Mass Effect Crossovers
Filters
3.5K | Page 1 2 3 4 11 .. Last Next »

The Traveler's Second Chance by Rossweisse
The Traveler has a different response to the Darkness. A story where the Guardians never accept the Darkness, where they always fight against it. The Traveler gave them a second chance, what do they do with it? Destiny shows up in Mass Effect. OC's for Destiny MC and Ghosts, different take on Destiny Lore
Crossover - Mass Effect & Destiny - Rated: M - English - Adventure/Romance - Chapters: 1 - Words: 7,718 - Favs: 2 - Follows: 5 - Published: 4h
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.
Crossover - Naruto & Mass Effect - Rated: T - English - Fantasy/Sci-Fi - Chapters: 12 - Words: 35,068 - Reviews: 101 - Favs: 230 - Follows: 313 - Updated: 6h - Published: 1/14
Stellar Effect Codex by Brandon Storm reviews
A Codex exploring the History and Lore of the Stellar Effect Universe
Crossover - Mass Effect & Stellaris - Rated: T - English - Sci-Fi - Chapters: 16 - Words: 34,645 - Reviews: 25 - Favs: 39 - Follows: 38 - Updated: 8h - Published: 8/7/2022
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: 53 - Words: 234,521 - Reviews: 216 - Favs: 334 - Follows: 456 - Updated: 9h - Published: 8/7/2022
Wasteland Galaxy by Redentor reviews
Matriarch Lantaya is a brave explorer from the Golden Age of Asari space exploration, and she wants to go home. The Lone Wanderer is a messianic cyborg from a world scorched in nuclear fire, and he wants to save the wastelands. Courier Six is a tribal postman who usurped control of an entire city state. He wants to eat people. Among other things. (Also available on Spacebattles)
Crossover - Fallout & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 45 - Words: 332,243 - Reviews: 51 - Favs: 232 - Follows: 290 - Updated: 13h - Published: 1/5/2022 - Lone Wanderer, Courier, OC
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: 26 - Words: 236,358 - Reviews: 18 - Favs: 54 - Follows: 72 - Updated: 8/4 - Published: 6/1/2020 - OC, P. Coulson, Harbinger, Shepard
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: 49 - Words: 217,712 - Reviews: 48 - Favs: 120 - Follows: 142 - Updated: 8/4 - Published: 2/5
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: 21 - Words: 105,260 - Reviews: 128 - Favs: 344 - Follows: 429 - Updated: 8/4 - Published: 8/18/2020 - Amuro R., Char A., Tali'Zorah, Admiral Hackett
Spectre with a Spartan Sister by ZeBear reviews
In 2574, after the formation of the United Sentient Species Federation, they find more intelegent life. Having infiltrated the Normandy Project, they save John Shepard from dying after the Collectors attack at the end of Mass Effect 1. Neglecting to tell his friends. Now with and entire Federation of Species behind him, instead of Cerberus, how will John deal with it all?
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 4 - Words: 5,158 - Reviews: 9 - Favs: 28 - Follows: 42 - Updated: 8/4 - Published: 7/28 - [Shepard, Tali'Zorah] Garrus V.
When magic decides one war isn't enough by Alykto reviews
Following Voldemort's return after the Triwizard Tournament, Dumbledore realized he couldn't possibly handle the incoming conflict on his own. He needed a general to prepare the war. His summoning ritual then dragged Commandant Shepard, Specter and N7 Alliance Marine fighting the Reapers to 12 Square Grimmault.
Crossover - Harry Potter & Mass Effect - Rated: T - English - Adventure/Hurt/Comfort - Chapters: 6 - Words: 10,620 - Reviews: 11 - Favs: 15 - Follows: 25 - Updated: 8/3 - Published: 6/29 - Harry P., Ron W., Hermione G., Shepard
Beyond: A Mass Effect and Halo Story by yaknsneeze reviews
AU. 7 months after the events on the Citadel, Commander Shepard and an old ally return to fight an old enemy. Their new mission however, just got a lot more complicated. Post Mass Effect 3, and set in the Halo universe during the book Shadows of Reach.
Crossover - Halo & Mass Effect - Rated: M - English - Chapters: 4 - Words: 11,739 - Reviews: 4 - Favs: 16 - Follows: 27 - Updated: 8/3 - Published: 6/27 - Master Chief/John-117, Shepard
No place like home by Sicht
They promised, 'The Future is with us' and, I wondered who 'us' really was. The average Ivan and Natasha were nowhere in sight for whatever plans the leaders of the Union had in mind. Still, I don't think it was all smoke and mirrors. Might need to see for myself, just to make sure.
Crossover - Mass Effect & Cyberpunk 2077 - Rated: M - English - Sci-Fi - Chapters: 1 - Words: 5,322 - Published: 8/2
Bellum Terranum by F35B reviews
In the year 2585 the Humans have mostly recovered from the effects of the Human-Covenant War, however unknown to them, there is a much larger Galaxy out there... one that doesn't take kindly to humanity and their... antics... PM me suggestions, I'm open to constructive criticism, Pls Read & Review (Slight HFY)(AU)
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 2 - Words: 9,181 - Reviews: 27 - Favs: 103 - Follows: 131 - Updated: 8/2 - Published: 7/31
Shadows and Dust by HistoricalHijinks reviews
Shattered, Reborn, Reforged, Remade. The gaze of the Pheonix Force, seeking purpose and understanding, falls upon the Reapers and their harvests. Disgusted by their perverted, farcical 'cycle', it decides to wipe their stain from the multiverse. Needing a perfect host, it waits tens of millennia until, as Hannah Shepard is miscarrying due to eezo radiation, it finds one in her womb
Crossover - X-Men & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 2 - Words: 12,440 - Reviews: 19 - Favs: 126 - Follows: 164 - Updated: 8/2 - Published: 6/25 - Ashley W., Liara T'Soni, Shepard
Stacked Deck by A Tin Can reviews
The peoples of Earth have reclaimed their legacy from the ashes of the old world. With mutants and aliens in tow as it's citizens alongside the rest of humanity, they're bound to make waves. The rest of the galaxy is about to see what happens when the right people know how to stack a deck in their favor.
