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The Mantle helps all
by Master Builder reviews
What happens if the Quarians take drastic measures to ensure the continued survival of their species. The Mantle helps all in need and crush the ones who prevent it. Halo/Mass Effect/Transformers
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Fantasy - Chapters: 5 - Words: 14,315 - Reviews: 104 - Favs: 406 - Follows: 504 - Updated: 1/9 - Published: 5/2/2015 - [Master Chief/John-117, Kelly-087] [Shepard (M), Tali'Zorah]
by Cap'n Chryssalid reviews
A fun-loving asari mercenary finds herself a little in over her head when she ends up abducted by terrifying aliens from beyond the galactic frontier. These asari-like creatures call themselves 'humans.' They seem to be secretly nosing about on the borders of known space, acting through proxies, conducting covert operations, and they've got a deal for an enterprising asari...
Crossover - X-Com & Mass Effect - Rated: T - English - Humor/Sci-Fi - Chapters: 43 - Words: 387,570 - Reviews: 1321 - Favs: 2,921 - Follows: 3,419 - Updated: 1/2 - Published: 7/19/2014 - U. Wrex, Daro'Xen, Shepard (F), OC
From the Ashes
by erttheking reviews
Even after seeing their world burned, Humanity was able to stand up again, and push beyond their pre-war status and reach the heavens. But how will a hardened Humanity handle life among the stars? And how will others react to this aggressive newcomer?
Crossover - Fallout & Mass Effect - Rated: T - English - Sci-Fi/Romance - Chapters: 115 - Words: 876,548 - Reviews: 3316 - Favs: 2,230 - Follows: 2,069 - Updated: 12/30/2017 - Published: 5/17/2012
A Battle of Wills
by insinr8 reviews
Following the destruction of the Temple Ship, humanity rises to become stronger than ever, and is determined that they will never again allow any enemy to repeat what the Ethereals did. In Vigilo Confido.
Crossover - X-Com & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 57 - Words: 256,428 - Reviews: 727 - Favs: 953 - Follows: 1,166 - Updated: 12/25/2017 - Published: 7/4/2015
Jurassic Galaxy Chronicles: First Contact
by Nicogen reviews
After the events of Jurassic World a virus containing trace amounts of the Indominus Rex's DNA starts infecting Humans. Desperate for a cure they turn to the one man who can stop it, Dr. Henry Wu. Too Late is it discovered it was all apart of his plan. Humanity is gone! Replaced by a race of Dino Hybrids but little do they realize that he might have saved them from the darkness.
Crossover - Jurassic Park & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 17 - Words: 85,426 - Reviews: 396 - Favs: 765 - Follows: 876 - Updated: 12/19/2017 - Published: 7/27/2015 - Velociraptor, Indominus Rex, Saren A., OC
by Beastrider9 reviews
All life on Earth had been consumed by Blacklight. With no Biomass to feed on, Blacklight had to evolve, adapt, and grow. Now a collective Council of Aliens discovers the existence of such a life form. How do the aliens see a form of life that is viral, how they deal with it, what are the consequences to the galaxy of such a race existing at all.
Crossover - Mass Effect & Prototype - Rated: M - English - Sci-Fi - Chapters: 54 - Words: 263,443 - Reviews: 2330 - Favs: 3,055 - Follows: 3,441 - Updated: 12/18/2017 - Published: 8/8/2014
The Infinity Effect
by creamofwheat2311 reviews
After discovering a Precursor artifact, the UNSC Infinity and the Sangheili Shadow of Intent are transported to a universe unlike anything they have ever seen, and forced into a war against a foe they never could have imagined: the Reapers. Alliances are founded, friendships are formed, and decisions are made that will change both galaxies forever.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 34 - Words: 316,348 - Reviews: 2655 - Favs: 3,102 - Follows: 3,754 - Updated: 11/11/2017 - Published: 10/9/2013 - Master Chief/John-117, T. Lasky, Admiral Hackett, Shepard (M)
The Broken Bridge
by Aenthir reviews
Mass Effect/Atlantis/SG-1. The ME galaxy is under siege by the Reapers, and the asari have discovered that the ancient artifact they've kept hidden away for centuries is a gateway that predates the Protheans. Will the gateway lead to new allies or more enemies for the already beleaguered Citadel races? Femshep/Liara, Garrus/Tali, Daniel J./?, Carter, Sheppard/Weir, McKay and more!
Crossover - Stargate: Atlantis & Mass Effect - Rated: T - English - Adventure/Romance - Chapters: 10 - Words: 28,805 - Reviews: 128 - Favs: 262 - Follows: 421 - Updated: 10/20/2017 - Published: 2/21/2014 - Rodney M., Shepard (F), Liara T'Soni, OC
A Dead World
by Laluzi reviews
He had been captured; Alex Mercer knew that much was obvious. But if that was the case, why had his captors just left him there without security? How had he ended up in a bunker buried in some kind of giant desert? Where was everyone? And when the hell did bottlecaps become currency?
