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Fall of the Citadel (reboot) by Richard Scepton reviews
Many years have passed since our great victory. But as we rejoice in light of what the future has for us, we also equally weep, shed tears of sorrow, for the dearly departed who have fallen for this victory to be a reality. But what was our suffering to the innocent? What was our morals to the haughty? What was, our efforts, our sacrifices, to the complacent?
Crossover - Mass Effect & Kantai Collection - Rated: T - English - Sci-Fi/Adventure - Chapters: 2 - Words: 14,670 - Reviews: 3 - Favs: 11 - Follows: 14 - Updated: 6h - Published: 8/4 - Admiral Hackett, Shepard, OC, Fubuki
The mark of the federation of independent species by migos501 reviews
(TESTING PHASE)“A single event can shape our lives or change the course of history.” United under a single banner, the federation stands as a testament that any species can thrive in harmony, gifted with technology that can tip the scale of an entire galaxy, they now face with a entirely new government and it’s sets of challenges(focusing on the mass effect story)
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 3 - Words: 82,217 - Reviews: 40 - Favs: 89 - Follows: 113 - Updated: 12h - Published: 10/6/2023 - Master Chief/John-117, Shepard
Quintessence Effect the Rise of Lotor by EvaShinobiKaiserKnight reviews
A year has passed since the battle of the Citadel. Haggar has all but vanished and despite tragedy the Paladins continue to defend the Universe. But those from the ancient past have arrived seeking the aid of these new Paladins. A clue to her people is found. Now the Paladins must aid the mysterious Lotor to save not only the Alteans but construct a weapon to defeat the Reapers.
Crossover - Mass Effect & Voltron: Legendary Defender - Rated: M - English - Sci-Fi/Adventure - Chapters: 4 - Words: 35,935 - Reviews: 3 - Favs: 21 - Follows: 21 - Updated: 14h - Published: 8/2 - [Princess Allura, OC] Lotor
Mass Effect: EXT SIGMA by IceFoxie reviews
The UNSC Infinity and her fleet escape the Didact's final bid to stop humanity from claiming the Mantle. By using the EXT SIGMA protocol, the fleet finds itself in uncharted space. Humans don't exist in this Mass Effect. How will the natives react to the UNSC refugees?
Crossover - Halo & Mass Effect - Rated: M - English - Adventure/Drama - Chapters: 5 - Words: 16,335 - Reviews: 14 - Favs: 88 - Follows: 116 - Updated: 21h - Published: 7/28
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: 5 - Words: 26,519 - Reviews: 15 - Favs: 29 - Follows: 42 - Updated: 8/5 - Published: 6/12 - OC
XCOM Terran Empire by emperorcaligula05 reviews
Sometime after the fall of the Elders at the hands of XCOM, a new government had formed from the combined efforts of the Reapers and the Templars, one that wished to see aliens not just exterminated from the face of the Earth but the eminent domain of human space. Will the might of the Citadel triumph over this new player or will the empires be swept forevermore into the dust bin?
Crossover - X-Com & Mass Effect - Rated: T - English - Sci-Fi/Angst - Chapters: 2 - Words: 8,003 - Reviews: 9 - Favs: 22 - Follows: 29 - Updated: 8/4 - Published: 8/1 - Liara T'Soni, Councilor Valern, Councilor Tevos, Councilor Sparatus
Outlaws of the Verse by Coltkit Prods. Omniva Verse reviews
In the World of "The Last Spartan" by "DinoJake" (Sequel/Spinoff/AU/Multi-Xover). 1000 years since the Reapers' defeat. People stopped aging (Supposedly caused by the wave that reprogrammed the Reapers). Kept sustainable by Replicators, Dyson Spheres, & Magic. Meanwhile: 3 Powers battle for the soul of the Galaxies: The Space Forces, Pirates, & The Outlaws. My OCs must choose sides
Crossover - Mass Effect & Halo - Rated: T - English - Sci-Fi/Family - Chapters: 11 - Words: 82,047 - Reviews: 4 - Favs: 16 - Follows: 13 - Updated: 8/4 - Published: 10/21/2023 - OC, OC, Master Chief/John-117, Shepard
Buzzard Buccaneer Radio by General Rage reviews
Boz the Buzzard hosts this pirate radio station, beaming out music to the Normandy, Fallen Serpent, Crusty Chorka and Ascendant Justice non-stop. BBR has only one mission, to keep Rock n Roll alive in the dark void of outer space. A companion story to "Remnants" that shows what happens while Shepard is off playing hero. Part of the Wormhole Chronicles Saga.
Crossover - Halo & Mass Effect - Rated: M - English - Humor/Sci-Fi - Chapters: 12 - Words: 93,530 - Reviews: 101 - Favs: 105 - Follows: 117 - Updated: 8/4 - Published: 9/21/2016 - OC
The Bureau of Multiverse Affairs by RedFrontWriter
Recruited by the mysterious Lutece twins, a band of heroes are sent on a mission to hunt down the sinister Professor Moriarty as he attempts to become the greatest criminal in the multiverse.
