Mass Effect Crossovers
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Shadows by Blackwolf501 reviews
The Cycle begins again but instead of finding a divided galaxy the Reapers face the wrath of a united front. The Machines thought the ninjas dead, their shinobi empire shattered, but they were wrong because from the ashes rose one of the most deadly warriors. The Kaiser, Uchiha Naruto.
Crossover - Naruto & Mass Effect - Rated: M - English - Adventure/Romance - Chapters: 84 - Words: 406,905 - Reviews: 1221 - Favs: 1,255 - Follows: 1,381 - Updated: 4/5 - Published: 9/29/2013 - Naruto U.
Mass Wars Episode 1 by Fantasymaker76 reviews
It is an age of tensions in the galaxy, two galactic governments compete with each other over who has control of the galaxy, the Citadel Council and the Republic of Allied Species. With the discovery of an ancient Prothean Beacon on the Republic planet Eden Prime, both governments see it as a chance to build bridges between them and send a joint contrusted ship to investigate.
Crossover - Star Wars & Mass Effect - Rated: M - English - Drama/Sci-Fi - Chapters: 15 - Words: 81,514 - Reviews: 184 - Favs: 92 - Follows: 115 - Updated: 4/4 - Published: 3/3/2019
Star Effect by stormwolf3710 reviews
What if something was found on the moon and a entire universe was created to hide its secrets? What if Earth used those designs to create their own navy? And what if it was the Asari who first made contact? A idea I've been sitting on for some time.
Crossover - Star Wars & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 6 - Words: 42,706 - Reviews: 129 - Favs: 717 - Follows: 1,036 - Updated: 4/4 - Published: 7/22/2018
The Ghoul Effect by storyseeker7 reviews
Humans and Ghouls two species who by natures design should have destroyed one or the other in bloody war of survive. But the actions of a few mange prevent such an event from occurring, and now two species work together for a better future. How will they react to a galaxy for of different races, and how will the galaxy react to the unique relationship between these two races?
Crossover - Mass Effect & Tokyo Ghoul/東京喰種トーキョーグール - Rated: M - English - Sci-Fi - Chapters: 16 - Words: 121,044 - Reviews: 123 - Favs: 348 - Follows: 439 - Updated: 4/3 - Published: 1/2/2019 - J. Garson
Once a Rookie, Always a Rookie by Twisted Fate MK 2 reviews
(Credit to Adrasos on Archive and his story, Prepare to Drop, for the idea.) On the way down to New Mombasa, Rookie falls into the Slipspace Rupture and ends up crashing down on Menae, high above Palaven, while Shepard tries to find and rescue the new Primarch. From there, the war itself will shift and the fighting persists, but who knows what an ODST will add to the mix.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure - Chapters: 44 - Words: 223,451 - Reviews: 353 - Favs: 680 - Follows: 992 - Updated: 4/3 - Published: 9/27/2018 - Rookie, Shepard, Javik
The Boundary Effect by Touhoufanatic reviews
2137 When an Alliance exploration ship is fired upon by a Turian cruiser, it shall unleash them upon the galaxy, and the Galaxy is not ready for their power, their abilities, or their lack of common sense! Human/Youkai/Lunarian Alliance. Mass EffectXTouhou Crossover AU. Too many characters to write. Please enjoy and review. update delayed due to writers block.
Crossover - Mass Effect & Touhou Project - Rated: T - English - Sci-Fi/Fantasy - Chapters: 35 - Words: 256,738 - Reviews: 495 - Favs: 1,066 - Follows: 1,301 - Updated: 4/3 - Published: 5/13/2017
The Shadow's Information by Cinn
Tanusha 'Kayo' Kyrano is International Rescue's head of security. Liara T'Soni is looking for a friend. Their paths cross when their searches suggest The Shadow Broker has information they both want.
Crossover - Thunderbirds & Mass Effect - Rated: T - English - Adventure - Chapters: 1 - Words: 4,240 - Favs: 1 - Published: 4/2 - Kayo, Liara T'Soni - Complete
Ripples in the Stream by Vyrexuviel reviews
Something terrible has happened. Eden Prime was a disaster, but from the ashes of a hero's pyre rises a new hope. A very different warrior rises to take the place of a fallen legend. Time to quit dreaming. Time to Awaken. ME Universe, Out-of-universe character(s) with D&D roots; some Shadowrun influence. (Will update erratically, please be patient!)
