Stargate: SG-1 Crossovers
Filters
2.1K | Page 1 2 3 4 11 .. Last Next »

Stargate Olympus by NorJC reviews
A few years after the disclosure of the Stargate program to the people of Earth, a powerful new Earth cruiser transports SG-1 to assist the planet Galar when a massive alien spacecraft suddenly appears out of nowhere near the Galaran homeworld. This story also has a few tidbits from the Bourne movie series.
Crossover - Stargate: SG-1 & Battlestar Galactica: 2003 - Rated: K+ - English - Sci-Fi/Adventure - Chapters: 2 - Words: 4,494 - Reviews: 20 - Favs: 37 - Follows: 71 - Updated: 40m - Published: 7/30 - D. Jackson, J. Hailey, S. Valerii/Boomer, H. Cain
An Extraordinary Meeting by fmfan1980 reviews
Willow from Sunnydale arrives at the SGC under extraordinary circumstances and goes on amazing interstellar, and intergalactic, adventures with the gang from the SGC. (This is a SG1 heavy story with some elements of BtVS and BSG:2003). Re-edits (28/07/2015): Slight re-edit on Chapter Two.
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: T - English - Sci-Fi/Adventure - Chapters: 140 - Words: 1,005,988 - Reviews: 650 - Favs: 174 - Follows: 245 - Updated: 10h - Published: 1/26/2014 - [Faith L., Willow R.]
The Aftermath by fmfan1980 reviews
Based in the alternate reality visited by Captain Willow Rosenberg of SG1 in An Extraordinary Meeting (Chapter 61 to Chapter 64), this is just the aftermath of the events in that chapter.
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: T - English - Sci-Fi - Chapters: 52 - Words: 158,370 - Reviews: 159 - Favs: 48 - Follows: 80 - Updated: 11h - Published: 9/19/2014 - [Willow R., Tara M.]
Born into Darkness by fmfan1980 reviews
Something I thought about while writing Chapter 129 of AEM. Faith was looking at a reality where she was beaten by Buffy during their fight before the ascension. Faith saw Buffy feed her alternate self to Angel to save him from a poison before she left. This is the story of the alternate Faith who survived; along with a revelation that one member of SG-1 will have to face.
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: T - English - Sci-Fi/Drama - Chapters: 12 - Words: 65,406 - Reviews: 48 - Favs: 36 - Follows: 56 - Updated: 11h - Published: 6/9 - Faith L., S. Carter
Going Home by twinkiesnacker
A group of Tok'ra, stranded in the Pegasus Galaxy, make their way home with the help of allies of their Milky Way brethren. However, a danger lurks on the way there! Crossover between Stargate Atlantis, Stargate SG-1, and the fanfilm Lost Colony.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Drama/Adventure - Chapters: 1 - Words: 3,666 - Published: 14h
Brother's Betrayal by Dave19941000 reviews
A small stretch of the truth by an enemy long thought gone leads to a clash of worlds. With Earth unwilling to let an attempted invasion slide and the Colonials having lost too much blood to back down, it seems worlds burning is inevitable. Just as planned.
Crossover - Stargate: SG-1 & Battlestar Galactica: 2003 - Rated: T - English - Sci-Fi - Chapters: 26 - Words: 115,507 - Reviews: 217 - Favs: 197 - Follows: 318 - Updated: 21h - Published: 8/18/2014
Midnight Blue by Amelia E. Adler reviews
Alice has joined the Air Force because she wanted to follow into her father's footsteps. She did not expect to wind up as a space fighter pilot aboard a battlecruiser, traveling all over the galaxy. Special in many ways, she now has to overcome her own insecurities if she wants to keep pace with the demands of the job... OC story with no AU (should fit in with the canon).
Crossover - Stargate: Atlantis & Stargate: SG-1 - Rated: T - English - Sci-Fi - Chapters: 3 - Words: 14,595 - Reviews: 2 - Follows: 5 - Updated: 8/1 - Published: 7/22
An Unnatural Scent by MegKF reviews
An unexpected reunion between the Scoobies and the Fang gang reveals something wrong with Xander.
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: T - English - Chapters: 23 - Words: 21,948 - Reviews: 90 - Favs: 134 - Follows: 228 - Updated: 8/1 - Published: 2/20/2009
Electus Unum by RebelDroideka reviews
When Nathan Potter's twin brother was entered into the Tri-Wizard Tournament, things quickly spiraled out of control. Now, Voldemort's reign of terror can only be ended by one man; but they have to convince him that they are worth saving first... Word Count to date: 14,421; Rated T for language.
