Halo and Mass Effect Crossovers
Filters
339 | Page 1 2 3 4 11 .. Last Next »

Codex of the Multiverse by hunter 139 reviews
This is a document that details the history and composition of the factions in the multiverse. Multicrossover between several different franchises.
Rated: T - English - Sci-Fi - Chapters: 4 - Words: 6,463 - Reviews: 3 - Favs: 4 - Follows: 3 - Updated: 7h - Published: 2/17
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: 4 - Words: 11,933 - Reviews: 9 - Favs: 11 - Follows: 20 - Updated: 5/21 - Published: 3/15 - J. Cutter, P. Cole, OC, 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: 13 - Words: 21,653 - Reviews: 61 - Favs: 47 - Follows: 80 - Updated: 5/20 - Published: 11/6/2014 - Master Chief/John-117, C. Halsey, OC, Shepard (F)
Better by CJ-T-Bone reviews
Sometimes a hero deserves more than he gets. Rated T because I'm paranoid. Oneshot.
Rated: T - English - Tragedy/Romance - Chapters: 1 - Words: 2,088 - Reviews: 6 - Favs: 10 - Follows: 6 - Published: 5/20 - [Cortana, Master Chief/John-117] Shepard (F) - Complete
Heroes of the Stars by Kamzil118 reviews
The Arbiter and an ODST, Farseer Taldeer and Logan of the Ghost squad, and Blackburn of the 1st Recon Marines. All these people find themselves in the Mass Effect Universe with an unexpected way that brings them together. Commander Shepard will need all their help to fight the Reapers. For those who have seen this story before I have rewritten it to fit the Mass Effect 2 setting.
Rated: T - English - Sci-Fi/Adventure - Chapters: 19 - Words: 59,149 - Reviews: 67 - Favs: 64 - Follows: 81 - Updated: 5/19 - Published: 7/21/2014 - Arbiter, Rookie, Shepard (F), Tali'Zorah
Of Our Time by Korten reviews
On the day of the 100th anniversary of the conclusion of the Great War, a lone ONI agent is sent to retrieve an artifact and bring it back to the ONIRF, Trevelyan. However what lies inside is something unexpected, ancient and alien. Join ONI Agent Garret Elphick along with his mysterious companion as they solve the greatest mystery of his time. Where did the Master Chief go?
Rated: T - English - Sci-Fi/Adventure - Chapters: 6 - Words: 34,566 - Reviews: 24 - Favs: 37 - Follows: 64 - Updated: 5/18 - Published: 4/6 - Master Chief/John-117, OC, OC
Where Titans Tread by JLake4 reviews
"What importance do the machinations of mortals hold? They scheme and plot, but see their actions lead only to death. Whose death is not important, the grave shall still be filled." [Sequel to Divergent Pasts]
Rated: T - English - Sci-Fi/Suspense - Chapters: 15 - Words: 62,365 - Reviews: 48 - Favs: 35 - Follows: 39 - Updated: 5/18 - Published: 2/13 - Arbiter, Garrus V., Shepard (M)
Dawnhammer by Ace Warbringer reviews
For the crew of the Matriarchs Light, the day was going to hell. For the Dawnhammers refit voyage, new things are about to occur. For when the Matriarchs Light opens a relay, chased by a Reaper. One ship will stand and face a new world. (Now continued!)
Rated: T - English - Sci-Fi/Fantasy - Chapters: 2 - Words: 9,180 - Reviews: 29 - Favs: 82 - Follows: 108 - Updated: 5/18 - Published: 3/29
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: 18 - Words: 186,282 - Reviews: 1620 - Favs: 1,770 - Follows: 2,212 - Updated: 5/17 - Published: 10/9/2013 - Master Chief/John-117, T. Lasky, Admiral Hackett, Shepard (M)
Halo : New Destiny by Offensive bias ai reviews
What if instead of the Covenant the UNSC meet the Mass Effect races?
Rated: T - English - Sci-Fi/Humor - Chapters: 1 - Words: 351 - Reviews: 2 - Favs: 7 - Follows: 15 - Published: 5/17
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.
Rated: T - English - Sci-Fi - Chapters: 6 - Words: 8,301 - Reviews: 4 - Favs: 3 - Follows: 3 - Updated: 5/17 - Published: 4/21
The Halo Effect Guide by Agentweapon-Proelium Tempus reviews
This is a guide to the Halo Effect universe. This will be constantly updated as the story progresses and new tech is introduced.
Rated: T - English - Chapters: 2 - Words: 2,400 - Reviews: 1 - Favs: 4 - Follows: 7 - Updated: 5/16 - Published: 5/12
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?
Rated: T - English - Humor/Adventure - Chapters: 2 - Words: 6,637 - Reviews: 17 - Favs: 75 - Follows: 116 - Updated: 5/16 - Published: 5/5 - Master Chief/John-117, OC, Shepard (F), Admiral Hackett
Alternate Past: Uncertain Future Mk II: Archives by Follower38 reviews
A collection of data entries from the APUFMKII universe. The second iteration. Am willing to discuss and listen to any suggestions.
