Stargate: Atlantis Crossovers
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A Way Home, Daedalus by TimeTraveller-1900 reviews
AU Seven of Nine comes up with a time travel drive that could fold time together, getting Voyager back home. But during the experiments, a rift is opened and a ship from a parallel universe arrives. The Daedalus is here. Nothing will be the same again.
Crossover - StarTrek: Voyager & Stargate: Atlantis - Rated: K - English - Sci-Fi - Chapters: 1 - Words: 7,983 - Reviews: 1 - Favs: 7 - Follows: 6 - Published: 11/18 - K. Janeway, Seven of Nine, B. Torres - Complete
Celeste by Amelia E. Adler reviews
Continuation of Midnight Blue, Azure, and Shades of Blue: Intermission. After returning to her own timeline, Alice Boyd has to deal with the fallout. Chasing and confronting her nemesis will only be a part of her struggle; more than anything, she will have to face her own emotions, and who knows where they'll lead her in the end... OC with no AU - futurefic.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Sci-Fi/Adventure - Chapters: 43 - Words: 292,051 - Reviews: 135 - Favs: 37 - Follows: 51 - Updated: 11/15 - Published: 3/4/2021
The Other Side of Existence by Starry Bright Light reviews
Alex had settled into his life as an ex-reluctant spy. He went to the local university, kept up with his part-time job, and kept his head down. Unfortunately, that's not good enough for the bad guys still out in the world that want him dead. And after an encounter with a certain Colonel John Sheppard, Alex's perfectly settled, completely normal life is turned on its head.
Crossover - Stargate: Atlantis & Alex Rider - Rated: T - English - Sci-Fi/Adventure - Chapters: 22 - Words: 81,999 - Reviews: 23 - Favs: 33 - Follows: 34 - Updated: 11/13 - Published: 4/1 - Rodney M., John S., Alex R./Cub
Stargate Atlantis: Revan by Spearhead reviews
Fates and Destinies are changed when Revan, the greatest Master of both the Jedi and Sith Orders, is set on a new path by someone from his previous life. The Prodigal Knight and his small team will ally themselves with the Atlantis Expedition to fight the greatest threat known to a galaxy completely foreign to them. But that is only the beginning of the adventure.
Crossover - Stargate: Atlantis & Star Wars - Rated: M - English - Adventure/Sci-Fi - Chapters: 1 - Words: 5,387 - Reviews: 3 - Favs: 12 - Follows: 26 - Published: 11/1
Battle of the three galaxies Apocalypse by c.jamous
the third installment of the series of movie , Apocalypse is a rich in events movie , will have many short chapters, hope you enjoy it . i advise you listen to the below music while reading it will help a lot " youtu . be /h3OpppJvbSs" remove the spaces to work
Crossover - Stargate: Atlantis & Avengers - Rated: K - English - Adventure/Sci-Fi - Chapters: 18 - Words: 15,366 - Favs: 1 - Follows: 2 - Updated: 11/1 - Published: 3/10/2020 - Elizabeth W., David S./Sheppard, Dr. Strange/Stephen S., Carol Danvers/Captain Marvel
Stargate: Archangel, Pilot Episode by RogueTrace reviews
Jessica Martin encounters a Repository of the Ancients in the Colorado mountains, and begins her journey. This is the beginning of "Option 1" of the 5 that I've considered writing.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Sci-Fi - Chapters: 2 - Words: 1,768 - Reviews: 1 - Favs: 7 - Follows: 11 - Published: 10/11
Stargate Atlantis: The Robotech War - Re-Upload by StrikeFreedom11 reviews
Two universe, completely independent from one another, will collide. How will the Atlantis Expedition thrive with one of the greatest warships and some of the bravest and greatest soldiers from another Earth aiding them with their conflict with the Wraith and other threats? Who knows, but it is going to be an amazing ride regardless. Welcome, to Stargate Atlantis: The Robotech War.
Crossover - Robotech/Macross & Stargate: Atlantis - Rated: T - English - Sci-Fi/Adventure - Chapters: 27 - Words: 237,740 - Reviews: 9 - Favs: 69 - Follows: 73 - Published: 10/1 - Lisa/Misa, Rick/Hikaru, Gloval, John S.
Stargate Atlantis: The Robotech War by Strikefreedom10 reviews
Two universe, completely independent from one another, will collide. How will the Atlantis Expedition thrive with one of the greatest warships and some of the bravest and greatest soldiers from another Earth aiding them with their conflict with the Wraith and other threats? Who knows, but it is going to be an amazing ride regardless. Welcome, to Stargate Atlantis: The Robotech War.
