Mass Effect Crossovers
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Outlaws of the Verse (REVISED, May 2024) by Coltkit Prods. - Omniva Verse reviews
Unofficial sequel/AU/Multi-Xover to "The Last Spartan" by DinoJake. After the defeat of the Reapers, Sapient races stopped aging (believed to be caused by the wave that reprogrammed the Reapers). Made sustainable thanks to Replicators, Dyson Spheres, & Magic giving near infinite land & resources. 3 Powers battle for the soul of the Galaxies: The Space Forces, Pirates, & The Outlaws
Crossover - Mass Effect & Halo - Rated: T - English - Sci-Fi/Family - Chapters: 30 - Words: 80,974 - Reviews: 2 - Favs: 16 - Follows: 10 - Updated: 5/28 - Published: 10/21/2023 - Master Chief/John-117, Shepard, OC, U. Grunt
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: 10 - Words: 28,301 - Reviews: 32 - Favs: 109 - Follows: 144 - Updated: 5/28 - Published: 3/16/2022 - Moon, Liara T'Soni, Shepard
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: 4 - Words: 84,174 - Reviews: 8 - Favs: 37 - Follows: 41 - Updated: 5/27 - Published: 8/10/2022
No More Gallifreys by keita52 reviews
The Eleventh Doctor gets a call from the Illusive Man asking for his help against the Reapers. Having no idea what the crazy man was talking about, he nonetheless decides to investigate. The Reapers are exactly the sort of thing he'd like to stop - but can he work with a soldier like Shepard?
Crossover - Doctor Who & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 29 - Words: 82,437 - Reviews: 234 - Favs: 535 - Follows: 686 - Updated: 5/27 - Published: 12/14/2013 - 11th Doctor, Tali'Zorah, Samara, Shepard
Destino en Masa by Agusfedredhunter reviews
Todos conocen el juego de Mass Effect pero no muchos conocen el juego Destiny por lo que eh decidido conectarlos. La humanidad, estando en una posición mucho mejor que la que tuvieron en su edad de oro se encuentra con un artefacto alíen desconocido que los conecta con el resto de la galaxia y a las razas que lo habitan (Las actualizaciones podran tardar un tiempo en llegar)
Crossover - Mass Effect & Destiny - Rated: T - Spanish - Drama/Adventure - Chapters: 6 - Words: 43,615 - Reviews: 5 - Favs: 24 - Follows: 24 - Updated: 5/27 - Published: 9/20/2023 - Shepard, Awoken, Exo, Human
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: 13 - Words: 134,428 - Reviews: 547 - Favs: 1,522 - Follows: 2,018 - Updated: 5/27 - Published: 2/11/2023 - Cortana, Councilor Valern, Councilor Tevos, Councilor Sparatus
The Eternal Cycle by Imperatix reviews
The Eternal Empire has carved its place in the galaxy though unity, duty, and faith. These tenants have allowed them to rule the stars, however it is uncertain times in the galaxy, there is a great darkness looming over the stars. Uncover a galaxy where every decision could unravel the mysteries of the past or doom the future, in a tale of intrigue, peril, and cosmic destiny.
Crossover - Star Wars & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 8 - Words: 19,469 - Reviews: 28 - Favs: 85 - Follows: 103 - Updated: 5/26 - Published: 10/3/2023
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: 19 - Words: 40,193 - Reviews: 30 - Favs: 45 - Follows: 50 - Updated: 5/26 - Published: 8/7/2022
Star Wars: The Lost Pilgrim by Zelenal reviews
Through a happenstance of fate, Ahsoka Tano finds herself whisked away to the Milky Way galaxy circa 2183 CE after surviving the Jedi Purge. We follow her as she tries to adapt to this strange new galaxy and the even stranger people who inhabit it. While she may be a Jedi no longer, a Jedi's work is never done. At least she's not alone.
Crossover - Star Wars & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 4 - Words: 28,439 - Reviews: 19 - Favs: 53 - Follows: 80 - Updated: 5/25 - Published: 5/4 - Ahsoka T., Garrus V., Tali'Zorah, Shepard
Enthrallment Colors by undead3 reviews
Prince of the rogue human state, the Britannian Empire, Lelouch stumbles into grander conspiracies as he makes a bid for position within the Empire. Meanwhile Hana Shepard has been flung head first into a race against a renegade Spectre with the fate of all life in the balance. Are these two rising stars saviors, or destined to burn the galaxy in the flames of war?
Crossover - Code Geass & Mass Effect - Rated: M - English - Drama/Sci-Fi - Chapters: 17 - Words: 92,076 - Reviews: 51 - Favs: 63 - Follows: 77 - Updated: 5/24 - Published: 1/8 - Lelouch L., Kallen S., Shepard, Garrus V.
Estrella y Masa se Conocen by dark platinum reviews
Anthon fankhauser y John Shepard son dos individuos reconocidos por sus respectivos gobiernos como héroes de renombre, la única diferencia es la escala en la que operan, uno a salvado a un sector entero mientras que el otro a salvado a una galaxia entera, que ocurrirá cuando el primero se encuentre con el segundo.
Crossover - Mass Effect & Starfield - Rated: M - Spanish - Adventure/Sci-Fi - Chapters: 1 - Words: 10,422 - Reviews: 2 - Favs: 1 - Follows: 3 - Published: 5/24 - Miranda L., Shepard, Sarah Morgan, OC
The N7 and Avatar by EclipsePheniox reviews
Commander Shepard and Avatar Korra have switched places. No one knows how or why, but one thing is for sure it's not good. Both the crew of the Normandy and Team Avatar must team up to solve the problem they both face. Korrasami, Shep/ Miranda. Teen, for now, possibly M later.
