover - Sailor Moon & Stargate: SG-1 - Rated: K+ - English - Adventure - Chapters: 5 - Words: 12,536 - Reviews: 11 - Favs: 37 - Follows: 46 - Updated: 12/7 - Published: 2/3/2023 - Haruka T./Sailor Uranus, Rei H./Raye/Sailor Mars, S. Carter, J. O'Neill
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: 15 - Words: 115,105 - Reviews: 180 - Favs: 874 - Follows: 1,117 - Updated: 12/5 - Published: 8/2/2022 - Harry P., Nicolas F.
Stargate Atlantis Trading Grounds I: Birth Of The SGA by BazzCatgirl03 reviews
After surviving a fatal assault at his apartment, Daniel Jackson is transferred to the SGA, under the military command. And of General Hank Landry, deciding this is the chance to start his life over. As he and Teal'C, after the cruel and cold blooded betrayal the year before. Of their team, they leave the SGC and start a new life. Alternate Forever In A Day main character bashing.
Crossover - Stargate: SG-1 & StarTrek: The Next Generation - Rated: T - English - Sci-Fi/Angst - Chapters: 175 - Words: 1,847,942 - Reviews: 7 - Favs: 13 - Follows: 19 - Updated: 12/4 - Published: 1/23 - J. Picard, D. Jackson, Teal'c, Gen. Landry - Complete
Valyrian Steel, Obsidian and Plasma by vardax reviews
a StarGate on planetos
Crossover - Stargate: SG-1 & Game of Thrones - Rated: T - English - Sci-Fi/Adventure - Chapters: 7 - Words: 17,271 - Reviews: 24 - Favs: 37 - Follows: 62 - Updated: 11/28 - Published: 5/8
Stargate: Archaic Stratagem V2 by Red Leader reviews
After Charly Burke overload the weapon she created, she caused a tear in the fabric of time and space. She found herself in another universe she's not familiar with and found her doppelganger. Charlotte Burke Sheppard husband has been kidnapped by Cerberus and she joins David Sheppard, Chaya's grandson to search for Anakin John Sheppard. Stargate, Orville and Mass Effect
Crossover - Stargate: SG-1 & Orville - Rated: K+ - English - Romance/Sci-Fi - Chapters: 27 - Words: 84,168 - Reviews: 2 - Favs: 14 - Follows: 15 - Updated: 11/25 - Published: 9/23
EVoNet Forward by Night Raydes reviews
The world was changing but mage couldn't see the need to change too. They forced Harry away in fear, banished from the magical world with his magic sealed away. He had a dream too big for the 'light' or the 'dark' wishing to bring magic to all who had a wish for something more. Though, his power was bound; he could see the way forward beyond his troubles.
Crossover - Harry Potter & Stargate: SG-1 - Rated: M - English - Sci-Fi/Fantasy - Chapters: 28 - Words: 107,577 - Reviews: 155 - Favs: 1,041 - Follows: 1,276 - Updated: 11/25 - Published: 4/20/2020 - [Harry P., Daphne G.] [Draco M., Astoria G.]
The Chosen One, A New Beginning by Alone-again-always reviews
Ron and Tara have no idea what A new universe has installed for them, but at least they have the chance to start over. we just have too wait and see. R&R
Crossover - Kim Possible & Stargate: SG-1 - Rated: T - English - Sci-Fi/Drama - Chapters: 23 - Words: 38,958 - Reviews: 4 - Favs: 33 - Follows: 35 - Updated: 11/20 - Published: 4/23 - [Ron S., Tara, Bonnie R., Kim P.]
Humanité by Audragon reviews
La mort était douloureuse. Et lorsqu'on était Maître de la Mort, elle était aussi pleine de révélations. Mais lorsqu'on l'était, ce passage n'était que le début, le début vers une nouvelle existence dans laquelle la Mort elle même devenait une protectrice offrant une voie d'accomplissement pour celui qu'elle avait choisi...
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - French - Fantasy/Sci-Fi - Chapters: 39 - Words: 311,390 - Reviews: 358 - Favs: 341 - Follows: 349 - Updated: 11/5 - Published: 1/10/2023 - C. Kawalsky, Thor, Harry P.
Space Wizards: Alien Legacy by yoden reviews
Book 2: Ending a civil war before coming of age was supposed to be the hard part. Leaving Earth behind, the crew of the Requirement had signed up for a grand adventure across the galaxy; exploring strange and wonderful worlds as they uncovered the secrets left behind by the shipbuilders ... Unfortunately, the rest of the galaxy decided to throw a wrench in the gears.
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - English - Sci-Fi/Drama - Chapters: 2 - Words: 15,149 - Reviews: 15 - Favs: 77 - Follows: 123 - Updated: 10/27 - Published: 9/22 - Harry P., Ginny W., Terry B., Zacharias S.
Changing the Rules by Lerris reviews
The Rowan surviving the accident that took her parents was a miracle. Her falling between universes to end up in front of the USS Enterprise was another. Her catching the attention of Q, well that was something else entirely. There were a lot of problems with his plan, not the least of which is he would have to change the rules. Rowan/Trek/Stargate/Doctor Who/Multicross
Crossover - StarTrek: The Next Generation & Stargate: SG-1 - Rated: T - English - Adventure/Drama - Chapters: 65 - Words: 638,988 - Reviews: 48 - Favs: 20 - Follows: 20 - Updated: 10/26 - Published: 10/4 - W. Riker, D. Troi
Empires Unite! Milky Way by SapphireDawn11709 reviews
When the SGC Destroys the Quantum Mirror after the incident were Doctor Carter and Major Kawasaki appear in Area 51a ripple was sent across the multiverse. When this ripple hit a Forerunner portal chaos ensues as fleets from three universe appear in the Milky Way. Starship Troopers, Mass Effect, Halo Stargate
Crossover - Stargate: SG-1 & Halo - Rated: M - English - Sci-Fi - Chapters: 8 - Words: 31,388 - Reviews: 104 - Favs: 284 - Follows: 361 - Updated: 10/26 - Published: 6/24/2019 - T. Lasky, S. Carter
Stargate: The Last Ship by Red Leader reviews
Stargate/DS9/TNG/Voyager/The Last Ship crossover. Ba'al ascended to a higher plane of existence after escaping capture, he descended into a universe and took control of the Dominion to take back what he lost.
Crossover - Stargate: SG-1 & StarTrek: Deep Space Nine - Rated: K - English - Sci-Fi - Chapters: 15 - Words: 44,814 - Reviews: 10 - Favs: 11 - Follows: 14 - Updated: 10/22 - Published: 2/2
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