Mass Effect Crossovers
Filters
1.7K | Page 1 2 3 4 11 .. Last Next »

A Ship Named Enterprise by Doctor poo and the TURDIS reviews
While investigating an anomaly near the edge of the Alpha Quadrant, the crew of the Enterprise-D get flung into a conflict greater than they could possibly imagine...
Crossover - StarTrek: The Next Generation & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 6 - Words: 12,554 - Reviews: 26 - Favs: 60 - Follows: 87 - Updated: 2h - Published: 4/3
Psionic Effect by Leona-do reviews
Psionics. It was more than just telepathy and telekinesis. Something more. A rare gift that very few intelligence species possessed, humanity being one of them. When the Citadel was invaded by aliens of unknown origin, they brought Psionics to the Citadel Space. Psionics had altered humanity, and so too would the Citadel Species. This is Psionic Effect.
Crossover - X-Com & Mass Effect - Rated: T - English - Adventure/Drama - Chapters: 2 - Words: 9,057 - Reviews: 8 - Favs: 55 - Follows: 58 - Updated: 2h - Published: 9/2
The Chosen Few by ZOMAN388 reviews
"We are the Chosen, the eternal will of creation. We will create the greatest weapon within existence, and with it, reshape reality. Your attempts to resist us are futile, for we have already won in the future. Give up your ways, and bow before the Chosen."
Crossover - Mass Effect & Destiny - Rated: T - English - Sci-Fi/Adventure - Chapters: 8 - Words: 48,662 - Reviews: 19 - Favs: 27 - Follows: 45 - Updated: 15h - Published: 4/19 - Shepard (F), Garrus V., Liara T'Soni
Cold Open by Convergence-Eternal reviews
Forty years after the Reaper war, Batarian soldiers make first contact with an unknown entity. And from there things go wrong. Horribly horribly wrong.
Crossover - Sailor Moon & Mass Effect - Rated: T - English - Chapters: 2 - Words: 2,840 - Reviews: 1 - Favs: 1 - Updated: 9/19 - Published: 9/15
Between Two Worlds by Commander Mander reviews
Two universe's problems can only be solved with the help of one woman. With an alcoholic, war battered Shepard, a former Cerberus Operative, a Witcher, a Sorceress, and the Lady of Time and Space, the situation could get a little hectic.
Crossover - Mass Effect & Witcher - Rated: T - English - Adventure/Humor - Chapters: 6 - Words: 12,323 - Reviews: 5 - Favs: 9 - Follows: 15 - Updated: 9/19 - Published: 5/28 - Shepard (F), Miranda L., Geralt of Rivia, Ciri
Parasites Abound by Faithless wanderer reviews
The primordial became part of the flood but it did not simply become part of the gravemind no instead it watched over the war and when the halos rings fired it took over and set events in motion that would forever change the fate of another galaxy
Crossover - Halo & Mass Effect - Rated: K - English - Sci-Fi/Adventure - Chapters: 5 - Words: 16,176 - Reviews: 7 - Favs: 17 - Follows: 23 - Updated: 9/19 - Published: 8/23
Mass Effect Prototype by saperasdisawesome
Summary Scott Ryder was never the hero, his sister Sara was the hero of Helius and he was nothing. He eventually tries to capture a wanted criminal named Alex Mercer but when he tries to capture him, he fails and gets turned into a copy of him. He must then outrun the initiative while being hunted like a criminal. Alex and Scott pov takes place 2 years after mass effect Andromeda
Crossover - Mass Effect & Prototype - Rated: T - English - Chapters: 1 - Words: 352 - Favs: 1 - Follows: 1 - Published: 9/19
A Hunter Out of Place by Shadow Amongst Shadows reviews
"I'm just a simple man, trying to make my way in the universe." -Jango Fett. When a hunt goes wrong, Jango is sent to an unknown galaxy. With no friends or allies, can Jango find his way back home? Author's Note: The story will start off teen but may progress into a mature rating.
Crossover - Star Wars & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 8 - Words: 43,722 - Reviews: 68 - Favs: 179 - Follows: 251 - Updated: 9/19 - Published: 2/7/2016 - Jango Fett, Shepard (F), Tali'Zorah, Saren A.