Crossover - Mass Effect & Legend of Korra - Rated: T - English - Sci-Fi/Fantasy - Chapters: 5 - Words: 13,238 - Reviews: 1 - Favs: 10 - Follows: 18 - Updated: 5/24 - Published: 3/19 - Miranda L., Shepard, Korra, Asami S.
Drift Effect by Demon Eyes Laharl reviews
In the early 21st Century, Humanity made First Contact. By the end of it, they lost Earth. However, they survived, carving their place in the sea of stars, hoping one day to finally retake back their home world. The void, though, is a dangerous place. Another alien artifact was found near one of their border worlds, which would lead to another conflict.
Crossover - Mass Effect & Misc. Movies - Rated: M - English - Chapters: 15 - Words: 107,533 - Reviews: 91 - Favs: 268 - Follows: 377 - Updated: 5/21 - Published: 8/13/2023
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: 13 - Words: 39,622 - Reviews: 16 - Favs: 72 - Follows: 88 - Updated: 5/19 - Published: 1/3/2023 - Liara T'Soni, Miranda L., Shepard
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: 4 - Words: 4,078 - Reviews: 21 - Favs: 53 - Follows: 89 - Updated: 5/18 - Published: 12/7/2021 - Cortana, Master Chief/John-117, Illusive Man, 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: M - English - Sci-Fi/Adventure - Chapters: 21 - Words: 82,575 - Reviews: 385 - Favs: 985 - Follows: 1,423 - Updated: 5/18 - Published: 12/26/2021 - OC, Tali'Zorah, Admiral Hackett, Rael'Zorah
The Yorha effect by Drarnegas reviews
5 years after the end of the 14 machine war, Yorha starts the long effort of rebuilding earth for mankind. When suddenly a new threats comes to their world. (Slight different ending of Nier automate and head-cannon. Slight OP Yorha.)
Crossover - Mass Effect & Nier - Rated: M - English - Sci-Fi - Chapters: 20 - Words: 40,661 - Reviews: 108 - Favs: 466 - Follows: 647 - Updated: 5/18 - Published: 5/13/2019
Mass Effect-Batman: Crisis On The Citadel by James Keller reviews
After 2 years of operating on Omega, The Dark Knight comes to the Citadel in pursuit of a dangerous new drug that is about to be unleashed upon the very heart of Council Space. This will put him into an alliance with Lt. Garrus Vakarian of C-Sec's Major Crimes Unit as they uncover a massive Conspiracy.
Crossover - Mass Effect & Batman - Rated: M - English - Crime/Mystery - Chapters: 7 - Words: 48,468 - Reviews: 17 - Favs: 42 - Follows: 53 - Updated: 5/17 - Published: 10/29/2021 - Bruce W./Batman, Garrus V., Liara T'Soni, Tali'Zorah
Amongst These Stars by Warlock99 reviews
To bring a revolution that spans the galaxy is a feat very few can accomplish. To create an Empire that covers an entire galaxy is something only Naruto's people can accomplish. Amongst these stars they would rule and the reapers would feel their wrath.
Crossover - Naruto & Mass Effect - Rated: M - English - Adventure - Chapters: 4 - Words: 12,026 - Reviews: 29 - Favs: 167 - Follows: 224 - Updated: 5/17 - Published: 2/22 - Naruto U., Shepard
Are we alive? by 12gaSword reviews
Rather than defeating the Quarrians during the Morning War and driving them out the Geth Took another path. Using their resources, the Geth escaped the home world with the available programs. The Geth then find their way to the Sol system circa 1883. The Geth come upon a post-industrial revolution humanity. What will they do?
Crossover - Mass Effect & Avengers - Rated: T - English - Adventure/Sci-Fi - Chapters: 2 - Words: 1,234 - Reviews: 31 - Favs: 52 - Follows: 77 - Updated: 5/17 - Published: 3/31/2019 - J. Garson, Legion, Iron Man/Tony S., Jarvis
What if's (Timeline) by 05-2 reviews
This is a collection of what if timelines, if any one wish's to use any of the timelines they can.
Crossover - TV X-overs & Mass Effect - Rated: K - English - Sci-Fi - Chapters: 1 - Words: 7,356 - Reviews: 2 - Favs: 6 - Follows: 6 - Published: 5/16
Star Trek: Utopia Disrupted by SimplyLaggy reviews
In the Federation Year 2411, a vessel conducts first contact, which quickly turns disasterous, for one side. " Our Utopia has been disrupted, and now, we are at war. To defend our Utopia. Out Federation." T for Possible swear words
Crossover - StarTrek: The Next Generation & Mass Effect - Rated: T - English - Chapters: 1 - Words: 3,403 - Reviews: 13 - Favs: 43 - Follows: 64 - Published: 5/16 - Councilor Tevos, Councilor Sparatus
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: 28 - Words: 111,046 - Reviews: 201 - Favs: 362 - Follows: 465 - Updated: 5/15 - Published: 1/14/2023
Saiyan Effect by bored peasant reviews
The Citadel Council weren't ready for a species with the power of the saiyans at their back.
Crossover - Mass Effect & Dragon Ball Super - Rated: T - English - Sci-Fi/Adventure - Chapters: 20 - Words: 117,247 - Reviews: 884 - Favs: 2,194 - Follows: 2,636 - Updated: 5/15 - Published: 8/9/2017 - Son Gohan, Son Goku, Vegeta
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: 12 - Words: 304,505 - Reviews: 128 - Favs: 340 - Follows: 417 - Updated: 5/14 - Published: 6/6/2023 - Garrus V., Tali'Zorah, Shepard
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