Mass Effect Crossovers
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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: 22 - Words: 173,574 - Reviews: 189 - Favs: 467 - Follows: 557 - Updated: 5/14 - Published: 1/2/2019
The Return of Hope by Masso 2010 reviews
Commander Shepard is dead. Knowing that they needed someone to complete his work fighting against the Reapers The Illusive Man set his sights on the next best thing, Humanities greatest hero. The only problem is that Superman gave up on hero work a long time ago and has no intention on returning but what will the Man of Steel do when he discovers what The Collectors are doing.
Crossover - Superman & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 5 - Words: 40,276 - Reviews: 90 - Favs: 200 - Follows: 225 - Updated: 5/14 - Published: 7/10/2020 - Clark K./Kal-El/Superman, Miranda L.
Metroid Effect by KKD Silver reviews
M Rated for potential violence, gore, and romantic content. Reader discretion is advised. Metroid/Mass Effect Merged AU, post-Metroid Fusion. Through a hyperdrive mishap, Samus finds herself in the far-flung future, far from the worlds she knew. Now, she must help the crew of the Normandy on their mission to stop the rogue spectre Saren. Collab with Pikatwig
Crossover - Metroid & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 1 - Words: 6,148 - Reviews: 4 - Favs: 8 - Follows: 12 - Published: 5/14 - Samus A., Garrus V., Tali'Zorah, Shepard
Unforeseen turns of the war by Batrix2070 reviews
When everything seems to be going in the right direction Shepard learns of an old accident that forces him to seek allies in other universes.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 5 - Words: 26,139 - Reviews: 3 - Favs: 11 - Follows: 14 - Updated: 5/13 - Published: 1/26 - Master Chief/John-117, SPARTAN-B312/Noble Six, Admiral Hackett, Shepard
Seven seas by matthewtippie
In this story we talk about a future tv series that I came up with all by myself. A series that has adventure, romance, and of course awesome in it. A series with pirates, marines, fish people, and sea monsters. A series called seven seas. Hope you enjoy the ride your going to love it I hope. Please review, follow and take care. That and be honest with me ok?.
Crossover - One Piece & Mass Effect - Rated: T - English - Adventure/Romance - Chapters: 1 - Words: 388 - Favs: 1 - Follows: 1 - Published: 5/13
The Yorha effect by Drarnegas reviews
5 years after the end of the 14 machine war, Yorha starts the long effort of rebuilding earth for mankind. When suddenly a new threats comes to their world. (Slight different ending of Nier automate and head-cannon. Slight OP Yorha.)
Crossover - Mass Effect & Nier - Rated: M - English - Sci-Fi - Chapters: 17 - Words: 36,162 - Reviews: 74 - Favs: 304 - Follows: 431 - Updated: 5/13 - Published: 5/13/2019
Legend of Korra: Andromeda by James118 reviews
After 600 years of sleeping in dark space, the Ark Hyperion reaches the Andromeda galaxy but the crew discovers that they're lost. But luckily they find a planet near them and send the Pathfinder team to explore the planet they soon discover to be the world of the Avatar. OC x Korra and OC x Kya.
Crossover - Mass Effect & Legend of Korra - Rated: M - English - Adventure/Sci-Fi - Chapters: 3 - Words: 12,834 - Reviews: 4 - Favs: 17 - Follows: 22 - Updated: 5/12 - Published: 3/19 - [OC, Korra]
The third way by Konradoziom reviews
Mankind has finally united after a long time. To do this, it was necessary to discover the ruins of an ancient civilization and a wrecked spaceship. But the ship and the ruins have a completely different technology. Is it a gift from heaven that allows for enormous development in many directions, or is it a danger of their existence? Humanity will have to find out about it.
Crossover - Starblazers & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 11 - Words: 23,651 - Reviews: 58 - Favs: 63 - Follows: 89 - Updated: 5/11 - Published: 2/20 - Alex W./M. Kodai, A. Avatar/J. Okita, Nihlus K.