Whispers of Darkness by Darthkvzn reviews
Billions have died, but their sacrifices have brought the known races of the galaxy freedom. Their destiny is theirs to command, and peace, albeit a somber one, reigns unchallenged. The cosmos is full of constants, however, and death is the most prominent of them all. *Set after ME3 and LotV, spoilers*
Crossover - StarCraft & Mass Effect - Rated: T - English - Chapters: 20 - Words: 45,384 - Reviews: 162 - Favs: 197 - Follows: 259 - Updated: 9/19 - Published: 12/7/2015
Shepard's Sunset by BrowncoatBrony11 reviews
Twenty years after the Reaper War, Shepard finds someone that will change her and Garrus' life forever. Four months after the Anon-A-Miss incident Sunset as finally started to trust her friends again. But she still feels like something is missing.
Crossover - My Little Pony & Mass Effect - Rated: T - English - Adventure/Family - Chapters: 6 - Words: 16,263 - Reviews: 8 - Favs: 15 - Follows: 15 - Updated: 9/18 - Published: 6/20/2016 - Sunset Shimmer, Shepard (F)
Gravity by DONOVAN94 reviews
Elaine Cousland has done her duty, the Archdemon is dead, and so is she. Until she awakens on a strange world in a strange time, and realises that evil still lives. The Collectors are here to destroy humanity, and as a Warden it is her responsibility to protect the innocent. She will join the strange ship that sails the stars, the Normandy, and walk into hell. Just like old times.
Crossover - Mass Effect & Dragon Age - Rated: T - English - Adventure/Romance - Chapters: 7 - Words: 53,359 - Reviews: 49 - Favs: 51 - Follows: 95 - Updated: 9/18 - Published: 8/15 - [Garrus V., Cousland] Tali'Zorah, Shepard (M)
Saiyan Effect by bored peasant reviews
The Citadel Council weren't ready for a species the with power of the saiyans at their back. AU. I know it's a bad summary. If you think of a better one before I do then PM me.
Crossover - Mass Effect & Dragon Ball Super - Rated: T - English - Sci-Fi/Adventure - Chapters: 4 - Words: 18,346 - Reviews: 46 - Favs: 143 - Follows: 187 - Updated: 9/18 - Published: 8/9 - Son Gohan, Son Goku, Vegeta
The Indominus effect (Mass effect) by RedLightningD608 reviews
It has been over 100 years since humanity discovered Dark Matter and harnessed its volatile power to devastate the very foundation of the galaxy and its various species. Now a century after the Dark Matter war, what secrets lay buried in the savage minds of the beast that use to be humanity and how can a handful of aliens unlock whats been forgotten? (rewrite now posted)
Crossover - Jurassic Park & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 1 - Words: 6,528 - Reviews: 20 - Favs: 41 - Follows: 41 - Updated: 9/17 - Published: 8/14 - Indominus Rex, Shepard (F), Garrus V., Nihlus K.
New Opportunities by hunter 139 reviews
Commander Shepard gains some new temporary allies aboard the Normandy. A side story to Omega Chronicles. Contains Spitfire fluff.
Crossover - Young Justice & Mass Effect - Rated: T - English - Romance/Adventure - Chapters: 7 - Words: 19,585 - Reviews: 8 - Favs: 7 - Follows: 5 - Updated: 9/17 - Published: 12/18/2016 - [Artemis C./Artemis, Wally W./Kid Flash] Shepard (M), Garrus V.
Kekkaishi Effect by shadowrunner22 reviews
Yoshimori is hating his family business of being a kekkaishi, but finds himself brought into a new world. He finds himself become the adoptive brother of Tomas Shepherd. A new legend will be born. Pairings Shep. and Tali, Yoshi and Toki Updated chap. 1
Crossover - Mass Effect & Kekkaishi - Rated: T - English - Sci-Fi/Adventure - Chapters: 5 - Words: 28,700 - Reviews: 12 - Favs: 22 - Follows: 28 - Updated: 9/16 - Published: 4/30/2013 - [Tokine, Yoshimori] [Tali'Zorah, Shepard (M)]
Stories Untold by BrickSheep reviews
The Shepard will always protect her flock of sheep even if it was a foreign one she had yet grown familiar with. AU
Crossover - Mass Effect & Overwatch - Rated: T - English - Adventure/Friendship - Chapters: 14 - Words: 35,006 - Reviews: 44 - Favs: 128 - Follows: 216 - Updated: 9/16 - Published: 9/20/2016 - Shepard (F)
The Warhammer Effect: Collateral Misfortunes by BKGeno reviews
In the future, where there is only war, sometimes desperate measures must be taken to secure the survival of a few. But when that measure leads to a place far different from what they know, can the Eldar adapt to a new reality, where there is more than only war? Also, what is a monkey? Picture by timokujansuu on Deviantart
Crossover - Warhammer & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 2 - Words: 6,460 - Reviews: 5 - Favs: 12 - Follows: 31 - Updated: 9/15 - Published: 9/9 - Eldar, Shepard (F)
Throwing Coal on the Fire by unusualRenegade reviews
UPDATED: Blind-walking is usually a bad idea, especially when you end up in the middle of empty space. Seems like I'm not the only one though; something seems to be drawing planeswalkers here, and there's nothing sinister about that at all, right?
