Stargate: Atlantis Crossovers
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SG: Saga of the new Alterran Empire: Book 4 Destiny by Malicious World Builder reviews
This is the fourth book in the saga I am writing. I suggest you read the first three before reading this one. With a war raging across Earth between the Alterran Empire and the SEN the stage is set for anything to happen and as old enemies and even older ones return things will happen.
Crossover - Stargate: Atlantis & Stargate: Universe - Rated: T - English - Sci-Fi/Adventure - Chapters: 7 - Words: 18,116 - Reviews: 2 - Favs: 4 - Follows: 8 - Updated: 5/20 - Published: 4/12 - John S., S. Carter/Sam, OC, Col. E. Young
West's world by kiwikid reviews
A series of short stories featuring Donald and Judy West and their adventures in the Pegasus Galaxy as part of the Atlantis team. Features guest appearances from the Robinsons and Dr Smith.
Crossover - Lost In Space & Stargate: Atlantis - Rated: K+ - English - Adventure/Angst - Chapters: 4 - Words: 18,650 - Reviews: 6 - Favs: 1 - Follows: 3 - Updated: 5/17 - Published: 4/2 - Elizabeth W., Ronon D., E. Lorne
The Fifth Race's Reclaimers by Piero217 reviews
The Four Great Races once watched over thousands of worlds… but only one species was destined to inherit their place. Now, as an ancestral enemy rises from the ashes and threatens all life as we know it, humans from two different universes must learn to overcome their differences and stand together to reclaim the Mantle of Responsibility. Set shortly after the events of Spartan Ops
Crossover - Halo & Stargate: Atlantis - Rated: T - English - Sci-Fi/Adventure - Chapters: 22 - Words: 152,419 - Reviews: 216 - Favs: 300 - Follows: 352 - Updated: 5/16 - Published: 6/1/2013 - Master Chief/John-117, C. Halsey, Cortana, John S.
Unexpected by guardianranger reviews
Daniel,John,Cameron,Samantha,Jack and Rodney-meet their kids by accident.There life isn't what to seem to be. A Green light will send the SG-1 and SG-2 back to the past.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: K+ - English - Family - Chapters: 8 - Words: 6,887 - Reviews: 7 - Favs: 6 - Follows: 9 - Updated: 5/16 - Published: 1/2/2011
A Glimmer of Hope by The Hidden Sith reviews
It's been five years since disclosure and the City of Atlantis breathes new life with thousands inhabiting her. When a subspace anomaly propels the city and her stalwart defenders through time and space, they discover a galaxy in turmoil and humanity in peril once again. With no way back, they must establish a new home for humanity and uncover the mystery behind Andromeda. SG/ME
Crossover - Stargate: Atlantis & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 2 - Words: 6,867 - Reviews: 8 - Favs: 55 - Follows: 77 - Published: 5/14
Far From Home by rurousha reviews
Years before Atlantis meets the Wraith, SG-2 meets a stranded alien. Major Griff and John Raythe from season 5 to 7. Canon-compliant.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Adventure/Sci-Fi - Chapters: 17 - Words: 35,911 - Reviews: 27 - Favs: 30 - Follows: 46 - Updated: 5/13 - Published: 6/3/2014 - OC
Stargate : Battle of the Three Galaxies by c.jamous
this is the ending show of the first season of stargate orion , it will be an epic battle , of two movies part, this is part 1 , the next part will introduce the new season of stargate orion , hope you enjoy it and help me give you a good movie
Crossover - Stargate: Atlantis & Avengers - Rated: K - English - Sci-Fi/Adventure - Chapters: 11 - Words: 8,459 - Favs: 1 - Updated: 5/12 - Published: 4/29/2015
Sheppard and Rodney with Breath of the Wild by Eeveeroxas137
Just a very short story on Sheppard and Rodney talking about who they and their friends would be in breath of the wild. Mostly for humor purposes. Just a random idea that popped in my head though.