Crossover - Fallout & Prototype - Rated: T - English - Adventure/Suspense - Chapters: 34 - Words: 425,802 - Reviews: 1618 - Favs: 2,052 - Follows: 2,234 - Updated: 10/5/2017 - Published: 10/11/2012 - Courier, Arcade G., Alex M./Zeus
by Angry Madmoth reviews
Service in Federation had prepared her for most things the universe could throw at her. Being thrust into a war between a beleaguered humanity fighting a losing war against a fanatic conglomerate of genocidal aliens was not one of them.
Crossover - Halo & Elite - Rated: T - English - Sci-Fi - Chapters: 16 - Words: 59,803 - Reviews: 61 - Favs: 81 - Follows: 102 - Updated: 9/6/2017 - Published: 9/2/2016 - [Linda-058, OC]
Iron Hearts: The Shanxi Campaign
by Dr1ft3r0I reviews
Humanity found the Prothean ruins on Mars, but the data was corrupted. So, what happens when a race develops outside of the Reapers plans? And what of the machines of war that humanity has made?
Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 18 - Words: 58,460 - Reviews: 480 - Favs: 1,262 - Follows: 1,579 - Updated: 2/9/2017 - Published: 8/11/2013
Faith and Wit
by A Cynical Owl reviews
After a struggle to save an Imperial world from damnation, the remains of an Inquisitorial team and their temporary Eldar Allies are thrown into a universe the antithesis of their own.
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 23 - Words: 215,352 - Reviews: 334 - Favs: 618 - Follows: 829 - Updated: 2/5/2017 - Published: 2/9/2014
Mass Effect 3: The Wanderer
by Marcopolo135 reviews
Enter the Wanderer: A being who originates from before the Protheans. Journey through three cycles of life and death in the fight against the Reapers.
Mass Effect - Rated: T - English - Adventure - Chapters: 62 - Words: 185,377 - Reviews: 168 - Favs: 356 - Follows: 399 - Updated: 1/13/2017 - Published: 8/25/2010 - Shepard (F), OC
Mass Effect: The New Journey
by Arashi the Solar Phoenix reviews
During a Joint Deployment, the UNSC Infinity and Her Sangheili allies are suddenly thrown into a new Galaxy, and end up near Charon before the Systems Alliance discovers the Charon Relay. Alliances are forged and how will the galaxy react to an aggressive humanity that not only doesn't use Mass Effect technology, but will not let anyone stand in their way of expansion? AU PreME1
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 19 - Words: 190,515 - Reviews: 1264 - Favs: 2,027 - Follows: 2,499 - Updated: 12/31/2016 - Published: 1/26/2014
by Star Sage reviews
The Robotech wars are over. The survivors of Humanity and the Zentraedi are now alone in the universe, and so, come together, becoming something new, becoming Terrans. Now this race will find itself thrust into the galactic scene, as the Citadel Races and those beyond test these young upstarts, and in the shadows, old things begin to move.
Crossover - Robotech/Macross & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 59 - Words: 215,414 - Reviews: 518 - Favs: 670 - Follows: 723 - Updated: 12/25/2016 - Published: 4/14/2015
by The Great Lord Dovahkiin reviews
What does a Tier 1 civilization qualify as when forcefully moved from another universe to this one? "Well... I guess you could call us inter dimensionally displaced persons, maybe?"
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 1 - Words: 743 - Reviews: 14 - Favs: 66 - Follows: 96 - Published: 12/8/2016
The Next Great Journey
by alanvaladez reviews
After the destruction of Requiem and an attack against Earth, both the UNSC and Covenant Separatist form the Systems Alliance. Then a discovery in the Deca-5 system changes everything for all sides. Cold War like conflict, lots of ONI , AU for Mass Effect and a council that actually thinks before it acts. Awaiting its sequel.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Drama - Chapters: 19 - Words: 150,316 - Reviews: 191 - Favs: 422 - Follows: 455 - Updated: 10/30/2016 - Published: 9/8/2014 - Master Chief/John-117, OC, Saren A., OC - Complete
by Mr. Cloak reviews
For thousands of years, we have slept. Waiting for projects to come to fruition, waiting for the loneliness to end. Waiting for something interesting to happen. The Reapers are going to have a very, very bad day. A Planetary Annihilation and Mass Effect Crossover. Have fun!
