Mass Effect Crossovers
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Quintessence Effect Collective Rebirth by EvaShinobiKaiserKnight reviews
Two Years have passed since the Paladins and the Normandy had suffered the tragedy of loss. A year since the Altean's have begun to return to the galaxy after the second battle of the Citadel. But the Reapers are not done as the Paladins and a revived John Shepard must gather allies to face this threat. This is their Rebirth into a new world of wonders as Heroes. NOW FORM VOLTRON!
Crossover - Mass Effect & Voltron: Legendary Defender - Rated: M - English - Sci-Fi/Family - Chapters: 13 - Words: 159,632 - Reviews: 54 - Favs: 39 - Follows: 42 - Updated: 1/21 - Published: 8/11/2024 - [OC, Princess Allura] [Ashley W., Shepard]
Stellar Spirit's Effect by vmoneywashere reviews
Two collections of civilizations on separate sides of the galaxy. Both having fought wars and calamities alike. Going through their own advancements, trials, and wars. Soon they will be brought together, to fight on the same side. (ME/Kancolle/Stellaris Fanfic)
Crossover - Mass Effect & Kantai Collection - Rated: T - English - Sci-Fi/Adventure - Chapters: 2 - Words: 3,833 - Reviews: 3 - Favs: 12 - Follows: 17 - Published: 1/20 - Garrus V., Shepard, Primarch Adrien Victus, OC
Mythos Effect by Omniscent1 reviews
A crossover between Mass Effect and Cthulhutech. Humanity has won the Aeon War and has since expanded and thrived. How will the galaxy fare with this new power?
Crossover - Cthulhu Mythos & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 31 - Words: 270,866 - Reviews: 2149 - Favs: 5,508 - Follows: 6,331 - Updated: 1/20 - Published: 6/5/2013 - Saren A., Shepard, OC
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: 50 - Words: 165,883 - Reviews: 70 - Favs: 318 - Follows: 337 - Updated: 1/20 - Published: 8/2/2019
Estrella y Masa se Conocen by dark platinum reviews
Anthon fankhauser y John Shepard son dos individuos reconocidos por sus respectivos gobiernos como héroes de renombre, la única diferencia es la escala en la que operan, uno a salvado a un sector entero mientras que el otro a salvado a una galaxia entera, que ocurrirá cuando el primero se encuentre con el segundo.
Crossover - Mass Effect & Starfield - Rated: M - Spanish - Adventure/Sci-Fi - Chapters: 3 - Words: 32,780 - Reviews: 3 - Favs: 4 - Follows: 6 - Updated: 1/20 - Published: 5/24/2024 - Miranda L., Shepard, Sarah Morgan, OC
Into the Howling Dark by long night of solace reviews
Hundreds of millions of years ago, Humanity, Forerunners and the SanShyuum, the tier-1 species protected the galaxy. But the peace never lasted as the threat of flood and the reapers brought the Milkyway to the edge of extinction. Now the warriors of the past needs to guide the future galaxy and stop history from repeating itself.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 7 - Words: 57,716 - Reviews: 64 - Favs: 182 - Follows: 244 - Updated: 1/19 - Published: 10/23/2024 - Master Chief/John-117, Didact, D. Anderson, Shepard
Justice Of A Spectre by Mace sheperd reviews
A foul mouthed schoolbus driver dies and is reincarnated into a universe that is a fusion of Pokemon And Mass Effect. After firing the crucible he alongside his Pokemon find themselves in the Young Justice universe. There's going to be some changes around here.
Crossover - Mass Effect & Young Justice - Rated: M - English - Sci-Fi/Adventure - Chapters: 1 - Words: 7,671 - Reviews: 4 - Favs: 12 - Follows: 17 - Published: 1/19 - Jack
Mass Effect Crossover by jetslinger333 reviews
This fiction has different type of mass effect crossover ideas and other types as well, read and review if you like the series I wrote it. Next Update Persona 3 reload x cyberpunk Edgerunner.
Crossover - Mass Effect & Kamen Rider - Rated: T - English - Sci-Fi/Adventure - Chapters: 32 - Words: 94,489 - Reviews: 58 - Favs: 48 - Follows: 53 - Updated: 1/18 - Published: 5/18/2014
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: 5 - Words: 105,636 - Reviews: 11 - Favs: 38 - Follows: 45 - Updated: 1/16 - Published: 8/10/2022
Warcraft Effect Neko ver by UltraZeta120 reviews
A young soul was given a second chance by the Grim Reaper, to give them aid with the current problems with the world of Mass effect. Granted the power of Gamer and a new form, along with an army, she will be the fiery blade that protects the weak and cull the wicked of this galaxy. RTS Gamer, Nekomata Youkai protagonist with Warcraft 3 powers/army (thicc busty OCs).
