Mass Effect Crossovers
Filters
3.6K | « Prev Page 1 2 3 4 5 12 .. Last Next »

Great Power Comes With Great Cost by Starco101 reviews
Commander Jane Shepard’s on a mission to assemble a crew to bring the fight to the Collectors. Unfortunately she’d wish that were that simple when she starts to encounter recruits with incredible abilities with “incredible” quirks. Will Shepard retain her sanity or go max managing her new band of recruits?
Crossover - Halo & Mass Effect - Rated: M - English - Humor/Adventure - Chapters: 1 - Words: 2,325 - Reviews: 4 - Favs: 13 - Follows: 11 - Published: 1/10 - Shepard, Master Chief/John-117, OC
Mass Avengers Effect by JungleFurious reviews
It's been thirty years since Thanos, since the endgame battle between his forces and the Avengers. Now the majority of the Avengers have retired, but the mantles have been filled by their children, now full-grown adults. When a portal sends a few of the Avengers to a new universe, things are going to get hectic. The world of Mass Effect will never be the same.
Crossover - Mass Effect & Avengers - Rated: M - English - Sci-Fi/Adventure - Chapters: 10 - Words: 79,789 - Reviews: 40 - Favs: 135 - Follows: 172 - Updated: 1/9 - Published: 6/19/2021 - [Shepard, Liara T'Soni] [OC, Tali'Zorah]
Eezo-Flux Theory by BrozTheBro reviews
Humanity found out that it was not alone in the galaxy. It had earned its place in the galactic community, and made it its goal to strive for unity and prosperity. But the barrier between galaxies is fickle, and mankind will find itself staring down its counterpart. The Citadel Council comes face-to-face with the remnants of the Human Domain and the Persean Sector at large.
Crossover - Mass Effect & Starsector - Rated: M - English - Sci-Fi/Adventure - Chapters: 15 - Words: 73,275 - Reviews: 66 - Favs: 136 - Follows: 193 - Updated: 1/8 - Published: 3/11/2024 - Garrus V., Liara T'Soni, Admiral Hackett, C. Pressley
First Contact with the Angels by AntrosAscended reviews
Horus rebelled against the machinations of Chaos and sacrificed himself for the Galaxy; Lorgar's Rebellion finally seems to have become a distant memory for the Imperium. On the 30th Anniversary of the Warmaster's death, a new swath of space would be found by accident, setting new possibilities or new failures in motion. I'm Antros. I'm back to remake my first story
Crossover - Warhammer & Mass Effect - Rated: T - English - Drama/Sci-Fi - Chapters: 7 - Words: 75,044 - Reviews: 167 - Favs: 416 - Follows: 553 - Updated: 1/8 - Published: 1/10/2024 - Space Marines, Primarch/s, Councilor Tevos, Councilor Sparatus
Expanded sky by mantale3 reviews
The alliance encounter the aliens of the Milky Way Galaxy.
Crossover - Firefly & Mass Effect - Rated: T - English - Sci-Fi/Humor - Chapters: 2 - Words: 1,752 - Reviews: 7 - Favs: 9 - Follows: 12 - Updated: 1/6 - Published: 11/12/2024
Mass Effect 10 Ben Second Chance by benguin reviews
Here is a world for both Ben 10 and mass effects Fans, but basically it like any story where ben world is gone and lives in another universe to move on from the pain. I do not Own Ben 10 and Mass effect. They are owned by they respected properties of Man of Action and Bioware. Please support the official release.
Crossover - Ben 10 & Mass Effect - Rated: T - English - Sci-Fi/Romance - Chapters: 25 - Words: 78,730 - Reviews: 33 - Favs: 91 - Follows: 94 - Updated: 1/6 - Published: 2/15/2024 - [Ben T., Miranda L.] Ship, Shepard
I'm Nobody by free man writer reviews
He didn't have anything when he was born. Just a name and number. But over time, what he had grew. He, with his friends began to understand that there was more to their existence then just their name and number. They will prove that they were meant to be real. To exist. To become something more than just a Nobody. Co-written and created with Jebest4781. Fem Shepard. Now on Ao3.
Crossover - Kingdom Hearts & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 49 - Words: 841,020 - Reviews: 754 - Favs: 757 - Follows: 790 - Updated: 1/5 - Published: 9/13/2020 - Axel, Roxas, Xion, Shepard
Echoes of the Forerunners: A Covenant Unveiled by Phorus Aedelmaer reviews
The Covenant War erupts with far-reaching consequences across two universes. As the UNSC struggles to survive, they form an unexpected alliance with the species of the Citadel Council. Creative liberties will be taken with the timelines, events, and characters of both franchises.
