Mass Effect Crossovers
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Mass Effect 3: X-TENDED CUT by Fug Chugson reviews
An inane multi-crossover fanfic about a sociopathic Commander Shepard's trials and tribulations in beating the Reapers. United with a cast from several science-fiction franchises, Shepard has to stop the Reapers from draining Earth of its most precious resource: deviant pornography. Watch our hero's hijinks as he endeavors to deliver his fans an ending they'll actually like!
Crossover - Mass Effect & Star Wars - Rated: M - English - Humor/Parody - Chapters: 10 - Words: 23,451 - Reviews: 10 - Favs: 5 - Follows: 1 - Updated: 4/6 - Published: 5/10/2017 - Luke S., Han S., Liara T'Soni, Shepard
The True Way Of The Sith - Part Two by Writing Shop 12 reviews
Sequel to The True Way Of The Sith. The Mass Effect Relay has been activated and a whole new galaxy of opportunity comes with it. What will Lily Potter, the Crown Princess of the Sith Empire, do with this new chance for adventure? And more importantly, will her father let her go into the unknown on her own? Citadel space beware, the Sith have come. (Harry x Harem) (Lily x Shepard)
Crossover - Harry Potter & Mass Effect - Rated: M - English - Adventure/Romance - Chapters: 4 - Words: 22,165 - Reviews: 267 - Favs: 1,859 - Follows: 2,412 - Updated: 4/5 - Published: 1/8 - Harry P., Liara T'Soni, Tali'Zorah, Shepard
Azure Resilience by MarredTales reviews
New planets were always to be considered dangerous and for this asari huntress it was no different. Surviving the reaper war without knowledge of the outcome, she must use her abilities to her advantage to ensure her survival and find herself a place amongst the world. It was just bad luck that she arrived during a blight.
Crossover - Mass Effect & Dragon Age - Rated: M - English - Fantasy/Adventure - Chapters: 6 - Words: 19,581 - Reviews: 8 - Favs: 11 - Follows: 25 - Updated: 4/4 - Published: 1/30 - OC, Cailan T.
Mass Effect: A Guardsman's Tale by IX404 reviews
There are many tales of extraordinary heroes within the Imperium of Man, but every once in a while, one finds one that is unique among them all. This is the tale of a Guardsman that not only upheld his duty to the Emperor of Mankind, but also enabled the survival of a distant, and alien, galaxy.
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi/Drama - Chapters: 3 - Words: 16,659 - Reviews: 26 - Favs: 125 - Follows: 180 - Updated: 4/4 - Published: 3/18 - Imperial Guard, OC, Shepard
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: 5 - Words: 19,313 - Reviews: 6 - Favs: 49 - Follows: 59 - Updated: 4/4 - Published: 1/3 - Liara T'Soni, Miranda L., Shepard
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: 40 - Words: 136,261 - Reviews: 51 - Favs: 254 - Follows: 263 - Updated: 4/4 - Published: 8/2/2019
Galactic Hero's Effect by fitoxi reviews
'Returner':This Quirk sent Izuku to another world, only to return him to Quirk world aferwards, retaining all the powers he had obtained.Unfortunately, no one will believe him if he tries to reveal the origin of his others Quirks,'Biotics/Omnitool' and much less will they believe the tale that he was the greatest hero of an entire galaxy[Izuku OOC/Initially,Vigilant/only2 Romances]
Crossover - Mass Effect & My Hero Academia/僕のヒーローアカデミア - Rated: T - English - Adventure/Romance - Chapters: 5 - Words: 59,865 - Reviews: 32 - Favs: 221 - Follows: 278 - Updated: 4/4 - Published: 3/3/2022 - [Liara T'Soni, Himiko Toga, Izuku M.] Ochako U.
Garden of Conquest by SirBearington reviews
Being a planet can be quite challenging especially when they live in the most hostile environment known to man. Everything could technically end them. From other planets, wandering stars or even black holes. There's a never ending list of things that could ruin their day. At least they have tentacles to protect themselves. What do you mean planets aren't supposed to have tentacle?
Crossover - Cartoon X-overs & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 10 - Words: 18,353 - Reviews: 16 - Favs: 84 - Follows: 106 - Updated: 4/4 - Published: 3/1
N7: Prime by Leopardman reviews
John and Jane succeeded in stopping the Reapers. But what if they were sent to the TFP universe?
Crossover - Mass Effect & Transformers/Beast Wars - Rated: M - English - Adventure/Sci-Fi - Chapters: 1 - Words: 3,835 - Reviews: 2 - Favs: 2 - Follows: 3 - Published: 4/4 - Shepard, Optimus Prime, Elita One
War of the Old Ones by Ian the Mechanic reviews
In forgotten ages past, two near eldritch forces vied for the very life essence of the Galaxy. Unknown to the young races, that war is still ongoing. how can the UNSC, the Citadel Council or the Covenant hope to stand against such forces, when they are still embroiled in their own petty squabbling? How could they hope to survive the War of the Old Ones?