Crossover - Mass Effect & Dungeons and Dragons - Rated: M - English - Adventure/Sci-Fi - Chapters: 20 - Words: 200,023 - Reviews: 33 - Favs: 123 - Follows: 196 - Updated: 4/1 - Published: 5/1/2015 - J. Garson, Liara T'Soni, Jack, Aethyta
Rise of a wolf by redwolves12111 reviews
What if Naruto was born years before the nine-tailed fox attack but his chakra coils was burned on that night this is about Naruto's Journey Among the Stars
Crossover - Naruto & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 1 - Words: 5,061 - Reviews: 3 - Favs: 10 - Follows: 10 - Published: 4/1
SBAR - Squished Beyond All Recognition by nicomnovillo reviews
Following a cataclysmic event, an Imperial Storm Trooper finds himself thrown into a universe far different from his own, where there is no Emperor (yet), no Chaos (that are known), and on top of it all, Humans openly working with Aliens. His adaptability as both human and Storm Trooper will be put to the test as he tries to find his way in this new environment.
Crossover - Warhammer & Mass Effect - Rated: M - English - Adventure/Humor - Chapters: 4 - Words: 60,894 - Reviews: 30 - Favs: 49 - Follows: 89 - Updated: 3/31 - Published: 2/25 - Dark Eldar, Imperial Guard, Liara T'Soni, Javik
The Light Beyond by Saint Reaper101 reviews
Earth has been decimated, its lands infested with hive, taken and fallen. The last remnant of the light grows brighter at the defeat of Oryx. A Baron rebels against his Kell and House to reclaim what his race once had, and an object in deep space is discovered by Dead Orbit. Discovering a new galaxy full of races that may help bring hope to all under the banner of the Traveler.
Crossover - Mass Effect & Destiny - Rated: T - English - Sci-Fi/Adventure - Chapters: 32 - Words: 216,620 - Reviews: 371 - Favs: 566 - Follows: 652 - Updated: 3/31 - Published: 5/20/2016
Broken Odyssey by Damie243 reviews
It is the year 3350, the races of the Milky Way have long put aside their grievances to unite under a single banner. They held on against dangerous threats and hoped to attain actual peace. After fighting the remnants of an extrgalactic empire, forces of the MWR shall be thrust into another galaxy that's so much like their own. A galaxy that just won its war for survival.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 5 - Words: 24,735 - Reviews: 12 - Favs: 60 - Follows: 89 - Updated: 3/30 - Published: 2/7
The End of Eternity: Rise of the Terran Alliance by Icarus636 reviews
No Gods, No Kings REWRITTEN: Through intervention the dream of Rapture never became a nightmare, instead new technologies and beliefs pave the way for Humanity to unite as one and seek a new future among the stars. The Council finds itself confronting a civilization that has surpassed every technological shackle and overcame every obstacle thrown their way: The Terran Alliance.
Crossover - Mass Effect & BioShock - Rated: T - English - Sci-Fi/Mystery - Chapters: 11 - Words: 127,499 - Reviews: 120 - Favs: 544 - Follows: 722 - Updated: 3/30 - Published: 8/6/2019 - Tali'Zorah, Shepard, Eleanor L., Elizabeth
DOOM Effect: V2 by zrocker119 reviews
Alexander Carter didn't accomplish anything truly worth noting during his life. So when he was offered a chance to make a difference in the overgrowing universe he accepted without much argument on his part. Now armed with the skills and knowledge of one of the deadliest and most feared warrior in existence, The Doom Slayer, Alex will make sure that all will know his name.
Crossover - Doom & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 4 - Words: 19,826 - Reviews: 308 - Favs: 1,220 - Follows: 1,633 - Updated: 3/29 - Published: 3/25/2019 - Doomguy, Shepard
The Rogue's of Mass Effect by Psyman21 reviews
When scouting a Red Legion secret project, fireteam Rogue's actions bring them to a new universe where the Darkness they have always fought is replaced by another form of it. Now surrounded by friend's and foes alike, both human and alien, can these legendary Guardian's change the fate of this Universe and it's inhabitants? Only time can tell.
Crossover - Mass Effect & Destiny - Rated: M - English - Adventure - Chapters: 8 - Words: 32,341 - Reviews: 64 - Favs: 176 - Follows: 252 - Updated: 3/29 - Published: 5/22/2018
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: 15 - Words: 19,825 - Reviews: 1 - Favs: 20 - Follows: 29 - Updated: 3/29 - Published: 6/23/2019 - Shepard, Samantha T., Kai Leng, OC
Starwatch: Compact by CruxMDQ reviews
Sequel to Starwatch. After the battle of the Citadel and Sovereign's defeat, the Citadel Spectres and the Alliance agency that succeeded Overwatch must pick up the pieces and gear up their efforts to prepare for the looming threat, while also dealing with the inertia of their parent governments, the machinations of shadowy forces, and competing initiatives.
