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

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: 24 - Words: 271,546 - Reviews: 101 - Favs: 324 - Follows: 438 - Updated: 2h - Published: 6/13/2020 - Necrons, 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: 6 - Words: 30,979 - Reviews: 38 - Favs: 226 - Follows: 268 - Updated: 11h - Published: 10/31 - Shepard, V
Human Legacy by ShirouKuroEmiya reviews
Some fifty thousand years, there once was a galaxy-spanning civilisation belonging to a race called humanity. They earned many names such as Protector and Giver. Many later races would worship them as gods. Humanity fought a war with the life-destroying Reapers. Now, thousands of years later the younger races have stepped into the stars to find the ruins of humanity...
Crossover - Fate/stay night & Mass Effect - Rated: T - English - Chapters: 1 - Words: 1,258 - Reviews: 4 - Favs: 26 - Follows: 32 - Published: 15h - Shepard
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: 10 - Words: 137,081 - Reviews: 99 - Favs: 297 - Follows: 370 - Updated: 19h - Published: 8/18/2020 - Amuro R., Char A., Tali'Zorah, Admiral Hackett
No Greater Calling by silencewillfall0091 reviews
Because here's the thing. Turians, despite their reputations, had never loved war- not the suffering, the dying, nor the pain. They loved victory- the prevailing of clear good over clear evil- justice winning in the end, the beating of overwhelming odds for peace. And there was never more a clear example of this type of war than ours against the Covenant.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 4 - Words: 6,957 - Reviews: 80 - Favs: 320 - Follows: 529 - Updated: 20h - Published: 1/7
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: 12 - Words: 5,831 - Reviews: 6 - Favs: 8 - Follows: 8 - Updated: 12/4 - Published: 9/14 - Aria T'Loak - Complete
To Sail Among the Stars by How-not-to-do-something reviews
The Universal Century promised a new Era, and brought conflict. But the stars shine on, awaiting those who seek a new start. Crossposted from Ao3.
Crossover - Gundam UC & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 7 - Words: 38,131 - Reviews: 12 - Favs: 35 - Follows: 49 - Updated: 12/4 - Published: 11/1
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: 38 - Words: 128,306 - Reviews: 46 - Favs: 243 - Follows: 245 - Updated: 12/4 - Published: 8/2/2019
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: 18 - Words: 80,565 - Reviews: 111 - Favs: 186 - Follows: 277 - Updated: 12/4 - Published: 8/7
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: 7 - Words: 34,351 - Reviews: 7 - Favs: 17 - Follows: 16 - Updated: 12/4 - Published: 6/30 - [Riku, Sora] [Liara T'Soni, Shepard]
Galactic Upheaval by palik reviews
Our closest planet was always a mistery to us. So close yet so enigmatic, for a reason. The Exploration of mars has brought many changes in Human sociaty, none more then the discovery of an Alien Beacon filled to the brim with technology and designs never thought possible. A scared Humanity ventures into the stars to carve out is own place in the galaxy. (Slight HFY, maybe not)
Crossover - Star Wars & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 14 - Words: 24,468 - Reviews: 150 - Favs: 463 - Follows: 600 - Updated: 12/3 - Published: 7/2/2021
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: 2 - Words: 8,557 - Reviews: 4 - Favs: 46 - Follows: 55 - Published: 12/3 - D. Anderson, Admiral Hackett, Rael'Zorah, OC
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: 42 - Words: 738,709 - Reviews: 620 - Favs: 527 - Follows: 561 - Updated: 12/3 - Published: 9/13/2020 - Axel, Roxas, Xion, Shepard
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: 11 - Words: 57,081 - Favs: 12 - Follows: 8 - Updated: 12/3 - Published: 8/17 - Thrawn, OC, Ezra B., Shepard
Anthem Effect by DragonKnight374 reviews
What if more than the world of Coda was isolated in space time? What will the freelancers do when they realize there’s more to the universe than their little planet, and how will the citadel react, to the Anthem of Creation?
Crossover - Mass Effect & Anthem - Rated: M - English - Sci-Fi/Adventure - Chapters: 14 - Words: 70,075 - Reviews: 57 - Favs: 201 - Follows: 248 - Updated: 12/1 - Published: 8/8
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
Crossover - Mass Effect & RWBY - Rated: T - English - Adventure - Chapters: 50 - Words: 211,923 - Reviews: 582 - Favs: 671 - Follows: 931 - Updated: 12/1 - Published: 5/5/2019 - Legion, Pyrrha N., God of Darkness
RWBY Effect 2: Rebirth by Owriush reviews
A year and a half has gone by, since the attack on the Citadel. Team RWBY and the crew of the Normandy suffer a tragedy. Ending in the loss of many lives. Awakened now a few years later. The girls of team RWBY, Elizabeth Shepard and their new allies must fight against a threat. One even more dangerous then the last. This is their Rebirth into a new world of wonders and insanity.
