Stargate: Atlantis Crossovers
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Fusion v Fusion by skca54 reviews
A rogue Fusion is operating in the Pegasus galaxy. They have come from a parallel universe and are causing havoc everywhere they go. Atlantis and the SGC have had no success stopping them and they need help. Can Hit Girl and Kick-Ass, along with their team, capture themselves? A Stargate/Kick-Ass cross-over. Based on my Fusion Universe.
Crossover - Stargate: Atlantis & Kick-Ass - Rated: T - English - Sci-Fi/Adventure - Chapters: 4 - Words: 8,169 - Reviews: 7 - Favs: 2 - Follows: 3 - Updated: 6h - Published: 8/23 - Rodney M., John S., Dave L./Kick-Ass, Mindy M./Hit Girl
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: 6 - Words: 37,880 - Reviews: 13 - Favs: 5 - Follows: 16 - Updated: 8/24 - Published: 7/22
Holding The Light Against The Shadow Of Pegause by demon unicron reviews
The last of the High Guard find themselves in a different galaxy, and soon in the middle of a conflict that seems the realm of science fiction. Faced with no apparent method to return to their own reality and time, can the High Guard hold the line against the odds the universe has thrown at them.
Crossover - Andromeda & Stargate: Atlantis - Rated: T - English - Sci-Fi - Chapters: 3 - Words: 7,386 - Reviews: 9 - Favs: 11 - Follows: 23 - Updated: 8/24 - Published: 6/25
Tara Sheppard by fmfan1980 reviews
What if Tara was Major John Sheppard's half sister? Just a thought I had while writing one of my chapters. Takes place after the Siege of Atlantis, and during 'Seeing Red' of BtVS. I know timelines don't match which is why this is AU. *Edit 23/08/2015: Thanks to Bucio's review. I realized I made the glaring error of not including Dawn at the end of Chapter 5. She's included now.*
Crossover - Buffy: The Vampire Slayer & Stargate: Atlantis - Rated: T - English - Family/Sci-Fi - Chapters: 6 - Words: 23,199 - Reviews: 28 - Favs: 25 - Follows: 40 - Updated: 8/24 - Published: 7/11 - Tara M., John S.
Stargate Command by Lordheaven reviews
AU/DS9/TNG/SGC: The war with the Dominion takes a turn for the worse. The sudden cry for help from the Q Continuum diverts the Federation's attention to investigate a mystery buried deep into Earth's past: a secret so dangerous that it divides the Earth in two and reshapes the galaxy.
Crossover - StarTrek: The Next Generation & Stargate: Atlantis - Rated: T - English - Sci-Fi/Mystery - Chapters: 18 - Words: 124,950 - Reviews: 173 - Favs: 108 - Follows: 152 - Updated: 8/19 - Published: 2/5/2013
A Slayer's New Life by KillerWidow reviews
buffy dies after the battle of Sunnydale, Daniel Jackson who is ascended then offers her a new life in another universe, and she accepts. she is taken to the Pegasus Galaxy in the SGA universe. she arrives 150 years before the expedition. during which time she discovers that she barely ages and heals even faster. she runs into trouble, and the SGA-1 team...
Crossover - Buffy: The Vampire Slayer & Stargate: Atlantis - Rated: T - English - Adventure/Family - Chapters: 5 - Words: 3,949 - Reviews: 7 - Favs: 23 - Follows: 45 - Updated: 8/17 - Published: 12/29/2014 - Buffy S., Ronon D.
Stargate: La Naissance d'un Empire by hyprion38 reviews
L'histoire commence au début de la saison 8 de SG1 et au début de la saison 1 de SGA, il s'agit d'un crossover entre les deux séries mais il est possible que d'autres séries et films de SF viennent s'ajouter à l'histoire. Univers Alternatif. Réécriture de SG1 et de SGA à partir de 01x08 de SG1 et du 01x01 de SGA. Je mets un rating T pour plus de sécurité.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - French - Sci-Fi - Chapters: 7 - Words: 26,043 - Reviews: 5 - Favs: 4 - Follows: 5 - Updated: 8/10 - Published: 2/22 - S. Carter, J. O'Neill, Elizabeth W., John S.
