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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: 6 - Words: 48,994 - Reviews: 46 - Favs: 136 - Follows: 181 - Updated: 18h - Published: 10/23 - Master Chief/John-117, Didact, D. Anderson, Shepard
The Reclaimer Wars:The Reaper Crisis by Johnnieboy11 reviews
Six months prior to the worst crisis the normal Milky Way would face, Commander Shepard hunts the Collectors abducting human colonists in the Terminus Systems when she comes upon a terrifying new sight:Three Intergalactic fleets arrayed against each-other and her sole Frigate. Three new factions, one seeking a home and two seeking answers, all linked by the Star Roads.
Crossover - Game X-overs & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 34 - Words: 186,847 - Reviews: 222 - Favs: 273 - Follows: 332 - Updated: 12/26 - Published: 4/26 - Liara T'Soni, Tali'Zorah, Miranda L., Shepard
One Small Step by Bardothren reviews
Izuku opens a door inside a Turian ship and it all goes downhill from there.
Crossover - Mass Effect & My Hero Academia/僕のヒーローアカデミア - Rated: K - English - Sci-Fi/Drama - Chapters: 6 - Words: 14,025 - Reviews: 36 - Favs: 93 - Follows: 116 - Updated: 12/25 - Published: 6/11 - Izuku M., Nezu/The Principal
The Effect of a Horse and a Dragon by Vimesenthusiast reviews
A different decision right after being cursed leads to a very different Ranma showing up in Nerima. When he goes after Herb to beat some sense into him Ryoga takes the chance to get rid of his rival once and for all, sending both combatants to the Mass Effect universe. What changes will two martial artists and their use of ki have on the coming conflict? RanmaXTaliXKasumiXSama
Crossover - Ranma & Mass Effect - Rated: M - English - Humor/Adventure - Chapters: 12 - Words: 253,006 - Reviews: 681 - Favs: 2,395 - Follows: 2,488 - Updated: 12/24 - Published: 2/2/2014 - Ranma, Kasumi G., Tali'Zorah, Samara
Quintessence Effect: Lost Paragon and Found Renegades by EvaShinobiKaiserKnight reviews
Alone that was where Lotors Generals now stood in this cycle. Betrayed by one they could trust, alone with none of their people to interact with, survivors of a genocide. For their crimes against the Citadel these four were imprisoned on Fohl Prime, Renegades some would call them. But can these Renegades save a colony and become Paragons? Let us find out for ourselves shall we.
Crossover - Mass Effect & Voltron: Legendary Defender - Rated: M - English - Chapters: 2 - Words: 10,630 - Reviews: 5 - Favs: 9 - Follows: 9 - Updated: 12/24 - Published: 12/6 - James V., Acxa, Ezor, Narti
Mass Effect: Become Legend by Redgrave21 reviews
More than five years after the Reaper War, Jane Shepard had lost her life for her galaxy, while Garrus Vakarian struggles to move on from the loss of the love of his life. But when Garrus begins to suffer strange dreams, the Normandy crew are thrust into a conflict that has lasted since the beginning of time. All the while a strange voice begins to tempt Garrus with… Salvation.
Crossover - Destiny & Mass Effect - Rated: M - English - Adventure/Romance - Chapters: 22 - Words: 136,992 - Reviews: 75 - Favs: 50 - Follows: 76 - Updated: 12/24 - Published: 7/7 - Garrus V., Shepard, Osiris, Cayde-6
Mobile Suit - Mass Effect: The First Contact War by Mister Smallville reviews
Two worlds collide, neither prepared for the other. The Solar Sphere Congress -successor to the long gone Earth Federation- unwittingly starts a galactic crisis when it makes first contact with a very angry, very trigger happy Turian Hierarchy.
Crossover - Gundam UC & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 26 - Words: 162,136 - Reviews: 297 - Favs: 469 - Follows: 643 - Updated: 12/24 - Published: 8/7/2023
Earth's Defense by shdowstep reviews
It was too late. Despite the warnings given, the Reapers made their way to Earth, and the Harvest began once more. But the Reaper's miscalculated. Humanity was not alone on Earth - Gaia and Alaya existed as well. And they already had various plans in place to survive an extinction level event.