Crossover - Robotech/Macross & Stargate: Atlantis - Rated: T - English - Sci-Fi/Adventure - Chapters: 1 - Words: 161 - Reviews: 300 - Favs: 180 - Follows: 217 - Updated: 9/30 - Published: 10/4/2018 - Lisa/Misa, Rick/Hikaru, Gloval, John S.
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: 16 - Words: 136,471 - Reviews: 151 - Favs: 308 - Follows: 392 - Updated: 9/12 - Published: 4/7/2017
Letters to Jack by FaerieMyst
When a post-NCIS Tony DiNozzo is sent to Atlantis, unexpected changes are on the horizon.
Crossover - NCIS & Stargate: Atlantis - Rated: T - English - Chapters: 1 - Words: 10,774 - Favs: 4 - Follows: 3 - Published: 9/10 - Tony D., John S., Teyla E., R. Woolsey - Complete
Videum Anqietas (Odkaz Antiků) by Tom Nov
Toto jsou události co se staly potom co Atlantis přistála na Zemi. Začátek tohoto příběhu se odehrává v budoucnosti, ale později se přesuneme do minulosti a nové alternativní reality. Ve které se bude odehrávat zbytek příběhu a podíváme se i do Multivesmíru. Zároveň se zde objeví žijící Antikové a jedna prastará civilizace.
Crossover - Stargate: Atlantis & Avengers - Rated: T - Czech - Sci-Fi - Chapters: 17 - Words: 1,339,962 - Published: 8/29
The Goa'uld of Beacon: New Pegasus Foothold by qelah22
Ni'khyria is a Goa'uld actress who was born to be a star. When Colonel Jennifer Hailey requests her presence in Atlantis help deal with possible infiltration by Goa'uld bent on becoming a new generation of System Lords, Ni'khyria finds herself meeting amazing people and learning to take on roles she only thought she would ever play onstage. Can a Goa'uld find a home in Atlantis?
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Adventure/Romance - Chapters: 10 - Words: 34,451 - Favs: 2 - Follows: 3 - Published: 8/17 - OC, Rodney M., Teyla E., Ronon D. - Complete
Where I Belong by wereleopard reviews
Tony and Gibbs return to NCIS, but not alone. They have to deal with former teammates, former lovers, and aliens that are controlling people. Just another day for them. This is the sequel to 'Agent, really far, Afloat'.
Crossover - NCIS & Stargate: Atlantis - Rated: T - English - Romance/Drama - Chapters: 6 - Words: 11,583 - Reviews: 32 - Favs: 81 - Follows: 102 - Updated: 7/7 - Published: 1/12/2021 - [Leroy Jethro Gibbs, Tony D.] [Rodney M., John S.] - Complete
Mechanical Warfare by CPB99 reviews
(Sequel to Rise of a new System Lord.). Four years after Jack ends the war with the Goa’uld, a new threat rises from the ashes of a formidable foe. Only he can stop it and to do so, he must leave home for Atlantis.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Adventure - Chapters: 37 - Words: 22,469 - Reviews: 18 - Favs: 11 - Follows: 15 - Updated: 7/3 - Published: 12/13/2021 - J. O'Neill, S. Carter, John S., Teyla E. - Complete
Stargate Salvation by Uni40 reviews
Stargate Salvation is a Time Travel fix it in Stargate, this is on a massive scale. The Aschen have destroyed Earth now the last Tau’ri takes revenge. I have place SGU on an accelerated timeline so that SGU season 1 and SGA season 5 take place simultaneously. This includes All of the Stargate Tv and movies except for Origins.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: K - English - Sci-Fi - Chapters: 2 - Words: 4,668 - Reviews: 4 - Favs: 26 - Follows: 36 - Updated: 5/22 - Published: 5/21 - J. O'Neill, Thor, Elizabeth W., Teyla E.
When Ends Meet by DarcimusBiggus reviews
"When we found him, there was one of those 1950's police telephone boxes next to him. I mean, one of the genuine ones from Earth. Real wood and all. Rodney tried to get in, but it was locked." When the Atlantis team finds a stranger in a suit on an uninhabited planet, they discover that there is a lot more to the universe than previously thought. T because I'm paranoid. ON HIATUS!
Crossover - Doctor Who & Stargate: Atlantis - Rated: T - English - Adventure/Sci-Fi - Chapters: 6 - Words: 3,575 - Reviews: 1 - Favs: 11 - Follows: 14 - Updated: 5/1 - Published: 4/25 - 10th Doctor, Elizabeth W., Rodney M., John S.
