Halo and Mass Effect Crossovers
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The Fighting Spirit by smart grid reviews
Spartans never die, they say. When Jorge gave his life to save his home planet of Reach, he never imagined that he would survive. But now he finds himself neck deep in the troubles of another universe; he will do what he has been trained to do, what all Spartans do best: fight.
Rated: T - English - Adventure - Chapters: 36 - Words: 168,046 - Reviews: 617 - Favs: 771 - Follows: 1,002 - Updated: 13h - Published: 12/1/2011 - Jorge-052/Noble Five, Shepard (F)
New Galaxy, Same Problems by Sheogorath's Avatar reviews
After recovering a broken and barely-sane Cortana, Chief is sucked into the ME 'verse by a slipspace anomaly. How will he deal with the knowledge that his oly remaining friend is now illegal?
Rated: T - English - Sci-Fi/Drama - Chapters: 1 - Words: 1,001 - Reviews: 1 - Favs: 3 - Follows: 10 - Published: 17h - Master Chief/John-117, Cortana, Shepard (M)
Halo-Mass Effect: Codex by Azores reviews
Welcome to the Codex for the Crossover Book, Halo-Mass Effect: Altered Destiny. This Codex is to help get more in depth with the world of this Universe and explore more in depth certain events such as the Fall of Lorek and the Terra Nova Campaign, along with giving some key information on warships of the H-ME Universe. Enjoy.
Rated: K - English - Chapters: 5 - Words: 14,516 - Reviews: 10 - Favs: 16 - Follows: 26 - Updated: 10/1 - Published: 3/15 - J. Cutter, P. Cole, OC, Aria T'Loak
Mass Effect: Contact by FuzyDr4G0NZ reviews
In 2560, just years after the end of hostilities between the Earth based UNSC and the New Colonial Alliance, the Industrial colony of Falkland is slowly being turned into a Fortress as a defense against the perceived Colonial threat. But within months of his transfer to the colony, Lance Corporal David Campbell will find out first hand whether or not the fortress will hold.
Rated: T - English - Adventure/Sci-Fi - Chapters: 16 - Words: 49,383 - Reviews: 187 - Favs: 227 - Follows: 325 - Updated: 10/1 - Published: 5/8/2014 - OC
Halo-Mass Effect: Altered-Destiny by Azores reviews
In 2531 during the early years of the Great War, UNSC Spirit of Fire went missing and was declared lost with all hands. But what if the Spirit wasn't lost and adrift in space. What if it was sent to another Galaxy, before the Humans of this Galaxy hadn't discovered a certain set of ruins yet. How will Humanity's future change? How will the Galaxy be changed? Start 2100 AD. Book 1/3
Rated: T - English - Sci-Fi - Chapters: 9 - Words: 80,716 - Reviews: 251 - Favs: 467 - Follows: 629 - Updated: 10/1 - Published: 1/25 - J. Cutter, P. Cole, U. Wrex, Aria T'Loak
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)
Rated: T - English - Adventure/Friendship - Chapters: 17 - Words: 29,626 - Reviews: 102 - Favs: 123 - Follows: 174 - Updated: 9/28 - Published: 11/6/2014 - Master Chief/John-117, C. Halsey, OC, Shepard (F)
HaloEffect: Rise of The Republic by Fernix13 reviews
With Great War ended, humanity and covenant merge. New formed Republic of Orion Arm is trying to create a war-free civilization, but what will happen when empire of 3000 worlds will meet another galactic goverment? Rated T for blood, death etc.
Rated: T - English - Sci-Fi - Chapters: 5 - Words: 14,558 - Reviews: 49 - Favs: 165 - Follows: 215 - Updated: 9/19 - Published: 8/24 - Master Chief/John-117, T. Hood, Shepard (F), Shepard (M)
The Signal by NewWorldFiction reviews
A single world lies a mere 1000 light years from earth. It's a garden world, just like any other. Except for one thing: there's A signal. Mini One-shot. Possible to longer and more detailed rewrite.