Crossover - Halo & Mass Effect - Rated: K+ - English - Sci-Fi - Chapters: 17 - Words: 33,312 - Reviews: 158 - Favs: 173 - Follows: 252 - Updated: 1/4 - Published: 9/8/2024
Rising from the Embers of Sera by thehappy reviews
The people of Sera rebuild, spreading to the stars. Wars will be waged. Peace will be sought. The Coalition has risen from the ashes to take their right to exist in the galaxy. They will survive...no matter the cost.
Crossover - Gears of War & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 30 - Words: 454,201 - Reviews: 623 - Favs: 798 - Follows: 946 - Updated: 1/3 - Published: 12/28/2020 - OC, U. Wrex, Shepard, Councilor Tevos
One Small Step by Bardothren reviews
Izuku opens a door inside a Turian ship and it all goes downhill from there.
Crossover - Mass Effect & My Hero Academia/僕のヒーローアカデミア - Rated: K - English - Sci-Fi/Drama - Chapters: 7 - Words: 16,302 - Reviews: 40 - Favs: 104 - Follows: 127 - Updated: 1/2 - Published: 6/11/2024 - Izuku M., Nezu/The Principal - Complete
The Last Shinobi by derTraeumer reviews
Fifty thousand years ago, the shinobi world fell to the Reapers, their potential too great a threat. Akane Uchiha, the last surviving kunoichi, awakens in the modern galaxy on Eden Prime. Joining Commander Shepard's fight, she blends ancient ninja skills with advanced tech to preserve this cycle from annihilation and ensure no world shares her home's tragic fate.
Crossover - Naruto & Mass Effect - Rated: M - English - Tragedy/Mystery - Chapters: 42 - Words: 224,258 - Reviews: 58 - Favs: 203 - Follows: 254 - Updated: 1/1 - Published: 7/4/2019 - OC, Admiral Hackett, Shepard
Galactic Conflicts: Tales of First Contact by TheDoctor1998 reviews
Humanity and its allies have stood strong after the Great War with the Covenant. Follow the Systems Alliance as it goes through a first contact nearly as disastrous as the one that lead to the Great War.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 15 - Words: 84,393 - Reviews: 379 - Favs: 581 - Follows: 803 - Updated: 12/31/2024 - Published: 2/6/2023
Were it So Easy by Sigma0327 reviews
Six's life was an unending war, a crucible of unrelenting tenacity and unyielding resolve in the face of impossible odds. Every battle he fought, bullet fired, enemiy eliminated, had been a prelude to this moment. Now, once more, he stood among the few who shielded Earth from her enemies. This was to be his final stand—a final battle where the outcome seemed inevitable. or was it?
Crossover - Halo & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 14 - Words: 144,131 - Reviews: 257 - Favs: 1,149 - Follows: 1,627 - Updated: 12/29/2024 - Published: 11/9/2020 - SPARTAN-B312/Noble Six, Tali'Zorah, Miranda L., Shepard
Amongst These Stars by Warlock99 reviews
To bring a revolution that spans the galaxy is a feat very few can accomplish. To create an Empire that covers an entire galaxy is something only Naruto's people can accomplish. Amongst these stars they would rule and the reapers would feel their wrath.
Crossover - Naruto & Mass Effect - Rated: M - English - Adventure - Chapters: 6 - Words: 16,477 - Reviews: 39 - Favs: 202 - Follows: 273 - Updated: 12/26/2024 - Published: 2/22/2024 - Naruto U., Shepard
The Effect of a Horse and a Dragon by Vimesenthusiast reviews
A different decision right after being cursed leads to a very different Ranma showing up in Nerima. When he goes after Herb to beat some sense into him Ryoga takes the chance to get rid of his rival once and for all, sending both combatants to the Mass Effect universe. What changes will two martial artists and their use of ki have on the coming conflict? RanmaXTaliXKasumiXSama
Crossover - Ranma & Mass Effect - Rated: M - English - Humor/Adventure - Chapters: 12 - Words: 253,006 - Reviews: 685 - Favs: 2,404 - Follows: 2,504 - Updated: 12/24/2024 - Published: 2/2/2014 - Ranma, Kasumi G., Tali'Zorah, Samara
Quintessence Effect: Lost Paragon and Found Renegades by EvaShinobiKaiserKnight reviews
Alone that was where Lotors Generals now stood in this cycle. Betrayed by one they could trust, alone with none of their people to interact with, survivors of a genocide. For their crimes against the Citadel these four were imprisoned on Fohl Prime, Renegades some would call them. But can these Renegades save a colony and become Paragons? Let us find out for ourselves shall we.
Crossover - Mass Effect & Voltron: Legendary Defender - Rated: M - English - Chapters: 2 - Words: 10,630 - Reviews: 6 - Favs: 10 - Follows: 11 - Updated: 12/24/2024 - Published: 12/6/2024 - James V., Acxa, Ezor, Narti
Earth's Defense by shdowstep reviews
It was too late. Despite the warnings given, the Reapers made their way to Earth, and the Harvest began once more. But the Reaper's miscalculated. Humanity was not alone on Earth - Gaia and Alaya existed as well. And they already had various plans in place to survive an extinction level event.
