Mass Effect Crossovers
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The XCOM Reports by Sage of FanFiction reviews
XCOM, I started the story but had a hard time fitting everything together, so I decided to post these and let you readers fill things in with your own imagination.
Crossover - X-Com & Mass Effect - Rated: K - English - Chapters: 16 - Words: 13,296 - Reviews: 1 - Updated: 1h - Published: 6/5 - Complete
Human Magic Effect by Leona-do reviews
Humanity faced an alien coalition invade Earth led by the Ethereal. Outgunned and Outnumbered. Humanity won because of of Magic. It wasn't science or technology that saved the world. It was ultimately Magic that saved humanity from the Ethereals. Magic changed humanity, and so too it changed the galaxy when humanity entered the stars. Alternative Reality. AU Mass Effect 2
Crossover - Fate/stay night & Mass Effect - Rated: T - English - Fantasy/Sci-Fi - Chapters: 1 - Words: 6,176 - Reviews: 68 - Favs: 255 - Follows: 336 - Updated: 4h - Published: 11/20/2015 - Shepard (M)
XCOM 2: The Second Contact! by Halofan5695 reviews
After defeating ADVENT, XCOM founded a new government called the Terran Empire, a far-right isolationist government. They even goes as far as to found colonies in the Andromeda galaxy to avoid a second contact. However that did not work, as they make contact with hostile aliens in their colony of Plymouth Rock at the Athena nebula.
Crossover - X-Com & Mass Effect - Rated: T - English - Sci-Fi/Tragedy - Chapters: 16 - Words: 107,460 - Reviews: 70 - Favs: 58 - Follows: 71 - Updated: 13h - Published: 4/3 - Saren A., Joker, Illusive Man, Shepard (M)
Outcast Effect by The Incredible Muffin reviews
When the Outcast Blades and their allies attack a top-secret Imperial project, they are unprepared for the consequences. Now, they must survive in a new galaxy, with new friends and enemies alike. Can the Blades show another galaxy that they're the best, or will the Reapers harvest them as well?
Crossover - Star Wars & Mass Effect - Rated: T - English - Sci-Fi/Suspense - Chapters: 21 - Words: 192,245 - Reviews: 354 - Favs: 389 - Follows: 434 - Updated: 15h - Published: 7/6/2014 - OC
Desperate Times Call For Desperate Measures by ARCCaptainFordo reviews
To defeat Horus and his fellow traitors wouldn't be easy. While the Emperor answered Horus' open challenge at Istvaan III by dispatching seven of his sons to deal with their errant brothers, the Imperium dispatched a battle group of the best forces on hand at the time to deal a blow to the traitors by attacking a Dark Mechanicus Forge World. The Dark Gods have other plans.
Crossover - Warhammer & Mass Effect - Rated: T - English - Sci-Fi/Fantasy - Chapters: 2 - Words: 29,368 - Reviews: 29 - Favs: 24 - Follows: 51 - Updated: 18h - Published: 7/16
Biomass Effect by Zenko reviews
TRAD. "Toda la vida en la Tierra ha sido consumida por Blacklight. Sin biomasa de la que alimentarse, Blacklight tuvo que evolucionar, adaptarse, y crecer. Ahora un Consejo de Aliens descubre la existencia e tal forma de vida. ¿Cómo ven los aliens una forma de vida que es vírica? ¿Cómo lidian con ella? ¿Cuáles son las consecuencias para la galaxia de la existencia de esta raza?"
Crossover - Mass Effect & Prototype - Rated: T - Spanish - Sci-Fi - Chapters: 20 - Words: 103,670 - Reviews: 17 - Favs: 4 - Follows: 4 - Updated: 20h - Published: 3/12
Whispers of Darkness by Darthkvzn reviews
Billions have died, but their sacrifices have brought the known races of the galaxy freedom. Their destiny is theirs to command, and peace, albeit a somber one, reigns unchallenged. The cosmos is full of constants, however, and death is the most prominent of them all. *Set after ME3 and LotV, spoilers*
Crossover - StarCraft & Mass Effect - Rated: T - English - Chapters: 9 - Words: 14,030 - Reviews: 41 - Favs: 82 - Follows: 112 - Updated: 7/24 - Published: 12/7/2015
Guardians of the Effect by sandewrpally reviews
After a Fallen ambush Titan Kane Ackerson wakes in another Galaxy. There is light here, but also darkness. For what purpose are Guardians than to ally with against the Darkness? Join Jane Shepard and the Guardians as they fight against the Reapers, against the Darkness.