Crossover - Warcraft & Mass Effect - Rated: M - English - Fantasy/Adventure - Chapters: 3 - Words: 14,976 - Reviews: 3 - Favs: 31 - Follows: 37 - Published: 1/15 - OC
Mass Wars Episode II by Fantasymaker76 reviews
Five Years have past since the destruction of the Normandy and the death of Commander Shepard. Now a new order is rising in the unmapped regions of the galaxy which is leaving unease in both the Republic and the Citadel. Determined to find out what is going on, a pro-human organisation has made plans to find out what this mysterious group wants.
Crossover - Mass Effect & Star Wars - Rated: M - English - Sci-Fi/Adventure - Chapters: 10 - Words: 49,478 - Reviews: 25 - Favs: 50 - Follows: 54 - Updated: 1/14 - Published: 3/13/2023
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: 16 - Words: 45,798 - Reviews: 18 - Favs: 85 - Follows: 101 - Updated: 1/13 - Published: 1/3/2023 - Liara T'Soni, Miranda L., Shepard
Maelstrom Effect Book 2: Shadows of Crimson by godospartan the Kitsune reviews
After Soverign's defeat, the sibling Commanders left to clean up the mess it left behind. But one of them was struck down by an unknown force. The next 2 years they go in search of the ones responsible, unknowing that a secret group is bringing their sibling back to life to fight the Reapers again. How will they react when they meet again? NaruxTali, Shakarian, Mature content later
Crossover - Naruto & Mass Effect - Rated: M - English - Sci-Fi/Hurt/Comfort - Chapters: 16 - Words: 183,558 - Reviews: 85 - Favs: 369 - Follows: 421 - Updated: 1/13 - Published: 12/25/2019 - Naruto U., J. Garson, Garrus V., Tali'Zorah
Mass Effect: Legend of Vader by Gaming Lichdom reviews
Darth Vader attempts to resurrect his deceased wife through an ancient ritual, but is pulled into the machine and transported to an unknown planet. On his quest to return home, he comes across a Quarian woman named Tali'Zorah, who just so happens to have information about a rogue Spectre Named Saren. The two form a strange duo as they venture on a quest to save the galaxy.
Crossover - Star Wars & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 3 - Words: 13,395 - Reviews: 31 - Favs: 136 - Follows: 216 - Updated: 1/11 - Published: 10/30/2024 - [Darth Vader, Tali'Zorah] Garrus V., Shepard
As The Wind Abates by DingusMacGoo reviews
After witnessing the death of his oldest friend, an immortal Harry Potter turns to the stars in an attempt to find meaning in his life.
Crossover - Harry Potter & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 40 - Words: 94,593 - Reviews: 332 - Favs: 1,059 - Follows: 1,481 - Updated: 1/10 - Published: 2/6/2024 - Harry P., J. Garson, Shepard
Exodus Into Fire by keita52 reviews
When the Battlestar Galactica, guided by Starbuck, makes the jump towards Earth, they find a planet encircled by giant black ships and a woman calling herself Commander Shepard telling them to leave before the Reapers attack them. With Earth not the safe haven they'd hoped for, the Colonial Fleet and their Cylon allies struggle to make a place for themselves in this new universe.
Crossover - Battlestar Galactica: 2003 & Mass Effect - Rated: M - English - Sci-Fi/Drama - Chapters: 19 - Words: 76,064 - Reviews: 125 - Favs: 334 - Follows: 477 - Updated: 1/10 - Published: 11/12/2014 - L. Adama/Apollo, K. Thrace/Starbuck, Ashley W., Shepard
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: 5 - Favs: 14 - Follows: 12 - 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: 173 - 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: 67 - Favs: 138 - Follows: 194 - 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: 169 - Favs: 420 - Follows: 567 - 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: 10 - Follows: 13 - 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: 34 - 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: 755 - Favs: 758 - Follows: 792 - 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: 159 - Favs: 179 - Follows: 258 - 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: 624 - Favs: 801 - Follows: 950 - Updated: 1/3 - Published: 12/28/2020 - OC, U. Wrex, Shepard, Councilor Tevos
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