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The Wayfarer by Umbral Choir reviews
In the twilight of the universe the Ihan-rii, a forgotten sect of protoss, face an uncertain future in a realm consumed by the hounds of the void and their dark master. Xiltar, the last member of the umbral choir will guide his people into a fate beyond the designs of the Xel'naga only to find that he traded one war of annihilation for another.
Crossover - StarCraft & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 42 - Words: 184,847 - Reviews: 39 - Favs: 92 - Follows: 121 - Updated: 5h - Published: 2/5
Here There Be Monsters by J-Litt-Press
An ancient threat emerges from the darkness to threaten all life in the galaxy. The only ones who are brave enough and crazy enough to stop it are a mismatched crew of warriors, smugglers, and scientists. They face the worst the galaxy has to offer and face down the most terrifying monsters from the darkest regions of space. It's a fight for survival.
Crossover - Star Wars & Mass Effect - Rated: M - English - Horror/Adventure - Chapters: 1 - Words: 1,128 - Favs: 2 - Follows: 3 - Published: 6/21
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: 4 - Words: 22,864 - Reviews: 55 - Favs: 241 - Follows: 374 - Updated: 6/21 - Published: 1/17 - Adeptus Mechanicus, Tali'Zorah, Shepard
Angelus Sanguis Humani by Ronin2106 reviews
Sanguinius manages to overcome Horus and with his final breath, he saves his sons and the Imperium, yet his soul is not taken by Dark Gods. Instead, he is reborn in a universe, where Humanity is only making it's first steps into the Galaxy, and is fighting the First Contact War. Imperium and Emperor are gone, but Humanity is here, and the Great Angel will never abandon it.
Crossover - Warhammer & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 4 - Words: 38,738 - Reviews: 161 - Favs: 458 - Follows: 578 - Updated: 6/21 - Published: 6/10 - Primarch/s, D. Anderson, Admiral Hackett
On the Shoulders of Giants by Shoot The Runner reviews
Two galaxies thrown together by a cosmic fluke. On one side of the galaxy, the war-weary UNSC vows to rebuild and become a giant in the stars so that they will never be so helpless again. Whilst another humanity is still finding its feet in the Citadel, with treachery and politics hindering its progress. How does the merging of two galaxies impact the course of all of their fates?
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 1 - Words: 9,844 - Reviews: 22 - Favs: 109 - Follows: 128 - Published: 6/20 - Master Chief/John-117, T. Hood, Shepard, D. Udina
Paracausal Effect by Aquilarion reviews
After discovering what Light and Dark truly were— after finding Balance in their universe, Elsie Bray discovers a secret to the Guardian that forces him to act. Forces them both to act. The Darkness moves once again. Only this time, not in their universe. [FemShep] [M for safety]
Crossover - Mass Effect & Destiny - Rated: M - English - Adventure/Sci-Fi - Chapters: 5 - Words: 22,683 - Reviews: 15 - Favs: 65 - Follows: 110 - Updated: 6/20 - Published: 3/12 - Liara T'Soni, Shepard, OC, Exo Stranger
Vengeance of the Suit Rat by SympathyForTheQuarians reviews
On an ordinary day in the Migrant Fleet in 2182, a quarian picks up the Death Note. Nothing good happens for anyone outside the Migrant Fleet. AU, made out of necessity to show you that ya'll are writing too many stories about Light Yagami and not being creative enough.
Crossover - Death Note & Mass Effect - Rated: T - English - Supernatural/Horror - Chapters: 13 - Words: 6,642 - Reviews: 7 - Favs: 13 - Follows: 10 - Updated: 6/20 - Published: 9/14/2022 - Aria T'Loak - Complete
Never Fade Away by Ideas-Guy reviews
Lives are cheap and money is everything. That's how the orphanage made its money - lending out children for human expirementation. L is an old man at the age of fifteen and he knows he doesn't have much time left. All that mattered was getting out, but he soon learns that the world is a lot bigger than Night City. And that the galaxy is a lot bigger than Earth.
