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Sudden Contact by A Very Thirsty Megalomaniac reviews
At the dawn of the Great War, first contact was made between the protoss, imperious firstborn of the xel'naga, and the turians, proud militarists. As the galaxy catches fire at this sudden conflict, unlikely alliances are formed while ancient directives are carried out by the oldest minds in the Milky Way. The Koprulu sector has opened, and the zerg are loose in Council space.
Crossover - StarCraft & Mass Effect - Rated: T - English - Sci-Fi/Humor - Chapters: 25 - Words: 137,477 - Reviews: 243 - Favs: 161 - Follows: 208 - Updated: 1h - Published: 2/9 - James R., Tassadar, Alexei S., Primarch Adrien Victus
The Mass Life Effect by nunouno1
With the Reaper threat imminent, Commander Shepard makes a desperate bargain with a mysterious man in order to save the entire universe. 20 years later Gordon Freeman awakes to find himself in a whole new world and universe that he had never expected, and now the question must be asked. What threat is the galaxy's true enemy, the Reapers or the mysterious Combine?
Crossover - Half-Life & Mass Effect - Rated: T - English - Drama/Horror - Chapters: 1 - Words: 3,877 - Published: 3h
Joker's Let's Play Series by Sutori-Artifex reviews
Join Jeff "Joker" Moreau, pilot of the Normandy SR-2 as he explores some of humanity's most ancient video games... for 2185, that is. (Note: Largely a Crackfic, as characters do not act as they usually do, but I'd consider it "canon" to my Masscreed universe. Rated T for Violence, Horror, and Language. Subject to Change based on "gameplay".)
Crossover - Mass Effect & Assassin's Creed - Rated: T - English - Humor/Horror - Chapters: 8 - Words: 21,905 - Reviews: 22 - Favs: 25 - Follows: 30 - Updated: 9h - Published: 3/7/2014 - Shepard (F), Joker, Shepard (M), OC
Dahlia Stark: The Horizon Saga by Vayelan
Season two begins with Dahlia and her new team leaving Omega for the human colony world Horizon. Although the rescue mission was a success, she's still far from feeling like a hero. Can Dahlia and company collect themselves and rise to the occasion, especially with dark things on the horizon?
Crossover - Marvel & Mass Effect - Rated: T - English - Chapters: 1 - Words: 1,530 - Favs: 2 - Follows: 4 - Published: 9h
Dementional Saviors by Time Emperor reviews
Look inside, it's all I have to say.
Crossover - Naruto & Mass Effect - Rated: T - English - Adventure/Romance - Chapters: 1 - Words: 118 - Reviews: 1 - Favs: 1 - Follows: 2 - Published: 9h - Naruto U., Jack
Falling Skies Mk II by Mediam Noctem reviews
In a future where Humanity is in a constant state of war within and without, heroes constantly arise… and fall. Tens of Billions dead. Hundreds of planets forever tainted by genocidal aliens. Old hatreds arise out of the ashes with the intent of achieving vengeance and at the cost of many. In a future where there is no hope, how will humanity move forward?
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 3 - Words: 18,119 - Reviews: 31 - Favs: 37 - Follows: 49 - Updated: 10h - Published: 7/17 - Shepard (F)
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 this galaxy forever. Post Halo 4, Pre ME3. AU
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 20 - Words: 205,177 - Reviews: 1726 - Favs: 1,862 - Follows: 2,335 - Updated: 15h - Published: 10/9/2013 - Master Chief/John-117, T. Lasky, Admiral Hackett, Shepard (M)
Mass Effect: Tales of Valor by Kamzil118 reviews
After a long game of fighting for the Victory Points, a commander of the Oberkommando West ends up into the Mass Effect universe with their 'logic' and manages to end up on a team with Commander Shepard. While they fight the Reapers to gain a challenge for once, the Reapers will be in one hell of a surprise to meet this faction.
