Mass Effect Crossovers
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Exitium Eternal by MintyFeet reviews
A turian patrol ship encounters a mass relay unlike any other. The peoples of Citadel space and the Terminus have no idea that beyond it lies one thing: Doom.
Crossover - Doom & Mass Effect - Rated: M - English - Chapters: 15 - Words: 146,369 - Reviews: 66 - Favs: 425 - Follows: 525 - Updated: 1/30 - Published: 6/14/2021
Hunter Effect by Kurogane7 reviews
A/U: After years of fearing the unknown, the Council decides to get back up on the horse to explore the galaxy, sending two frigates through an unopened relay. What they find is a world of wonders and danger; a world of monsters. Rated T for now. Will incorporate elements from all MH games, and ME. Yes, Andromeda too.
Crossover - Mass Effect & Monster Hunter - Rated: T - English - Adventure - Chapters: 10 - Words: 56,777 - Reviews: 176 - Favs: 434 - Follows: 546 - Updated: 1/30 - Published: 7/30/2019
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: 19 - Words: 140,758 - Reviews: 161 - Favs: 528 - Follows: 569 - Updated: 1/28 - Published: 2/16/2017
Marooned by stevebond1990 reviews
An expedition sponsored by the Citadel Council crashes on planet 4546B - Oneshot for now.
Crossover - Mass Effect & SubNautica - Rated: T - English - Sci-Fi - Chapters: 1 - Words: 2,437 - Reviews: 8 - Favs: 51 - Follows: 49 - Published: 1/28 - Garrus V., Liara T'Soni, Tali'Zorah, Saren A.
Adversor Et Admorsus by PhoinexFire reviews
An ancient battle millennium old will soon begin again, forces of a dark order shall face an Empire of Light. Nations caught in the middle must choose and the future shall be shaped in the stars. Peace shall reign in the end, whether it comes in darkness or arises in light. One way or the other the darkness shall come and face the Terran Star Imperium. Sequel to Britannia Rising.
Crossover - Code Geass & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 9 - Words: 71,928 - Reviews: 120 - Favs: 367 - Follows: 492 - Updated: 1/25 - Published: 5/13/2020 - [Lelouch L., C.C.]
Exciting Opportunities by Of Questionable Veracity reviews
In an unexpected and highly unlikely turn of events, a catastrophic warp breach from a crippled ship manages to fling a Rogue Trader - or rather, the youngest son of a Rogue Trader - through time and space to a universe quite unlike what anyone on-board in used to. They make the best of the situation.
Crossover - Warhammer & Mass Effect - Rated: K+ - English - Chapters: 30 - Words: 157,623 - Reviews: 406 - Favs: 556 - Follows: 774 - Updated: 1/25 - Published: 4/15/2019 - J. Garson
I am a Super Krogan Now? by Illuviar reviews
This is a SI story inspired by the Worm CYOA v6, with ME elements. I'm writing it primary for fun. It's a time for a Wrex shaped wrench to meet the status quo on Earth Bet...
Crossover - Mass Effect & Worm - Rated: M - English - Sci-Fi/Adventure - Chapters: 10 - Words: 34,655 - Reviews: 116 - Favs: 1,026 - Follows: 1,197 - Updated: 1/22 - Published: 5/3/2021 - U. Wrex, Skitter
The Normandy's Nomad (Early Concept) by illFatedSuccess reviews
An early concept for a future story that see's V join Shepard's fight against the Collectors. This chapter focuses on Jack's recruitment mission and showcases Shepard's first time witnessing V and his cybernetics in action. Please do enjoy and leave a review on what you think.
Crossover - Mass Effect & Cyberpunk 2077 - Rated: M - English - Sci-Fi/Adventure - Chapters: 1 - Words: 5,928 - Reviews: 14 - Favs: 29 - Follows: 44 - Published: 1/21 - Garrus V., Shepard, V, Johnny Silverhand - Complete
The Return of Hope by Masso 2010 reviews
Commander Shepard is dead. Knowing that they needed someone to complete his work fighting against the Reapers, The Illusive Man set his sights on the next best thing, Humanities greatest hero. The only problem is that Superman gave up on hero work a long time ago but can the threat of galactic extinction be enough for him to once again step into the light.
Crossover - Superman & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 10 - Words: 79,970 - Reviews: 156 - Favs: 370 - Follows: 436 - Updated: 1/20 - Published: 7/10/2020 - Clark K./Kal-El/Superman, Miranda L.