Crossover - Mass Effect & RWBY - Rated: T - English - Adventure/Romance - Chapters: 2 - Words: 47,256 - Reviews: 5 - Favs: 22 - Follows: 25 - Updated: 11/30 - Published: 8/10
Mass Age by Balidoria reviews
Of all the planets Commander Shepard could have crash landed on, ending up in the mysterious land of Thedas during a blight was definitely on the bottom of her list.
Crossover - Mass Effect & Dragon Age - Rated: M - English - Romance/Friendship - Chapters: 23 - Words: 50,092 - Reviews: 26 - Favs: 96 - Follows: 117 - Updated: 11/29 - Published: 3/12/2015 - Shepard, Alistair, Cousland
Don't Fuck With Aria by SympathyForTheQuarians
On an ordinary day on Omega in 2184, Aria T'Loak picks up the Death Note. She uses it to become queen of the fucking Terminus, because of course she does. AU.
Crossover - Death Note & Mass Effect - Rated: T - English - Chapters: 1 - Words: 1,752 - Favs: 2 - Follows: 1 - Published: 11/29 - Aria T'Loak - Complete
Mass Effect: Forward Unto Dawn by Wiggybaby67 reviews
Spartans never die. They're just missing in action. At least, that's how the saying goes. But for the Master Chief and Cortana, they're no longer missing. Awaking in a different universe, the two of them will uphold their oath: to protect Earth and all her colonies. Only it won't be from the Covenant this time. And just who is this Commander Shepard they'll be working with?
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 3 - Words: 3,522 - Reviews: 15 - Favs: 52 - Follows: 93 - Updated: 11/28 - Published: 11/26 - Master Chief/John-117, Shepard
Galactic Hero's Effect by fitoxi reviews
'Returner':This Quirk sent Izuku to another world, only to return him to Quirk world aferwards, retaining all the powers he had obtained.Unfortunately, no one will believe him if he tries to reveal the origin of his others Quirks,'Biotics/Omnitool' and much less will they believe the tale that he was the greatest hero of an entire galaxy[Izuku OOC/Initially,Vigilant/only2 Romances]
Crossover - Mass Effect & My Hero Academia/僕のヒーローアカデミア - Rated: T - English - Adventure/Romance - Chapters: 4 - Words: 40,604 - Reviews: 29 - Favs: 192 - Follows: 247 - Updated: 11/27 - Published: 3/3 - [Liara T'Soni, Himiko Toga, Izuku M.] U. Grunt
CyberEffect: Age of Legends by DragonKnight374 reviews
What if the Militech Colony on Mars discovered something, something that could introduce humanity to the Galactic stage? While they might thrive, may the gods help the species they’ll live with. (Working on Summary)
Crossover - Mass Effect & Cyberpunk 2077 - Rated: M - English - Adventure/Sci-Fi - Chapters: 1 - Words: 7,492 - Reviews: 7 - Favs: 48 - Follows: 58 - Published: 11/27
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: 8 - Words: 29,337 - Reviews: 67 - Favs: 291 - Follows: 437 - Updated: 11/27 - Published: 7/8 - Rookie, Shepard
Héroe De Una Galaxia Distante by fitoxi reviews
'Retornador'; El Quirk que envio a Izuku a otro mundo, para luego regresarlo de vuelta, conservando todos los poderes que había ganado. Lamentablemente, nadie le creera si intenta revelar el origen de sus otros Quirks, 'Bioticos/Omniherramienta' y menos se creeran el cuento de que fue el más grande héroe de una galaxia. [Izuku OOC/Inicialmente, Vigilante/Harem ( Solo 2 parejas)]
Crossover - Mass Effect & My Hero Academia/僕のヒーローアカデミア - Rated: T - Spanish - Adventure/Romance - Chapters: 5 - Words: 37,788 - Reviews: 2 - Favs: 11 - Follows: 13 - Updated: 11/26 - Published: 3/3 - [Liara T'Soni, Himiko Toga, Tali'Zorah, Izuku M.]
Adventures of Captain Jason and Agronauts by johny woodpecker
While Shepard does his thing, captain Jason and his friends travel the galaxy from alternate perspective. Crossover with lots of stuff, but mostly TF2
Crossover - X-overs & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 6 - Words: 5,081 - Updated: 11/26 - Published: 10/14
3.4K | Page 1 2 3 4 11 .. Last Next »