Halo and Mass Effect Crossovers
Filters
645 | « Prev Page 1 .. 3 4 5 6 7 8 9 16 .. 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: 7 - Words: 17,281 - Reviews: 20 - Favs: 29 - Follows: 20 - Updated: 5/23/2020 - Published: 2/17/2015
Filum Exitium by Officer Durandal reviews
When the UNSC Infinity suddenly finds itself in foreign territory, Captain Lasky is faced with a Challenge no Naval Captain wishes to come across: Be a diplomat.
Rated: M - English - Adventure/Sci-Fi - Chapters: 4 - Words: 11,734 - Reviews: 47 - Favs: 136 - Follows: 222 - Updated: 5/23/2020 - Published: 1/21/2019 - S. Palmer, T. Lasky, Garrus V., Shepard
To Make a Difference by Alcanax reviews
ABANDONNED Mass relay, FTL, slip-space. They bring people closer, but also seem to make the galaxy bigger. Reapers, they come from dark space. But what other dangers lurk between the stars? Pirates, Collectors or worse. Shepard and the Normandy crew will soon find out. Will Fate be merciful? Or will they have to bend it? Set after Halo3, and during ME2.
Rated: M - English - Sci-Fi/Adventure - Chapters: 7 - Words: 74,251 - Reviews: 74 - Favs: 195 - Follows: 319 - Updated: 5/21/2020 - Published: 7/23/2015 - Master Chief/John-117, Shepard
The Howling Dark by smart grid reviews
Two years have passed since the dark day that humanity's best was extinguished. Now it appears that the dead Shepard is not so dead, and that the enemies Jorge helped defeat, are not so defeated. Shepard is going to need humanity's best to take on the genocidal threat of the Collectors. Fortunately for her, Jorge has volunteered to help.
Rated: T - English - Sci-Fi/Adventure - Chapters: 7 - Words: 24,941 - Reviews: 156 - Favs: 640 - Follows: 881 - Updated: 5/12/2020 - Published: 3/4/2019 - Jorge-052/Noble Five, Shepard
Glitters in the Dark by The Flippant Writer reviews
The galaxy is an expansive and mysterious frontier, waiting to be claimed by those bold enough to reach for it. One must be careful not to reach further than they can handle.
Rated: T - English - Sci-Fi - Chapters: 3 - Words: 14,078 - Reviews: 41 - Favs: 132 - Follows: 227 - Updated: 4/27/2020 - Published: 10/17/2019
In the name of Earth and Balaho, till the bitter end! by dutchsoldier reviews
The Reapers say they do not know fear and never experience it, but how long will this remain the truth when Humanities greatest heroes from another dimension come here with ships and allies? Will the name demon rise once more, with now entire armada's of Reapers fleeing at the mere sight of him, or will humanity and their allies die fighting like the Protheans before them?
Rated: T - English - Chapters: 7 - Words: 86,763 - Reviews: 50 - Favs: 148 - Follows: 198 - Updated: 4/20/2020 - Published: 3/21/2019 - Master Chief/John-117, Cortana, Admiral Hackett, Shepard
The Lone Wolf Of The Normandy by SSJ Lone Wolf reviews
Noble Six after managing to survive the fall of Reach is upgraded with Forerunner augmentations, armor, weapons and his first A.I partner is transported to a planet known as Eden Prime. A Systems Alliance colony that just happens to be under attack by a army of synthetics. Well like Carter said "wouldn't be a Noble mission if it were easy."
Rated: M - English - Sci-Fi/Adventure - Chapters: 11 - Words: 74,777 - Reviews: 1327 - Favs: 1,729 - Follows: 2,095 - Updated: 3/27/2020 - Published: 8/9/2016 - [SPARTAN-B312/Noble Six, J. Garson] Garrus V., Tali'Zorah
Halo: Ascension - Status Update on Last Chapter by Hunter63 reviews
[ After the Great War, Humanity begins to rebuild, and while many challenges present itself to the surviving government, nothing will have as much as an impact as Shanxi. The Galaxy shall become the center point for an ancient threat's plans, people of all backgrounds must come together, and Humanity must finally ascend to its rightful throne as inheritors of the Mantle. ]
Rated: T - English - Sci-Fi - Chapters: 5 - Words: 14,217 - Reviews: 35 - Favs: 221 - Follows: 295 - Updated: 3/25/2020 - Published: 5/31/2013 - Master Chief/John-117, Arbiter, J. Garson, Garrus V.