Crossover - Magic: The Gathering & Mass Effect - Rated: T - English - Sci-Fi/Fantasy - Chapters: 2 - Words: 2,771 - Reviews: 23 - Favs: 51 - Follows: 67 - Updated: 9/15 - Published: 1/18/2011
Mass Effect: Shadow of the Sith by SomeGuyOverHere reviews
Commander Shepard has fought slavers, Geth, Collectors, and Reapers. But he has never fought a war. Now a mysterious faction called the Sith Empire makes itself known. Led by Emperor Revan and the Emperor's Wrath, it attacks and declares war on the Citadel species. Will Shepard be able to save his galaxy from this new threat and still be ready for the coming of the Reapers?
Crossover - Star Wars & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 9 - Words: 119,565 - Reviews: 77 - Favs: 123 - Follows: 158 - Updated: 9/15 - Published: 5/30 - Revan, Sith W., Shepard (M)
The Spartan Crew Member by Daisy Rhine reviews
Commander Shepard and his crew find the other half of the ship that MC is on. When they find him they have no idea what they should expect but an chemically suped up human was not one of them. I don't own Halo or Mass Effect 343industries and BioWare do.
Crossover - Halo & Mass Effect - Rated: T - English - Friendship/Adventure - Chapters: 6 - Words: 17,047 - Reviews: 39 - Favs: 54 - Follows: 85 - Updated: 9/15 - Published: 8/14 - Master Chief/John-117, Garrus V., Tali'Zorah, Shepard (M)
Beyond The Veil by NaniteSystems reviews
Harry's unspeakably bored, and bored Unspeakables make bad decisions. Like jumping through the Veil of Death, when they're barely even certain it's safe. Now where it goes, on the other hand… That's still a mystery. But hey! Adventure, right?...Right? - Harry steps through the Veil, and into Mass Effect. The Reapers won't know what hit them. MODHarry.
Crossover - Harry Potter & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 18 - Words: 167,548 - Reviews: 712 - Favs: 2,622 - Follows: 3,584 - Updated: 9/14 - Published: 9/2/2016 - [Harry P., Shepard (F)]
A New Watch by Kingly Crimson reviews
A year after the ending of the Second Omnic Crisis, thing's on earth have changed for the better with Overwatch back in the picture. However with the Creation of the new Slipstreamer Rocket being Tested in the Sol System by Winston, The People of earth find out they aren't alone. And they sure as hell aren't safe either. Time to call Overwatch.
Crossover - Mass Effect & Overwatch - Rated: T - English - Sci-Fi/Adventure - Chapters: 5 - Words: 47,162 - Reviews: 121 - Favs: 369 - Follows: 508 - Updated: 9/14 - Published: 5/1/2016
Effects of a Titan by greeneman42 reviews
A small salvage ship comes across an interesting find while searching. Set before Halo 4 and before ME 2
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 24 - Words: 161,473 - Reviews: 660 - Favs: 1,098 - Follows: 1,477 - Updated: 9/13 - Published: 11/26/2013 - Master Chief/John-117, Cortana, Shepard (F)
The Doctor effect by deadman walking2.0
The Doctor crash's the interdimensional barrier between his universe and the commander Shepard's, hilarity ensures as he tries to find out what mess he's got himself into this time.
Crossover - Doctor Who & Mass Effect - Rated: K+ - English - Adventure/Sci-Fi - Chapters: 2 - Words: 5,524 - Favs: 2 - Follows: 4 - Updated: 9/12 - Published: 8/14
Stargate A New Age by kaln7 reviews
Shepard defeated the Collectors, but now he must face a universe different from his own, but his team won't be the only team to help him get through this uncertain future.
Crossover - Stargate: SG-1 & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 4 - Words: 23,162 - Reviews: 35 - Favs: 74 - Follows: 118 - Updated: 9/12 - Published: 4/6
1.7K | Page 1 2 3 4 11 .. Last Next »