Beyond the Gate - Book 2 by Xeir Zith
Picking up exactly where book 1 left off. Tanith has to deal with the aftermath of her shot, and at the same time gets to return to Earth for some incredibly important issues. Ascretta is a huge world, and in has many new friends just waiting to be met. Rodney gets to use his cat care skills when a mother Furling arrives in Atlantis about to have her kittens. Radek names a jumper
Crossover - Stargate: Atlantis & Cats - Rated: M - English - Suspense/Adventure - Chapters: 1 - Words: 9,623 - Follows: 1 - Published: 4/29 - Rodney M., Radek Z., OC, Mungojerrie
Stargate: Discordia by Sin Oan reviews
A Goa'uld scientist comes to Earth to warn the SGC about a plot being hatched by Osiris to restore Goa'uld supremacy over the galaxy. Can she be trusted, or are they being led into an elaborate trap?
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Sci-Fi/Adventure - Chapters: 20 - Words: 38,757 - Reviews: 9 - Favs: 25 - Follows: 33 - Updated: 4/14 - Published: 6/4/2021 - OC
Voyage of the Cha’tahr by CPB99 reviews
Sequel to The Sixth Race: In a test flight gone wrong, Conrad gets send to the Pegasus Galaxy. In debt to his saviors he joins yet another war against an enemy possibly responsible for the extinction of his race. And he must survive being light-years away from his love.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Sci-Fi/Adventure - Chapters: 27 - Words: 42,446 - Reviews: 2 - Favs: 7 - Follows: 5 - Updated: 4/4 - Published: 7/13/2021 - OC, S. Carter, John S., Elizabeth W. - Complete
Harry Potter and The Secrets Of The Stars by PaulaB87 reviews
Harry finds that things are not as they seem. His parents are alive in another galaxy! That Vampires are on Earth and they actually come from a different galaxy as well. Follow his journey to right ancient wrongs and to set things right for a prosperous future This is a Harry Potter x Stargate x Twilight fanficition
Crossover - Harry Potter & Stargate: Atlantis - Rated: M - English - Sci-Fi/Adventure - Chapters: 5 - Words: 9,104 - Reviews: 17 - Favs: 88 - Follows: 105 - Updated: 4/3 - Published: 12/12/2021 - [Harry P., Luna L.] [Lily Evans P., James P.]
The advantures of the Lanteans by Starranger2 reviews
AU. Vor 200 Jahren verschwand eine Expedition, 200 Jahre später taucht ein unbekanntes Volk in der Milchstraße auf.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: K - German - Sci-Fi/Adventure - Chapters: 4 - Words: 4,759 - Reviews: 5 - Follows: 1 - Updated: 3/29 - Published: 2/23
Atlantis Goes Home by I'm not the nerd. You are
Atlantis has been on Earth for months waiting on the decision of weather or not they can return to Pegasus. Everyone has been reassigned until confirmation can be made about what to do with Atlantis .
Crossover - Stargate: Atlantis & Stargate: SG-1 - Rated: K - English - Sci-Fi/Drama - Chapters: 2 - Words: 894 - Favs: 3 - Follows: 6 - Updated: 3/28 - Published: 3/19
the Essance of Silver and steel by warbreaker9901 reviews
(so I'm not great with summary's but here is an attempt) the Zeppo no more, A terror, a Hunter, a Commander of steel and a hope that will shake the hevans and the earth with a pounding march of silver. (i may change the summery also this is a YAHF also m for just in case)
Crossover - Buffy: The Vampire Slayer & Stargate: Atlantis - Rated: M - English - Adventure - Chapters: 2 - Words: 4,555 - Reviews: 1 - Favs: 14 - Follows: 29 - Updated: 3/10 - Published: 1/21
Cognizance by JadeMasonAuthor
Crossover AU. Joining the Atlantis expedition was something Amara had been looking forward to, despite the negative presence of her old colleague Dr. McKay. She knew what to expect. Wraith, potential death, lots of work. She was ready. Except for a charming Captain to swipe her off her feet on the way there.
Crossover - Naruto & Stargate: Atlantis - Rated: M - English - Romance/Sci-Fi - Chapters: 4 - Words: 12,405 - Favs: 3 - Follows: 1 - Updated: 3/1 - Published: 1/4 - [Shisui U., OC] Elizabeth W., Rodney M.
Connections by JadeMasonAuthor
Crossover AU. Settling in the city of the ancestors with her best friend changed her life. Wraith, tech beyond her understanding, wonders she didn't even have words for. The one thing she hadn't expected, however, was a charming Lieutenant to steal her focus.
Crossover - Naruto & Stargate: Atlantis - Rated: T - English - Romance/Sci-Fi - Chapters: 1 - Words: 2,809 - Favs: 1 - Published: 2/22 - [Shisui U., OC] Itachi U., Elizabeth W.
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