X-Com Crossovers
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A Dream of Terrors by Spearka reviews
Crossover between Game of Thrones and XCOM. As the Dead march south, a new and mysterious force from another world is poised to change Westeros forever.
Crossover - X-Com & Game of Thrones - Rated: M - English - Sci-Fi/Fantasy - Chapters: 4 - Words: 37,431 - Reviews: 12 - Favs: 33 - Follows: 43 - Updated: 16h - Published: 6/16/2019
The War of Exaltation War of the Worlds XCOM by Praetus reviews
The world is undergoing unprecedented change. It is a time of progress, prosperity and blinding achievement, coupled with dire poverty and a world under pressure from internal struggles. So, no wonder everyone thought the chances of something coming from Mars were a million to one
Crossover - X-Com & War of the Worlds - Rated: T - English - Adventure/Drama - Chapters: 47 - Words: 173,039 - Reviews: 36 - Favs: 24 - Follows: 21 - Updated: 4/10 - Published: 6/1/2019 - Bradford, Dr. Vahlen, R. Shen
A dire mistake by possibly Gigan reviews
ADVENT has been gone for ten years. In that time, the commander had gotten married, had three kids, and got things as close to what they were before the invasion as possible. But what happens when a new foe appears and tries to destroy it all? Thus, XCOM fought.
Crossover - X-Com & Gate - Jietai Kare no Chi nite, Kaku Tatakeri - Rated: M - English - Chapters: 4 - Words: 6,908 - Reviews: 8 - Favs: 44 - Follows: 47 - Updated: 4/9 - Published: 4/1/2019
XCOM: Free as Bird by MercBoss
A simple recon mission for XCOM operative Faith Connors
Crossover - X-Com & Mirror's Edge - Rated: T - English - Adventure/Sci-Fi - Chapters: 2 - Words: 927 - Updated: 4/9 - Published: 2/24 - Bradford, Firebrand, Faith C., Kate C.
ACM: Enemigo Desconocido by VMCG93 reviews
Cuando los alienigenas vienen a Equestria con intenciones hostiles, solo un grupo podrá detenerlos. Agencia Cazadora de Monstruos va a incluir alienigenas en su lista de cacería. Y van a no solo salvar su mundo, si no, otro más. Averigüe como leyendo esta historia.
Crossover - X-Com & My Little Pony - Rated: T - Spanish - Sci-Fi/Suspense - Chapters: 120 - Words: 896,860 - Reviews: 185 - Favs: 7 - Follows: 6 - Updated: 4/8 - Published: 8/12/2018 - Bradford, Princess Celestia, Sunset Shimmer, OC
Avatar of Liberty by NamThunder reviews
The Elder's last hope, the Exodus, was launched during XCOM's final assault on the underwater fortress. The last Ethereal and Avatar, designated as Noah, had to led the crew of the Exodus to find new allies. But they did not expect who and what they will meet in this Kropulu Sector.
Crossover - StarCraft & X-Com - Rated: T - English - Sci-Fi/Adventure - Chapters: 22 - Words: 41,870 - Reviews: 79 - Favs: 84 - Follows: 104 - Updated: 4/8 - Published: 3/1/2018 - James R., Terran, OC
Tales From The Avenger by DrAmishMD reviews
A collection of one-shots written by readers of XCOM: RWBY Within and XCOM: Remnant Unknown.
Crossover - X-Com & RWBY - Rated: M - English - Humor/Adventure - Chapters: 26 - Words: 115,174 - Reviews: 52 - Favs: 114 - Follows: 135 - Updated: 4/6 - Published: 7/3/2018
It Was Never Just About the Suit by ajpa reviews
In addition to the Ethereal Device, XCOM also recovered a device akin to a gateway/portal. Meanwhile, in a different universe, Prophet is caught the feedback reaction from destroying the Ceph wormhole.
Crossover - X-Com & Crysis - Rated: T - English - Adventure - Chapters: 3 - Words: 2,284 - Reviews: 2 - Favs: 11 - Follows: 10 - Updated: 3/28 - Published: 3/19
Operation: Go Home by Shock Factor reviews
You tell someone from 2015 that aliens will rule the world by 2016, they'll call you a liar. You tell someone from 2020 that XCOM will rise up to fight said aliens, they'll call you a liar. You tell XCOM that a bunch of teenagers are gonna be their only hope of survival, they'll most likely shoot you after calling you a liar.