Crossover - Mass Effect & Destiny - Rated: T - English - Romance/Sci-Fi - Chapters: 4 - Words: 14,494 - Reviews: 4 - Favs: 3 - Follows: 8 - Updated: 7/24 - Published: 7/22 - [Shepard (F), Garrus V.] OC, Cmdr. Zavala
Guns and Swords by Boulderstar2000 reviews
When Analyn the Dragonborn finds a ragtag groups of strangers out in the wilds of Skyrim, she quickly finds out that they are more than they first seem.
Crossover - Elder Scroll series & Mass Effect - Rated: T - English - Adventure - Chapters: 12 - Words: 31,398 - Reviews: 31 - Favs: 47 - Follows: 78 - Updated: 7/23 - Published: 2/21 - Dragonborn/Dovahkiin, Shepard (F), Garrus V., Liara T'Soni
Heroes UNITE! by So-Pro Warrior reviews
Commander Shepard and his team have gathered together the races of their Galaxy in an effort to defeat the Reapers. But is it enough? When the Commander and his team come across a strange woman they find out that if they are to truly defeat the Reapers once and for all. They will need all the help they can get. But not from their Universe. Multiverse Crossover!
Crossover - Mass Effect & Halo - Rated: T - English - Adventure/Sci-Fi - Chapters: 21 - Words: 488,244 - Reviews: 183 - Favs: 116 - Follows: 105 - Updated: 7/23 - Published: 6/21/2013 - Master Chief/John-117, Shepard (M)
Demonic One Shots by Raydiva
Don't you hate it when you got a good scene written out but no place to use it it any of your stories? Guess that's where many one-shots come from. So I'm going to start placing some scenes that never make it into my Dragon Age/Mass Effect Demon storyline but I feel are decent enough to be considered one-shots. They will be added as they turn up while writing the normal story.
Crossover - Mass Effect & Dragon Age - Rated: T - English - Fantasy - Chapters: 4 - Words: 7,347 - Favs: 5 - Follows: 3 - Updated: 7/23 - Published: 6/18/2015 - [Cole, Shepard (F)]
Scarlet Lily of Sol by ArcturusWolf reviews
In an alternate future, when Cerberus held captive the Diclonii with an iron fist, a lone Diclonius escapes into the vast emptiness of space. With only herself and her ship, what will the future hold for the fugitive? Can she find peace, or will she wreak bloody revenge as she was destined to?
Crossover - Elfen Lied & Mass Effect - Rated: T - English - Chapters: 7 - Words: 29,114 - Reviews: 10 - Favs: 15 - Follows: 32 - Updated: 7/23 - Published: 7/4 - Lucy / Nyu, Shepard (F)
The Spartan Effect by Gatekeeper333 reviews
Everyone's favorite Spartan is looking for a new purpose, lucky for him, the Commander his happy to oblige.
Crossover - Halo & Mass Effect - Rated: T - English - Chapters: 18 - Words: 168,844 - Reviews: 640 - Favs: 1,115 - Follows: 1,432 - Updated: 7/22 - Published: 3/27/2011 - Master Chief/John-117, Tali'Zorah, Miranda L., Shepard (M)
N7 SOLDIER by TheScreamingViking reviews
The Crucible dumps Shepard on Gaia. The first human Spectre becomes the first female SOLDIER as well as their first elite Sniper. Her uncanny ability to bring reason to unreasonable situations will alter the fate of the entire planet, but especially that of her three First Class friends. FF7 / ME3
Crossover - Final Fantasy VII & Mass Effect - Rated: T - English - Adventure/Friendship - Chapters: 42 - Words: 175,891 - Reviews: 494 - Favs: 548 - Follows: 610 - Updated: 7/22 - Published: 3/28/2015
Mirrored Fates by long night of solace reviews
After the defeat of the didact, the galactic hero of the halo universe - Masterchief and his loyal blue team members embark on a strange new journey to an unknown universe in which later they come into contact with that universe's hero - Commander Shepard. Facing an unknown enemy, fighting a new war, its up to the heroes to save the day together.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 11 - Words: 75,293 - Reviews: 57 - Favs: 109 - Follows: 125 - Updated: 7/22 - Published: 5/3 - Master Chief/John-117, Cortana, Admiral Hackett, Shepard (M)
Causing Havoc in Two Dimensions by crazyman844 reviews
Rakatan technology is notable for being highly advanced. Havoc squad find out just how advanced it can be when it's CO is tossed out of one dimension, out of the life she knew, and thrust into one very different from her own. At least her credits still work.
Crossover - Star Wars & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 3 - Words: 13,710 - Reviews: 5 - Favs: 8 - Follows: 21 - Updated: 7/22 - Published: 7/15 - Trooper, Shepard (F)
Necessary Monsters by RaptorusMaximus reviews
Comander Shepard is a Hero. A paragon of all that is good about sentient life in the galaxy. But she must stand against a force that cares not for heros, for honor, for the sanctity of life. Luckily, newcomers have arived who share these traits, and will work parallel to Shepard in the darkness; the Shadows to her Light. After all, no-one expects the Imperial Inquisition.
