Mass Effect Crossovers
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The Dream Effect by DarkPhoenixLady reviews
A rewrite of the original dream effect. Set hundreds of years after the Deep Dream series. Humanity has been slowly expanding across space, and has just encountered the citadel races. After a rocky start, the two groups start to co-exist. Then someone attacks Eden Prime and tries to remove the prothean beacon.
Crossover - Harry Potter & Mass Effect - Rated: T - English - Sci-Fi/Fantasy - Chapters: 22 - Words: 108,891 - Reviews: 7 - Favs: 31 - Follows: 43 - Updated: 6/4 - Published: 5/9 - Liara T'Soni, Tali'Zorah, Shepard
The Exiles:A New Power by Johnnieboy11 reviews
The beginning of the Battle For Earth signaled the start of the final, bloodiest campaign of the Human-Covenant War. Hastily, a plan is put into motion and an Ark Fleet, composed of a dozen Phoenix-class vessels and their escorts, makes the jump out of system. Either interference, or malfunction, causes their arrival to a new Galaxy, where new threats lurk just around the corner.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 7 - Words: 25,155 - Reviews: 147 - Favs: 580 - Follows: 879 - Updated: 6/3 - Published: 12/26/2021 - OC, Tali'Zorah, Admiral Hackett, Rael'Zorah
Maelstrom Effect Book 2: Shadows of Crimson by godospartan the Kitsune reviews
After Soverign's defeat, the sibling Commanders left to clean up the mess it left behind. But one of them was struck down by an unknown force. The next 2 years they go in search of the ones responsible, unknowing that a secret group is bringing their sibling back to life to fight the Reapers again. How will they react when they meet again? NaruxTali, Shakarian, Mature content later
Crossover - Naruto & Mass Effect - Rated: M - English - Sci-Fi/Hurt/Comfort - Chapters: 13 - Words: 155,959 - Reviews: 74 - Favs: 330 - Follows: 375 - Updated: 6/2 - Published: 12/25/2019 - Naruto U., J. Garson, Garrus V., Tali'Zorah
A New Effect by KingKaper reviews
The Galaxy is a dark and mysterious place, even for those who think they have it all figured out. Humans were sure that Pokemon were the strongest beings in this dimension, however Shepard and all living beings will be reeducated, there are dark places even Giratina fears. Cross-posted on AO3
Crossover - Pokémon & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 7 - Words: 22,353 - Reviews: 19 - Favs: 84 - Follows: 115 - Updated: 6/2 - Published: 3/16/2022 - Moon, Liara T'Soni, Shepard
A Warden Amongst Starry Skies by SophimusPrime reviews
What if, by chance, our esteemed Commander and her crew just so happened to unearth a strange, seemingly mundane mirror upon one of their many expeditions throughout the systems one day? Sure, at first it would have seemed like nothing. Just sat in the Shuttle Deck gathering dust for a while.. until a certain Hero just so happened to come tumbling out of it.
Crossover - Mass Effect & Dragon Age - Rated: M - English - Romance/Humor - Chapters: 5 - Words: 49,902 - Reviews: 2 - Favs: 14 - Follows: 18 - Updated: 6/2 - Published: 4/22 - Garrus V., The Warden
False Masks: Spectre by Mandalorian Runescaper reviews
A Mass Effect/SWTOR crossover. The sequel to False Masks, picking up two years after the first instalment. In a galaxy weakened by the horror that was the Reaper War, a new threat will arise. Our heroes won't be able to stop it alone this time. Human OC/quarian OC pairing and Male Shepard/Kasumi Goto pairing. Feedback is much appreciated! Original title: False Masks: Shadows
Crossover - Star Wars & Mass Effect - Rated: M - English - Sci-Fi/Romance - Chapters: 37 - Words: 203,292 - Reviews: 82 - Favs: 94 - Follows: 133 - Updated: 6/1 - Published: 9/30/2018 - [OC, OC] [Shepard, Kasumi G.]