Crossover - X-Com & RWBY - Rated: M - English - Suspense/Supernatural - Chapters: 37 - Words: 212,076 - Reviews: 13 - Favs: 65 - Follows: 81 - Updated: 3/28 - Published: 12/20/2018 - Jaune A., Pyrrha N., L. Ren, Nora V.
Strange people from a war-torn world by Narsauce reviews
The war for Earth is over, the Elders and Advent have been defeated. As Alpha Squad, the best XCom has, begins to settle into a new life of peace, their lives are thrown astray as a mission to find an old friend gets FUBAR. Now, thrown into a world new to them, they must adapt to survive... the high school classroom as teachers.
Crossover - X-Com & RWBY - Rated: T - English - Sci-Fi/Hurt/Comfort - Chapters: 16 - Words: 124,571 - Reviews: 19 - Favs: 88 - Follows: 116 - Updated: 3/23 - Published: 9/25/2018 - Bradford, Summer R., Emerald S., Team RWBY
The Bureau: Summer Declassified by Joey245 reviews
Following her final confrontation with Salem, Summer Rose is mysteriously transported to another world on the brink of war - not only with itself, but with an alien invasion. Can she navigate this strange new world? Will she ever find a way back home to Remnant? And what secrets does the Bureau hold? (Inspired by DrAmishMD's excellent XCOM/RWBY stories.)
Crossover - X-Com & RWBY - Rated: M - English - Adventure - Chapters: 8 - Words: 51,319 - Reviews: 22 - Favs: 44 - Follows: 62 - Updated: 3/22 - Published: 7/22/2019 - R. Shen, OC, Summer R.
Resistance by pokeman1280 reviews
The Traitor is dead. Salem is dead. Ruby thought she could live in at least temporary retirement, but the universe had other plans. Stripped from her home, away from those she loves the most, she is forced to fight for a world foreign to her. Few others are in her position The only way for everyone get back to their homes, help X-COM win their war.
Crossover - X-Com & RWBY - Rated: T - English - Sci-Fi - Chapters: 5 - Words: 26,762 - Reviews: 14 - Favs: 39 - Follows: 53 - Updated: 3/16 - Published: 12/9/2019 - Bradford, Ruby R.
Ruby Rose, Engineer Extraordinaire by Kaiimei reviews
Tumbling through a mysterious portal was not Ruby's plan, nor was it to end up in the middle of a war between humans and aliens on a different planet. With her aura gone and Crescent Rose left at home, Ruby is swept up by Chief Engineer Shen immediately for her love of engineering and weaponsmithing, and together, there's nothing they can't build. - Faunus Ruby.
Crossover - X-Com & RWBY - Rated: T - English - Humor/Sci-Fi - Chapters: 4 - Words: 23,596 - Reviews: 15 - Favs: 105 - Follows: 149 - Updated: 3/13 - Published: 7/23/2019 - R. Shen, Ruby R.
The Dominion rises by tombstone199998 reviews
The dominion has stood strong for centuries since the Ethereal war, under the guidance of the Emperor the Terrans have risen beyond the wildest of dreams, what happens when they encounter the a race of council exiles in desperate need.
Crossover - X-Com & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 5 - Words: 25,421 - Reviews: 72 - Favs: 370 - Follows: 543 - Updated: 3/11 - Published: 6/18/2017
Stardust by Tio Brony reviews
Traducción de la historia Stardust de Arad de la página de Fimfiction.
Crossover - X-Com & My Little Pony - Rated: M - Spanish - Sci-Fi/Fantasy - Chapters: 10 - Words: 56,654 - Reviews: 2 - Favs: 1 - Follows: 1 - Updated: 3/11 - Published: 8/20/2019
Because Of The War by Shadows of Vanity reviews
August 31st, 2010, 19:00 hours, Brockton Bay, Approximately Fifteen Minutes from Brockton Bay Cinemas. The precise time and place that Taylor Hebert was fatally wounded whilst caught in the crossfire between the ABB and the E88. The precise time and place that the Queen Administrator, suborned by the Earth-born Ethereal Asaru, made Taylor The Commander of XCOM.
Crossover - X-Com & Worm - Rated: M - English - Sci-Fi/Romance - Chapters: 10 - Words: 63,324 - Reviews: 193 - Favs: 1,049 - Follows: 1,298 - Updated: 2/26 - Published: 9/19/2017 - [Skitter, Panacea] [Danny H., Miss Militia]
Contingency Plans across several Alternate Universes! by mpalmer89 reviews
The X-Com Troops deal with the actions of the Sectoids to save the Asgard Species from extinction while the Daleks invade the Stargate Universe against both sides!