Crossover - Fallout & Mass Effect - Rated: M - English - Adventure - Chapters: 1 - Words: 4,660 - Reviews: 2 - Favs: 28 - Follows: 49 - Published: 8/1 - Lone Wanderer, Courier, OC, Sole Survivor
Effects of Man by Krotosin reviews
During the shitshow that Eden Prime was, Shepard finds a man buried near the beacon. With him, two AIs, one from Reach, the other from Typhon. With him at her side, Jane's mission is easier. If it wasn't for the fact he's a hyper-lethal killing machine. And a shy one at that. Mostly Titanfall and Halo, with some (a lot) Deep Rock Galactic. First try at writing, so keep that in mind
Crossover - Mass Effect & Titanfall - Rated: M - English - Sci-Fi - Chapters: 3 - Words: 25,986 - Reviews: 10 - Favs: 42 - Follows: 59 - Updated: 8/1 - Published: 6/10
Were it So Easy by Sigma0327 reviews
Six's life was a giant war. Every battle was a test of sheer tenacity and stubbornness against insurmountable odds. Every moment, every bullet fired, every Covenant, Insurrectionist, and Flood spore killed has led up to his last fight. Once again he was one of the few that stood between Earth and her enemies. This would be his final battle, and nothing could change that, right?
Crossover - Halo & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 10 - Words: 143,827 - Reviews: 199 - Favs: 886 - Follows: 1,281 - Updated: 7/31 - Published: 11/9/2020 - SPARTAN-B312/Noble Six, Tali'Zorah, Miranda L., Shepard
Remnants by General Rage reviews
From Halo's ashes, a mismatched Alliance is born. UNSC soldiers now serve alongside both Batarian deserters and shifty Jackal Space Pirates. Now Shepard and Master Chief have to keep these strange bedfellows from killing one another before they can stop an emergent new threat to the galaxy. The Next Swashbuckling Chapter of the Wormhole Chronicles.
Crossover - Halo & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 38 - Words: 811,801 - Reviews: 800 - Favs: 465 - Follows: 528 - Updated: 7/31 - Published: 4/22/2016 - Master Chief/John-117, Cortana, Tali'Zorah, Shepard
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: 32 - Words: 156,061 - Reviews: 252 - Favs: 823 - Follows: 929 - Updated: 7/31 - Published: 10/31/2022 - Shepard, V
Hunter x Hunter x Mass Effect challenge by kameriderking
A Chimera Ant’s AU Challenge
Crossover - Hunter X Hunter & Mass Effect - Rated: T - English - Sci-Fi/Supernatural - Chapters: 1 - Words: 64 - Favs: 1 - Follows: 1 - Published: 7/30
The Unknown Defender by Gabenator5 reviews
A new faction stirs, its green-clad enforcers seemingly unstoppable. Rumors spread, pirate bases go dark, and both the enslaved and kidnapped are discovered free. Who are these new interlopers, and what is their goal? For good or ill, the powers that be intend to find out. REWORK COMPLETED.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 19 - Words: 153,359 - Reviews: 1443 - Favs: 3,931 - Follows: 4,939 - Updated: 7/30 - Published: 9/27/2016 - Master Chief/John-117, Cortana, Tali'Zorah, Leviathan
Folded Effects by Mr. Thicc Montagne reviews
This is a very WIP, and very AU story. Space Engineers lacks lore, but instead I'll be utilizing lore from my own Space Engineers group. Gaia Cracking Industries will be the sole SE faction represented. And there will be 1 ship brought over. The Yggdrasil. A carrier ship. The SE ships will not simply overpower the ME ones. Summary to be updated once there's a proper story here.
Crossover - Mass Effect & Space Engineers - Rated: M - English - Sci-Fi/Adventure - Chapters: 2 - Words: 3,777 - Reviews: 14 - Favs: 28 - Follows: 35 - Updated: 7/29 - Published: 7/25 - Shepard, OC
Saga of the Bridger-Year 7 by Ganel750 reviews
The war between the Empire and the Coalition is about to enter its bloodiest phase as 2227 will go down as the 'year of battles'. Meanwhile the Jedi Order keeps fighting a parallel war against the Sith and the Imperial Federation is entangled with an emerging power in the Milky Way.
Crossover - Star Wars & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 1 - Words: 6,906 - Reviews: 2 - Favs: 8 - Follows: 7 - Published: 7/28 - Admiral Ackbar, OC, Ezra B., Shepard
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: 10 - Words: 49,291 - Reviews: 15 - Favs: 73 - Follows: 129 - Updated: 7/27 - Published: 9/8/2022 - V, OC
The Long, Long Walk by This Is Sarcasm reviews
Having stopped the Hive incursion on Eden Prime at the expense of being stuck in Commander Shepard's reality, Crow is offered a place on the Normandy. With nowhere to go, he accepts, and finds himself at the front of the fight against the Collectors, while at the same time trying to learn how to trust the ship's residents. In the end, though... maybe he's not 'stuck' after all.
Crossover - Mass Effect & Destiny - Rated: T - English - Sci-Fi/Angst - Chapters: 30 - Words: 102,768 - Reviews: 214 - Favs: 367 - Follows: 515 - Updated: 7/26 - Published: 9/15/2021 - Joker, Shepard, Dr. Chakwas, Crow
3.5K | Page 1 2 3 4 11 .. Last Next »