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Mass Wars Episode 1 by Fantasymaker76 reviews
It is an age of tensions in the galaxy, two galactic governments compete with each other over who has control of the galaxy, the Citadel Council and the Republic of Allied Species. With the discovery of an ancient Prothean Beacon on the Republic planet Eden Prime, both governments see it as a chance to build bridges between them and send a joint contrusted ship to investigate.
Crossover - Star Wars & Mass Effect - Rated: M - English - Drama/Sci-Fi - Chapters: 25 - Words: 149,314 - Reviews: 288 - Favs: 151 - Follows: 179 - Updated: 8h - Published: 3/3/2019
Half Life: Entanglement by ThePilotArchangel reviews
Ayita Shephard, Lambda Resistance; Cato'Zorah nar Rayya, hired Quarian of the Council Funded Relay 314 Expedition. Both dissatisfied with their lot in this universe; one under the heel of a Inter-Universal Empire, and the other under the boot of an Apathetic Galactic Council. Together they will change the Galaxy. (Image not Owned, Co-Written with IantheMechanic, First Contact AU)
Crossover - Half-Life & Mass Effect - Rated: T - English - Sci-Fi/Family - Chapters: 31 - Words: 263,211 - Reviews: 24 - Favs: 61 - Follows: 94 - Updated: 18h - Published: 6/30/2020 - [Shepard, OC] Garrus V., Tali'Zorah
Where Ghosts and Spectres play by spart1339 reviews
Spectres are feared throughout the galaxy as the right hand of the Council. But, there is another force that is feared more than the Spectres, even by Spectre operatives. They are known as Ghosts, elite covert operatives who are humanity's unseen protectors. Ghost Team Wolf is called in to assist Shepard.
Crossover - Mass Effect & Ghost Recon series - Rated: M - English - Sci-Fi/Adventure - Chapters: 5 - Words: 24,683 - Reviews: 19 - Favs: 138 - Follows: 198 - Updated: 19h - Published: 5/29/2017 - J. Garson, OC
Great Effort and A Hand by DemonKnight312 reviews
Alyssa wanted closure after returning to the land of the living, and that led to her bring back an ancient warrior trapped by devious would be god. His world a husk of what it was, the Dragonborn joins the Commander on her quest to save the Universe.
Crossover - Elder Scroll series & Mass Effect - Rated: M - English - Fantasy/Sci-Fi - Chapters: 1 - Words: 5,150 - Reviews: 1 - Favs: 7 - Follows: 14 - Published: 20h - Dragonborn/Dovahkiin, Shepard
Once a Rookie, Always a Rookie by Twisted Fate MK 2 reviews
(Credit to Adrasos on Archive and his story, Prepare to Drop, for the idea.) On the way down to New Mombasa, Rookie falls into the Slipspace Rupture and ends up crashing down on Menae, high above Palaven, while Shepard tries to find and rescue the new Primarch. From there, the war itself will shift and the fighting persists, but who knows what an ODST will add to the mix.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure - Chapters: 58 - Words: 279,130 - Reviews: 516 - Favs: 954 - Follows: 1,266 - Updated: 22h - Published: 9/27/2018 - Rookie, Shepard, Javik
Faction Death Battle by Konradoziom reviews
Death Battle, but between factions. Factions may not necessarily come from the HALO or MassEffect universes. You can ask fort factions you want to fight with each other in the comments. I found something like that on YouTube and decided to do it myself, on fanfiction, although on YouTube it was called otherwise, 'Faction Compare', I think.
Crossover - Halo & Mass Effect - Rated: K+ - English - Fantasy/Sci-Fi - Chapters: 2 - Words: 3,805 - Reviews: 9 - Favs: 5 - Follows: 5 - Updated: 5/23 - Published: 4/19
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: 22 - Words: 77,858 - Reviews: 33 - Favs: 150 - Follows: 160 - Updated: 5/23 - Published: 8/2/2019
Last Bastion by hunter 139 reviews
A battle with Darth Vader in a Rakata Temple propels Ahsoka Tano into an entirely new and unfamiliar galaxy. Star Wars and Mass Effect: Andromeda crossover. Primarily Legends Canon.
