Mass Effect Crossovers
Filters
3.4K | Page 1 2 3 4 11 .. Last Next »

Dysfunctional Drift by Ricky Rabankenz reviews
After an ambush almost cost them everything, the mercenary group Dysfunction attempts a jump to safe harbor, but a catastrophic failure sees them flung into an unknown galaxy. What will they do with no money and no contacts.
Crossover - Mass Effect & Star Citizen - Rated: M - English - Sci-Fi - Chapters: 10 - Words: 21,084 - Reviews: 14 - Favs: 46 - Follows: 73 - Updated: 58m - Published: 10/19/2022
Ark effect Remake by EclipsePheniox reviews
After the attack on the Collector base failed, the Normandy SR-2 found themselves on Ark a planet roaming with primordial beasts. But as their Commander returns, things become more complex as they learn about Ark and the reason they are there and the purpose of the world.
Crossover - Mass Effect & ARK: Survival Evolved - Rated: T - English - Adventure/Sci-Fi - Chapters: 3 - Words: 16,223 - Reviews: 4 - Favs: 35 - Follows: 47 - Updated: 2h - Published: 1/3 - Liara T'Soni, Miranda L., Shepard
Homo Proximus: The next step of Man (Avatar-Mass Effect-multicross) by Tiranus reviews
After the second defeat of RDA and the destruction of the colonization effort of Pandora, the Humans of Earth progress on their own. This is the story of the rise of the human race in a strange galaxy.
Crossover - Mass Effect & Avatar - Rated: M - English - Chapters: 10 - Words: 18,722 - Reviews: 24 - Favs: 65 - Follows: 82 - Updated: 3h - Published: 2/6
Operation Terra Sunrise HALO ( AU) x ME ( AU) by SimplyLaggy reviews
The Endless Swarm, known as the Reapers. Mostly defeated by the forerunners, yet after the death of almost all forerunners, they return. Now, the Reclaimers face them. Join Rebecca Shepard, a OMI Long-term undercover operative, as she goes undercover as Jane Shepard on Terra, Systems Alliance Earth, which was made by Ancient Humanity, as a ancient human remnant AI watches.
Crossover - Halo & Mass Effect - Rated: T - English - Chapters: 2 - Words: 4,521 - Reviews: 3 - Favs: 24 - Follows: 39 - Updated: 12h - Published: 2/9 - Illusive Man, Shepard
The Rook by Twisted Fate MK 2 reviews
On the way down to New Mombasa, Rookie falls into the Slipspace Rupture and ends up crashing down on Menae, high above Palaven, right in the midst of the Reaper War. From there, the war itself will shift and the fighting persists, but who knows what an ODST will add to the mix. (Redo of an older story)
Crossover - Halo & Mass Effect - Rated: M - English - Adventure - Chapters: 10 - Words: 36,153 - Reviews: 79 - Favs: 317 - Follows: 486 - Updated: 20h - Published: 7/8/2022 - Rookie, Shepard
The Rise of the Enclave by 6-4 pilot reviews
Stuck in a more peaceful galaxy, the Tau of the Farsight Enclave must still prepare themselves for war against the forces that conspire to destroy it. But as they fight for their existence, elements from their old home come to strengthen their power in said old home.
Crossover - Warhammer & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 19 - Words: 99,490 - Reviews: 135 - Favs: 317 - Follows: 357 - Updated: 21h - Published: 4/20/2020 - Chaos Space Marines, Tau, Legion, Shepard
The Wayfarer by Umbral Choir reviews
In the twilight of the universe, the Ihan-rii, a forgotten sect of Protoss travel to another reality to escape the hounds of the void. Xiltar the last member of the umbral choir will guide his people into this world, only to find that he traded one war of annihilation for another.
Crossover - StarCraft & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 9 - Words: 16,832 - Reviews: 9 - Favs: 25 - Follows: 36 - Updated: 21h - Published: 2/5
Space Effect by Foyden reviews
In an attempt to escape from the blood moons, Isaac and Carver launch a ship on a superluminal journey. At this time, Normandy explores one of the systems and discovers an unknown spacecraft.