Crossover - Mass Effect & Cyberpunk 2077 - Rated: M - English - Adventure/Drama - Chapters: 27 - Words: 135,334 - Reviews: 217 - Favs: 750 - Follows: 843 - Updated: 6/19 - Published: 10/31/2022 - Shepard, V
Not in one's own plate by Sicht reviews
Time has become an elusive concept, leaving V uncertain if she has been trapped for a year or even longer. Amidst lingering anxiety and worries, she clings to the belief that her sacrifices were not in vain, desperately seeking a glimmer of hope for a meaningful outcome to her plight. Since hope dies last.
Crossover - Mass Effect & Cyberpunk 2077 - Rated: M - English - Adventure/Sci-Fi - Chapters: 9 - Words: 44,973 - Reviews: 14 - Favs: 65 - Follows: 119 - Updated: 6/18 - Published: 9/8/2022 - V, OC
Seven troubles - one response by Sicht reviews
The Yearly Societal Rendezvous on Trimidia transforms into a battleground of concealed motives and power clashes shaped by the revolutionary 'Mass Effect' technology. The consequences of a failed Rendezvous loom large, as it threatens to disrupt delicate balances, even back home on Earth.
Crossover - Mass Effect & Cyberpunk 2077 - Rated: M - English - Mystery - Chapters: 3 - Words: 10,481 - Reviews: 3 - Favs: 11 - Follows: 22 - Updated: 6/18 - Published: 11/3/2022 - D. Anderson, Admiral Hackett, Shepard
Mass Effect: A Guardsman's Tale by IX404 reviews
There are many tales of extraordinary heroes within the Imperium of Man, but every once in a while, one finds one that is unique among them all. This is the tale of a Guardsman that not only upheld his duty to the Emperor of Mankind, but also enabled the survival of a distant, and alien, galaxy.
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi/Drama - Chapters: 6 - Words: 37,256 - Reviews: 46 - Favs: 186 - Follows: 268 - Updated: 6/18 - Published: 3/18 - Imperial Guard, OC, Shepard
Stellar Effect by Brandon Storm reviews
The Reapers trap was perfect in its design. Their execution refined over billions of years, their technology refined since the dawn of time itself. Right up until Someone Broke the Trap!
Crossover - Mass Effect & Stellaris - Rated: T - English - Adventure/Sci-Fi - Chapters: 46 - Words: 204,540 - Reviews: 197 - Favs: 316 - Follows: 433 - Updated: 6/18 - Published: 8/7/2022
The Prelude of War by Indigard reviews
A very different Mass Effect galaxy encounters a strange and relentless invader that is on constant hunger for Biomass but they never know it's just a glimpse of what coming for them. Featuring: alternative history for every species, a bigger and more populated galaxy, cunning Asari, militarized and germanized human empire.
Crossover - Warhammer & Mass Effect - Rated: T - English - Chapters: 9 - Words: 155,329 - Reviews: 37 - Favs: 85 - Follows: 92 - Updated: 6/17 - Published: 11/6/2021 - Imperial Guard, Tyranids, OC, Shepard
Saga of the Bridgers-Year 6 by Ganel750 reviews
A new Menace. As the war between the Coalition and the Empire enters a standstill, entire colonies at the edge of Wild Space start disappearing. When a new enemy will prove to be a threat to both sides in the conflict, enemies will have to join forces to prevent this new menace from conquering the galaxy.
Crossover - Star Wars & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 31 - Words: 176,295 - Reviews: 7 - Favs: 24 - Follows: 19 - Updated: 6/17 - Published: 8/17/2022 - Thrawn, OC, Ezra B., 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: 45 - Words: 777,857 - Reviews: 1272 - Favs: 1,773 - Follows: 2,126 - Updated: 6/16 - Published: 6/8/2018 - SPARTAN-B312/Noble Six, Rookie
Feared Reverence by ayab reviews
376 years after the battle between heaven and earth. Two humans have achieved godhood. Using their power to guide humanity to the stars. How will the galaxy react to see a species so advanced yet so primitive? So powerful yet not wanting to use their power. They are what the citadel race aspires to be and hates because of their jealousy. (up for adoption.)