Crossover - Total Annihilation & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 7 - Words: 33,334 - Reviews: 132 - Favs: 536 - Follows: 688 - Updated: 8/3/2016 - Published: 1/1/2016 - Liara T'Soni, Tali'Zorah, EDI, OC
by Akallas von Aerok reviews
They saw opportunity through the wormhole. It was where they were going to strike rich. They were ready for anything on the other side ... but they didn't expect anything to follow them through the wormhole. The wormhole destabilized and exploded. Now stranded in a unfamiliar space, the Outlanders have no idea what was going to happen to them.
Crossover - Star Wars & EVE Online - Rated: M - English - Adventure/Sci-Fi - Chapters: 6 - Words: 22,726 - Reviews: 35 - Favs: 133 - Follows: 167 - Updated: 5/30/2016 - Published: 8/22/2014
Crucible - Super Weapon or Trap?
by BadLoki reviews
What if a certain someone that had been monitoring the Mass Effect reality had finally had enough? Mostly Mass Effect with a dash of Trek.
Crossover - StarTrek: The Next Generation & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 21 - Words: 90,576 - Reviews: 249 - Favs: 419 - Follows: 536 - Updated: 5/4/2016 - Published: 2/4/2016 - Q, Shepard (M), D. Anderson, Illusive Man
by Shujin1 reviews
She woke up on Ilos as a series of 1s and 0s. An Artificial Intelligence. Mass Effect is the last place a brand new AI wants to be and this one used to be a person. Who knows this should all be a game. Now on Book Two: Rebirth.
Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 24 - Words: 159,243 - Reviews: 487 - Favs: 1,229 - Follows: 1,473 - Updated: 4/30/2016 - Published: 7/4/2013 - Saren A., Shepard (M), Benezia
by Solaris242 reviews
Humanity never developed FTL. The Prothean archives contained no technology, no Element Zero, just a warning. Isolated from the rest of the galaxy for two thousand years, restricted to their only system, how will humanity have changed when they first meet the Turians? AU, alternate history of humanity and First Contact.
Mass Effect - Rated: T - English - Sci-Fi - Chapters: 18 - Words: 40,604 - Reviews: 1977 - Favs: 5,818 - Follows: 6,819 - Updated: 3/1/2016 - Published: 5/7/2013
The Heavens Shall Tremble
by Full-Paragon reviews
Sequel to And the Meek Shall Inherit the Galaxy. On hiatus while author recovers from medical emergency.
Mass Effect - Rated: T - English - Sci-Fi/Horror - Chapters: 23 - Words: 95,248 - Reviews: 925 - Favs: 1,274 - Follows: 1,486 - Updated: 9/21/2015 - Published: 10/25/2013 - Garrus V., Liara T'Soni, Tali'Zorah, Shepard (M)
Mass Effect: A journey through the Eons
by Casje reviews
When a strange device capable of remarkable feats is found in the Martian ruins, the course of humanity's history changes forever. The resulting leaps and bounds in technology leave humanity well prepared to deal with the rest of the galaxy. AU
Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 9 - Words: 41,396 - Reviews: 459 - Favs: 1,388 - Follows: 1,729 - Updated: 8/26/2015 - Published: 11/17/2014
by joestej reviews
Millions of years ago, the Earth was ruled not by man, but by the fearsome creatures known as DINOSAURS! Now Earth's only hope for the future may lay in the secrets of its ancient past. Let the galaxy tremble, for our world's most ancient masters have finally returned. The Council is going to have a fit...
Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 7 - Words: 46,316 - Reviews: 209 - Favs: 676 - Follows: 794 - Updated: 7/31/2015 - Published: 2/20/2015
Things the Normandy crew are not allowed to do as written by Council
by Witchweather reviews
The Normandy crew has gotten bored now that the wars all over. The council has to set down some rules. Primarch Victus gets stuck in the middle But he was never a by the book kinda guy anyway. (Totally isn't a Victus fangirl. NOPE.) Hope you like. I might try to post more later. Disclaimer - I do not own mass effect.
Mass Effect - Rated: T - English - Humor - Chapters: 5 - Words: 1,783 - Reviews: 17 - Favs: 62 - Follows: 53 - Updated: 7/3/2015 - Published: 3/25/2015 - Primarch Adrien Victus, Garrus V.
All Or Nothing
by Darridus reviews
Mr. House claims that in ten years, he'll have colonists set up on the moon. But what about twenty years later? Thirty? The sky is the limit when Mr. House and his top lieutenant discover alien ruins on Mars, and make a discovery that will change the galaxy forever.
Crossover - Fallout & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 11 - Words: 158,660 - Reviews: 402 - Favs: 824 - Follows: 968 - Updated: 6/6/2015 - Published: 8/6/2013 - Courier
Vanguard: In at the Deep End
by USSExplorer reviews
The Vanguard finds itself flung into another galaxy that faces the threat of being overrun by a seemingly unstoppable force. With a massively damaged ship, and little time; can the Vanguard make a difference in determining the fate of a galaxy?
