Halo Crossovers
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The Council vs Republic Redux by LegoDoc reviews
The Coalition of United Species, vs The Republic. This is effectively a remake of "TheHaloProjects" original story. To TheHaloProject, let me know how i did
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi - Chapters: 10 - Words: 27,228 - Reviews: 108 - Favs: 130 - Follows: 168 - Updated: 3/11 - Published: 11/6/2019 - Anakin Skywalker, Obi-Wan K., Master Chief/John-117, A. J. Johnson
HaloMass Effect Crossover Idea by SonGoku682 reviews
Just an idea for a halo mass effect story
Crossover - Halo & Mass Effect - Rated: M - English - Chapters: 1 - Words: 2,300 - Reviews: 4 - Favs: 2 - Follows: 2 - Published: 3/11 - Master Chief/John-117 - Complete
Halo: The First Conflict by LUN4RECL1PS3 reviews
As the covenant have gone through the great schism, and are no longer a threat. A new enemy has emerged. An enemy greather than anything the UNSC had ever faced.
Crossover - Star Wars & Halo - Rated: M - English - Fantasy/Sci-Fi - Chapters: 11 - Words: 6,341 - Reviews: 7 - Favs: 12 - Follows: 11 - Updated: 3/10 - Published: 1/11/2018
Final Frontier by Cipher32 reviews
For us the storm has passed, it's time to honor those who never return in this dreadful voyage. As human carved their loved ones' names to a stone pillar of remembrance, they carved ours' into their hearts as an utmost symbol of gratitude, and in them we would never be forgotten amidst time for it is the greatest way they honor us. UNSC Enterprise, requesting immediate recovery.
Crossover - Halo & Azur Lane/碧蓝航线 - Rated: T - English - Sci-Fi/Adventure - Chapters: 3 - Words: 19,595 - Reviews: 32 - Favs: 104 - Follows: 142 - Updated: 3/10 - Published: 1/21 - OC, Enterprise, Cleveland, Vestal
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.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 20 - Words: 39,266 - Reviews: 16 - Favs: 25 - Follows: 18 - Updated: 3/7 - Published: 4/21/2015
The Damaged ODST by Rookie1998 reviews
An ODST is mysteriously transported to the Mass Effect universe when a slip space accident occurs amidst the finale evacuation of Reach. Will he be a help or hindrance in the fight to come?
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 5 - Words: 12,692 - Reviews: 12 - Favs: 34 - Follows: 64 - Updated: 3/7 - Published: 9/19/2019 - OC, Shepard
Empires at war by WritofUnions reviews
Entire worlds have gone dark in only hours, their surfaces hot, marred glass. Nobody is left. Fleets have disappeared with haunting, broken transmissions as their final words. The force reeks of death, with no clue to what is killing... On the blood of our fathers, On the blood of our sons, we swore to uphold the Covenant. A dark time for the great journey lies ahead.
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi - Chapters: 3 - Words: 2,129 - Reviews: 2 - Favs: 4 - Follows: 14 - Updated: 3/6 - Published: 9/20/2019
Agent Reach by A Lovestruck A2 reviews
After the events of Lone Wolf, Noble Six wakes up aboard the Mother of Invention. He is offered a chance from the Director to become an agent of Project Freelancer. He takes it, but will the heart of a frozen warrior need help from another? Cover art is in-game footage.
Crossover - Halo & Red vs. Blue - Rated: M - English - Sci-Fi/Romance - Chapters: 66 - Words: 230,055 - Reviews: 575 - Favs: 704 - Follows: 719 - Updated: 3/5 - Published: 10/8/2014 - [SPARTAN-B312/Noble Six, Tex/Allison] Maine/Meta
War, Peace, and other Galactic Customs by The Almighty Afroduck reviews
After a long, terrible war, the Federation of Sovereign Empires forms as the product of the alliance created early in the Great War between the Covenant Separatists and the UNSC. Time passes as they progress greatly, eventually discovering the existence of other galactic governments. The events that will follow will change the course of the galaxy in more ways than one. PART- 3
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 35 - Words: 400,974 - Reviews: 679 - Favs: 1,086 - Follows: 1,348 - Updated: 3/4 - Published: 3/1/2014
Re:Zero-Spartan III by SSJ Red graffiti reviews
(New Chapter percentage: 15%) B-312 awakens a month before the Re: Zero story took place. Noble Six has made connections with the wrong people and was soon hired as a Personal Grim Reaper to either kill Emilia or steal her insignia. But because the Spartan was a very Xenophobic super-soldier, he'd much rather murder the Silver-Haired Half-Devil than spare the mongrel's life!
