Mass Effect Crossovers
Filters
3.4K | « Prev Page 1 .. 3 4 5 6 7 8 9 16 .. Last Next »

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 team comes 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! Chapters 6-22 Being Rewritten!
Crossover - Mass Effect & Halo - Rated: T - English - Adventure/Sci-Fi - Chapters: 49 - Words: 1,514,387 - Reviews: 893 - Favs: 414 - Follows: 398 - Updated: 6/14 - Published: 6/21/2013 - Master Chief/John-117, Shepard - Complete
From the Barracks: Rise of Man - Alenko: The Subject by CrepeSquid reviews
A quiet day on the farm is interrupted by an Asari assault, Will our intrepid hero survive unscathed? Part of a joint project with kind permission from M. B. Liddle, Author of Aggressor: Rise of Man
Crossover - Mass Effect & Resistance: Fall of Man - Rated: M - English - Horror/Sci-Fi - Chapters: 1 - Words: 5,380 - Reviews: 1 - Favs: 3 - Follows: 2 - Published: 6/13 - Kaidan A. - Complete
Mass Infestation by K2JC reviews
Of all the threats the Systems Alliance had faced, a Xenomorph Infestation was by far the worst. The infestation can range from a small colony to an entire planet. The year 2182 saw the largest number of Xenomorph infestations across Alliance Space and the Systems Alliance attempts in exterminating this threat before they were forced to take desperate measures.
Crossover - Mass Effect & Aliens/Predator - Rated: M - English - Adventure - Chapters: 1 - Words: 7,901 - Reviews: 4 - Favs: 26 - Follows: 34 - Published: 6/12
Sudden Terminus by A Very Thirsty Megalomaniac reviews
The end is nigh. Sequel to Sudden Contact and Sudden Supremacy. Finale of the Sudden Series. The outcome is uncertain.
Crossover - StarCraft & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 22 - Words: 122,131 - Reviews: 132 - Favs: 257 - Follows: 278 - Updated: 6/10 - Published: 10/22/2017 - Zeratul, Saren A., Javik, Tarquin Victus
The Great Galactic War by hellothere45 reviews
Occurs after the events of Halo Infinite. Cortina finds out about a new enemy from the void of space called the reapers who are trying to rule the galaxy sending a warning to her former allies and enemies to unite the, she assigns chief espranza and the Weapon on a mission to unite the Citadel species to fight a war to end all wars in the Galaxy, can they do this task
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 3 - Words: 4,068 - Reviews: 15 - Favs: 22 - Follows: 32 - Updated: 6/9 - Published: 6/3
Place of Our Legacy by firstprime1230 reviews
Earth has been overrun by the forces of the Ori. Beaten, demoralized and on the run in the Ancient city of Atlantis the survivors of Earth make a desperate gamble to save what little they have left. Arriving in a galaxy so different from their own, can they to uphold the legacy left to them by the races that came before? And save a galaxy doomed to a suffer a fate worse than death.
Crossover - Stargate: SG-1 & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 8 - Words: 84,240 - Reviews: 277 - Favs: 780 - Follows: 1,114 - Updated: 6/9 - Published: 4/30/2020
RWBY Effect: The Twilight Dawn by Owriush reviews
With the breach dealt with. Team RWBY have earned a break, only before that. They're sent out to investigate a Grimm gathering. Only to end up in a different world all together. One with its own humans, co-existing with aliens. Now Elizabeth Shepard, her crew and the girls of team RWBY must fight to save this new Twilight Dawn, from the growing darkness. (Complete as of 6/7/2022)
Crossover - Mass Effect & RWBY - Rated: T - English - Adventure/Romance - Chapters: 45 - Words: 734,419 - Reviews: 130 - Favs: 342 - Follows: 341 - Updated: 6/7 - Published: 9/16/2015 - Complete
Spectre by Jonathan Palmer reviews
When the SSV Normandy is attacked Ashley convinces Shephard to to go with her. Follow their travels as Shephard makes it off the Normandy alive. Stranded on late 20th century Earth what will they do now? AU, Smart Harry, Female Shephard.
Crossover - Harry Potter & Mass Effect - Rated: M - English - Sci-Fi/Friendship - Chapters: 7 - Words: 23,471 - Reviews: 38 - Favs: 172 - Follows: 273 - Updated: 6/4 - Published: 1/20 - Harry P., Ashley W., Shepard
Daily war with monster girls by Masterdude21 reviews
With the help of the highly-motivated extra-species in the military, mankind holds their own against the brutal onslaught of the Covenant. In their haste to close the gap in space warfare, ONI stumbles upon Relay 314. Even as new enemies arise, the galaxy constantly thwarts Cortana's schemes to build the Master Chief the ultimate harem. Halo/Mass Effect/Monster Musume crossover.