Mass Effect: inFAMOUS by illFatedSuccess reviews
Humanity is dead. At least in its original form, and in its place stands the Conduit Race. When the turians attack and Earth is welcomed into the galactic community, will the Council, or any other race, be able to handle a species as physically dominant as the Conduits? Are the Reapers prepared to face a threat unlike any other in the countless cycles they've faced? Time will tell.
Crossover - Mass Effect & inFAMOUS - Rated: M - English - Sci-Fi/Adventure - Chapters: 3 - Words: 14,977 - Reviews: 10 - Favs: 74 - Follows: 109 - Updated: 1/20 - Published: 1/17 - Kaidan A., Shepard, Cole MacGrath, Delsin R.
Fire for Stellar Effect by vmoneywashere reviews
Somewhere along the lines of history, two Humanities would evolve in two galaxies. One of these Earths would unite an entire galaxy under its flag and defeat the unbidden. With no threats left in its home space, the United Nations of Solar Species decides that the Reapers make good target practice and invades to stop them. Extreme OP Humanity, AU, and curb-stomping Reapers.
Crossover - Mass Effect & Stellaris - Rated: T - English - Humor/Sci-Fi - Chapters: 9 - Words: 45,707 - Reviews: 44 - Favs: 220 - Follows: 281 - Updated: 1/19 - Published: 10/4/2021 - Tali'Zorah, Shepard, OC
Light's Guiding Shadow by ilidaria962 reviews
"Not all lights are good nor are all shadows evil sometimes in order to get things done the light has to become a shadow to serve the light."
Crossover - Destiny & Mass Effect - Rated: M - English - Friendship/Humor - Chapters: 6 - Words: 7,195 - Reviews: 4 - Favs: 13 - Follows: 16 - Updated: 1/19 - Published: 1/16 - Shepard, Exo, Ghost
The Unknown Defender by Gabenator5 reviews
While Shepard is closing in on Saren, something odd is happening in the Terminus systems. A new faction stirs, its green-clad enforcers seemingly unstoppable. Rumors spread, pirate bases going dark, both the enslaved and kidnapped alike are discovered free. Who are these new interlopers and what is their goal? For good or ill the powers that be intend to find out.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 18 - Words: 121,911 - Reviews: 1288 - Favs: 3,448 - Follows: 4,378 - Updated: 1/16 - Published: 9/27/2016 - Master Chief/John-117, Cortana, Tali'Zorah, Leviathan
Starwatch by CruxMDQ reviews
A youthful lieutenant Shepard unknowingly facilitates the release of an ancient evil and sets in motion a chain of events that will greatly influence the outcome of the first contact with Citadel species - and potentially threaten the standing of humanity among them. (Contributions: BrokenLifeCycle, kishinokurobi, kyro2009)
Crossover - Mass Effect & Overwatch - Rated: T - English - Adventure/Sci-Fi - Chapters: 63 - Words: 349,788 - Reviews: 167 - Favs: 296 - Follows: 356 - Updated: 1/15 - Published: 6/29/2016 - Shepard, Amélie L./Widowmaker, Lena O./Tracer, G. Reyes/Reaper
A FAMILY AGAINST THE GALAXYunder rewrite on SV by Captain Saint 1st reviews
under rewrite and will be forevermore be posted and updated on Sufficient Velocity to my account Captain Saint
Crossover - Fate/stay night & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 15 - Words: 71,645 - Reviews: 70 - Favs: 186 - Follows: 226 - Updated: 1/13 - Published: 4/10/2020
All the Stars by BlueWay reviews
When the Long Night of Solace is evaporated over Reach via the weaponized usage of a Slipspace Drive, it ferries with it in its swallowed sections the Covenant Empire and, more horrifyingly, the desperate measures that the UNSC used to fight them. When they are found in a universe on the precipice of their own history, the meaning of the term "Mass Effect" will change forever.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 38 - Words: 670,075 - Reviews: 1047 - Favs: 1,454 - Follows: 1,783 - Updated: 1/13 - Published: 6/8/2018 - SPARTAN-B312/Noble Six, Rookie
To Be the Last by Bruanshan Never-Seen reviews
A Halo/Mass Effect crossover, though not a typical one. This is the story of the last Forerunner, sent to a different galaxy entirely. How will he handle himself in this new glaxy where everything is different. Adopted from drich147. I corrected a mistake in chapter 3 regarding how long he has been there. I do not own Mass Effect or Halo.