Rated: T - English - Chapters: 6 - Words: 23,364 - Reviews: 8 - Favs: 15 - Follows: 11 - Updated: 5/16 - Published: 8/24/2014
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: 7 - Words: 60,101 - Reviews: 173 - Favs: 359 - Follows: 479 - Updated: 5/16 - Published: 1/25 - J. Cutter, P. Cole, U. Wrex, Aria T'Loak
Heart of the Storm by Aleixo 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.
Rated: T - English - Adventure/Romance - Chapters: 11 - Words: 17,501 - Reviews: 45 - Favs: 71 - Follows: 116 - Updated: 5/16 - Published: 3/4 - SPARTAN-B312/Noble Six, Garrus V., Tali'Zorah, Shepard (M)
The codex of everything and anything that crosses my mind by Virginian1776 reviews
The codex of my future story, please do take a look. No chapters yet but there is a Small rant about what the codex is going to be like. Fixed the spelling on the summary at least and I will post a chapter about what the basic plot soon, already got two reviews about that, and I have set this as AU now.
Rated: T - English - Sci-Fi - Chapters: 1 - Words: 302 - Reviews: 2 - Favs: 1 - Follows: 2 - Published: 5/14
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: 34 - Words: 156,926 - Reviews: 587 - Favs: 686 - Follows: 921 - Updated: 5/14 - Published: 12/1/2011 - Jorge-052/Noble Five, Shepard (F)
Unknown: Everything Will Change by Black Shield INC reviews
In the year 2556 the small yet prospering U.N.S.C colony world of Shanxi is attacked by an unknown species. The events that followed will change everything for both the U.N.S.C and their Allies. I do not own Halo or Mass Effect both games belong to there respective owners.
Rated: T - English - Chapters: 3 - Words: 14,443 - Reviews: 41 - Favs: 125 - Follows: 182 - Updated: 5/14 - Published: 10/11/2014 - Rookie
The Power of the Grail by Metal4k reviews
The Flood and Reapers have taken world after world, and Commander Shepard and Master Chief are on the edge of their rope to find the Halo Array. As they traverse new space and realities, dark secrets will be revealed that could shatter all they know. The enemy has plans of its own, and even Heroes are hopeless to stop it. Sequel to the "Universe of All Reality"
Rated: T - English - Adventure/Sci-Fi - Chapters: 1 - Words: 8,929 - Reviews: 4 - Favs: 29 - Follows: 25 - Published: 5/13 - Master Chief/John-117, Arbiter, Shepard (F), U. Wrex
The Universe of All Reality by Metal4k reviews
"Where does all evil come from? Where does it originate?" There are forces far more ancient, far darker, than the Reapers and Flood. Peace is over. Commander Sheaprd will be faced with new threats and challenges, ones that can transcend reality, ones older than the Universe itself. Multiverse crossover
Rated: T - English - Mystery/Adventure - Chapters: 42 - Words: 236,597 - Reviews: 416 - Favs: 216 - Follows: 268 - Updated: 5/13 - Published: 4/27/2013 - Master Chief/John-117, Shepard (F) - Complete
The Age of Extinction (A New Battleground Part 2) by AlphaGuardian reviews
The Collectors have been defeated, but now the galaxy faces extinction from the Reapers. Their last hope lies in the brave men and women of the SSV Normandy and their Spartan ally. But even they will not be able to save everyone, and everyone has their breaking point. But the fate of the galaxy rests on their shoulders, and failure means extinction.
Rated: T - English - Sci-Fi/Adventure - Chapters: 6 - Words: 23,418 - Reviews: 6 - Favs: 30 - Follows: 37 - Updated: 5/12 - Published: 12/26/2014 - Cortana, SPARTAN-B312/Noble Six, Shepard (M)
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: 15 - Words: 395,664 - Reviews: 80 - Favs: 61 - Follows: 56 - Updated: 5/12 - Published: 6/21/2013 - Master Chief/John-117, Shepard (M)
Precursors Effect by Ny'Kle reviews
Being Rewritten. story covers my take on a Halo/Mass Effect crossover, with bits of others too. Please Read and Review. (This story is AU. Don't like, don't read, but if you read, don't complain about things not being the same as official 343i or Bioware canon and lore. Unless it is constructive)
Rated: T - English - Chapters: 20 - Words: 18,606 - Reviews: 64 - Favs: 43 - Follows: 59 - Updated: 5/11 - Published: 7/12/2012
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: 12 - Words: 119,993 - Reviews: 168 - Favs: 428 - Follows: 513 - Updated: 5/8 - Published: 3/2 - T. Hood, Cortana, Shepard (F)
339 | Page 1 2 3 4 11 .. Last Next »