Crossover - Warhammer & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 1 - Words: 3,287 - Reviews: 7 - Favs: 6 - Follows: 19 - Published: 7/21 - Eldar, Inquisition, Deathwatch, Shepard (F)
Reaping Destiny by ShoredKafka reviews
Foolish humans, thinking to draw this soldier back to the realm of the living. Death does not allow souls to slip so easily from its grasp. But perhaps there is a way for all goals to be met. The Reapers presume to take my work upon themselves. I cannot teach them the error of their ways personally. It is time for my master to walk the mortal lands once more. MOD!Harry.
Crossover - Harry Potter & Mass Effect - Rated: T - English - Chapters: 10 - Words: 76,611 - Reviews: 541 - Favs: 1,463 - Follows: 2,059 - Updated: 7/20 - Published: 3/27/2015
Biomass Effect by Beastrider9 reviews
All life on Earth had been consumed by Blacklight. With no Biomass to feed on, Blacklight had to evolve, adapt, and grow. Now a collective Council of Aliens discovers the existence of such a life form. How do the aliens see a form of life that is viral, how they deal with it, what are the consequences to the galaxy of such a race existing at all.
Crossover - Mass Effect & Prototype - Rated: T - English - Sci-Fi - Chapters: 36 - Words: 176,643 - Reviews: 1740 - Favs: 2,397 - Follows: 2,730 - Updated: 7/20 - Published: 8/8/2014
The Reclamation has already begun by Fade Maybe reviews
The Requiem Event has ended. The Reaper War is reaching its climax. In 2557 Military Calendar and 2186 Common Era, the UNSC finds itself on the brink of infighting and the Citadel Races on the brink of annihilation. Light will be shed upon questions the Forerunners left behind. Ancient threats rise again. This is only the next step in the Reclamation, and it is too late to stop it.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 9 - Words: 88,870 - Reviews: 441 - Favs: 409 - Follows: 546 - Updated: 7/20 - Published: 3/13/2013
Mass Effect: Temporal Storm by Codename Dutchess reviews
When Harry's raid on the Ministry of Magic to rescue Sirius goes awry, he gets thrown forward in time, approximately 184 years. Later, when the secret Alliance vessel Normandy goes on its first voyage to Eden Prime, how will Commander Shepherd cope with an upstart Corporal on his first real assignment?
Crossover - Harry Potter & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 3 - Words: 5,452 - Reviews: 9 - Favs: 70 - Follows: 150 - Updated: 7/20 - Published: 7/7
Someone had blundered by magkiln reviews
A turian scout force sets out to patrol empty starsystems. A human exploration fleet makes ready to approach a dormant mass relay. Soon their paths will cross and if they fail to make peaceful contact, the consequences will be deadly. Rated T for violence
Crossover - Aliens/Predator & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 26 - Words: 106,462 - Reviews: 357 - Favs: 389 - Follows: 508 - Updated: 7/20 - Published: 4/25/2015 - Predator/Yautja, Illusive Man, Councilor Tevos, Councilor Sparatus
Are We Alone by JIMMYJAMSTER728 reviews
What if gods were real? Many have wondered what would happen if they were proven to exist, what cultures would do at the sight of these all powerful beings that appeared from nowhere. How would those that once worshiped them acts. How would their allies perceive them knowing that they have gods that exists. What changes in fate would occur, if one of these gods appeared on Elysium.
Crossover - Bleach & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 7 - Words: 60,866 - Reviews: 393 - Favs: 794 - Follows: 955 - Updated: 7/20 - Published: 7/6/2015 - Ichigo K., Shepard (F)
The Cycle by Church -Caboose- Shepard reviews
Fighting off extinction Shepard must find the legacy left to humanity by the Forerunners. And find a way to defeat both the Reapers and the Prophet of Truth from gaining the power to destroy all sentient life in the Galaxy.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 33 - Words: 92,054 - Reviews: 120 - Favs: 40 - Follows: 56 - Updated: 7/19 - Published: 8/29/2012 - Arbiter, Prophet of Truth, Shepard (M), OC
Commander Rose by DisgruntledJaeger reviews
She awoke with nothing. No family, no friends, no memory. The only thing she could call her own was her name. Though the fires of war changed her, though the little girl she once was had vanished, though the galaxy began to crumble around her, she never forgot who she was. She was Ruby Rose and she was going to find her way home, even if she had to go through the Reapers to do it.
Crossover - Mass Effect & RWBY - Rated: T - English - Adventure/Sci-Fi - Chapters: 5 - Words: 24,403 - Reviews: 77 - Favs: 96 - Follows: 157 - Updated: 7/18 - Published: 6/5 - Ruby Rose
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