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: 74 - Words: 298,852 - Reviews: 775 - Favs: 759 - Follows: 1,043 - Updated: 6/1 - Published: 5/5/2019 - Legion, Pyrrha N., Penny P., God of Darkness
Stellar Effect Codex by Brandon Storm reviews
A Codex exploring the History and Lore of the Stellar Effect Universe
Crossover - Mass Effect & Stellaris - Rated: T - English - Sci-Fi - Chapters: 14 - Words: 31,288 - Reviews: 22 - Favs: 36 - Follows: 32 - Updated: 5/31 - Published: 8/7/2022
The Stranger of Horizon by Soulless Reader reviews
A wanderer finds himself displaced in space and time to a colony under attack by vile aliens. Accompanied by a few survivors, he attempts to save who he can and strike back against the invaders. But why would he of all people end up there?
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 5 - Words: 38,609 - Reviews: 19 - Favs: 57 - Follows: 68 - Updated: 5/29 - Published: 5/25 - Complete
Descent of the Angels by IReadToLive99 reviews
From a war-torn galaxy to another at the edge of extinction. The Blood Angels, through mysterious providence, are here now. Absent of the guidance of the Primarch and the Emperor, duty and devotion will lead them on a path to safeguard humanity from the darkness that lurks amongst the stars.
Crossover - Warhammer & Mass Effect - Rated: K+ - English - Sci-Fi - Chapters: 5 - Words: 9,313 - Reviews: 27 - Favs: 90 - Follows: 134 - Updated: 5/28 - Published: 5/25 - Space Marines, Shepard
Not in one's own plate by Sicht reviews
Time has become an elusive concept, leaving V uncertain if she has been trapped for a year or even longer. Amidst lingering anxiety and worries, she clings to the belief that her sacrifices were not in vain, desperately seeking a glimmer of hope for a meaningful outcome to her plight. Since hope dies last.
Crossover - Mass Effect & Cyberpunk 2077 - Rated: M - English - Adventure/Sci-Fi - Chapters: 8 - Words: 39,810 - Reviews: 13 - Favs: 63 - Follows: 119 - Updated: 5/28 - Published: 9/8/2022 - V, OC
Code Lyoko: Eezo by Cdc100 reviews
This story takes place in the future…thirty years after the discovery of the mass relays. Five friends fight an evil virus named XANA, but a much greater threat is coming…
Crossover - Mass Effect & Code Lyoko - Rated: M - English - Sci-Fi/Drama - Chapters: 2 - Words: 23,605 - Reviews: 7 - Favs: 3 - Follows: 11 - Updated: 5/27 - Published: 6/15/2014 - [Aelita S., Jeremie B.] OC, Ulrich S.
The Milky Way's Solo by Likeableheart reviews
V finds himself away from Night City and dealing with a whole new environment where there's aliens, politics, and whole new planets. How will the former Corporate rat turned netrunning solo react to this? Will the galaxy notice this new individual, or will he fade as a Mr. Nobody?
Crossover - Mass Effect & Cyberpunk 2077 - Rated: M - English - Sci-Fi/Adventure - Chapters: 12 - Words: 20,904 - Reviews: 60 - Favs: 301 - Follows: 436 - Updated: 5/27 - Published: 1/20/2021 - OC, V, Johnny Silverhand
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: 26 - Words: 220,268 - Reviews: 308 - Favs: 668 - Follows: 771 - Updated: 5/25 - Published: 7/10/2020 - Clark K./Kal-El/Superman, Miranda L.
Things the United Nations is Banned from doing (The List!) by vmoneywashere reviews
A new galactic power, the Solar United Nations, has taken a mantle alongside the Citadel Council. Two powerful forces acting in concert to form a stable, galactic community- Where did these space creatures come from? What do you mean the Humans Summoned spirits- No! Don't Adopt the Quarians! (One-shot, but can expand later).
Crossover - Mass Effect & Stellaris - Rated: T - English - Humor/Sci-Fi - Chapters: 1 - Words: 1,956 - Reviews: 6 - Favs: 49 - Follows: 53 - Published: 5/24 - Councilor Tevos, OC
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: 49 - Words: 731,868 - Reviews: 2531 - Favs: 3,865 - Follows: 4,680 - Updated: 5/24 - Published: 11/30/2015 - Master Chief/John-117, OC, Shepard
Cursed by Hookshot25 reviews
Clayton Carmine has only known hate and carnage for so many years. But once he survives the war he hoped to die in, things get strange. When people need help he isn’t one to shy away, and while helping Baird he gets sent to a place in dire need of a man like him. A man that can’t be claimed by death as easily as his kin.