Crossover - Fate/stay night & Mass Effect - Rated: T - English - Chapters: 4 - Words: 12,850 - Reviews: 113 - Favs: 455 - Follows: 608 - Updated: 12/23 - Published: 2/5/2022
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: 12 - Words: 94,743 - Reviews: 151 - Favs: 685 - Follows: 965 - Updated: 12/23 - Published: 1/17/2023 - Adeptus Mechanicus, Tali'Zorah, 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: 35 - Words: 125,244 - Reviews: 210 - Favs: 676 - Follows: 968 - Updated: 12/22 - Published: 7/8/2022 - Rookie, Shepard
The Last Shinobi by derTraeumer reviews
Fifty thousand years ago, the shinobi world fell to the Reapers, their potential too great a threat. Akane Uchiha, the last surviving kunoichi, awakens in the modern galaxy on Eden Prime. Joining Commander Shepard's fight, she blends ancient ninja skills with advanced tech to preserve this cycle from annihilation and ensure no world shares her home's tragic fate.
Crossover - Naruto & Mass Effect - Rated: M - English - Tragedy/Mystery - Chapters: 41 - Words: 213,683 - Reviews: 55 - Favs: 200 - Follows: 246 - Updated: 12/21 - Published: 7/4/2019 - OC, Admiral Hackett, Shepard
Tali'Zorah: Demonologist by Sheev314 reviews
I DO NOT OWN MASS EFFECT ALSO THE FIRST TWO CHAPTERS WILL HAVE HORROR ELEMENTS IN IT Tali'Zorah's pilgrimage on a haunted world turns into an adventure with the demon known as Shepard. Can she and her new infernal friend save the galaxy from the Reapers, or will the universe burn in the fires of a new war.
Crossover - Mass Effect & Pathfinder RPG - Rated: M - English - Sci-Fi/Horror - Chapters: 2 - Words: 8,478 - Reviews: 7 - Favs: 10 - Follows: 14 - Updated: 12/21 - Published: 11/19 - Tali'Zorah, Shepard
Agent Murphy S Law by Darkstar the Grimm reviews
That time I became an agent of the IMF tasked with completing missions across all of time and space. Killing monsters, fighting villains and saving people by derailing canon events. SIOC x Miranda Lawson x multicross girls.
Crossover - Fate/stay night & Mass Effect - Rated: M - English - Romance/Humor - Chapters: 4 - Words: 8,386 - Reviews: 2 - Favs: 11 - Follows: 14 - Updated: 12/21 - Published: 12/6 - [OC, Miranda L.]
On the Nature of Daylight by Ragingceliac reviews
Tali never expected to be swept up into saving the galaxy; she never expected to meet someone like Commander Shepard, Hero of the Citadel; she never expected to be working for Cerberus. But the thing that would end up surprising her the most? The weirdo on the Normandy who carried around radioactive slag in his pocket.
Crossover - Fallout & Mass Effect - Rated: M - English - Angst/Romance - Chapters: 18 - Words: 44,300 - Reviews: 47 - Favs: 118 - Follows: 191 - Updated: 12/19 - Published: 8/27 - [Lone Wanderer, Tali'Zorah]
Transform Effect: Rise a Prime by RECKLESS SOLDIER-MS reviews
Two galaxies isolated from one another meet for the first time, just as the war between two opposing factions escalates. But the galaxy has more than first contact with a race of machines to worry about, ideals will be tested as an ancient evil returns to begin a cycle of genocide. A leader from the ranks of the Autobots must rise to stop both the Decepticons and the Reapers.
Crossover - Transformers/Beast Wars & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 34 - Words: 226,454 - Reviews: 272 - Favs: 439 - Follows: 428 - Updated: 12/18 - Published: 2/3/2014 - Optimus Prime, Megatron, Shepard
Titanic Impact by WetRagdoll reviews
The hero of Typhon Jack Cooper is lost in action along with his Titan BT 7274 crashing, literally into another. Does this world have a place for a pilot, if so; what about his Titan?