Crossover - Harry Potter & Stargate: SG-1 - Rated: T - English - Chapters: 16 - Words: 15,128 - Reviews: 100 - Favs: 285 - Follows: 484 - Updated: 8/1 - Published: 3/21 - Harry P., Daphne G.
Misunderstandings by Madd Madds
Jordan and the Major attend a conference in America to learn about the Stargate Program leaving Tory to her own devices back in the UK. But when Tory reads something she shouldn't the SGC is thrown in chaos at her sudden and unexpected arrival. This Story is part of my HTL-TARDIS series and those should be read first in order for this to make sense. Rated T for swearing.
Crossover - Doctor Who & Stargate: SG-1 - Rated: T - English - Adventure/Humor - Chapters: 1 - Words: 3,764 - Favs: 1 - Follows: 2 - Published: 8/1
Gateway to Change by Barefoot XO reviews
Hunting for a demon in Washington DC leads Riley Finn into a foothold situation very different than he's ever experienced before. Flung into a world of ray guns and aliens, Finn will be remade as the leader of SG-3. World 703 in the Crisis of Infinite Scoobies.
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: T - English - Adventure/Romance - Chapters: 3 - Words: 4,347 - Reviews: 7 - Favs: 19 - Follows: 29 - Updated: 8/1 - Published: 7/3 - [Riley F., S. Carter]
Divisions of Self by Barefoot XO reviews
Janus is a Roman God representing division of self, according to Giles. What if he was so much more, an ascended Tok'ra who desperately wants to help his people? How would that affect Halloween? Especially considering a special costume Ethan has ready...
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: T - English - Adventure/Humor - Chapters: 8 - Words: 9,795 - Reviews: 45 - Favs: 132 - Follows: 202 - Updated: 8/1 - Published: 4/25 - Xander H., Braítac, Egeria
2012 by ORBSyndicate reviews
In a crossover of vast proportions, the year 2012 brings many worlds together. It will be the most amazing crossover of all time, taking from many science-fiction and mysterious supernatural shows, books, and other worlds. With other stuff thrown in just for fun. 2012 will change the two main crossovers every few days, so don't expect it to stay in one spot.
Crossover - Stargate: SG-1 & Avatar: Last Airbender - Rated: T - English - Adventure/Sci-Fi - Chapters: 9 - Words: 73,949 - Reviews: 11 - Favs: 9 - Follows: 20 - Updated: 7/31 - Published: 5/5
Silver Creek by Lizbug reviews
Sequel to my story Instinct. This story needs a Beta so if anyone wants to volunteer please pm me. Concrit welcome. It is Dean's first hunt since the skinwalker attack. Something has its hunting grounds in Silver Creek, Minnesota and he and his dad are there to stop it. How will his new circumstance affect Dean? Crossover with Stargate SG-1.
Crossover - Stargate: SG-1 & Supernatural - Rated: T - English - Chapters: 10 - Words: 11,541 - Reviews: 27 - Favs: 5 - Follows: 21 - Updated: 7/31 - Published: 4/14 - J. O'Neill, Dean W., John W., OC
The Search for Victory by Morena Evensong reviews
During the hunt for Hydra, SGC operations are stalled. But the Ori's armies are still coming and Earth isn't any closer to coming up with anything that can stop them. Frustrated, Daniel takes a vacation and accidentally uncovers a clue to what could be an Ancient weapon. Against protocol, against orders, he and his friends set out on a desperate quest to find a way to save Earth.
Crossover - Stargate: SG-1 & Avengers - Rated: K+ - English - Sci-Fi/Adventure - Chapters: 31 - Words: 208,078 - Reviews: 332 - Favs: 200 - Follows: 284 - Updated: 7/30 - Published: 10/6/2014 - D. Jackson, Captain America/Steve R., Black Widow/Natasha R., Hawkeye/Clint B.
Contact at Kobol by wilkins75 reviews
The scrolls tell that 13 tribes left the birthplace of humanity on Kobol, 12 went one way and the other Earth went another only to lose all contact with their cousins. It is written that one day they would reunite but when they Earth meets their cousins it is not what they expected and it would cost both sides in blood. (Stargate SG1/Battlestar Galactica)
Crossover - Stargate: SG-1 & Battlestar Galactica: 2003 - Rated: T - English - Adventure - Chapters: 11 - Words: 54,082 - Reviews: 283 - Favs: 284 - Follows: 429 - Updated: 7/30 - Published: 3/20
Night Begins Here by Simlead reviews
'They can handle aliens. They can handle death. But can they handle The Night' A crossover between SGA and SG-1, set at the very end of Atlantis, after they've returned to earth. Sparky, Sam/Jack, and minor hints of other pairings. First in a series. I own nothing.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Romance/Adventure - Chapters: 24 - Words: 81,588 - Reviews: 71 - Favs: 8 - Follows: 26 - Updated: 7/30 - Published: 4/12/2013 - S. Carter, J. O'Neill, Elizabeth W., John S.