Crossover - Legend of Zelda & Stargate: Atlantis - Rated: K+ - English - Humor - Chapters: 1 - Words: 387 - Published: 5/12 - Complete
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. *Chapter 30 has been edited.*
Crossover - Buffy: The Vampire Slayer & Stargate: Atlantis - Rated: T - English - Sci-Fi - Chapters: 65 - Words: 223,208 - Reviews: 218 - Favs: 99 - Follows: 177 - Updated: 5/12 - Published: 7/11/2015 - [Tara M., Willow R.] Buffy S., John S.
Voyager Lost by fmfan1980 reviews
Based on an idea that popped into my head last night. Voyager was traveling at Warp, after leaving behind the 37's, when the ship encountered a subspace anomaly that brought it to the Pegasus Galaxy.
Crossover - StarTrek: Voyager & Stargate: Atlantis - Rated: K+ - English - Chapters: 3 - Words: 10,057 - Reviews: 29 - Favs: 68 - Follows: 112 - Updated: 5/12 - Published: 4/2
Father's Day by Schwester Aurelia
Madison Miller explains to her cousin Nemia Sheppard McKay what a "Father's Day" is. Nemmy is, of course, all for it. Kid Fic, Happy fluff, no Angst. :)
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: K - English - Family/Sci-Fi - Chapters: 1 - Words: 4,135 - Published: 5/7 - D. Jackson, J. O'Neill, Rodney M., John S. - Complete
Stargate Galaxie by Effijy reviews
Atlantis est sur la Lune, la CIS réorganise le SGC et l'allience luxienne est de plus en plus redoutable. Comment SG1 va, encore, sauver la Terre et remettre de l'ordre dans la galaxie? Principalement dans l'univers d'SG1. Presque tous les personnages des deux séries sont présents. [Jack&Sam] pre [Daniel&Vala]
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: K - French - Adventure/Sci-Fi - Chapters: 14 - Words: 51,413 - Reviews: 4 - Favs: 2 - Follows: 1 - Updated: 5/1 - Published: 1/7 - [J. O'Neill, S. Carter] C. Mitchell, OC - Complete
Things Could be Worse by Mihas reviews
Dean is working a salt and burn case when he touches an object that teleports him somewhere else. It's a pleasant week in Atlantis until an alarm sounds. When Colonel Sheppard goes to check out the new threat, he is taken aback to discover in the corridors of Atlantis a civilian from Earth pointing a gun at him. For Dean things get much more complicated before getting better..
Crossover - Stargate: Atlantis & Supernatural - Rated: T - English - Adventure/Sci-Fi - Chapters: 7 - Words: 40,898 - Reviews: 57 - Favs: 74 - Follows: 146 - Updated: 5/1 - Published: 6/28/2015
The Pegasus Intervention by kaln7 reviews
With the Covenant war over the UNSC can finally begin exploring the universe, but there first step outside their galaxy could lead them to another enemy that would prefer to feed on them instead of destroying them, can one ship survive in a galaxy teaming with an overwhelming enemy or will they get help from a group of humans who are also exploring the universe themselves.
Crossover - Halo & Stargate: Atlantis - Rated: T - English - Sci-Fi/Adventure - Chapters: 2 - Words: 9,619 - Reviews: 15 - Favs: 37 - Follows: 54 - Updated: 5/1 - Published: 4/7
In a better future by Schwester Aurelia reviews
New Chapter: Double Trouble Part III - the next morning. Glimpses of a future back in Pegasus where nobody dies. Various ficlets and drabbles in the SGA Universe. Mostly John/Rodney, but there will be others as well (Daniel/Jack for example). Sex mentioned, mostly slash, also spanking in some chapters. Enjoy!
Crossover - Stargate: Atlantis & Stargate: SG-1 - Rated: T - English - Humor/Sci-Fi - Chapters: 11 - Words: 19,639 - Reviews: 2 - Favs: 3 - Follows: 1 - Updated: 4/29 - Published: 2/15/2015 - D. Jackson, J. O'Neill, Rodney M., John S.
Camping in the Mainland by Mihas reviews
Could be Worse Verse', set in the middle of Things Could be Worse. Major Evans Lorne had a brilliant career under his belt and he was confident in his balanced mind. At least until he met Atlantis' new, strange recruit: Dean Winchester. Lorne places him in a group of fresh marines for a simple recon mission on the mainland...What could possibly go wrong?