Crossover - Doctor Who & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 24 - Words: 111,602 - Favs: 7 - Follows: 11 - Updated: 8/4 - Published: 3/3 - 4th Doctor, Sarah Jane S., Garrus V., 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: 97 - Words: 423,229 - Reviews: 402 - Favs: 465 - Follows: 584 - Updated: 8/4 - Published: 8/7/2022
Operation ECLIPSE - Apocrypha and Sidestories by HelenTheMoon reviews
Omakes, sidestories and Apocrypha written by me and others for Operation ECLIPSE. The Sidestories are canon, the rest just for fun. Feel free to submit content yourselves! (I'll credit you, obviously)
Crossover - Sonic the Hedgehog & Mass Effect - Rated: T - English - Chapters: 26 - Words: 25,399 - Reviews: 38 - Favs: 26 - Follows: 22 - Updated: 8/4 - Published: 12/25/2023
Of Shepards and Imperials by Mandrake109 reviews
One of the oldest living perpetuals along with the remains of an inquisitorial retinue are transported into an alternative past where aliens are not simply foes to slay but friends and allies to mankind. For the perpetual it's a nice change of pace for the others? Well they may learn that co-existence might not be such a bad thing after all... Rated M for obvious reasons.
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi/Fantasy - Chapters: 10 - Words: 112,899 - Reviews: 88 - Favs: 232 - Follows: 321 - Updated: 8/3 - Published: 3/7/2019 - Imperial Guard, OC, Shepard
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: 13 - Words: 171,604 - Reviews: 246 - Favs: 1,086 - Follows: 1,527 - Updated: 8/3 - Published: 11/9/2020 - SPARTAN-B312/Noble Six, Tali'Zorah, Miranda L., Shepard
Operation ECLIPSE by HelenTheMoon reviews
Pre-ME1 post-Frontiers Xover, in which the Sonic version of Earth replaces ME Earth. A Batarian planet suddenly turns invisible, and things only get weirder from there. That poor STG agent won't know what hit him, that's for sure. And neither will the rest of the galaxy - once Sonic and Eggman get there. Crossposted on Spacebattles and AO3. Rating may change.
Crossover - Sonic the Hedgehog & Mass Effect - Rated: T - English - Sci-Fi/Fantasy - Chapters: 11 - Words: 118,217 - Reviews: 63 - Favs: 79 - Follows: 105 - Updated: 8/3 - Published: 11/26/2023 - Sonic, Tails, OC
Star Mahou effect by phantompain12 reviews
Tanya finally winds up in mass effect after having dealt with Being X. Starkiller's son too ends up in mass effect after his own sacrifice to stop the empire. This is something like that. I have no idea what I am going to write. Author note: Guys, I don't know what the hell I am doing. I just decided to write and this is the result. Any help would be appreciated as Eng is 2nd lang.
Crossover - Star Wars & Mass Effect - Rated: T - English - Humor/Adventure - Chapters: 19 - Words: 42,325 - Reviews: 36 - Favs: 71 - Follows: 86 - Updated: 8/3 - Published: 1/30
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: 17 - Words: 89,211 - Reviews: 96 - Favs: 178 - Follows: 227 - Updated: 8/3 - Published: 4/26 - Liara T'Soni, Tali'Zorah, Miranda L., 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: 27 - Words: 97,708 - Reviews: 185 - Favs: 596 - Follows: 876 - Updated: 8/2 - Published: 7/8/2022 - Rookie, 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: 45 - Words: 944,384 - Reviews: 872 - Favs: 518 - Follows: 597 - Updated: 8/1 - Published: 4/22/2016 - Master Chief/John-117, Cortana, Tali'Zorah, Shepard
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: 10 - Words: 206,310 - Reviews: 645 - Favs: 2,312 - Follows: 2,395 - Updated: 7/31 - Published: 2/2/2014 - Ranma, Kasumi G., Tali'Zorah, Samara
Quintessence Effect by EvaShinobiKaiserKnight reviews
From Cycles of long ago from uncharted regions of the universe comes a legend, the legend of Voltron the Legendary Defender of the Universe. A mighty robot loved by good feared by evil. As the cycles repeat the return of a great threat awoken a slumbering princess of a lost people would gather five new Paladins so they may bring back Voltron the Legendary Defender of the Universe.
Crossover - Mass Effect & Voltron: Legendary Defender - Rated: M - English - Sci-Fi/Fantasy - Chapters: 14 - Words: 141,475 - Reviews: 30 - Favs: 44 - Follows: 41 - Updated: 7/31 - Published: 7/14 - [Princess Allura, OC] [Shepard, Ashley W.] - Complete
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: 19 - Words: 118,026 - Reviews: 226 - Favs: 379 - Follows: 546 - Updated: 7/30 - Published: 8/7/2023
Guardian of Humanity by DarkRock reviews
This is a possible future of "The Gods Bleed" story.
Crossover - Naruto & Mass Effect - Rated: M - English - Adventure/Mystery - Chapters: 2 - Words: 2,784 - Reviews: 3 - Favs: 17 - Follows: 21 - Updated: 7/29 - Published: 6/15 - Naruto U.
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: 90 - Words: 354,651 - Reviews: 865 - Favs: 870 - Follows: 1,140 - Updated: 7/28 - Published: 5/5/2019 - Legion, Pyrrha N., Penny P., God of Darkness - Complete
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: 21 - Words: 63,617 - Reviews: 30 - Favs: 65 - Follows: 68 - Updated: 7/28 - Published: 2/15 - [Ben T., Miranda L.] Ship, Shepard
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 another galaxy's mankind may yet make a significant difference in the galaxy's period of peace. The Council will stare down the wonders and horrors of the Collapse.
Crossover - Mass Effect & Starsector - Rated: M - English - Sci-Fi/Adventure - Chapters: 13 - Words: 63,377 - Reviews: 53 - Favs: 118 - Follows: 155 - Updated: 7/27 - Published: 3/11 - Garrus V., Liara T'Soni, Admiral Hackett, C. Pressley
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