Stargate : Fanatus by username Sperglord reviews
A Lantean warships, badly damaged, crew has been in stasis for 10000 years but after the ships AI revives the captain from stasis and heals the deterioration of his cells he has a vengeance to enact of the wraith and it was high times his people rose to their former glory.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Chapters: 1 - Words: 554 - Reviews: 2 - Favs: 7 - Follows: 11 - Published: 8/9
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: 28 - Words: 90,882 - Reviews: 76 - Favs: 8 - Follows: 26 - Updated: 8/7 - Published: 4/12/2013 - S. Carter, J. O'Neill, Elizabeth W., John S. - Complete
Reassignment and Other Really Wild Things by Evil Asch reviews
Spin Off from the Expert Testimony series. Rodney has an idea, Sheppard has an objection, Carter has a headache, Jack has a fit and someone has an adventure.
Crossover - Highlander & Stargate: Atlantis - Rated: T - English - Angst/Adventure - Chapters: 17 - Words: 14,889 - Reviews: 1 - Favs: 1 - Follows: 9 - Updated: 8/5 - Published: 11/30/2013
Going Home by twinkiesnacker reviews
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 - Reviews: 3 - Favs: 2 - Published: 8/2
Heir to the Mantle by Feargon-LP reviews
A single moment can change everything... A child's imagination knows no bounds... The cosmos should prepare... The Mantle will stand again...
Crossover - Harry Potter & Stargate: Atlantis - Rated: T - English - Adventure/Sci-Fi - Chapters: 9 - Words: 10,504 - Reviews: 171 - Favs: 429 - Follows: 664 - Updated: 8/1 - Published: 3/8/2014 - Harry P., OC
When Needed by Fuyu-ookami reviews
Something strange happened at the end of the war. Hogan and his men vanish. A mystery that won't be solved for over 60 years. And what does it have to do with an artifact. Please Review!
Crossover - Hogan's Heroes & Stargate: Atlantis - Rated: T - English - Adventure - Chapters: 3 - Words: 3,825 - Reviews: 8 - Favs: 6 - Follows: 12 - Updated: 7/31 - Published: 8/18/2012
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.
Last Ancient by runick4 reviews
On that Halloween night, Harry saves his twin, damaging his magic; Left on Privet drive, he grows up on his own; When he is eight, he starts doing freaky things that he can't understand; Discovering Merlin's hologram at Glastonbury Tor gives him a real family, and changes the fate of the Galaxy; Squib!Harry, Telekinetic!Harry, Pic is basic model of Hermes class ship
Crossover - Harry Potter & Stargate: Atlantis - Rated: T - English - Adventure/Drama - Chapters: 26 - Words: 223,392 - Reviews: 1027 - Favs: 1,831 - Follows: 2,216 - Updated: 7/28 - Published: 5/23/2013 - Harry P.
mass effect Atlantis by HENKLDORE reviews
the multi verse theory is proven to contain every possibility including a completely new universe Atlantis knows nothing about. Atlantis finds a new planet but the Stargate sends them to a new universe one without star gates or anything they will recognise. i had to downgrade and enhance certain technology but I'm keeping it as close to the technology of both sides as possible.
Crossover - Stargate: Atlantis & Mass Effect - Rated: K+ - English - Sci-Fi/Adventure - Chapters: 5 - Words: 5,185 - Reviews: 11 - Favs: 9 - Follows: 16 - Updated: 7/23 - Published: 5/25 - Rodney M., John S., Tali'Zorah, Shepard (M)
The Pea by Amycat8733 reviews
A scientific mission turns into an opportunity for more when the team undergoes a test with a potential trade partner. Gen, adventure, H/C, romance
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Adventure - Chapters: 1 - Words: 3,825 - Reviews: 3 - Favs: 1 - Follows: 2 - Published: 7/23 - [C. Mitchell, John S.]