Rated: T - English - Mystery/Tragedy - Chapters: 1 - Words: 892 - Reviews: 13 - Favs: 23 - Follows: 20 - Published: 9/12 - Liara T'Soni - Complete
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
Rated: T - English - Sci-Fi/Adventure - Chapters: 21 - Words: 213,954 - Reviews: 1814 - Favs: 2,006 - Follows: 2,519 - Updated: 9/6 - Published: 10/9/2013 - Master Chief/John-117, T. Lasky, Admiral Hackett, Shepard (M)
Unflinching Resolve by gwb99 reviews
The Human/Covenant was a long one, billions died on both sides yet Humanity always stood tall, fought back and kept going even when it seemed impossible. For the UNSC battlegroup Lima they will need to do this once again when they are thrown into another universe entirely and for one SPARTAN super soldier she'll need to overcome her hate and learn to trust those she despises.
Rated: T - English - Adventure/Sci-Fi - Chapters: 2 - Words: 10,215 - Reviews: 13 - Favs: 36 - Follows: 58 - Updated: 9/6 - Published: 9/4 - Kurt-051, OC, Admiral Hackett, OC
Halo Mass Effect: The New Dawn by OverLord3475 reviews
Humanity has joined forces with their former enemies to form the OSA, they have formed new alliances that have made them stronger, but what awaits them beyond the relay are they ready for a new chapter? inspired by Halo a new age and HaloMasssEffect: ruptured universe. this is a multicrossover (other franchises).
Rated: T - English - Sci-Fi - Chapters: 4 - Words: 27,015 - Reviews: 65 - Favs: 161 - Follows: 215 - Updated: 9/5 - Published: 7/1/2014 - Master Chief/John-117, Shepard (M)
The Halo Effect by Agentweapon-Proelium Tempus reviews
The UNSC dispatches a small task force to investigate an artefact with origins not of the Orion Arm. The Citadel Races, including the Systems Alliance, are in for an eye opener when two new players in galactic prowess are not only technologically superior but also not bound by the Element Zero and its constraints. Rated T for reasons. AU in both Halo and ME events.
Rated: T - English - Adventure/Humor - Chapters: 4 - Words: 19,388 - Reviews: 96 - Favs: 345 - Follows: 466 - Updated: 9/3 - Published: 8/6 - Master Chief/John-117, OC, Shepard (F)
The Cycle by Church -Caboose- Shepard reviews
Fighting off extinction Shepard must find the legacy left to humanity by the Forerunners. And find a way to defeat both the Reapers and the Prophet of Truth from gaining the power to destroy all sentient life in the Galaxy.
Rated: T - English - Sci-Fi/Adventure - Chapters: 29 - Words: 78,417 - Reviews: 115 - Favs: 34 - Follows: 46 - Updated: 9/2 - Published: 8/29/2012 - Arbiter, Prophet of Truth, Shepard (M), OC
Heart of the Storm by Cypherian reviews
Reach has fallen and Noble Six is all that remains on the planet. In a valiant last stand Six mysteriously finds himself in the world of another. How will he come to terms with it? What will he do? Can he overcome his loss and find peace at last? Six pairing is yet to be decided. Plan to span over whole mass effect series and possibly beyond. (Alternate Universe)
Rated: T - English - Adventure/Romance - Chapters: 14 - Words: 24,947 - Reviews: 73 - Favs: 156 - Follows: 228 - Updated: 8/30 - Published: 3/4 - SPARTAN-B312/Noble Six, Garrus V., Tali'Zorah, Shepard (M)
Shattered Universes by general MB reviews
Ch 12: Commander Shepard tries to sell his origin story to the people of Earth and Reach, while Halsey and Mordin's plan hits a snag. The Master Chief and his spartans are given a secret mission, as pieces start to fall into position. Events are occurring that will shape everything else that is to come.
