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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: 27 - Words: 153,869 - Reviews: 152 - Favs: 230 - Follows: 287 - Updated: 8h - Published: 4/26 - Liara T'Soni, Tali'Zorah, Miranda L., Shepard
Petroleum Effect by PetroleumHead reviews
A dark alternative Mass Effect universe with a little bit of XCOM and Cthulhu Mythos, along with some very sinister Care Bears. If humanity discovers that, in the right circumstances, petroleum can be used as a superior alternative to element zero, just how far will Earth's increasingly post-human, racist, xenophobic, authoritarian government go to obtain oil? (Complete 07-10-2024)
Crossover - Mass Effect & Cthulhu Mythos - Rated: M - English - Sci-Fi/Horror - Chapters: 22 - Words: 85,099 - Reviews: 35 - Favs: 53 - Follows: 65 - Updated: 13h - Published: 9/16/2023 - D. Anderson, Saren A., Miranda L., Shepard - 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: 23 - Words: 141,101 - Reviews: 262 - Favs: 417 - Follows: 585 - Updated: 14h - Published: 8/7/2023
Quintessence Effect Andromedas Defender by EvaShinobiKaiserKnight reviews
The Andromeda Initiative a pioneer's journey into the great unknown. On Arks the species of the milky way travel to parts unknown. But in such a journey dangers are sure to follow. So, if one were to make a journey one should always bring tools of defense. But the Initiative has a new defender aiding them, and his name is Vehicle Voltron the Invincible Defender of Andromeda System!
Crossover - Voltron & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 2 - Words: 22,903 - Reviews: 3 - Favs: 14 - Follows: 15 - Updated: 18h - Published: 9/17 - Ginger, OC, Scott R., SAM
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: 13 - Words: 29,754 - Reviews: 119 - Favs: 96 - Follows: 141 - Updated: 10/6 - Published: 9/8
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: 13 - Words: 76,001 - Reviews: 41 - Favs: 33 - Follows: 49 - Updated: 10/6 - Published: 7/7 - Garrus V., Shepard, Osiris, Cayde-6
Odyssey of the Untrodden by RamPluto reviews
After centuries of relative peace and isolation, the races of Citadel Space have decided to make the bold and historic step of activating a dormant Relay. Unknowing stumblingly into a war that will change the shape of the entire galaxy.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 2 - Words: 8,943 - Reviews: 38 - Favs: 113 - Follows: 161 - Updated: 10/5 - Published: 10/1 - Master Chief/John-117, Garrus V., Tali'Zorah, Liara T'Soni
Mass effect: Beginning of the Heresy by islamov301 reviews
Captain John Shepard and his loyal crew stopped Saren and destroyed Sovereign, an ancient Reaper who was trying to take over the Citadel to bring his army here and destroy all intelligent life in the galaxy. Shepard knew that Sovereign's death was only the beginning of the war, but every night he wondered: "Why are the Reapers destroying life in the galaxy?"
Crossover - Warhammer & Mass Effect - Rated: T - English - Romance/Adventure - Chapters: 5 - Words: 23,380 - Reviews: 38 - Favs: 33 - Follows: 37 - Updated: 10/5 - Published: 9/8 - [Tali'Zorah, Shepard]
The Dead Zone by Two-Eyed Charlie
Commander Shepard was one of the most promising marines in Alliance history. That all changed on Eden Prime, when contact with a Prothean Beacon left him in a coma for six months. Now he can see things, things that can only happen in the future. Things like a Spectre and a politician unleashing something horrifying on the galaxy. A fusion fic of Mass Effect and The Dead Zone.
Crossover - Mass Effect & Dead Zone - Rated: M - English - Suspense/Sci-Fi - Chapters: 1 - Words: 8,775 - Favs: 1 - Follows: 1 - Published: 10/5 - D. Anderson, Shepard, T. Vasir, Barla V.
Terran Federation: Counterstrike by L4 of the WEST reviews
It's been 8 years since the end of the 2nd Bug war. Humanity is starting to enter its golden age in the galactic stage, with technology no one can replicate, with allies that no one has accepted, and a military capable of taking on any competitor it seems. But that will change, those who employ chains are circling like wolves, and an enemy thought dead return
Crossover - Starship Troopers & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 21 - Words: 155,732 - Reviews: 180 - Favs: 653 - Follows: 706 - Updated: 10/4 - Published: 2/16/2017
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: 9 - Words: 57,175 - Reviews: 42 - Favs: 54 - Follows: 81 - Updated: 10/4 - Published: 6/12 - OC
Mass Effect: Augment by j30052776 reviews
Jon Noonien-Singh, now Sheppard, continues the fight against Tyrants unlike any seen in this cycle. They have changed, but war never does.