Honor and Glory: Just a Status Update on Chapter 3 by Hunter63 reviews
We have fought for years as warriors of the Systems Alliance, and now we look towards the stars again with hope. We are the Vanguard of of our Mantle, protectors of Humanity and our Alliance. The Citadel might believe they can control the galaxies fate, but they do not hold the Mantle, we do. I am the eye of the Council, an Ossoona. Out of Darkness, these blades will light my way.
Rated: M - English - Sci-Fi/Adventure - Chapters: 3 - Words: 6,792 - Reviews: 18 - Favs: 62 - Follows: 74 - Updated: 3/25/2020 - Published: 10/3/2012 - Arbiter, J. Garson
HaloMass Effect Crossover Idea by SonGoku682 reviews
Just an idea for a halo mass effect story
Rated: M - English - Chapters: 1 - Words: 2,300 - Reviews: 4 - Favs: 2 - Follows: 2 - Published: 3/11/2020 - Master Chief/John-117 - Complete
Book One: Dawn of a New Age by DragonheartODST reviews
Humanity had been expanding across the stars for over 5 centuries in relative peace. But an alien alliance known as the Covenant wishes to destroy humanity entirely. Now threatened with extinction, can the fate of just one battle-scared survivor change the events of the war and those participating in it? Multi-crossover with Halo, Mass Effect, and a little bit of StarCraft. Hiatus
Rated: T - English - Adventure - Chapters: 14 - Words: 131,491 - Reviews: 296 - Favs: 362 - Follows: 421 - Updated: 1/3/2020 - Published: 5/19/2016
This, Our Galaxy by Jocson reviews
A short history of the Orion Arm of the Milky Way Galaxy, from the perspective of those existing within Systems Alliance space, submitted as part of my qualifying project on governmental analysis. July 25, 2585.
Rated: T - English - Sci-Fi/Friendship - Chapters: 2 - Words: 7,752 - Reviews: 10 - Favs: 21 - Follows: 27 - Published: 12/31/2019 - Complete
Silver Lined Clouds by Barrybumhead reviews
Humanity has lost the Human-Covenant war, Sent through time and dimensions. Humanity has a unifying hate behind them. How will this new, bitter and darker humanity react when they realise that they've been building up and waiting for the wrong council of species? Or perhaps something worse?
Rated: T - English - Sci-Fi - Chapters: 2 - Words: 6,190 - Reviews: 29 - Favs: 141 - Follows: 215 - Updated: 12/19/2019 - Published: 10/25/2016 - T. Hood, Cortana
Plight of the Rabbit by TheDscott94 reviews
In which a Spartan is left stranded in a reality not their own. Not the usual suspect however.
Rated: M - English - Sci-Fi/Adventure - Chapters: 2 - Words: 1,531 - Reviews: 4 - Favs: 31 - Follows: 49 - Updated: 11/26/2019 - Published: 2/25/2019 - Kelly-087, J. Garson
A Feeling of Importance by LebendenToten reviews
Shoulda changed this last update but forgot, story is discontinued as I plan on re-writing it, rewrite will be posted on my profile under "A Feeling of Importance MKII". A lot changes over six years, maturity and writing skill included.
Rated: T - English - Adventure/Friendship - Chapters: 23 - Words: 38,917 - Reviews: 181 - Favs: 311 - Follows: 399 - Updated: 9/30/2019 - Published: 11/6/2014 - Master Chief/John-117, C. Halsey, OC, J. Garson
Spartan and Wolf: Realities Collide by Arisentactica reviews
Chief and Cortana drift to a forerunner planet in the remains of the Forward Unto Dawn. In another timeline, in another part of the Galaxy, an admiral is the lone survivor of a costly battle. Will they meet? Will they become allies or bitter enemies? Where will they go and what will they do? M for blood, gore, and language. DROPPED!
Rated: M - English - Sci-Fi/Adventure - Chapters: 7 - Words: 36,109 - Reviews: 36 - Favs: 161 - Follows: 216 - Updated: 9/18/2019 - Published: 10/11/2018 - Master Chief/John-117, Cortana, Librarian, OC
The UNSC and the Citadel Council by Lord Okkirke reviews
What if it had not been the Systems Alliance that made made first contact with the Citadel Species but a UNSC that never encountered the Covenant? The Story begins in 2607 CE(Mass Effect timeline is adjusted by 450 years to line up properly) with the First Contact War.