Crossover - Mass Effect & Dead Space - Rated: M - English - Sci-Fi/Adventure - Chapters: 4 - Words: 12,299 - Reviews: 2 - Favs: 10 - Follows: 14 - Published: 23h - Shepard, Isaac C., J. Carver
Blue Animagus by Baron Zed
Omake for Tellur's Blue Magic. Harry has some directed accidental magic. Hermione researches how to get what she wants.
Crossover - Harry Potter & Mass Effect - Rated: T - English - Sci-Fi/Fantasy - Chapters: 1 - Words: 5,611 - Favs: 20 - Follows: 28 - Published: 2/15 - [Harry P., Hermione G.] Liara T'Soni
The True Way Of The Sith - Part Two by Writing Shop 12 reviews
Sequel to The True Way Of The Sith. The Mass Effect Relay has been activated and a whole new galaxy of opportunity comes with it. What will Lily Potter, the Crown Princess of the Sith Empire, do with this new chance for adventure? And more importantly, will her father let her go into the unknown on her own? Citadel space beware, the Sith have come. (Harry x Harem) (Lily x Shepard)
Crossover - Harry Potter & Mass Effect - Rated: M - English - Adventure/Romance - Chapters: 3 - Words: 18,255 - Reviews: 213 - Favs: 1,588 - Follows: 2,063 - Updated: 2/15 - Published: 1/8 - Harry P., Liara T'Soni, Tali'Zorah, 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: 4 - Words: 44,672 - Reviews: 28 - Favs: 190 - Follows: 258 - Updated: 2/15 - Published: 11/20/2021
star wars the old republic naruto story by dragons 23 reviews
naruto was left on the steps of the jedi temple and is found by grand master and is the adopted by jedi knight satele shan and become a jedi padawan to master kassandra romance be lana beniko and jaesa and all so my oc kara lockwood
Crossover - Mass Effect & Star Wars - Rated: M - English - Sci-Fi/Romance - Chapters: 6 - Words: 6,248 - Reviews: 2 - Favs: 4 - Follows: 5 - Updated: 2/15 - Published: 10/16/2022 - HK-47, Nadia G., Lana Beniko, BD-1
The Sins of our Fathers by MarkerMagnum reviews
Unknown to the Citadel Council, the Human-Covenant war nears its vicious end. Miranda Keyes is seconds too slow. Delta Halo fires, leaving UNSC space as a lifeless snapshot in time. The Citadel must morn the loss of a civilization they never knew. Crossposted by myself, Jabber the very wocky on Ao3.
Crossover - Halo & Mass Effect - Rated: T - English - Drama/Sci-Fi - Chapters: 2 - Words: 13,882 - Reviews: 50 - Favs: 141 - Follows: 201 - Updated: 2/15 - Published: 2/11 - Master Chief/John-117, Miranda K., Cortana
Sith Effect Episode I: First Contact by Metagray reviews
The ruins of Mars belonged not to the protheans but to humanity's ancestors, the Sith Empire. How will the Citadel react to a race that not only doesn't use mass effect technology, but is an anathema to their ideals. When the turians find the Sith, they face a war unlike any this galaxy has seen. The First Contact War has begun. Peace is a lie, there is only passion.
Crossover - Star Wars & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 10 - Words: 71,567 - Reviews: 262 - Favs: 720 - Follows: 976 - Updated: 2/14 - Published: 12/3/2022 - D. Anderson, Admiral Hackett, Rael'Zorah, OC
The Terran Effect 1: Earth's new colonists by TimeTraveller-1900 reviews
The Twelve Colonies of Kobol have newly settled on Earth, deciding to discard their technology with plans to colonise the planet.
Crossover - Battlestar Galactica: 2003 & Mass Effect - Rated: K - English - Sci-Fi - Chapters: 1 - Words: 1,223 - Reviews: 3 - Favs: 15 - Follows: 15 - Published: 2/14 - W. Adama, K. Thrace/Starbuck - Complete
I'll Always Find You by Scififan33 reviews
Sora T'Soni just wanted to keep her family safe, to put her skills to use for her people, so she joined the military. Riku Yamada was running from a past he wished he could forget, grateful to those who saved him, so he joined the Alliance military. The Saren and Sovereign attacked and both their lives changed forever. Something drew them together but how could it work?