Shep'Neill & the Stories of Sailing Ships by McKay Rulez reviews
Family chaos! - John's Bug DNA sets into motion the revelation of a past event that brings to light connections that are deeper then friendship. Ships: Jack/John (Family ship), Jack/Jenny, Vala/Rodney, Sam/Rodney (One sided), Sam/John
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Drama/Family - Chapters: 11 - Words: 10,651 - Reviews: 22 - Favs: 4 - Follows: 7 - Updated: 7/23 - Published: 6/7 - J. O'Neill, Rodney M., John S., S. Carter/Sam
Ed Atlantis by DoctorEd17
The Eds not only go to the Stargate: Atlantis universe. They also get turned into adults! AU. Please review. Rated T to be safe.
Crossover - Ed, Edd n Eddy & Stargate: Atlantis - Rated: T - English - Chapters: 1 - Words: 5,177 - Favs: 1 - Follows: 1 - Published: 7/19
Stargate Unversal Atlantis (SGUA) by DoctorEd17 reviews
AU. The Destiny goes back in time to the Pegasus galaxy! How will it end? T to be safe.
Crossover - Stargate: Atlantis & Stargate: Universe - Rated: T - English - Chapters: 1 - Words: 3,356 - Reviews: 3 - Favs: 11 - Follows: 15 - Published: 7/16
Rules of Attachment Theory by McKay Rulez
Sam the whale returns to visit her favourite human, Rodney. Jack and Sam (the human) get to meet Sam (the whale). Jack grows concerned McKay and Carter may adopt the whale as a pet, and everyone knowns you can't fit a space whale in Jack's small pond. Ships: Sam/Rodney - Also some Rodney/Sam (Whale) jealousy
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: K - English - Friendship/Romance - Chapters: 1 - Words: 1,883 - Favs: 1 - Follows: 1 - Published: 7/15 - S. Carter, J. O'Neill, Rodney M., S. Carter/Sam - Complete
The Broken Bridge by Aenthir reviews
Mass Effect/Atlantis/SG-1. The ME galaxy is under siege by the Reapers, and the asari have discovered that the ancient artifact they've kept hidden away for centuries is a gateway that predates the Protheans. Will the gateway lead to new allies or more enemies for the already beleaguered Citadel races? Femshep/Liara, Garrus/Tali, Daniel J./?, Carter, Sheppard/Weir, McKay and more!
Crossover - Stargate: Atlantis & Mass Effect - Rated: T - English - Adventure/Romance - Chapters: 5 - Words: 15,382 - Reviews: 67 - Favs: 140 - Follows: 250 - Updated: 7/14 - Published: 2/21/2014 - Rodney M., Shepard (F), Liara T'Soni, OC
A 9th Chevron code? by carlocker reviews
what if the 9th chevron sent people to an alternate reality set in a AU
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Sci-Fi/Parody - Chapters: 2 - Words: 732 - Reviews: 3 - Favs: 4 - Follows: 4 - Updated: 7/11 - Published: 6/1 - S. Carter, D. Jackson
SG13: Intro to Bad Luck by StargateNerd reviews
The SGC's bad luck team consists of Major Tyler Reece, sharpshooting worrywart, Lt. Kira Feldin, self-proclaimed ninja and otaku, and Muki Huzanaka, an alien teen obsessed with striped sweatshirts and pudding. This is their tale, the tale of SG-13.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Adventure - Chapters: 4 - Words: 11,811 - Reviews: 7 - Follows: 2 - Updated: 7/11 - Published: 7/8/2009
A Name for the Galaxy (drabbles) by jadetarsier
Candy bars and galactic names...
Crossover - Star Wars & Stargate: Atlantis - Rated: K - English - Humor - Chapters: 1 - Words: 211 - Published: 7/8 - Rodney M., John S. - Complete
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