Crossover - Mass Effect & Halo - Rated: M - English - Sci-Fi/Horror - Chapters: 18 - Words: 96,739 - Reviews: 104 - Favs: 229 - Follows: 340 - Updated: 4/3 - Published: 2/21/2022
Mass Wars Episode II by Fantasymaker76 reviews
Five Years have past since the destruction of the Normandy and the death of Commander Shepard. Now a new order is rising in the unmapped regions of the galaxy which is leaving unease in both the Republic and the Citadel. Determined to find out what is going on, a pro-human organisation has made plans to find out what this mysterious group wants.
Crossover - Mass Effect & Star Wars - Rated: M - English - Sci-Fi/Adventure - Chapters: 2 - Words: 8,813 - Reviews: 2 - Favs: 11 - Follows: 12 - Updated: 4/3 - Published: 3/13
N7: Prime by Leopardman reviews
John and Jane succeeded in stopping the Reapers. But what if they were sent to TFP universe?
Crossover - Mass Effect & Transformers/Beast Wars - Rated: M - English - Sci-Fi/Adventure - Chapters: 1 - Words: 7,838 - Reviews: 1 - Favs: 1 - Published: 4/2 - Shepard, Optimus Prime, Elita One
The Eternal Lord 40k - ME by HellFox83 reviews
A battle against the forces of Chaos strands a Necron lord in the galaxy of Mass Effect. With what's left of his dynasty under his banner, Veronakh Lord of Solvatakh intends to lead his people to glorious conquest. Can Commander Shepard stop the Collectors and curtail the ambitions of the Necrons?
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 26 - Words: 304,890 - Reviews: 107 - Favs: 354 - Follows: 473 - Updated: 3/31 - Published: 6/13/2020 - Necrons, Shepard
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: 44 - Words: 761,009 - Reviews: 1254 - Favs: 1,740 - Follows: 2,088 - Updated: 3/29 - Published: 6/8/2018 - SPARTAN-B312/Noble Six, Rookie
Sith Effect Episode I: First Contact by Metagray reviews
The ruins of Mars belonged not to the protheans but to humanity's ancestors, the Sith Empire. How will the Citadel react to a race that not only doesn't use mass effect technology, but is an anathema to their ideals. When the turians find the Sith, they face a war unlike any this galaxy has seen. The First Contact War has begun. Peace is a lie, there is only passion.
Crossover - Star Wars & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 13 - Words: 99,851 - Reviews: 438 - Favs: 1,120 - Follows: 1,480 - Updated: 3/29 - Published: 12/3/2022 - D. Anderson, Admiral Hackett, Rael'Zorah, OC
Cyber Effect, Book 1: The Butcher of Torfan by Travez reviews
In the year 2013, Humanity had discovered Cybernetics and became obsessed with them. By the time of 2148, Mass Effect Physics are discovered, and is happily married with Human Cybernetics. In 2183, Vincent "V" Shepard is made the first Human/Cyberpunk Spectre. With his Sandy and Keren as his backups, what could possibly go wrong? (Goddammit Bubsy) V Shepard, TaliShep.
Crossover - Mass Effect & Cyberpunk 2077 - Rated: M - English - Romance/Adventure - Chapters: 8 - Words: 69,356 - Reviews: 49 - Favs: 162 - Follows: 192 - Updated: 3/29 - Published: 10/1/2022 - [V, Shepard, Tali'Zorah]
Enduring the Flames of War by Masterdude21 reviews
A joint Asari-Turian operation salvaged a "package" from a derelict wreckage in the Terminus Systems, whereupon they release a force of war beyond their reckoning. Hoping to avoid another war, Commander Shepard recruits the "package" into her team. A simple act of kindness, unwittingly paving the way for a clash unlike the galaxy has ever seen. Fate directs the flames of war.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Horror - Chapters: 48 - Words: 711,443 - Reviews: 2487 - Favs: 3,805 - Follows: 4,631 - Updated: 3/28 - Published: 11/30/2015 - Master Chief/John-117, OC, Shepard
NieR: Ghosts of a bygone Era by The Potato Pug reviews
After the fall of the Tower, androids are finally united and ready to explore space in search of friendly species, what they found was a galactic community of aliens with deeply rooted hatred for AI. Will the galactic community make an exception for the Androids? or will they indulge in petty wars while another threat looms on the horizon? Citadel vs Reapers vs Humans.