Crossover - Mass Effect & Company of Heroes - Rated: T - English - Humor/Adventure - Chapters: 2 - Words: 4,871 - Reviews: 7 - Favs: 16 - Follows: 25 - Updated: 16h - Published: 7/29 - Shepard (F)
Robo Effect 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: 34 - Words: 115,675 - Reviews: 329 - Favs: 388 - Follows: 444 - Updated: 19h - Published: 4/14
Halo The Evolution Continues by UNSpaceCommand reviews
First time Crossover. Constructive Critic welcome. Enjoy and pls Review. Chapter 26 is up. A long lost ship is returning home but it seems fate have a decision to make a mess of things.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 26 - Words: 54,614 - Reviews: 305 - Favs: 378 - Follows: 432 - Updated: 8/2 - Published: 9/22/2011
Dahlia Stark - The Omega Saga by Vayelan reviews
Dahlia Stark survives an attack that kills her parents. She is rescued by the Migrant Fleet, where she spends the next twelve years of her life. The story begins when, at the age of 26, Dahlia is exiled from the Flotilla. Too afraid to return to Alliance space, she chooses to find a new path on Omega.
Crossover - Marvel & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 13 - Words: 21,962 - Reviews: 9 - Favs: 29 - Follows: 41 - Updated: 8/2 - Published: 3/9
Heroes UNITE! by So-Pro Warrior reviews
Commander Shepard and his team have gathered together the races of their Galaxy in an effort to defeat the Reapers. But is it enough? When the Commander and his team come across a strange woman they find out that if they are to truly defeat the Reapers once and for all. They will need all the help they can get. But not from their Universe. Multiverse Crossover!
Crossover - Mass Effect & Halo - Rated: T - English - Adventure/Sci-Fi - Chapters: 16 - Words: 428,050 - Reviews: 88 - Favs: 69 - Follows: 65 - Updated: 8/2 - Published: 6/21/2013 - Master Chief/John-117, Shepard (M)
Compromise isn't an option (Redone) by blackiechan13 reviews
Well here I am again, second attempt redone, Note: I am an amateur writer with dyslexia so there will be issue mainly of the Grammatical kind however hopefully I should acquire some Beta's soon so the Quality of chapters should go up, but yeah same premise as the last attempt just redone
Crossover - Warhammer & Mass Effect - Rated: T - English - Adventure/Romance - Chapters: 12 - Words: 32,654 - Reviews: 20 - Favs: 22 - Follows: 39 - Updated: 8/2 - Published: 9/12/2014
Evolution by DN7 reviews
In the aftermath of the Spear Crisis, 8th Armored will find that actions of the past will not be swept away so easily by others who discover them. *Sporadic Updates To Be Expected*
Crossover - Mass Effect & Section 8 - Rated: T - English - Chapters: 8 - Words: 40,300 - Reviews: 147 - Favs: 210 - Follows: 280 - Updated: 8/2 - Published: 11/10/2012 - Shepard (M)
One Future, Lightly Used by SeptimusMagistos reviews
Vault Dweller. Chosen One. Lone Wanderer. Courier. Heroes chosen by destiny to safeguard humanity in its times of need. It's now up to Shepard to carry on their legacy and protect the galaxy from a threat like nothing humans have seen before.
Crossover - Fallout & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 4 - Words: 30,051 - Reviews: 16 - Favs: 65 - Follows: 79 - Updated: 8/1 - Published: 1/2
The Halo Effect by Agentweapon-Proelium Tempus reviews
The discovery of a massive shield world and its contents put the UNSC into high alert. More alien artefacts are uncovered here, while vastly inferior to Forerunner, Covenant and Humanity technology, they still pose a threat since no First Contact scenario ever goes according to plan. With the help of the newly established AIS, will the UNSC be able to survive this new threat?
Crossover - Halo & Mass Effect - Rated: T - English - Humor/Adventure - Chapters: 9 - Words: 39,360 - Reviews: 133 - Favs: 258 - Follows: 386 - Updated: 8/1 - Published: 5/5 - Master Chief/John-117, OC, Shepard (F), Admiral Hackett
The Master Effect by Chris Myers reviews
A hole in the Time Vortex plunges the Doctor and the Master into a strange new universe, where the Time Lords are unknown, aliens travel through the galaxy via massive relays, and an ancient threat approaches.
Crossover - Doctor Who & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 6 - Words: 46,976 - Reviews: 8 - Favs: 23 - Follows: 34 - Updated: 7/31 - Published: 4/28
Gohan Effect by Lobo The Wolf reviews
When Gohan winds up on the Citadel, what will our favorite demi-saiyan get up to? T for now, no pairings, and non-canon DBZ characters/story line.