Crossover - Gears of War & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 4 - Words: 32,310 - Reviews: 4 - Favs: 34 - Follows: 48 - Updated: 5/24 - Published: 4/10 - C. Carmine, Samantha B./Sam, Shepard, Tali'Zorah
Into Darkness by Beltran reviews
The Normandy has been tasked with investigating a strange distress signal yet what they found was not something any were prepared for.
Crossover - Mass Effect & Dead Space - Rated: M - English - Horror/Sci-Fi - Chapters: 2 - Words: 6,846 - Reviews: 7 - Favs: 18 - Follows: 30 - Updated: 5/24 - Published: 5/22 - Tali'Zorah
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: 3 - Words: 13,306 - Reviews: 2 - Favs: 17 - Follows: 20 - Updated: 5/23 - Published: 3/13
Whitley Shepard: The Commander's Brother by Hadrian Kallig reviews
Whitley Schnee couldn't take it anymore. The soul crushing loneliness was too much for the boy, and he ended up taking his life. However, in a twist of fate, an amnesiac Whitley ends up being found by Hannah Shepard. Years later, as a fresh faced engineering graduate, Whitley Shepard decides to join his sister's mission to hunt down Saren.
Crossover - Mass Effect & RWBY - Rated: M - English - Romance/Family - Chapters: 18 - Words: 40,560 - Reviews: 130 - Favs: 346 - Follows: 400 - Updated: 5/21 - Published: 4/20/2021 - [Garrus V., Shepard] [Whitley S., Tali'Zorah]
Daily War With Shipgirls by Starco101 reviews
Story inspired by “Daily War With Monster Girls”! In the midst of the cruel Human-Covenant War, a new type of intelligence was created. Artificial constructs armed with the power of warships compressed into the size of human girls called “ship girls”. Can humanity’s greatest heroes keep their sanity with these unlikely companions? Halo/Mass Effect/Monster Musume crossover!
Crossover - Mass Effect & Halo - Rated: M - English - Adventure/Mystery - Chapters: 1 - Words: 6,206 - Reviews: 5 - Favs: 26 - Follows: 35 - Published: 5/21 - Master Chief/John-117, OC, Cortana, Shepard
The Dark Effect by VLFBERHTwolf reviews
At the risk of Eternal boredom Dante Sparda and V join The crew of the Normandy and venture into the darkest corners of the galaxy. On a mission to stop the Collectors, Shepard comes face-to-face with God-like beings with powers beyond imagination and Dante faces old enemies of his past, Thereby propelling all of them into an epic game of life and death.
Crossover - Devil May Cry & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 6 - Words: 16,213 - Reviews: 4 - Favs: 28 - Follows: 41 - Updated: 5/20 - Published: 5/13/2022 - Dante(DmC), Vergil(DmC), V, Shepard
I'll Always Find You by Scififan33 reviews
Sora T'Soni just wanted to keep her family safe, to put her skills to use for her people, so she joined the military. Riku Yamada was running from a past he wished he could forget, grateful to those who saved him, so he joined the Alliance military. The Saren and Sovereign attacked and both their lives changed forever. Something drew them together but how could it work?
Crossover - Kingdom Hearts & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 17 - Words: 73,337 - Reviews: 11 - Favs: 25 - Follows: 23 - Updated: 5/20 - Published: 6/30/2022 - [Riku, Sora] [Liara T'Soni, Shepard]
The Good Shepherd: Season One by Dingo32 reviews
In her time Carrie white was the first human biotic, but she was driven to insanity, slaughter and apparent suicide by the cruelty of those around her. In another age her gift of natural biotics holds the key to a better life for those of her ilk, but that may not be all she has to offer the galaxy. Undergoing rewrite.
Crossover - Mass Effect & Carrie - Rated: M - English - Sci-Fi/Supernatural - Chapters: 2 - Words: 17,212 - Reviews: 26 - Favs: 73 - Follows: 110 - Updated: 5/17 - Published: 5/6/2016
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: 9 - Words: 31,411 - Reviews: 11 - Favs: 24 - Follows: 46 - Updated: 5/16 - Published: 1/30 - OC, Cailan T.
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