Crossover - Mass Effect & Overwatch - Rated: M - English - Sci-Fi/Adventure - Chapters: 2 - Words: 7,649 - Reviews: 3 - Favs: 25 - Follows: 28 - Updated: 3/29 - Published: 2/15 - Liara T'Soni, Javik, Amélie L./Widowmaker, Lena O./Tracer
Destiny Lost by Twisted Fate MK 2 reviews
The Gods left remnant together, with the statement they would never return to it or influence it. Only, that wasn't true, was it? The God of light, ever the hypocrite and liar, didn't abandon Remnant. Instead, he reincarnated someone to do his bidding and bring Remnant to them. Cue, the now dead Pyrrha Nikos and the God of Darkness' ideas. / Supporter Requested by Espacole
Crossover - Mass Effect & RWBY - Rated: T - English - Adventure - Chapters: 18 - Words: 91,161 - Reviews: 202 - Favs: 255 - Follows: 382 - Updated: 3/29 - Published: 5/5/2019 - Legion, Pyrrha N., God of Darkness
Powerplay by mare.imbrium.1 reviews
On the Citadel, heart of the galaxy, power begets power. The weak are weak, the strong are strong, and the universe makes sense. But when a new species stumbles onto the galactic scene bringing mysterious technology, the delicate balance is toppled. Now all, from the meek to the near-omnipotent, are called upon to fight and struggle for their beliefs.
Crossover - Mass Effect & Elite Dangerous - Rated: M - English - Chapters: 8 - Words: 33,462 - Reviews: 12 - Favs: 28 - Follows: 44 - Updated: 3/28 - Published: 3/9 - J. Garson, Garrus V., Tali'Zorah, Thane K.
The Dead Effect by SaibotReaper Productions reviews
Humans, Asari, Turians, Salarians. So many species all of whom have intermingled in so little time, all that have progressed with technologies and ideals yet...belief can be the deadliest of all these things, unitology brings change a belief that all can ascend to a higher plain a faith I once called my own. Yet we are still blind to it. For the marker changes all to "It's Will."
Crossover - Mass Effect & Dead Space - Rated: M - English - Horror/Sci-Fi - Chapters: 4 - Words: 10,002 - Reviews: 7 - Favs: 33 - Follows: 43 - Updated: 3/28 - Published: 10/25/2019 - J. Garson, Garrus V., Liara T'Soni, Isaac C.
Grave Effect by SaibotReaper Productions reviews
Devils and Gods are two halves of the same whole. Life is sown by those whom many would consider gods but the created revolt and destroy their godly creators only to create in their wake the devils who would destroy what they themselves sought to call their own, but can devils rise to create once more or will the cycle of revolt continue on in a new galaxy.
Crossover - Halo & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 6 - Words: 12,269 - Reviews: 36 - Favs: 167 - Follows: 232 - Updated: 3/28 - Published: 7/27/2019 - Gravemind, 2401 Penitent Tangent, J. Garson, Leviathan
Man off the Moon by FiendLurcher reviews
The story of an unyielding man thrust into a galaxy of myriad grays—of questioning the past and of walking the same steps, wondering whether any answers beyond death lie at the end of that long, ever-winding road. (Ch38@10.1k words)
Crossover - Fate/stay night & Mass Effect - Rated: T - English - Sci-Fi/Fantasy - Chapters: 37 - Words: 690,246 - Reviews: 3078 - Favs: 3,922 - Follows: 4,421 - Updated: 3/28 - Published: 4/15/2018 - Archer
Blue Flames by n7kairos reviews
Shepard ends up on Middle Earth after being caught up in the Crucible explosion. Follow her now as she slowly but surely becomes embroiled in a new war.
Crossover - Mass Effect & Lord of the Rings - Rated: M - English - Fantasy/Sci-Fi - Chapters: 6 - Words: 13,930 - Reviews: 8 - Favs: 31 - Follows: 51 - Updated: 3/28 - Published: 12/6/2019 - J. Garson, Gandalf
Mass effect rise of the giants by micelzod reviews
The systems Alliance has lied to the US, European Federation and Russia that there is life out in space hoping to give the Citadel Council a good impression but when a colonization fleet encounters a already colonized planet then the secrets out in a giant way.
Crossover - Mass Effect & EndWar - Rated: M - English - Adventure/Hurt/Comfort - Chapters: 10 - Words: 48,825 - Reviews: 45 - Favs: 86 - Follows: 99 - Updated: 3/28 - Published: 7/26/2019
The Lone Wolf Of The Normandy by SSJ Lone Wolf reviews
Noble Six after managing to survive the fall of Reach is upgraded with Forerunner augmentations, armor, weapons and his first A.I partner is transported to a planet known as Eden Prime. A Systems Alliance colony that just happens to be under attack by a army of synthetics. Well like Carter said "wouldn't be a Noble mission if it were easy."
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 11 - Words: 74,777 - Reviews: 1224 - Favs: 1,456 - Follows: 1,819 - Updated: 3/27 - Published: 8/9/2016 - [SPARTAN-B312/Noble Six, J. Garson] Garrus V., Tali'Zorah
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