Crossover - Halo & Mass Effect - Rated: M - English - Humor/Romance - Chapters: 27 - Words: 369,940 - Reviews: 1048 - Favs: 2,017 - Follows: 2,295 - Updated: 6/4 - Published: 9/20/2016 - Master Chief/John-117, Cortana, Shepard
The Dark Effect by ULFBERHT reviews
At the risk of Eternal boredom Dante Sparda and V join The crew of the Normandy and venture into the darkest corners of the galaxy. On a mission to stop the Collectors, Shepard comes face-to-face with God-like beings with powers beyond imagination and Dante faces old enemies of his past, Thereby propelling all of them into an epic game of life and death.
Crossover - Devil May Cry & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 3 - Words: 8,344 - Reviews: 3 - Favs: 20 - Follows: 34 - Updated: 6/4 - Published: 5/13 - Dante(DmC), Vergil(DmC), V, Shepard
Galactic nightmare by RadiantVoid reviews
It has been a year since Ghost returned to his own dimension. Since then, Shepard has kept on doing what she does best : preparing for the Reapers' arrival, and trying to wake the galaxy up to their impending doom, to little success. Now, as they stand at the edge of the precipice, a mysterious figure appears before Shepard : Grimm, the Troupe master...
Crossover - Mass Effect & Hollow Knight - Rated: T - English - Adventure - Chapters: 12 - Words: 59,615 - Reviews: 75 - Favs: 217 - Follows: 275 - Updated: 6/4 - Published: 2/20/2021 - Shepard, the Knight
Effect of a seal by Fanreader26 reviews
it was placed on him when he was born and he was never informed about it. but one day on the training field, he overloaded a seal that kept a secret from everyone in the village including himself. now that the seal is broken, he finds more about his ancestry and a new power that goes beyond his village. Gender bender of sorts. it will make sense if you give a chance
Crossover - Naruto & Mass Effect - Rated: T - English - Drama/Sci-Fi - Chapters: 3 - Words: 25,007 - Reviews: 44 - Favs: 107 - Follows: 137 - Updated: 6/1 - Published: 4/1 - Naruto U., Hiruzen S.
Rise of Humanity by James118 reviews
Soon after the war with the Covenant, humanity discovers a Mass Relay that opens the door to the rest of the galaxy. But it also awakens the greatest threat humanity has ever faced. Male Shepard/Liara. OC/Krystal (from Star Fox).
Crossover - Halo & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 2 - Words: 22,101 - Reviews: 20 - Favs: 93 - Follows: 134 - Updated: 5/31 - Published: 5/21 - [Shepard, Liara T'Soni] OC
Effect of a Titanfall by MidnightFenrir reviews
When you die, you expect things to happen, from the void to eternal happiness. But if given the choice to live again, wouldn't you take it? I did. Since then, it's been one crazy thing after the other, the latest of which was to end up in yet another universe. But what can you expect when the manifestations of Luck and Fate themselves tell you it's going to be an adventure? OC/SI.
Crossover - Mass Effect & Titanfall - Rated: M - English - Adventure/Sci-Fi - Chapters: 7 - Words: 52,523 - Reviews: 311 - Favs: 1,608 - Follows: 2,106 - Updated: 5/29 - Published: 12/17/2016 - Kasumi G., Shepard, OC, BT-7274
The Good Shepherd: Season One by Dingo32 reviews
In her time Carrie white was the first human biotic, but she was driven to insanity, slaughter and apparent suicide by the cruelty of those around her. In another age her gift of natural biotics holds the key to a better life for those of her ilk, but that may not be all she has to offer the galaxy. Undergoing rewrite.
Crossover - Mass Effect & Carrie - Rated: M - English - Sci-Fi/Supernatural - Chapters: 1 - Words: 9,195 - Reviews: 24 - Favs: 67 - Follows: 102 - Updated: 5/28 - Published: 5/6/2016
My Leather seats by Sid117 reviews
Something is bothering Normandy's pilot Joker "Jeff Moreau " and SR2 intends to find out. What Joker reveals will change their relationship between them forever.
Crossover - Mass Effect & KanColle - Rated: M - English - Romance/Angst - Chapters: 9 - Words: 9,585 - Reviews: 2 - Favs: 3 - Follows: 3 - Updated: 5/27 - Published: 12/24/2021 - Complete
The Normandy's Nomad (Early Concept) by illFatedSuccess reviews
An early concept for a future story that see's V join Shepard's fight against the Collectors. This chapter focuses on Jack's recruitment mission and showcases Shepard's first time witnessing V and his cybernetics in action. Please do enjoy and leave a review on what you think.