Force, Intent, Effect by WayfinderRed reviews
StarWarsAU: Palpatine is successfully killed and the Empire never rises. Mass effectAU: mostly scaling fixes to make the story work better. A Republic Unknown Regions exploration fleet discovers a strange object in deep space while investigating the disappearance of a colony fleet. Meanwhile the Alliance prepares to launch the Normandy on it's first mission. M for language/in case
Crossover - Star Wars & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 2 - Words: 23,073 - Reviews: 23 - Favs: 68 - Follows: 79 - Updated: 5/10 - Published: 4/10 - OC, Shepard
The Horizons Beyond by JJ2161 reviews
When two worlds with predefined mindsets, knowledge, and ideals have to throw all of that out the window after contacting a new player. Humanity. (Babylon 5/Mass Effect AU crossover with a Star Trek-based Humanity and Stargate-based Precursors)
Crossover - Babylon 5 & Mass Effect - Rated: T - English - Chapters: 19 - Words: 163,996 - Reviews: 282 - Favs: 518 - Follows: 646 - Updated: 5/10 - Published: 9/29/2017
Mass Riddick Effect by BraveZero reviews
"You know," Riddick said from the shadows, his voice deep and deadly, "It's pretty fucking unwise to make threats on a ship that isn't yours." -Commander Charlotte Jane Shepard is stuck working with Lieutenant Commander Richard B. Riddick and they really dislike each other. Can they set aside differences to save a galaxy? ME1, mature, and lots of canon divergence. (Revamped)
Crossover - Pitch Black / Riddick & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 3 - Words: 20,752 - Reviews: 20 - Favs: 91 - Follows: 117 - Updated: 5/10 - Published: 6/2/2014 - Riddick, D. Anderson, Nihlus K., Shepard
All the Stars by BlueWay reviews
When the Long Night of Solace is evaporated over Reach via the weaponized usage of a Slipspace Drive, it ferries with it in its swallowed sections the Covenant Empire and, more horrifyingly, the desperate measures that the UNSC used to fight them. When they are found in a universe on the precipice of their own history, the meaning of the term "Mass Effect" will change forever.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 33 - Words: 571,504 - Reviews: 855 - Favs: 1,222 - Follows: 1,532 - Updated: 5/10 - Published: 6/8/2018 - SPARTAN-B312/Noble Six, Rookie
The Children of Humanity: Kino's Journey by Dairene reviews
Over two centuries after the Union's Ambrian Traverse Expedition secretly left for the Large Magellan Cloud, Kino-221 is among a number of scouts dispatched in an attempt to discern the situation in the Milky Way... Sequel spin-off of Children of Humanity
Crossover - Mass Effect & Nier - Rated: M - English - Chapters: 2 - Words: 2,635 - Reviews: 2 - Favs: 8 - Follows: 12 - Updated: 5/10 - Published: 4/20
Operation Phoenix & Raven by Ordo Warrior reviews
Continuing from Best of Spartans and Spectres. Commander Shepard has been captured and Noble Six turns to the one group that can help save her, but will that help come at too great of a cost?
Crossover - Halo & Mass Effect - Rated: M - English - Chapters: 52 - Words: 171,955 - Reviews: 90 - Favs: 171 - Follows: 221 - Updated: 5/9 - Published: 10/21/2014 - SPARTAN-B312/Noble Six, J. Garson
Second Chance by Sid117 reviews
First officer Raiden Ramirez was just a regular Alliance officer serving aboard Supply cruiser SSV Leningrad . Upon attack by Collectors , a wish he made changed his life forever.
Crossover - Mass Effect & Azur Lane/碧蓝航线 - Rated: M - English - Humor/Romance - Chapters: 13 - Words: 12,030 - Reviews: 8 - Favs: 26 - Follows: 34 - Updated: 5/8 - Published: 8/30/2020
Mass Effect: Maelstrom Siblings by Leaf Ranger reviews
When faced with protecting an entire galactic community, it's always good to have friends and squad-mates at your side. But it's even better when you've got your brother with you as well. Get ready galaxy, because here come Alicia and Naruto Shepard, the Maelstrom Siblings. Rated M for swearing, action, gore, and implied sexual situations.
Crossover - Naruto & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 23 - Words: 307,180 - Reviews: 467 - Favs: 985 - Follows: 1,169 - Updated: 5/7 - Published: 3/31/2016 - [Naruto U., Tali'Zorah] [Liara T'Soni, Shepard]
BattleTech: The Mass Effect by IX404 reviews
During the beginning of the Reaper War, Shepard is informed of a Prothean artifact claimed by Cerberus and sent to stop them. Little does he know is that soon, he will find himself and his crew in a world both familiar and alien to their own. (Hiatus over. Expect slow paced updates.)