Crossover - Fallout & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 8 - Words: 38,442 - Reviews: 3 - Favs: 18 - Follows: 22 - Updated: 10/3 - Published: 9/19
Outlaws of the Verse (Unofficial Sequel: The Last Spartan by DinoJake) by Omniva Verse reviews
1000 years after the Reapers were reprogrammed, 3 powers fight for dominance in the galaxy. The Space Forces, Pirates, and of course The Outlaws. (Multi-Xover, AU, Unofficial Sequel): Ship's Crew and Lore, from various other franchises
Crossover - Mass Effect & Halo - Rated: T - English - Sci-Fi/Family - Chapters: 11 - Words: 83,040 - Reviews: 4 - Favs: 16 - Follows: 15 - Updated: 10/3 - Published: 10/21/2023 - OC, OC, Master Chief/John-117, Shepard
The Galaxy's last shinobi by Kfbanime87 reviews
As for summary. His planet and people were gone. Destroyed by the reapers. But he survived. Now thousands of years in the future, Naruto must navigate a galaxy unfamiliar to him along with his ragtag crew of friends. All while he makes a name for himself and makes plans to destroy the reapers when they return
Crossover - Naruto & Mass Effect - Rated: M - English - Adventure/Humor - Chapters: 7 - Words: 65,973 - Reviews: 421 - Favs: 837 - Follows: 911 - Updated: 10/2 - Published: 3/27/2023 - Naruto U., Shepard
Bite: ME by FriTik reviews
Sometimes a quarian's pilgrimage will take them into deep space. Most return from these journeys but there are many who do not. In such cases search teams may be sent to find these lost pilgrims and take them home. But this lost pilgrim found Copper 9, and the metal nightmares that call it home.
Crossover - Mass Effect & Murder Drones - Rated: M - English - Horror/Sci-Fi - Chapters: 8 - Words: 48,262 - Reviews: 53 - Favs: 52 - Follows: 78 - Updated: 10/2 - Published: 9/8 - J
The Traveler's Second Chance by Caldesan reviews
The Traveler has a different response to the Darkness. A story where the Guardians never accept the Darkness. The Traveler gave them a second chance, what do they do with it? Destiny shows up in Mass Effect. OC's for Destiny MC and Ghosts, different take on Destiny Lore
Crossover - Mass Effect & Destiny - Rated: M - English - Adventure/Romance - Chapters: 9 - Words: 85,980 - Reviews: 23 - Favs: 132 - Follows: 178 - Updated: 10/1 - Published: 8/6/2023
Edge of the Abyss by bh18
As vengeance for the Skyllian Blitz, the Alliance anti-piracy campaign comes to Torfan. Their intent is to stifle piracy and slave trafficking in the Verge for years with this blow. It all goes wrong, and yet somehow succeeds because of something entirely unexpected.
Crossover - Mass Effect & Kantai Collection - Rated: M - English - Sci-Fi - Chapters: 2 - Words: 18,568 - Favs: 10 - Follows: 11 - Updated: 10/1 - Published: 9/16 - Shepard
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: 16 - Words: 411,562 - Reviews: 150 - Favs: 383 - Follows: 459 - Updated: 9/28 - Published: 6/6/2023 - Garrus V., Tali'Zorah, Shepard
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: 8 - Words: 20,720 - Reviews: 11 - Favs: 54 - Follows: 83 - Updated: 9/28 - Published: 8/27 - [Lone Wanderer, Tali'Zorah]
Unknown Territory by giblo126 reviews
Earth was under siege by the Strogg, with no escape in sight. When the Turians find them, they're quick to jump in to the fray. But they just might open up a war none of them saw coming...
Crossover - Quake & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 6 - Words: 8,182 - Reviews: 25 - Favs: 42 - Follows: 51 - Updated: 9/27 - Published: 6/15
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/Horror - Chapters: 9 - Words: 56,995 - Reviews: 20 - Favs: 45 - Follows: 56 - Updated: 9/27 - Published: 8/4 - Admiral Hackett, Shepard, OC, Fubuki
Gundam SEED: The League Crisis by Tristraim reviews
With the the Second Valentine War a distant memory, a revenant from the past, armed with technology far beyond, has come as a final obstacle to the future. GSDxME, pre-First Contact War.. Canon pairings.
Crossover - Gundam Seed & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 5 - Words: 16,734 - Reviews: 16 - Favs: 51 - Follows: 65 - Updated: 9/26 - Published: 11/12/2021 - Kira Y., Lacus C., Hannah S.
Shepard Reborn (A Blue Archive X Mass Effect Crossover Story) by Dr.HeavyWeaponsguy reviews
Commander John Shepard was a hero to a galaxy now, he must save a new world.
Crossover - Mass Effect & Blue Archive - Rated: T - English - Chapters: 3 - Words: 4,023 - Reviews: 4 - Favs: 4 - Follows: 6 - Published: 9/24 - Shepard
A dawning Era by Lighting wolf knight
What happens when a regular battle between the Republic and Separatists sends Anakin, Obi-Wan, Ahsoka, and both the 501st and 212th into a new reality? Chaos... And a new destiny. Rated T for violence, death, and profanity.
Crossover - Star Wars & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 1 - Words: 820 - Favs: 11 - Follows: 13 - Published: 9/24 - Luke S., Anakin Skywalker, OC, Vetra N.
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: 26 - Words: 125,748 - Reviews: 151 - Favs: 400 - Follows: 494 - Updated: 9/24 - Published: 8/18/2020 - Amuro R., Char A., Tali'Zorah, Admiral Hackett
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