Crossover - Mass Effect & Titanfall - Rated: M - English - Sci-Fi/Adventure - Chapters: 3 - Words: 6,865 - Reviews: 16 - Favs: 139 - Follows: 192 - Updated: 12/17 - Published: 9/8/2022 - Tali'Zorah, Garrus V., Shepard, Jack C.
Noble and Not by Requiem of Life reviews
Six is half dead by the time Jun retrieves him from Reach. Neither of them are much better when slipspace malfunctions, and the end up in a world unlike their own. How will they be able to fight in another war they have no real stake in? Watch as the two living members of Noble Team fight to save another universe, but with more allies, friends, and more
Crossover - Halo & Mass Effect - Rated: M - English - Adventure/Romance - Chapters: 1 - Words: 5,289 - Reviews: 11 - Favs: 39 - Follows: 64 - Published: 12/17 - Jun-A266/Noble Three, SPARTAN-B312/Noble Six, Miranda L., Shepard
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: 6 - Words: 53,484 - Reviews: 140 - Favs: 374 - Follows: 507 - Updated: 12/17 - Published: 1/10 - Space Marines, Primarch/s, Councilor Tevos, Councilor Sparatus
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: 22 - Words: 494,021 - Reviews: 177 - Favs: 418 - Follows: 483 - Updated: 12/16 - Published: 6/6/2023 - Garrus V., Tali'Zorah, Shepard - Complete
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: 11 - Words: 135,468 - Reviews: 47 - Favs: 36 - Follows: 38 - Updated: 12/15 - Published: 8/11 - [OC, Princess Allura] [Ashley W., Shepard]
Saiyan Effect by bored peasant reviews
The Citadel Council weren't ready for a species with the power of the saiyans at their back.
Crossover - Mass Effect & Dragon Ball Super - Rated: T - English - Sci-Fi/Adventure - Chapters: 24 - Words: 144,303 - Reviews: 978 - Favs: 2,319 - Follows: 2,767 - Updated: 12/14 - Published: 8/9/2017 - Son Gohan, Son Goku, Vegeta
Same Story, different World by KE12 reviews
After choosing Synthesis, Shepard (F) awakes to find she is on Earth, just not her Earth, and she has a parasitic AI in her head. Aloy meanwhile questions just who and what she has found and tries to figure out if this entity can be the answer to all her problems or if it is just yet another world-ending threat. Set during HZN Forbidden West.
Crossover - Mass Effect & Horizon Forbidden West - Rated: K - English - Adventure - Chapters: 2 - Words: 6,752 - Reviews: 7 - Favs: 34 - Follows: 50 - Updated: 12/13 - Published: 8/13 - Harbinger, Shepard, Aloy, Erend/Erend Vanguardsman
Mass Effect: Spider and Wolf by Night Shadow76 reviews
The Spider-verse has been saved, the Inheritors had been defeated, and all is well. Well, except for one Spider. With his home gone and destroyed, he has no where to go, but with aid from Madam Web and The Other, he will have a new home, once that's on the edge of destruction. Now if only he could make sense of how Asari breeding works. Based loosely on the Inheritors storyline.
Crossover - Spider-Man & Mass Effect - Rated: M - English - Adventure - Chapters: 11 - Words: 63,552 - Reviews: 58 - Favs: 73 - Follows: 112 - Updated: 12/13 - Published: 6/12 - OC
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: 39 - Words: 92,426 - Reviews: 324 - Favs: 1,030 - Follows: 1,439 - Updated: 12/11 - Published: 2/6 - Harry P., J. Garson, Shepard
Priority: Terra by 1Ferrox reviews
A Custodian-led Solblade fleet from Warhammer 40k is thrown into the Mass Effect galaxy after a Chaos ambush disrupts their warp travel. Disoriented and cut off from the Astronomicon, they emerge near Palaven, where Turian forces desperately defend their home against the Reapers.
Crossover - Warhammer & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 2 - Words: 4,929 - Reviews: 20 - Favs: 75 - Follows: 103 - Updated: 12/11 - Published: 12/6 - Imperial Guard
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