Crossover - Halo & Re:Zero - Rated: T - English - Mystery/Adventure - Chapters: 17 - Words: 99,975 - Reviews: 97 - Favs: 83 - Follows: 102 - Updated: 3/3 - Published: 12/2/2018
Spartan Impact by marseldagistani reviews
Read to find out
Crossover - Halo & Honkai Impact 3rd - Rated: T - English - Adventure - Chapters: 3 - Words: 3,719 - Reviews: 1 - Favs: 3 - Follows: 3 - Updated: 3/3 - Published: 2/23
The Lost Civilization by Apollonir reviews
After the Battle of the Ark, a UNSC Pelican dropship crash lands on Thessia. Two ODSTs survive the crash and make contact with primitive Asari. Ninety thousand years later, Liara T'Soni discovers a strange looking aircraft and Human remains in an ancient cave burial chamber. The discovery she makes will take the Asari on a journey to discover their true lineage.
Crossover - Halo & Mass Effect - Rated: T - English - Mystery/Suspense - Chapters: 9 - Words: 16,933 - Reviews: 450 - Favs: 1,403 - Follows: 2,035 - Updated: 3/1 - Published: 7/2/2017 - Ashley W., Liara T'Soni, Mordin S., Shepard
SGU: Season 3 (Spin-off to The Fifth-Race Reclaimers) by Piero217 reviews
After a three-year long journey through FTL, Young and Rush are awakened by Eli only to receive some very distressing news. But just when all hope seems lost, a group of newcomers comes along who claim to be allied with the SGC—and capable of restoring Destiny. Too good to be true? Only time will tell. (Written in collaboration with AdmiralWhiteFang)
Crossover - Halo & Stargate: Universe - Rated: T - English - Sci-Fi/Drama - Chapters: 2 - Words: 17,599 - Reviews: 9 - Favs: 31 - Follows: 47 - Updated: 2/29 - Published: 9/22/2019 - OC, Eli W., Dr. N. Rush, Col. E. Young
HALO: Iunctus by JonathanO'Riley reviews
After drifting in space aboard the crippled Forward Unto Dawn for over four years, Master Chief and Cortana find themselves on a world uncharted and untouched by either the UNSC or the Covenant. Inhabited by a primitive civilization of Humans with strange abilities, this planet hosts a brand new challenge. But deep within, age-old secrets will reveal not all is as it seems.
Crossover - Halo & Naruto - Rated: T - English - Adventure/Sci-Fi - Chapters: 8 - Words: 34,249 - Reviews: 140 - Favs: 358 - Follows: 466 - Updated: 2/29 - Published: 11/30/2016 - Master Chief/John-117, Cortana, Naruto U.
Flight of the Twin Eagles by Blazblade reviews
UNSC and GDI. Two different military forces, both made to defend Humanity from forces that would destroy it. Through an anomaly in space, these two would meet in order stop a threat against one humanity as a legend is found by the Initiative. New and old threats soon appear around the two groups as a new alliance is formed. The two eagles take flight into new skies.
Crossover - Command & Conquer & Halo - Rated: T - English - Adventure/Sci-Fi - Chapters: 11 - Words: 176,345 - Reviews: 155 - Favs: 133 - Follows: 170 - Updated: 2/29 - Published: 1/10/2018 - GDI Commander, OC, Master Chief/John-117, T. Lasky
The Reclamation has already begun by Fade Maybe reviews
The Citadel Council and the Systems Alliance fight for survival against the Reaper onslaught. However, the UNSC, politically divided and still recovering from the Didact's assault discovers a Mass Relay that will force them into the fight and change the course of galactic history forever. The Reclamation has already begun, and we are hopeless to stop it. ME3/post Halo 4
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 41 - Words: 380,514 - Reviews: 1235 - Favs: 1,306 - Follows: 1,683 - Updated: 2/29 - Published: 3/13/2013
To Infinity by creamofwheat2311 reviews
After discovering an ancient artifact, the UNSC's most advanced warship and a Sangheili Assault Carrier are transported to a universe unlike anything they have ever seen, and forced into a war against a foe they never could have imagined.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 49 - Words: 426,079 - Reviews: 3767 - Favs: 4,427 - Follows: 5,268 - Updated: 2/28 - Published: 10/9/2013 - Master Chief/John-117, Arbiter, T. Lasky, Shepard
Halo: Contact Neuroi by BbK2442 reviews
The crew of the UNSC Fearless will face their greatest challenge yet. When the testing of an experimental FTL drive goes wrong, the crew find themselves flung into another universe; one where humanity is fighting for survival against an alien menace. Yet is this even their fight? What will the crew of the Fearless do? And what is the deal with the magical witches flying around?