Rated: T - English - Sci-Fi/Adventure - Chapters: 12 - Words: 86,373 - Reviews: 312 - Favs: 313 - Follows: 391 - Updated: 8/24 - Published: 1/3/2011 - [Tali'Zorah, Shepard (M)] Master Chief/John-117, J. Keyes
An Imperial Affliction by DONOVAN94 reviews
The war with the Reapers is over. Yet from the ashes a new threat emerges from the edge of the galaxy. Shepard is saved from the ruins of the Citadel but she now must fight a new and unknown enemy. Whilst a Sangheili warrior must face the truth of all he believes, and soon determine the fate of his species and the galaxy. [femshep/paragon/AU Halo/TalixSangheili/FemshepxGarrus]
Rated: T - English - Adventure/Romance - Chapters: 3 - Words: 25,258 - Reviews: 30 - Favs: 46 - Follows: 54 - Updated: 8/17 - Published: 1/10 - [OC, Tali'Zorah] [Shepard (F), Garrus V.]
The Sum is Greater than its Parts by Maersikai 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 when faced with a strange set of aliens and humans facing a galactic threat.
Rated: T - English - Sci-Fi - Chapters: 15 - Words: 145,053 - Reviews: 220 - Favs: 581 - Follows: 731 - Updated: 8/12 - Published: 3/2 - T. Hood, Cortana, Shepard (F)
The Joining of Worlds-Part 1: No, I think were just getting started by Jaye Wolf reviews
Cortana and The Master Chief float aimlessly through space. What happens when a foe turned friend tells Cortana about the world they left behind. A Human/Covenant unity called the Systems Alliance, the wonders of their technology, and the discovery of a Prothean Archive on Mars. This new ally also speaks of another group of races under the banner of the Citadel Council.
Rated: T - English - Adventure/Sci-Fi - Chapters: 3 - Words: 32,913 - Reviews: 80 - Favs: 214 - Follows: 304 - Updated: 8/7 - Published: 7/24 - Master Chief/John-117, Cortana, Shepard (F), Shepard (M)
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
Rated: T - English - Adventure/Sci-Fi - Chapters: 5 - Words: 23,668 - Reviews: 83 - Favs: 222 - Follows: 348 - Updated: 8/7 - Published: 11/26/2013 - Master Chief/John-117, Cortana, Shepard (F)
Accounts of the Flood conflicts by hunter 139 reviews
A series of one-shots depicting several franchises and their encounters with the Flood. I do not own Halo or any other franchises depicted in these stories.
Rated: T - English - Horror/Sci-Fi - Chapters: 9 - Words: 12,072 - Reviews: 33 - Favs: 20 - Follows: 28 - Updated: 8/6 - Published: 1/15
Shadow Contingency by Andrithir reviews
To safeguard the UEG and its secrets, Task Forces with plausible deniability must be created in order to identify and neutralise threats posed by foreign and domestic powers. -Shadow Contingency Abstract
Rated: T - English - Adventure/Sci-Fi - Chapters: 3 - Words: 30,858 - Reviews: 37 - Favs: 101 - Follows: 136 - Updated: 8/4 - Published: 7/15 - Master Chief/John-117, Shepard (F)
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 are dead. Hundreds of planets forever tainted by genocidal aliens. Old hatreds have arisen out of the ashes with the intent of achieving vengeance at whatever cost. In a future where there is no hope, how will humanity move forward?
Rated: T - English - Sci-Fi - Chapters: 3 - Words: 18,153 - Reviews: 38 - Favs: 48 - Follows: 61 - Updated: 8/3 - Published: 7/17 - Shepard (F)
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.
Rated: T - English - Sci-Fi - Chapters: 26 - Words: 54,614 - Reviews: 309 - Favs: 396 - Follows: 461 - Updated: 8/2 - Published: 9/22/2011
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!
Rated: T - English - Adventure/Sci-Fi - Chapters: 16 - Words: 428,050 - Reviews: 117 - Favs: 77 - Follows: 69 - Updated: 8/2 - Published: 6/21/2013 - Master Chief/John-117, Shepard (M)
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.
Rated: T - English - Chapters: 1 - Words: 14,054 - Reviews: 23 - Favs: 93 - Follows: 55 - Published: 7/29 - Complete
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