Crossover - Stargate: Atlantis & Supernatural - Rated: T - English - Adventure/Humor - Chapters: 1 - Words: 4,915 - Reviews: 4 - Favs: 6 - Follows: 3 - Published: 4/27 - 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: 9 - Words: 26,943 - Reviews: 116 - Favs: 240 - Follows: 395 - Updated: 4/18 - Published: 2/21/2014 - Rodney M., Shepard (F), Liara T'Soni, OC
dirty little secret by Cora Clavia reviews
When we live such fragile lives, it's the best way we survive.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Romance/Humor - Chapters: 1 - Words: 819 - Reviews: 7 - Favs: 7 - Follows: 2 - Published: 4/14 - S. Carter, J. O'Neill, Elizabeth W., John S. - Complete
Ascension by Drakenn reviews
Future of Earth looks grim as enemies across galaxies plot its destruction, but there is some hope. Small, bright spark of hope that can bring to Tau'ri and its allies their salvation. Join Stargate Program on its road into the future. AU, set after the Universe.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Adventure - Chapters: 4 - Words: 9,506 - Reviews: 25 - Favs: 29 - Follows: 43 - Updated: 4/1 - Published: 3/13
Return To Me by I. M. Frelling-Wonko reviews
After a single night together, fear and misunderstanding have Daniel and Vala running in opposite directions. But when an unforeseen consequence is discovered, will they be able to find their way back to one another? Or will it take a little scheming from their friends to make them see what has always been right in front of them?
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Drama/Romance - Chapters: 7 - Words: 14,601 - Reviews: 21 - Favs: 2 - Follows: 3 - Updated: 3/30 - Published: 3/24 - [D. Jackson, Vala] S. Carter, John S. - Complete
Celestial Empire (China Stargate) by nikkythegreat reviews
Starts with the SG Atlantis Episode Enemy at the Gates. After the battle with the Wraith Super-Hive, the PLAAF Starship Sun Tzu has a plan to save Earth and the Galaxy. A freakish accident strands them in 1862 instead. This is an AU for Stargate, where Imperial China runs a gate program.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Sci-Fi - Chapters: 20 - Words: 63,819 - Reviews: 123 - Favs: 112 - Follows: 140 - Updated: 3/27 - Published: 7/8/2016
Hive effect by Fokusas reviews
The inhabitants of Mass effect galaxy lived in peace, but then everything changed when the wraith attacked :D
Crossover - Stargate: Atlantis & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 3 - Words: 7,932 - Reviews: 10 - Favs: 33 - Follows: 38 - Updated: 3/26 - Published: 2/7
The Jupiter 2 project by kiwikid reviews
When the tem find evidence of the failed Jupiter 2 project on a remote planet they must race to find the crew before the wraith discover their are other humans that know the location of Earth.
Crossover - Lost In Space & Stargate: Atlantis - Rated: T - English - Sci-Fi - Chapters: 19 - Words: 82,735 - Reviews: 31 - Favs: 6 - Follows: 16 - Updated: 3/23 - Published: 11/8/2016 - Complete
A Time Lady In Atlantis by the stargate time traveller reviews
Set after Legacy of the Daleks, a traumatised Susan arrives in Atlantis inside the Master's TARDIS, and has to deal with the unpleasantness of the Tau'ri. Features Barbara and Ian
Crossover - Doctor Who & Stargate: Atlantis - Rated: T - English - Hurt/Comfort/Friendship - Chapters: 1 - Words: 13,104 - Reviews: 3 - Favs: 11 - Follows: 6 - Published: 3/21 - Barbara W., Ian C., Susan F., S. Carter/Sam - Complete
Whispers by Evenmoor reviews
Methos, seeking something new and to maybe take a vacation from younger Immortals eager to take his head, has taken Dr. Jackson up on his offer to join the Stargate Program. His first assignment: the previously-Lost City of Atlantis.
Crossover - Highlander & Stargate: Atlantis - Rated: K - English - Sci-Fi/Adventure - Chapters: 4 - Words: 4,784 - Reviews: 19 - Favs: 54 - Follows: 121 - Updated: 3/19 - Published: 1/19
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