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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: 182 - Favs: 657 - Follows: 710 - 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: 82 - Updated: 10/4 - Published: 6/12 - OC
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: 433 - Favs: 843 - Follows: 917 - Updated: 10/2 - Published: 3/27/2023 - Naruto U., Shepard
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: 24 - Favs: 134 - Follows: 180 - Updated: 10/1 - Published: 8/6/2023
Edge of the Abyss by bh18 reviews
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 - Reviews: 1 - Favs: 15 - Follows: 16 - Updated: 10/1 - Published: 9/16 - Shepard
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: 43 - Follows: 52 - Updated: 9/27 - Published: 6/15
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: 66 - 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 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: 495 - Updated: 9/24 - Published: 8/18/2020 - Amuro R., Char A., Tali'Zorah, Admiral Hackett
Drake, Emissary by Scififan33 reviews
Tim could say with certainty that he was having a bad day. Stupid magician, stupid spells. They had a plan to deal with him, they did! That plan did not involved Tim being hit. Or waking up on an alien planet. But he could adapt. But what he really wanted was to go home. Since he couldn't, he'd help them find a way to peace with their creators, they had saved his life after all
Crossover - Batman & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 6 - Words: 27,153 - Reviews: 19 - Favs: 65 - Follows: 86 - Updated: 9/24 - Published: 8/24 - Timothy D./Red Robin, Tali'Zorah, Shepard
When magic decides one war isn't enough by Alykto reviews
Following Voldemort's return after the Triwizard Tournament, Dumbledore realized he couldn't possibly handle the incoming conflict on his own. He needed a general to prepare the war. His summoning ritual then dragged Commandant Shepard, Specter and N7 Alliance Marine fighting the Reapers to 12 Square Grimmault.
Crossover - Harry Potter & Mass Effect - Rated: T - English - Adventure/Hurt/Comfort - Chapters: 8 - Words: 13,221 - Reviews: 14 - Favs: 32 - Follows: 40 - Updated: 9/23 - Published: 6/29/2023 - Harry P., Ron W., Hermione G., Shepard
Galactic Conflicts: Tales of First Contact by TheDoctor1998 reviews
Humanity and its allies have stood strong after the Great War with the Covenant. Follow the Systems Alliance as it goes through a first contact nearly as disastrous as the one that lead to the Great War.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 10 - Words: 46,207 - Reviews: 249 - Favs: 484 - Follows: 678 - Updated: 9/22 - Published: 2/6/2023
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: 22 - Words: 48,208 - Reviews: 47 - Favs: 82 - Follows: 103 - Updated: 9/21 - Published: 1/30
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: 3 - Words: 7,295 - Reviews: 25 - Favs: 69 - Follows: 91 - Updated: 9/20 - Published: 6/11 - Izuku M., Nezu/The Principal
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: 37 - Words: 88,622 - Reviews: 297 - Favs: 952 - Follows: 1,340 - Updated: 9/20 - Published: 2/6 - Harry P., J. Garson, Shepard
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: 29 - Words: 439,466 - Reviews: 587 - Favs: 780 - Follows: 925 - Updated: 9/20 - Published: 12/28/2020 - OC, U. Wrex, Shepard, Councilor Tevos
Stellaris Book 2: The Shadow of Cerberus by Stormhawk fan SHhype reviews
Mega Multi Crossover, Main aspects are Storm Hawks and Mass Effect, with characters from Stargate, Star Wars and more, Sequel to Stellaris Book 1: The Fledging. A year has passed since the Liberation of Atmos. Piper, Aerrow and Finn have joined Lark at the ACPA, while Shepard has returned to the UNE Navy. Meanwhile Repton has escaped execution with new allies, and a new plan.
Crossover - Storm Hawks & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 3 - Words: 29,834 - Reviews: 8 - Favs: 11 - Follows: 8 - Updated: 9/19 - Published: 5/27/2021 - Piper, Cyclonis, Illusive Man, 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. NOW ON TV TROPES!
Crossover - Sonic the Hedgehog & Mass Effect - Rated: T - English - Sci-Fi/Fantasy - Chapters: 13 - Words: 139,994 - Reviews: 78 - Favs: 98 - Follows: 122 - Updated: 9/19 - Published: 11/26/2023 - Sonic, Tails, OC
The Boundary Effect - The Path of a Magician by xyzdreadnought reviews
Isika Valao is a young Asari child, with nothing to her name and a lot to prove. Enamoured by magic and the Alliance, she sets out to become what should Be impossible for the naturally biotic Asari, a magician. With the help of a certain ordinary Magician, she just might make that dream a reality. (A spin off Story to the Boundary Effect, written with Permission)
Crossover - Mass Effect & Touhou Project - Rated: T - English - Sci-Fi/Fantasy - Chapters: 13 - Words: 44,968 - Reviews: 52 - Favs: 217 - Follows: 290 - Updated: 9/18 - Published: 12/17/2018 - OC, Alice M., Marisa K.
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: 49 - Words: 161,466 - Reviews: 66 - Favs: 310 - Follows: 325 - Updated: 9/17 - Published: 8/2/2019
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: 15 - Words: 41,732 - Reviews: 17 - Favs: 78 - Follows: 95 - Updated: 9/17 - Published: 1/3/2023 - Liara T'Soni, Miranda L., Shepard
Canadian Blues: Badge of Honor by brooklynrhyno reviews
The Citadel Party is in full swing, but Shepard has an unexpected guest wanting a moment of her time.
Crossover - X-Men & Mass Effect - Rated: T - English - Sci-Fi/Humor - Chapters: 1 - Words: 4,299 - Reviews: 3 - Favs: 7 - Follows: 2 - Published: 9/16 - James H./Wolverine/Logan, U. Grunt, Shepard - Complete
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: 33 - Words: 219,742 - Reviews: 264 - Favs: 409 - Follows: 405 - Updated: 9/16 - Published: 2/3/2014 - Optimus Prime, Megatron, 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: 30 - Words: 106,475 - Reviews: 194 - Favs: 635 - Follows: 919 - Updated: 9/16 - Published: 7/8/2022 - Rookie, Shepard
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