Crossover - Mass Effect & Nier - Rated: T - English - Sci-Fi/Supernatural - Chapters: 5 - Words: 28,314 - Reviews: 29 - Favs: 121 - Follows: 183 - Updated: 3/28 - Published: 10/16/2022 - 2B, 9S, YoRHa Commander
The Sins of our Fathers by MarkerMagnum reviews
Unknown to the Citadel Council, the Human-Covenant war nears its vicious end. Miranda Keyes is seconds too slow. Delta Halo fires, leaving UNSC space as a lifeless snapshot in time. The Citadel must morn the loss of a civilization they never knew.
Crossover - Halo & Mass Effect - Rated: T - English - Drama/Sci-Fi - Chapters: 5 - Words: 40,012 - Reviews: 184 - Favs: 562 - Follows: 820 - Updated: 3/28 - Published: 2/11 - Cortana, Councilor Valern, Councilor Tevos, Councilor Sparatus
Héroe De Una Galaxia Distante by fitoxi reviews
'Retornador'; El Quirk que envio a Izuku a otro mundo, para luego regresarlo de vuelta, conservando todos los poderes que había ganado. Lamentablemente, nadie le creera si intenta revelar el origen de sus otros Quirks, 'Bioticos/Omniherramienta' y menos se creeran el cuento de que fue el más grande héroe de una galaxia. [Izuku OOC/Inicialmente, Vigilante/Harem ( Solo 2 parejas)]
Crossover - Mass Effect & My Hero Academia/僕のヒーローアカデミア - Rated: T - Spanish - Adventure/Romance - Chapters: 7 - Words: 57,584 - Reviews: 3 - Favs: 18 - Follows: 17 - Updated: 3/28 - Published: 3/3/2022 - [Liara T'Soni, Himiko Toga, Tali'Zorah, Izuku M.]
Feared Reverence by ayab reviews
376 years after the battle between heaven and earth. Two humans have achieved godhood. Using their power to guide humanity to the stars. How will the galaxy react to see a species so advanced yet so primitive? So powerful yet not wanting to use their power. They are what the citadel race aspires to be and hates because of their jealousy.
Crossover - Naruto & Mass Effect - Rated: T - English - Fantasy/Sci-Fi - Chapters: 3 - Words: 11,496 - Reviews: 29 - Favs: 141 - Follows: 199 - Updated: 3/25 - Published: 1/14
RWBY Effect 2: Rebirth by Owriush reviews
A year and a half has gone by, since the attack on the Citadel. Team RWBY and the crew of the Normandy suffer a tragedy. Ending in the loss of many lives. Awakened now a few years later. The girls of team RWBY, Elizabeth Shepard and their new allies must fight against a threat. One even more dangerous then the last. This is their Rebirth into a new world of wonders and insanity.
Crossover - Mass Effect & RWBY - Rated: T - English - Adventure/Romance - Chapters: 3 - Words: 65,997 - Reviews: 6 - Favs: 25 - Follows: 29 - Updated: 3/25 - Published: 8/10/2022
Control:Invation! by Maximo A. Cozzetti reviews
The Board is the regent entity of the Bureau, and possibly one of the most powerful to exist. But it is not the only one. There's always something worse out there. It will be up to shepard and the FBC director to stop them.
Crossover - Control & Mass Effect - Rated: K+ - English - Adventure/Supernatural - Chapters: 2 - Words: 4,434 - Reviews: 1 - Favs: 7 - Follows: 7 - Updated: 3/24 - Published: 1/30 - Jessie F., Shepard
Mass Effect: The Hammer of War by IX404 reviews
When fighting against Tyranids on a far flung Civilized World, Primaris Space Marine Marcus Tyrellus expects it to be like every other day in the Imperium of Man. Little does he know is that, he, and a few others, will soon be working to save another universe from destruction at the hands of an ancient foe.
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 16 - Words: 77,935 - Reviews: 117 - Favs: 272 - Follows: 346 - Updated: 3/24 - Published: 1/27/2022 - Imperial Guard, Space Marines, OC, Shepard - Complete
The Last Shinobi by derTraeumer reviews
The numbers of shinobi drastically decreased over the past generations till near extinction. People stopped using chakra as their source of power and focused on developing a modern society with the help of technology until they've achieved space-flight and the Reapers harvested their civilization... except one. Follow the ninja way of the last living shinobi Akane Uchiha.
Crossover - Naruto & Mass Effect - Rated: M - English - Tragedy/Mystery - Chapters: 37 - Words: 167,838 - Reviews: 51 - Favs: 163 - Follows: 213 - Updated: 3/24 - Published: 7/4/2019 - OC, Shepard
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