Crossover - StarTrek: Other & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 48 - Words: 229,314 - Reviews: 320 - Favs: 301 - Follows: 403 - Updated: 5/31/2015 - Published: 4/26/2012 - Shepard (F)
by Andrithir reviews
There are stories about them, myths and legends of once majestic species overseeing the galaxy and exploring into the space that lay beyond. There were stories about them, tales of faded past. Humanity's missing link. (Rewrite Chapters 1 to 3 now posted) COMPLETED. Rewrites are on hiatus.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 67 - Words: 328,897 - Reviews: 1618 - Favs: 1,317 - Follows: 1,242 - Updated: 2/20/2015 - Published: 10/8/2011 - Master Chief/John-117, Shepard (F) - Complete
Out to the Black
by Levhitor reviews
Star Trek was just a show. Eve Online was just a game. And the Machine Cult was just a joke... Or so I thought. In the body of a Capsuleer, with the Rust Ghosts along for the ride and the Federation in front of me, I curse Q. [You can find out more on SB/SV Links under my profile]
Crossover - StarTrek: The Next Generation & EVE Online - Rated: T - English - Adventure/Sci-Fi - Chapters: 7 - Words: 13,824 - Reviews: 12 - Favs: 104 - Follows: 129 - Updated: 11/12/2014 - Published: 10/29/2014
Voyage into the Unknown
by HarryNamarr reviews
When doing his job leaves him stranded, Harry Namarr finds himself lost in a new galaxy with his damaged ship. Will he find his way back home? More importantly, can he survive in this new galaxy alone?
Crossover - Mass Effect & EVE Online - Rated: M - English - Sci-Fi/Adventure - Chapters: 10 - Words: 30,575 - Reviews: 34 - Favs: 93 - Follows: 135 - Updated: 11/6/2014 - Published: 3/19/2013
by Grushdeva reviews
What if a wormhole made a connection that led somewhere other then W-space?
Crossover - Mass Effect & EVE Online - Rated: T - English - Sci-Fi/Adventure - Chapters: 9 - Words: 52,671 - Reviews: 95 - Favs: 246 - Follows: 335 - Updated: 3/15/2014 - Published: 5/22/2012 - Shepard (M)
Mass Effect: The First War
by ProfFartBurger reviews
The Prothean Ruins weren't. They contained little more than mentionings of an Alien Society; as a result, humanity develops on a completely different path than what was intended, and when first contact is made not with the Turians, but a desperate, destitute race viewed as beggars and thieves, how will this dying race change Humanity? And how will Humanity change the Galaxy? *A/U!*
Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 22 - Words: 200,906 - Reviews: 1772 - Favs: 3,195 - Follows: 2,351 - Updated: 1/12/2014 - Published: 1/26/2013 - OC - Complete
Mass Effect New Origins V2
by erttheking reviews
On the dawn of the 27th century, the UNSC discovers a Mass Relay, and unlock its power. What follows not only includes making contact with new species and making new friends, but making new enemies as well, and the entire galaxy will shake.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Romance - Chapters: 109 - Words: 442,687 - Reviews: 2405 - Favs: 1,372 - Follows: 928 - Updated: 6/9/2012 - Published: 10/5/2010 - Shepard (F) - Complete
Mass Effect: A new past
by Bombsquad reviews
A different history to Mass Effect in which Human technology develops along different lines than anything the Citadel knows...an Alternative History of Mass Effect.
Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 15 - Words: 137,294 - Reviews: 663 - Favs: 1,480 - Follows: 818 - Updated: 5/18/2011 - Published: 12/11/2010 - Complete
Sort: Category . Published . Updated . Title . Words . Chapters . Reviews . Status .
The Sum is Greater than its Parts reviews
Having long since combined forces, a fleet of the Humans and Covenants finest are torn from the universe they know to be thrown in to a strange and desolate reality. They will strive to uphold the Mantle against the Mass Effect's most Ancient Enemy. Will they break the cycle?
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 19 - Words: 181,564 - Reviews: 333 - Favs: 957 - Follows: 1,186 - Updated: 11/26/2016 - Published: 3/2/2015 - Cortana, Shepard (F)
What Once Was Lost reviews
The Earth never bore her children into the stars before they cast themselves down. The Council had no clue of the Reaper threat until they attacked. Now on the run, the Council races must flee from the ever-expanding wave of Reapers. In a last-ditch effort to get someone out of reach of the enemy, they send a Vagrant fleet far from their once civilized space to start new.
Mass Effect - Rated: T - English - Sci-Fi - Chapters: 4 - Words: 16,251 - Reviews: 28 - Favs: 96 - Follows: 136 - Updated: 10/23/2015 - Published: 5/10/2015 - Liara T'Soni, Tali'Zorah