Crossover - Fate/stay night & Mass Effect - Rated: T - English - Chapters: 4 - Words: 12,850 - Reviews: 115 - Favs: 484 - Follows: 645 - Updated: 12/23/2024 - Published: 2/5/2022
Mortal Desperations by Solthrin reviews
Arcturus Magnus, Sagittarum of the Legio Custodes, has fought for years within the webway and the Impossible City. Upon taking a near-fatal wound, the Emperor Himself removes Arcturus from the front, sending him instead to bring forth reinforcements from the Mechanicum. When something goes wrong during the return, where does this Custodian find himself?
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 12 - Words: 94,743 - Reviews: 159 - Favs: 698 - Follows: 986 - Updated: 12/23/2024 - Published: 1/17/2023 - Adeptus Mechanicus, Tali'Zorah, Shepard
Tali'Zorah: Demonologist by Sheev314 reviews
I DO NOT OWN MASS EFFECT ALSO THE FIRST TWO CHAPTERS WILL HAVE HORROR ELEMENTS IN IT Tali'Zorah's pilgrimage on a haunted world turns into an adventure with the demon known as Shepard. Can she and her new infernal friend save the galaxy from the Reapers, or will the universe burn in the fires of a new war.
Crossover - Mass Effect & Pathfinder RPG - Rated: M - English - Sci-Fi/Horror - Chapters: 2 - Words: 8,478 - Reviews: 8 - Favs: 13 - Follows: 19 - Updated: 12/21/2024 - Published: 11/19/2024 - Tali'Zorah, Shepard
On the Nature of Daylight by Ragingceliac reviews
Tali never expected to be swept up into saving the galaxy; she never expected to meet someone like Commander Shepard, Hero of the Citadel; she never expected to be working for Cerberus. But the thing that would end up surprising her the most? The weirdo on the Normandy who carried around radioactive slag in his pocket.
Crossover - Fallout & Mass Effect - Rated: M - English - Angst/Romance - Chapters: 18 - Words: 44,300 - Reviews: 49 - Favs: 128 - Follows: 211 - Updated: 12/19/2024 - Published: 8/27/2024 - [Lone Wanderer, Tali'Zorah]
Transform Effect: 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: 34 - Words: 226,454 - Reviews: 273 - Favs: 445 - Follows: 432 - Updated: 12/18/2024 - Published: 2/3/2014 - Optimus Prime, Megatron, Shepard
Titanic Impact by WetRagdoll reviews
The hero of Typhon Jack Cooper is lost in action along with his Titan BT 7274 crashing, literally into another. Does this world have a place for a pilot, if so; what about his Titan?
Crossover - Mass Effect & Titanfall - Rated: M - English - Sci-Fi/Adventure - Chapters: 3 - Words: 6,865 - Reviews: 16 - Favs: 148 - Follows: 198 - Updated: 12/17/2024 - Published: 9/8/2022 - Tali'Zorah, Garrus V., Shepard, Jack C.
Noble and Not by Requiem of Life reviews
Six is half dead by the time Jun retrieves him from Reach. Neither of them are much better when slipspace malfunctions, and the end up in a world unlike their own. How will they be able to fight in another war they have no real stake in? Watch as the two living members of Noble Team fight to save another universe, but with more allies, friends, and more
Crossover - Halo & Mass Effect - Rated: M - English - Adventure/Romance - Chapters: 1 - Words: 5,289 - Reviews: 13 - Favs: 56 - Follows: 97 - Published: 12/17/2024 - Jun-A266/Noble Three, SPARTAN-B312/Noble Six, Miranda L., Shepard
New Start Plus: in spaaaaace! by omaster43 reviews
Nick Walters and his merry band of misfits are back with a story about helping Shepard and crew fight giant eldritch robot abominations, most likely through Dumb magic and crazy shenanigans This is a continuation of my previous story, so reading that one first is recommended. but I'm not your nanny you wanna be confused that's your choice. Oc-insert, just came from Dragon age
Crossover - Game X-overs & Mass Effect - Rated: M - English - Humor/Adventure - Chapters: 22 - Words: 494,021 - Reviews: 177 - Favs: 421 - Follows: 486 - Updated: 12/16/2024 - Published: 6/6/2023 - Garrus V., Tali'Zorah, Shepard - Complete
Saiyan Effect by bored peasant reviews
The Citadel Council weren't ready for a species with the power of the saiyans at their back.
Crossover - Mass Effect & Dragon Ball Super - Rated: T - English - Sci-Fi/Adventure - Chapters: 24 - Words: 144,303 - Reviews: 979 - Favs: 2,329 - Follows: 2,771 - Updated: 12/14/2024 - Published: 8/9/2017 - Son Gohan, Son Goku, Vegeta
3.6K | « Prev Page 1 2 3 4 5 12 .. Last Next »