Crossover - Halo & Strike Witches - Rated: M - English - Sci-Fi/Fantasy - Chapters: 7 - Words: 85,443 - Reviews: 229 - Favs: 252 - Follows: 314 - Updated: 2/27 - Published: 6/22/2014
Hero of Honour by Stephano1294 reviews
What happens if Izuku was born with a quirk? One that belongs to a species from Halo? Well, He ends up with a worse start to his life than his quirkless self
Crossover - My Hero Academia/僕のヒーローアカデミア & Halo - Rated: M - English - Hurt/Comfort/Romance - Chapters: 6 - Words: 21,418 - Reviews: 17 - Favs: 203 - Follows: 252 - Updated: 2/27 - Published: 10/8/2019 - [Izuku M., Momo Y., Tsuyu A., Mina A.]
All the Stars by BlueWay reviews
When the Long Night of Solace is evaporated over Reach via the weaponized usage of a Slipspace Drive, it ferries with it in its swallowed sections the Covenant Empire and, more horrifyingly, the desperate measures that the UNSC used to fight them. When they are found in a universe on the precipice of their own history, the meaning of the term "Mass Effect" will change forever.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 24 - Words: 419,021 - Reviews: 547 - Favs: 893 - Follows: 1,168 - Updated: 2/27 - Published: 6/8/2018 - SPARTAN-B312/Noble Six, Rookie, J. Garson
A Graves Mind by xXxThatCoolGuyxXx reviews
Status: Online System diagnostics...23% Serial code:007-7751276-ASEQ34R7609 Objective: To...Error Project name: Orin Creator choice: Jacob Program...Active Deploying... P.S. this a fanfic that the gravemind is the only halo character i want to use since he is never used and he is my favorite character.
Crossover - Spyro the Dragon & Halo - Rated: T - English - Adventure/Sci-Fi - Chapters: 4 - Words: 3,736 - Reviews: 1 - Favs: 2 - Follows: 1 - Updated: 2/26 - Published: 12/7/2019 - Spyro, Malefor/The Dark Master, OC, Gravemind
Spectrum of War by Mkchief34 reviews
The Republic and the Separatist Alliance are vying to take control of a seemingly uninhabited world on the very edge of Wild Space. However, neither side knows this world is actually overseen by the UNSC and the Swords of Sanghelios. Now all sides face the possibility of having the residents of the Milky Way as allies...or enemies. Set after Halo 5 and in Season 2 of Clone Wars.
Crossover - Halo & Star Wars: The Clone Wars - Rated: T - English - Sci-Fi/Adventure - Chapters: 6 - Words: 8,895 - Reviews: 54 - Favs: 282 - Follows: 408 - Updated: 2/26 - Published: 6/5/2019 - T. Lasky, OC, Ahsoka T., Anakin S.
Voyage unto Infinity by supertruckin reviews
The USS Voyager comes face to face with the massive ship that is the UNSC Infinity after Voyager's nearly fatal first test of their slipstream warp drive. Getting home isn't their only issue. They will have to work together in order to unravel the ancient threat that plagues the new galaxy that they find themselves in. Star Trek:Voyager, Mass Effect, and Halo triple crossover
Crossover - Mass Effect & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 13 - Words: 66,230 - Reviews: 361 - Favs: 882 - Follows: 1,234 - Updated: 2/25 - Published: 4/10/2019 - Master Chief/John-117, Cortana, Shepard
A Gift of Hope by SaltierSalt reviews
What would you do in order to give the gift of hope?
Crossover - Halo & Kantai Collection - Rated: M - English - Sci-Fi/Suspense - Chapters: 1 - Words: 156 - Reviews: 2 - Favs: 2 - Follows: 6 - Published: 2/25
The Valorous Crusade by Narukami96 reviews
"War, war never changes" that's how the saying goes only this time it did, the arrival of a new collective of Xenos species sees to shake the balance of the galaxy once more. Nathaniel, Chapter Master of the Angels of Aggression chapter of Space Marines, is now face to face with a new empire and must battle them and the other foes of mankind in the Valorous sector to regain control
Crossover - Warhammer & Halo - Rated: M - English - Sci-Fi/Fantasy - Chapters: 5 - Words: 15,400 - Reviews: 6 - Favs: 20 - Follows: 36 - Updated: 2/23 - Published: 3/20/2019 - Chaos Space Marines, Sisters of Battle, OC, Arbiter
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