Crossover - Halo & Mass Effect - Rated: M - English - Adventure - Chapters: 3 - Words: 13,070 - Reviews: 233 - Favs: 412 - Follows: 472 - Updated: 1/13 - Published: 7/28/2012 - Didact
Lost Son of Terra Phoenix by Ares007 reviews
For eons past, they enjoyed the harvest of their farms. Countless civilizations breathed life because they allowed it. Now, they will die because he demands it. Halo/Mass Effect but with heavy elements from Warhammer 40k. M-Shep/Miranda, OC/Liara. HFY
Crossover - Halo & Mass Effect - Rated: M - English - Adventure/Romance - Chapters: 9 - Words: 50,229 - Reviews: 30 - Favs: 93 - Follows: 117 - Updated: 1/13 - Published: 11/29/2021 - [SPARTAN-B312/Noble Six, Oriana L.]
Mass Effect: Beyond The Veil by SaibotReaper Productions reviews
What Makes A Legend? Is it his his deeds. His Triumphs. What say you when you are ripped from the pages of the history that was written for you. And what shall two little lights become when they know not the path and who shall guide them? Ahh such is the price of free will and so the great game begins after all Light and Dark. Are tools for our use to become gods.
Crossover - Mass Effect & Destiny - Rated: T - English - Sci-Fi/Adventure - Chapters: 1 - Words: 6,055 - Reviews: 5 - Favs: 36 - Follows: 41 - Published: 1/13 - Garrus V., Liara T'Soni, Guardian, Oryx
System Alliance Rise to Power by Konradoziom reviews
Humanity discovered the ruins of an ancient civilization on Mars in 2148 and made their first contact in 2157. However, the galaxy was not what they expected. With relays as the only defensive line between freedom and tyranny, System Alliance will make decisions that will change the image of the galaxy while starting its rise to power.
Crossover - Star Wars & Mass Effect - Rated: K+ - English - Chapters: 15 - Words: 20,106 - Reviews: 22 - Favs: 84 - Follows: 91 - Updated: 1/11 - Published: 12/27/2021 - Complete
No Greater Calling by silencewillfall0091 reviews
Because here's the thing. Turians, despite their reputations, had never loved war- not the suffering, the dying, nor the pain. They loved victory- the prevailing of clear good over clear evil- justice winning in the end, the beating of overwhelming odds for peace. And there was never more a clear example of this type of war than ours against the Covenant.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 2 - Words: 3,304 - Reviews: 33 - Favs: 143 - Follows: 247 - Updated: 1/11 - Published: 1/7
Halo: A New Journey by mgarner3199 reviews
Master Chief wakes up in the Mass Effect universe and joins Commander Shepard in an effort to stop the Reapers. With time running out, can they stop the extinction of every species, or will they fade into legend?First, they got to stop the Reapers though...
Crossover - Halo & Mass Effect - Rated: K - English - Sci-Fi/Romance - Chapters: 2 - Words: 1,571 - Reviews: 12 - Favs: 25 - Follows: 54 - Updated: 1/10 - Published: 12/7/2021 - Cortana, Master Chief/John-117, Illusive Man, Shepard
Accounts of the Flood conflicts by hunter 139 reviews
A multicrossover series of one-shots depicting several franchises and their encounters with the Flood. I do not own Halo or any other franchises depicted in these stories.
Crossover - Halo & Mass Effect - Rated: T - English - Horror/Sci-Fi - Chapters: 40 - Words: 98,854 - Reviews: 203 - Favs: 163 - Follows: 176 - Updated: 1/8 - Published: 1/15/2015 - Gravemind
The Galaxy under an Iron Heel by KanisRussell reviews
After conquering the Earth and placing it beneath the heavy weight of a jackboot, the Third Reich sets it's hungry eyes on a new target. The Final frontier. They discover things they never thought possible, and quickly finds that they might not be the only masterrace in existence. "Life does not forgive weakness"
Crossover - Mass Effect & Wolfenstein series - Rated: M - English - Adventure/Sci-Fi - Chapters: 19 - Words: 85,873 - Reviews: 197 - Favs: 311 - Follows: 389 - Updated: 1/8 - Published: 8/17/2017 - Garrus V., Liara T'Soni, Shepard, OC
The Wrong Time But The Right Hero by robotgod456 reviews
Sometimes all it takes to change the galaxy is having the right person in the wrong time. Trapped frozen for over 200 hundred years Izuku Midoriya awakens to a world that grows more and more unfamiliar to him. As ancient horrors start to awaken and the galaxy grows more darker sometimes all it really takes is one hero in a galaxy lacking of one.
Crossover - Mass Effect & My Hero Academia/僕のヒーローアカデミア - Rated: M - English - Adventure/Sci-Fi - Chapters: 8 - Words: 44,156 - Reviews: 31 - Favs: 178 - Follows: 237 - Updated: 1/8 - Published: 10/31/2021 - Tali'Zorah, Izuku M.
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