Crossover - Star Wars & Mass Effect - Rated: T - English - Adventure/Mystery - Chapters: 39 - Words: 175,763 - Reviews: 93 - Favs: 173 - Follows: 240 - Updated: 5/22 - Published: 8/1/2020 - Ahsoka T., Scott R., Jaal aD., SAM
Mass Effect: Monstrum Immortalem by RabidRabbids reviews
It was supposed to be a simple shakedown run. Instead, she fights geth on an idyllic colony after centuries of isolation, finds and destroys a Prothean beacon (accidentally) and encounters two new alien species which are more advanced than anything previously encountered. As it turns out, a talking Raccoon is the least surprising thing she'd seen all day.
Crossover - Mass Effect & Guardians of the Galaxy - Rated: M - English - Sci-Fi/Adventure - Chapters: 16 - Words: 54,290 - Reviews: 9 - Favs: 36 - Follows: 33 - Updated: 5/21 - Published: 2/9
The Reapers Summer by Helljumper206 reviews
For as long as she could remember, Summer had been fighting. Not remembering her past before her service to humanity and the galaxy at large. With the threat of the Reapers about to be dealt with once in for all, images of a time before appear. A/N: Commander Shepard is Summer Rose.
Crossover - Mass Effect & RWBY - Rated: T - English - Family/Adventure - Chapters: 18 - Words: 54,888 - Reviews: 162 - Favs: 373 - Follows: 520 - Updated: 5/21 - Published: 8/18/2019 - Shepard, Ruby R., Yang X.L., Summer R.
Kiss of the Raptor by David Falkayn reviews
A Romulan warbird finds itself in the ME Universe as Subcommander V'lana Avesti discovers that both universes face a common menace. Story begins at beginning of ME2 and will continue through to ME3. Events will diverge from canon-they have to in a story like this. I'm rating this story M because V'lana has a potty mouth and adult situations. Better safe than sorry.
Crossover - Mass Effect & Star Trek Online - Rated: M - English - Drama/Adventure - Chapters: 32 - Words: 247,325 - Reviews: 127 - Favs: 167 - Follows: 216 - Updated: 5/21 - Published: 5/31/2013 - Kaidan A., Miranda L.
Mass Effect: The Path to Enlightenment by James118 reviews
Two years after the destruction of the Reapers, the people of the Milky Way face a new threat, the one as powerful and worse as the Reapers. Can Commander Shepard and his new allies defeat this new enemy or will the galaxy fall under the power of the Ori? OC x Treeya Nuwani and Male Shepard x Liara T'Soni.
Crossover - Stargate: SG-1 & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 1 - Words: 6,197 - Reviews: 1 - Favs: 4 - Follows: 4 - Published: 5/21 - [Shepard, Liara T'Soni] OC
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: 6 - Words: 23,763 - Reviews: 58 - Favs: 472 - Follows: 553 - Updated: 5/21 - Published: 5/3 - U. Wrex, Skitter
Psi-Effect (The Bad End Series) by JohnAnonymous reviews
A fanfic based on Cap'n Chrysalid's Psi-Effect story but in the Bad End timeline. This fic consists of diary entries by Liara T'soni, each one a thousand words long. Enjoy
Crossover - X-Com & Mass Effect - Rated: K - English - Horror - Chapters: 2 - Words: 2,277 - Reviews: 4 - Favs: 8 - Follows: 18 - Updated: 5/21 - Published: 5/9
Mass Effect: Broken Cycles by Shadowmane2001 reviews
When a Cycle repeats itself enough time. Aberrations appear. Commander Shepard is one such Aberration. But there is another, from an Ancient Race planted so many millions of years ago. A race that did not fall to the Trap of the Reapers. And now the last survivor of their experiment is on a headlong collision with Shepard. A being they called GUYVER. F/Shep 85% Paragon 15% renegade
Crossover - Guyver & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 5 - Words: 24,976 - Reviews: 12 - Favs: 57 - Follows: 72 - Updated: 5/21 - Published: 9/9/2020 - OC, D. Anderson, Illusive Man, Shepard
The Milky Way's Solo by MuffledCornet 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: 9 - Words: 13,491 - Reviews: 43 - Favs: 163 - Follows: 251 - Updated: 5/20 - Published: 1/20 - OC, V, Johnny Silverhand
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: 6 - Words: 11,910 - Reviews: 29 - Favs: 95 - Follows: 125 - Updated: 5/19 - Published: 4/20 - [Garrus V., Shepard] [Whitley S., Tali'Zorah]
Clone Effect by Twistedstitcher27 reviews
Captain Rex is sent on shore leave after Umbara. While at 79's, he meets a woman from a planet he's never heard of, who is facing ghosts of her own while trying to find her place in a Republic at war. Rated M for language and future chapters.