New Team by LE McMurray reviews
With the other members of SG1 moving on, Daniel now has a new opportunity. A new job, a new team and a new secret organisation.
Crossover - Stargate: SG-1 & Agents of S.H.I.E.L.D. - Rated: K - English - Friendship - Chapters: 3 - Words: 4,199 - Reviews: 16 - Favs: 35 - Follows: 48 - Updated: 7/30 - Published: 11/1/2014 - Complete
Ascension by MCL3pra
Hey all! This is the prologue and first chapter of my story Stargate: Ascension. The story takes place three years after the events of SGU's final episode. SG-1 is hard at work trying to find a way to bring Destiny home. I will be adding more chapters in the future. Enjoy!
Crossover - Stargate: SG-1 & Stargate: Universe - Rated: K - English - Chapters: 1 - Words: 628 - Follows: 2 - Published: 7/29
Into the Wild Blue Yonder by Spirit Seer reviews
"This is all Tony's fault," America thought as he looked around the spaceship. After all, the alien standing in front of him looked exactly like Tony, even if he claimed to be an Asgard named Thor. Then three of his citizens and an unknown fourth arrived, all dressed in Air Force uniforms... AU
Crossover - Stargate: SG-1 & Hetalia - Axis Powers - Rated: T - English - Adventure/Humor - Chapters: 15 - Words: 72,974 - Reviews: 29 - Favs: 53 - Follows: 64 - Updated: 7/29 - Published: 2/8/2014
Daughter by guardianranger reviews
Tara, daughter to John Sheppard meets her father and the rest of the Atlantis team. Also goes to live him for awhile on Atlantis,also has special abilities.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: K+ - English - Supernatural/Family - Chapters: 15 - Words: 6,326 - Reviews: 3 - Favs: 5 - Follows: 8 - Updated: 7/28 - Published: 8/12/2009 - D. Jackson, OC, John S.
Stargate - The Four Elements by MDAM-FASEGold reviews
James Anders is an ex-RAF officer that joins the SGC after he is honourably discharged from military service in Afghanistan, after the Stargate spontaneously activates. His team SG7, with the help of General Carter, must now help Korra defeat a threat that orgionates close to home. The Anomaly Series (R2)
Crossover - Stargate: SG-1 & Legend of Korra - Rated: T - English - Sci-Fi/Adventure - Chapters: 14 - Words: 25,131 - Reviews: 8 - Favs: 5 - Follows: 9 - Updated: 7/26 - Published: 12/26/2014 - S. Carter, OC, Korra, Mako
All's Fair in Love and Fae by Alobear
Bo and Kenzi get a case from two men with a mystery on their hands.
Crossover - Stargate: SG-1 & Lost Girl - Rated: T - English - Adventure/Supernatural - Chapters: 1 - Words: 6,554 - Published: 7/26 - D. Jackson, J. O'Neill, Bo D., Kenzi - Complete
Tok'Ra Magi by Mystic Sharman reviews
Different start to Magical Symbioses. Where Harry is kicked out of his relative's home. At the start of the summer before his third year. He finds Jahoel the secret glade that he used to runaway to.
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - English - Sci-Fi/Fantasy - Chapters: 1 - Words: 1,104 - Reviews: 6 - Favs: 32 - Follows: 29 - Published: 7/26 - [Harry P., Hermione G.] [S. Carter, Sirius B.]
The Old One by Marcus S. Lazarus reviews
-Seq. to 'TGitT'- Investigating the mystery of 'Doyle', SG-1 arrive in Los Angeles just in time to witness the resurrection of an ancient nightmare.
Crossover - Stargate: SG-1 & Angel - Rated: T - English - Drama/Supernatural - Chapters: 19 - Words: 49,516 - Reviews: 68 - Favs: 24 - Follows: 48 - Updated: 7/25 - Published: 5/26/2014 - [Spike, Vala] D. Jackson, Fred B.
2.1K | Page 1 2 3 4 11 .. Last Next »