Crossover - Naruto & Mass Effect - Rated: T - English - Fantasy/Sci-Fi - Chapters: 6 - Words: 16,020 - Reviews: 59 - Favs: 189 - Follows: 262 - Updated: 6/16 - Published: 1/14
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: 10 - Words: 60,618 - Reviews: 834 - Favs: 2,718 - Follows: 3,445 - Updated: 6/15 - Published: 3/25/2019 - Doomguy, 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: 2 - Words: 34,054 - Reviews: 40 - Favs: 159 - Follows: 189 - Updated: 6/14 - Published: 6/6 - Garrus V., Tali'Zorah, Shepard
The Eternal Lord 40k - ME by HellFox83 reviews
A battle against the forces of Chaos strands a Necron lord in the galaxy of Mass Effect. With what's left of his dynasty under his banner, Veronakh Lord of Solvatakh intends to lead his people to glorious conquest. Can Commander Shepard stop the Collectors and curtail the ambitions of the Necrons?
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 27 - Words: 321,060 - Reviews: 109 - Favs: 365 - Follows: 492 - Updated: 6/14 - Published: 6/13/2020 - Necrons, Shepard
Temporal Displacement with Gamer Characteristics by Keywielder reviews
As if shifting between the real world and Elite-verse when I had just graduated from Senior High for a few months wasn't enough, now they're telling me that it was a goddamned Beta THE WHOLE TIME, after FIVE FUCKING YEARS of God knows what in the actual fuck and ONLY NOW I get the full release! Fuck it. Let's just roll with this crap... Gamer, OC, SI. Current World: Mass Effect.
Crossover - Mass Effect & Elite Dangerous - Rated: M - English - Sci-Fi - Chapters: 5 - Words: 56,044 - Reviews: 47 - Favs: 252 - Follows: 333 - Updated: 6/14 - Published: 11/20/2021
Upon a Lion's Tooth by The Shaper
"That's the thing about Light, you never know where it'll shine." Sensing the final plays of the struggle between Light and Dark are about to be made, the Nine make a gambit of their own with an unlucky Guardian.
Crossover - Mass Effect & Destiny - Rated: M - English - Adventure/Sci-Fi - Chapters: 1 - Words: 725 - Favs: 6 - Follows: 13 - Updated: 6/14 - Published: 6/10 - Legion, Shepard, Ghost, Guardian
Boundaries Displaced by Hirowolfgang reviews
When a dormant Mass Effect is activated by Battarian pirates, it is affected by a mysterious phenomenon that displaces the Dreikruz en route to their final confrontation with the Quaestors. Now stranded Mitsuba and the Dreikruz have to put differences aside in order to work together with the Normandy SR-2 against the Collectors and the following Reaper war. For better or worse.
Crossover - Mass Effect & Super Robot Wars - Rated: M - English - Sci-Fi/Drama - Chapters: 7 - Words: 32,567 - Reviews: 13 - Favs: 23 - Follows: 39 - Updated: 6/14 - Published: 2/28 - Garrus V., Shepard
Mass Cross Frontier by weebee reviews
The culmination of several terrible ideas. From an il-advised scientific expedition, to the Illusive man's shifting plans, to a couple of authors who should really know better. No, it's not what you think.
Crossover - Anime X-overs & Mass Effect - Rated: T - English - Humor/Adventure - Chapters: 4 - Words: 49,072 - Reviews: 17 - Favs: 50 - Follows: 68 - Updated: 6/14 - Published: 1/29/2021
Mass Effect demi humans by EclipsePheniox reviews
Long ago on earth demi-humans appeared on earth. Now expanding into the galaxy the other races have to deal with both humans and demi-humans. Mass effect story from beginning to end but with monster people to make it more interesting. Experimental, possible harem
Crossover - Mass Effect & Monster Girl Encyclopedia - Rated: M - English - Adventure/Sci-Fi - Chapters: 40 - Words: 139,637 - Reviews: 51 - Favs: 260 - Follows: 273 - Updated: 6/14 - Published: 8/2/2019
A Second Chance by Creeperbreak reviews
After the golden throne fails, the emperor decides to pull one last card. Using the immeasurable amount of power he accumulated, he moves an 20th century era Earth into the galaxy of mass effect.
Crossover - Warhammer & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 3 - Words: 5,415 - Reviews: 38 - Favs: 155 - Follows: 251 - Updated: 6/13 - Published: 1/10 - The Emperor
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