Crossover - Stargate: SG-1 & X-Com - Rated: M - English - Adventure/Drama - Chapters: 600 - Words: 195,202 - Reviews: 22 - Favs: 19 - Follows: 16 - Updated: 2/23 - Published: 10/17/2010
XCOM: Remnant Unknown by DrAmishMD reviews
The sequel to XCOM: RWBY Within. Teams RWBY and JNPR return to Remnant in time for the Vytal Festival. They're relieved to finally have their lives get back to normal after nine months on war-torn Earth, but is the life of a huntsman ever truly normal?
Crossover - X-Com & RWBY - Rated: M - English - Adventure/Sci-Fi - Chapters: 48 - Words: 488,809 - Reviews: 1100 - Favs: 1,121 - Follows: 1,279 - Updated: 2/20 - Published: 7/22/2016 - Team RWBY, Team JNPR - Complete
Code Geass: Lelouch of the XCOM by nphillips0115 reviews
A secre from his mother’s past leads Lelouch into a battle against not only Britannia, but a threat from beyond Earth. Can Zero defeat both foes?
Crossover - Code Geass & X-Com - Rated: T - English - Sci-Fi - Chapters: 7 - Words: 16,725 - Reviews: 3 - Favs: 31 - Follows: 28 - Updated: 2/7 - Published: 6/2/2019
To keep the sparkle alive by Fiamma379
Cayde-6, the name is well known to the Traveler and now that he is dead, he has great plans for him. He will send him on a mission to save a world from another type of darkness, one with the power similiar to the Hive if not worst. (On hiatus until i finish my other fanfiction "New alien and New mission" consider this as a teaser trailer.)
Crossover - X-Com & Destiny - Rated: M - English - Sci-Fi - Chapters: 1 - Words: 6,965 - Favs: 6 - Follows: 5 - Published: 2/7 - Bradford, Dr. Tygan, L. Shen, Cayde-6
Remnant Unknown: Alternate Theory by RodentLordSteve reviews
This started out as a gag about various short scenarios that kinda escalated into a story thanks to an idea that one of us on the Discord server had. (Under Rewrite)
Crossover - X-Com & RWBY - Rated: M - English - Sci-Fi/Adventure - Chapters: 2 - Words: 2,352 - Reviews: 4 - Favs: 1 - Follows: 7 - Updated: 2/3 - Published: 11/30/2018
Xcom Justice by Blackace12 reviews
After a long war with Advent and an invasion even the Elder's fear, with the final order of the Commander he sacrifices himself not only to save the world but the universe as well only to find himself in another earth were X-com doesn't exist and the world is filled with Superhero aliens and Villans
Crossover - X-Com & Young Justice - Rated: M - English - Adventure/Sci-Fi - Chapters: 4 - Words: 28,732 - Reviews: 10 - Favs: 32 - Follows: 41 - Updated: 1/27 - Published: 12/31/2019
Earth Is About To Change by erttheking reviews
The Lone Wanderer had protected the Capital Wasteland from as much as he could. But even he has his work cut out for him when it comes to a force from another world. Fortunately, he finds a new ally in this trying time. Patreon sponsored one-shot
Crossover - X-Com & Fallout - Rated: T - English - Drama - Chapters: 1 - Words: 8,207 - Reviews: 3 - Favs: 19 - Follows: 23 - Published: 1/8
Officially that guy by gargomon reviews
A very salty guy gets sent into the Dreamworks' She-ra verse and has the body of an X-com avatar with all the psychic shennanigans that it entails. Also will have lemons eventually. Do not read unless you want to have a headache.
Crossover - X-Com & She-Ra and the Princesses of Power - Rated: M - English - Sci-Fi - Chapters: 1 - Words: 5,391 - Reviews: 4 - Favs: 5 - Follows: 11 - Published: 12/27/2019
XCOM: Operation Pathfinder by K Fire0210 reviews
Dr Tygan has, on the orders of the Commander, been studying an orb of some kind that appeared out of nowhere in the North American region. This orb happens to be a gateway to another dimension and some of its inhabitants have been dumped into the year 2035 on a world run by aliens. These adventurers are not prepared for XCOM's method of war or its attitude to non-humans.
Crossover - X-Com & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 3 - Words: 4,151 - Reviews: 7 - Favs: 25 - Follows: 49 - Updated: 12/6/2019 - Published: 11/23/2019
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