Crossover - Mass Effect & Cyberpunk 2077 - Rated: M - English - Sci-Fi/Adventure - Chapters: 2 - Words: 5,953 - Reviews: 16 - Favs: 43 - Follows: 60 - Updated: 5/27 - Published: 1/21 - Garrus V., Shepard, V, Johnny Silverhand - Complete
A Metal Guardian by JawsOnYou67 reviews
The Universal Century, only a few short years ago humanity nearly eradicated itself to the tune of a madman, now it spreads, free of most of its old hatred. Yet the galaxy won't let them rest. Terminal prepares the twin Queens as best it can. (Gundam x Mass Effect)
Crossover - Gundam UC & Mass Effect - Rated: T - English - Sci-Fi/Humor - Chapters: 8 - Words: 129,378 - Reviews: 95 - Favs: 274 - Follows: 344 - Updated: 5/25 - Published: 8/18/2020 - Amuro R., Char A., Tali'Zorah, Admiral Hackett
Spirit of Fire by GoldenThorns-Fiverr reviews
A Crossover fanfic I did as a Fiverr request.
Crossover - Halo & Mass Effect - Rated: T - English - Chapters: 1 - Words: 7,853 - Reviews: 3 - Favs: 8 - Follows: 8 - Published: 5/24 - Complete
A certain Level 5 in Shanxi by reinDank
He whimpered a bit when he hear the insane laughing and the flapping of the wings.
Crossover - Mass Effect & Toaru Majutsu no Index/とある魔術の禁書目録 - Rated: M - English - Angst/Sci-Fi - Chapters: 1 - Words: 715 - Favs: 8 - Follows: 12 - Published: 5/23 - OC, Accelerator - Complete
Reshiram Effect by Knightwolf1875 reviews
A rift in space/time has aloud a young anthromorphic reshiram named sara Denova to enter the Mass Effect world. What awaits her and Sheaprd as they go along in ME2's battle with the Collecters?
Crossover - Pokémon & Mass Effect - Rated: M - English - Fantasy - Chapters: 7 - Words: 68,502 - Reviews: 17 - Favs: 39 - Follows: 42 - Updated: 5/22 - Published: 1/12/2013 - Reshiram, Shepard
Those Who Favor Fire by The.A.I.1502 reviews
In a universe reeling from the Blip, Isabelle Collins is shattered by her brother's death. But humanity's intent on colonizing the stars reveals an undeniable truth - Thanos was the harbinger of something much worse. Isabelle must peel back the layers of her new reality, because this time, the stakes are much higher than half of all life.
Crossover - Marvel & Mass Effect - Rated: M - English - Sci-Fi/Fantasy - Chapters: 24 - Words: 209,266 - Reviews: 17 - Favs: 49 - Follows: 64 - Updated: 5/22 - Published: 6/1/2020 - OC, P. Coulson, Harbinger, Shepard
Soul Effect by Story-lover1414 reviews
The Chosen undead didn't confront Gwyn, didn't link the first flame and as the world around him starts to to break, he created a way to escape. In a new world the chosen undead made himself king and brought the world under his command, with the whole world the only thing left were the stars beyond but space itself brings forth entirely new challenges and trials
Crossover - Mass Effect & Dark Souls - Rated: M - English - Chapters: 3 - Words: 6,746 - Reviews: 10 - Favs: 70 - Follows: 109 - Updated: 5/21 - Published: 6/7/2021
Assassin's Creed: The Mass Effect by TomTheCat1 reviews
The Reaper War, 2186. Even in the face of complete annihilation, The Milky Way still suffers from infighting, some of which has been raging for thousands of years. As the last surviving member of the Assassin Brotherhood, Abigail has one chance to bring an end to the Templars, and to Cerberus.
Crossover - Mass Effect & Assassin's Creed - Rated: T - English - Romance/Adventure - Chapters: 26 - Words: 47,212 - Reviews: 8 - Favs: 55 - Follows: 70 - Updated: 5/21 - Published: 6/23/2019 - Shepard, Samantha T., Kai Leng, OC
The Way Forward by BigGsmallp reviews
Lost and adrift in the greatest of all seas, Kuzan attempts to find himself in their new life, and hopefully find redemption
Crossover - One Piece & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 6 - Words: 17,727 - Reviews: 15 - Favs: 65 - Follows: 88 - Updated: 5/20 - Published: 2/5 - Aokiji/Kuzan, Shepard
3.4K | « Prev Page 1 .. 3 4 5 6 7 8 9 16 .. Last Next »