Crossover - Dragon Ball Z & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 5 - Words: 4,907 - Reviews: 19 - Favs: 26 - Follows: 40 - Updated: 7/31 - Published: 3/11 - Gohan, Shepard (F)
N7 SOLDIER by TheScreamingViking reviews
The Crucible dumps Shepard on Gaia. The first human Spectre becomes the first female SOLDIER as well as their first elite Sniper. Her uncanny ability to bring reason to unreasonable situations will alter the fate of the entire planet, but especially that of her three First Class friends. FF7 / ME3
Crossover - Final Fantasy VII & Mass Effect - Rated: T - English - Adventure/Friendship - Chapters: 19 - Words: 75,308 - Reviews: 171 - Favs: 198 - Follows: 233 - Updated: 7/31 - Published: 3/28
A Feeling of Importance by LebendenToten reviews
Well, after reading quite a bit of fanfiction I decided that maybe it was finally time for me to try and crank out one of my own. This is going to be a self insert story of sorts that starts in the Halo universe then eventually transitions to Mass Effect. This is my first Fanfic so be nice :P and constructive criticism/suggestions welcome! Rated T mainly for language.(changed to T)
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Friendship - Chapters: 15 - Words: 25,844 - Reviews: 87 - Favs: 87 - Follows: 139 - Updated: 7/30 - Published: 11/6/2014 - Master Chief/John-117, C. Halsey, OC, Shepard (F)
Advancing towards hope, and fuel by Zaravan reviews
"He was pretty sure this wasn't Rails and Metal..." When en route toward the next Annihilate match, something seems to go wrong, and our stubborn, defensive minded Commander must lead the Panzer Elite through fights in which they will be greatly outmatched. Utilizes content from the Europe at War mod.
Crossover - Mass Effect & Company of Heroes - Rated: T - English - Humor/Adventure - Chapters: 6 - Words: 5,278 - Reviews: 4 - Favs: 11 - Follows: 18 - Updated: 7/30 - Published: 7/28 - Shepard (M)
Blue and Red: Stories From Shanxi by Cyclone reviews
Interviews from the (in-universe) documentary series "Blue and Red: Stories From Shanxi." A Protoculture Effect story.
Crossover - Robotech/Macross & Mass Effect - Rated: T - English - Sci-Fi/Drama - Chapters: 13 - Words: 14,016 - Reviews: 27 - Favs: 68 - Follows: 59 - Updated: 7/30 - Published: 4/23/2013
The Spirit of Thessia by NewWorldFiction reviews
For several decades the Spirit of Fire has lumbered through the empty void to find not the UNSC, but something terrible: The destruction of the newly space faring civilization of the Asari by the hands of the Batarian Hegemony, a slaver species. Now, forced into a war that is impossible to win, the crew will face insurmountable odds against a enemy that cannot be beat. One-shot.
Crossover - Halo & Mass Effect - Rated: T - English - Chapters: 1 - Words: 14,054 - Reviews: 20 - Favs: 63 - Follows: 35 - Published: 7/29
Dust to Dust by hansolo18 reviews
Cerberus manages to bring Shepard back to life, but he's a body without a daemon. The aliens hardly notice, but the humans, the humans call him unnatural, a demon. They can't see the dust that collects on his skin like pond scum on still water or feel the pain of a missing soul. They call him demon and he finds no lies in their assessment.
Crossover - His Dark Materials & Mass Effect - Rated: T - English - Angst/Friendship - Chapters: 5 - Words: 6,865 - Reviews: 10 - Favs: 16 - Follows: 19 - Updated: 7/29 - Published: 8/22/2014 - Garrus V., Miranda L., Shepard (M)
Heart and Flesh by Nashk reviews
Shepard was a hero. She cheated death, destroyed a star system, and united the galaxy against reapers. It wasn't enough. Now, even her final rest is disturbed and she finds herself lost in a strange land. Can she find peace in this new world? Or will she just be dragged into another war? Only one thing is for certain, heroes never rest. Post ME3, early A:TLA.
Crossover - Avatar: Last Airbender & Mass Effect - Rated: T - English - Adventure/Supernatural - Chapters: 3 - Words: 4,738 - Reviews: 8 - Favs: 14 - Follows: 28 - Updated: 7/29 - Published: 4/24 - Aang, Shepard (F)
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