Crossover - Mechwarrior/Battletech & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 8 - Words: 45,570 - Reviews: 32 - Favs: 71 - Follows: 90 - Updated: 5/7 - Published: 12/21/2020 - Garrus V., Shepard, James V., Nyreen K.
Transform Effect 1: Rise a Prime by RECKLESS SOLDIER-MS reviews
Two galaxies isolated from one another meet for the first time, just as the war between two opposing factions escalates. But the galaxy has more than first contact with a race of machines to worry about, ideals will be tested as an ancient evil returns to begin a cycle of genocide. A leader from the ranks of the Autobots must rise to stop both the Decepticons and the Reapers.
Crossover - Transformers/Beast Wars & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 32 - Words: 212,517 - Reviews: 238 - Favs: 305 - Follows: 305 - Updated: 5/7 - Published: 2/3/2014 - Optimus Prime, J. Garson
Ripples in the Stream by Vyrexuviel reviews
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 with D&D roots; some Shadowrun influence. (Will update erratically, please be patient!) Co-Authored by MasterMind4892! Book One Complete!
Crossover - Mass Effect & Dungeons and Dragons - Rated: M - English - Adventure/Sci-Fi - Chapters: 30 - Words: 342,505 - Reviews: 44 - Favs: 179 - Follows: 251 - Updated: 5/7 - Published: 5/1/2015 - [Jack, OC] Liara T'Soni, Kasumi G.
Rise of the Union by Dairene reviews
Side story of Children of Humanity- After uniting Androids and Machines, the Union of Earth and Artemis continues its steady expansion across the stars...
Crossover - Mass Effect & Nier - Rated: M - English - Sci-Fi/Supernatural - Chapters: 12 - Words: 26,108 - Reviews: 13 - Favs: 26 - Follows: 44 - Updated: 5/6 - Published: 4/22/2020
Unwavering Eagle by Crazzytony reviews
Just a short story I wanted to write involving three of my most favorite universes. I hope you enjoy the read!
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 1 - Words: 2,445 - Reviews: 2 - Favs: 3 - Follows: 2 - Published: 5/6 - Master Chief/John-117, Arbiter, Shepard - Complete
Galatic effect by Shadowking001 reviews
If mass effect and star wars come in what will happen? Who will survive?
Crossover - Mass Effect & Star Wars - Rated: M - English - Adventure/Sci-Fi - Chapters: 1 - Words: 1,353 - Reviews: 4 - Favs: 7 - Follows: 3 - Published: 5/5 - OC, OC
Jumping Eldarlike to Another Universe by Vivori reviews
A half-Eldar, hidden secret of her father, a goddess of healing that does not know how to fight, a simple Seer and her best friend Howling Banshee got the one way ticket to fell into the ME Universe. Of course to add problems to their opportunity of new life, the Reapers are coming to cleanse this universe of every sentient being. What to do? What to do indeed?
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 6 - Words: 30,247 - Reviews: 61 - Favs: 94 - Follows: 124 - Updated: 5/3 - Published: 4/19/2020 - Eldar, Primarch/s, Liara T'Soni, Shepard
A New Future by EreborMarkus reviews
A discovery was made earlier than it should have been, and it was done by two people that had no business being there.
Crossover - Harry Potter & Mass Effect - Rated: M - English - Adventure/Romance - Chapters: 1 - Words: 3,817 - Reviews: 13 - Favs: 90 - Follows: 158 - Published: 5/2 - Harry P., Hermione G.
Crimson Incandescence by DisgruntledJaeger reviews
A radically altered retelling of the Mass Effect Trilogy combined with the RWBY universe. WARNING: this is a heavily altered alternate universe fic, featuring vast liberties taken with both sides of the lore, gods and Reapers. Proceed at your own interest.
Crossover - Mass Effect & RWBY - Rated: T - English - Adventure/Sci-Fi - Chapters: 5 - Words: 37,400 - Reviews: 33 - Favs: 97 - Follows: 152 - Updated: 5/1 - Published: 3/5 - Garrus V., D. Anderson, Ruby R.
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