Crossover - Star Wars: The Clone Wars & Mass Effect - Rated: M - English - Romance/Hurt/Comfort - Chapters: 18 - Words: 81,360 - Reviews: 36 - Favs: 102 - Follows: 159 - Updated: 5/18 - Published: 1/27 - [Captain Rex, Shepard] Anakin S.
Only the Faithful by Tilthanial reviews
They held the line when the hordes came. They held the line when the gods came. They held the line when the Worldbreaker came. Now they hold the line against a threat they have never imagined. And they will hold the line. For they are Cadians, and they are faithful.
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 10 - Words: 170,327 - Reviews: 376 - Favs: 757 - Follows: 1,052 - Updated: 5/18 - Published: 4/15/2017
A FAMILY AGAINST THE GALAXY by Captain Saint 1st reviews
Cyrus Saint plucks a family's souls from near death, gives them a class card each and a Star Wars ship to command then kicks them into the Mass Effect universe no fs given, but they end up in Council space and are pursued, their only hope is reaching the untouched Mass Relay 314. Humanity will need them dearly, as will the rest of the Galaxy in the future.[Arthurian legend themeAU]
Crossover - Fate/stay night & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 14 - Words: 71,498 - Reviews: 59 - Favs: 170 - Follows: 207 - Updated: 5/18 - Published: 4/10/2020
Catalog of War by hunter 139 reviews
A collection of one shots about events, including battles, conflicts and skrimishes, that occur in the shared multiverse of my stories. I do not own any of the franchises that appear in this series. Multicrossover.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 24 - Words: 49,716 - Reviews: 21 - Favs: 32 - Follows: 29 - Updated: 5/15 - Published: 4/21/2015
I'm Nobody by free man writer reviews
He didn't have anything when he was born. just a name and number. But overtime, what he had grew. He, with his friends began to understand that there was more to their existence then just their name and number. They will prove that they were meant to be real. To exist. To become something more than just a Nobody. Co-written and created with Jebest4781. Fem Shepard. Now on Ao3.
Crossover - Kingdom Hearts & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 30 - Words: 532,686 - Reviews: 379 - Favs: 302 - Follows: 321 - Updated: 5/15 - Published: 9/13/2020 - Axel, Roxas, Xion, Shepard
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: 6 - Words: 44,062 - Reviews: 66 - Favs: 248 - Follows: 321 - Updated: 5/15 - Published: 5/13/2020 - [Lelouch L., C.C.]
XCOM: Enemy Expanded by DarthHollow reviews
We defeated the Elders. We took their technology and made it our own to advance into the stars. After so long we surprisingly made allies while unsurprisingly made enemies. Now we find our place and stand firm in this galaxy. Pray to those that believe us weak. For we will not.
Crossover - X-Com & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 7 - Words: 33,269 - Reviews: 42 - Favs: 158 - Follows: 254 - Updated: 5/15 - Published: 8/6/2020
Altered Destiny by CrazyBastid reviews
What if there was another humanity before the age of Mass Effect? What if the Traveller was real and cleansed all traces of the previous humanity from the system before disappearing? And what if there was one Guardian who slept for tens of thousands of years, all throughout human history as we know it, only to awake on Eden Prime? This is the story of the return of the Guardians
Crossover - Mass Effect & Destiny - Rated: M - English - Sci-Fi/Adventure - Chapters: 9 - Words: 76,429 - Reviews: 55 - Favs: 195 - Follows: 260 - Updated: 5/15 - Published: 10/7/2020
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