Rated: T - English - Chapters: 1 - Words: 6,176 - Reviews: 44 - Favs: 202 - Follows: 309 - Published: 9/14/2019
Circuitry by obliviousbushtit reviews
Redemption: a notion all too unrealistic to attain. Thel 'Vadam was well aware the first time the Gravemind drilled it into his head. Through unthinkable circumstances, the Arbiter and Master Chief are thrown into a reality not of their own. Unwittingly the master of the Reapers or not, Thel must find within him the ability to atone. 'Haps a certain Quarian may be able to help...
Rated: T - English - Adventure/Friendship - Chapters: 18 - Words: 52,658 - Reviews: 52 - Favs: 182 - Follows: 268 - Updated: 9/7/2019 - Published: 4/6/2019 - Master Chief/John-117, Arbiter, Tali'Zorah, Legion
The Grave Effect by SaibotReaper Productions reviews
Following the destruction of The Covenant Empire and Truth, The Gravemind had one last trick up it's sleeve for survival fusing it's entire consciousness with a human host ensuring it's survival. Now a lone marine and The Gravemind venture out beyond the galaxy they once knew to a somewhat familiar yet strange galaxy that is brimming with new possibilities. (On Hiatus)
Rated: M - English - Sci-Fi/Adventure - Chapters: 23 - Words: 91,107 - Reviews: 143 - Favs: 324 - Follows: 397 - Updated: 7/27/2019 - Published: 5/16/2017 - Gravemind, OC, J. Garson, Garrus V.
Assorted Dysfunctional Plot Bunnies by RhysThornbery reviews
Basically a place to store my non-Harry Potter plot bunnies.
Rated: T - English - Adventure/Sci-Fi - Chapters: 5 - Words: 37,723 - Reviews: 17 - Favs: 40 - Follows: 47 - Updated: 7/14/2019 - Published: 11/12/2018
The Reclaimer Effect by Seawolf321 reviews
It's the eve of the centennial anniversary of the beginning of the Human-Covenant War. A mere twenty years after the discovery of Prothean Ruins on Mars. A simple case of poor communication leads to a brief but violent conflict erupting and leads to the United Earth Government and it's military arm the UNSCDF coming onto the Galactic Stage of politics, mysteries, and adventures.
Rated: T - English - Adventure - Chapters: 17 - Words: 174,265 - Reviews: 667 - Favs: 1,199 - Follows: 1,663 - Updated: 6/27/2019 - Published: 2/28/2018
Shadow Contingency (v2) by Andrithir reviews
We used to dream about our place in the stars. Now we worry about our place in the void. The War has made us feel alone, desperate, and paranoid. So I come before you and beg you not to make an enemy of us, because if you do, for the next thousand years, the galaxy will talk about how we wiped you out.
Rated: M - English - Sci-Fi/Adventure - Chapters: 2 - Words: 17,299 - Reviews: 28 - Favs: 140 - Follows: 257 - Updated: 6/17/2019 - Published: 6/10/2019 - Master Chief/John-117, Shepard
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
Rated: T - English - Sci-Fi/Adventure - Chapters: 20 - Words: 190,674 - Reviews: 1405 - Favs: 2,538 - Follows: 3,043 - Updated: 6/11/2019 - Published: 1/26/2014
The Spartan Effect by Gatekeeper333 reviews
Everyone's favorite Spartan is looking for a new purpose, lucky for him, the Commander his happy to oblige. (5-23-19 Info: On Hiatus after Chapter 45. Will update with schedule after life is in order.)
Rated: T - English - Chapters: 45 - Words: 495,928 - Reviews: 1762 - Favs: 2,846 - Follows: 3,375 - Updated: 5/23/2019 - Published: 3/27/2011 - Master Chief/John-117, Tali'Zorah, Miranda L., Shepard
Timeline for Olympic Effectt: Part One by Corda Dracon reviews
This story is going to be undergoing a rewrite.
Rated: M - English - Adventure/Romance - Chapters: 1 - Words: 5,408 - Reviews: 12 - Favs: 30 - Follows: 41 - Published: 5/23/2019 - SPARTAN-B312/Noble Six, Liara T'Soni - Complete
645 | « Prev Page 1 .. 3 4 5 6 7 8 9 16 .. Last Next »