Crossover - Kingdom Hearts & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 16 - Words: 70,255 - Reviews: 8 - Favs: 22 - Follows: 21 - Updated: 2/14 - Published: 6/30/2022 - [Riku, Sora] [Liara T'Soni, Shepard]
Azure Resilience by MarredTales reviews
New planets were always to be considered dangerous and for this asari huntress it was no different. Surviving the reaper war without knowledge of the outcome, she must use her abilities to her advantage to ensure her survival and find herself a place amongst the world. It was just bad luck that she arrived during a blight.
Crossover - Mass Effect & Dragon Age - Rated: M - English - Fantasy/Adventure - Chapters: 3 - Words: 9,908 - Reviews: 4 - Favs: 6 - Follows: 17 - Updated: 2/13 - Published: 1/30 - OC, Cailan T.
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 & Spork
Crossover - Mass Effect & RWBY - Rated: M - English - Adventure - Chapters: 61 - Words: 254,342 - Reviews: 677 - Favs: 713 - Follows: 990 - Updated: 2/12 - Published: 5/5/2019 - Legion, Pyrrha N., Penny P., God of Darkness
Saga of the Bridgers-Year 6 by Ganel750
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: 17 - Words: 88,673 - Favs: 16 - Follows: 11 - Updated: 2/12 - Published: 8/17/2022 - Thrawn, OC, Ezra B., Shepard
Mass Effect: Uzumaki Guardian by defiasstone2 reviews
The cycle has happened many times before even the Protheans, one of those cycles spelling the end of the elemental nations and the usage of chakra, which was deemed too great a threat to the cycle for the Reapers to let survive. However, even the best attempts at genocide can fail and now on Eden Prime a man with a grudge awakens from a very long nap...
Crossover - Naruto & Mass Effect - Rated: T - English - Adventure/Fantasy - Chapters: 25 - Words: 137,667 - Reviews: 796 - Favs: 2,017 - Follows: 2,518 - Updated: 2/12 - Published: 5/15/2015 - Naruto U., J. Garson, Tali'Zorah
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: 28 - Words: 124,965 - Reviews: 152 - Favs: 242 - Follows: 347 - Updated: 2/12 - Published: 8/7/2022
Technophiles and Militarists by thelordofdarkreunion reviews
The Reaper invasion is nigh. Outnumbered and outgunned, the Citadel must turn to two new, dangerous allies for salvation: the Adeptus Mechanicus and Imperium of Man.
Crossover - Warhammer & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 25 - Words: 297,085 - Reviews: 578 - Favs: 453 - Follows: 572 - Updated: 2/11 - Published: 4/22/2022 - Imperial Guard, Space Marines, Adeptus Mechanicus, Shepard
Lords Of War by jahobes reviews
The Citadel is but a shadow of its former glory. The Terminus systems led by the Batarians and Salarians stand as the new masters of the Galaxy. Or so they thought? Heavily AU. Humanity based off of the Expanse T.V series. HFY.
Crossover - Mass Effect & Expanse - Rated: T - English - Sci-Fi/Drama - Chapters: 16 - Words: 20,091 - Reviews: 60 - Favs: 289 - Follows: 423 - Updated: 2/11 - Published: 6/9/2016 - Garrus V., Liara T'Soni
Drop into Hell by Lighting wolf knight
They have a lot more to do before its done. Rated T for violence, death, and profanity.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Romance - Chapters: 2 - Words: 5,426 - Favs: 11 - Follows: 14 - Updated: 2/10 - Published: 2/3 - Miranda K., OC, Admiral Hackett, Shepard
Mass Effect meets X Universe by Sordahon reviews
Crossover between Mass Effect trilogy and X Universe 4x space game. My game Corporation and rest of Commonwealth with Terrans will meet Citadel Races and maybe even Reapers. There will be no System Alliance nor Cerberus.
Crossover - X Universe & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 13 - Words: 35,244 - Reviews: 31 - Favs: 54 - Follows: 76 - Updated: 2/10 - Published: 3/20/2020
3.4K | Page 1 2 3 4 11 .. Last Next »