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Galactic Conflicts: Tales of First Contact by TheDoctor1998 reviews
Humanity and its allies have stood strong after the Great War with the Covenant. Follow the Systems Alliance as it goes through a first contact nearly as disastrous as the one that lead to the Great War.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 3 - Words: 15,458 - Reviews: 44 - Favs: 144 - Follows: 196 - Updated: 9/30 - Published: 2/6
The Great War by Forgotten Trooper reviews
9BBY The Galactic Empire is a Behemoth, with no Rebellion to speak of and a unstoppable military, it will soon find itself dragged into conflict with unforeseen enemies and unusual allies. The UNSC is losing the war to the Covenant, and the Prophets consolidate their power over their Dominion. These Gargantuan forces will collide in a war that will leave the galaxy forever changed.
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi - Chapters: 3 - Words: 11,641 - Reviews: 16 - Favs: 58 - Follows: 80 - Updated: 9/30 - Published: 8/13 - Darth Vader, Prophet of Truth, P. Cole
Wrong Place, Right Time: A Hero's Story by DLTA-BOT reviews
The journey of a hero doesn't always start where they expect. It doesn't always happen to those who expect it. Damon was never interested in being what SPARTANs represent: an implacable force for good standing as humanity's shield. Like most other third-generation SPARTANs, the war took everything from him. All he wanted was to return the favor. Sometimes we don't get a choice.
Crossover - Fallout & Halo - Rated: T - English - Adventure/Sci-Fi - Chapters: 78 - Words: 920,368 - Reviews: 215 - Favs: 443 - Follows: 477 - Updated: 9/29 - Published: 9/29/2020 - Sole Survivor, Arthur Maxson, Shaun, OC
Mobile Suit Gundam:The War of Reunion by Johnnieboy11 reviews
Asticassia School is gone. The DAWN OF FOLD, or someone else, destroyed it. Cast from their time and place, two young women and their Gundam now find themselves amidst the waning days of the greatest war this world's version of mankind has ever faced. Survival is not guaranteed, though there is hope, perhaps now, more than ever, for humanity.
Crossover - Halo & Mobile Suit Gundam: The Witch from Mercury - Rated: M - English - Suspense/Sci-Fi - Chapters: 2 - Words: 9,950 - Reviews: 17 - Favs: 85 - Follows: 93 - Updated: 9/29 - Published: 9/13 - [Suletta M., Miorine R.] Master Chief/John-117, Cortana
Green Machine by giblo126 reviews
When a Resistance base is attacked by a Combine army, a mysterious hero comes to save them
Crossover - Half-Life & Halo - Rated: T - English - Sci-Fi - Chapters: 1 - Words: 1,289 - Reviews: 1 - Favs: 3 - Follows: 5 - Published: 9/28
Semper Vigiles by Cypher1597 reviews
Headhunter. Spartan. Killer. Cyrus was many things, but killer is the most accurate term. Now he stands in a city full of killers all vying to be top dog. Let those fools climb over one another to reach the apex. It won't matter because soon it will all come crashing down. All of it, for we are but motes of dust and echoes. From dust we rise and to dust we go. Semper Vigiles.
Crossover - Halo & Cyberpunk 2077 - Rated: M - English - Adventure - Chapters: 2 - Words: 11,587 - Reviews: 46 - Favs: 211 - Follows: 258 - Updated: 9/27 - Published: 9/21
The Song of Infinity by Johnnieboy11 reviews
As the battle of Christophsis is ongoing, a new faction emerges over the crystalline battlefield. Confusion, worry and fear permeate the Republic lines until a first shot is fired in anger by the Confederacy. A change stirs in the Force, the Reclaimers are awakening and the Galaxy at large is powerless to stop them.
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 17 - Words: 68,020 - Reviews: 130 - Favs: 536 - Follows: 684 - Updated: 9/27 - Published: 3/23 - Anakin Skywalker, Ahsoka T., Master Chief/John-117, T. Lasky
Horizon War:Tales of the UNSC-Citizen Federation War by Johnnieboy11 reviews
A chance encounter with Forerunner Technology leads the UNSC to discover a two-way portal which leads into a Universe so similar, yet ever so different from their own. First contact with said Universe's humanity, however, goes awfully wrong, sparking the greatest war since the Human-Covenant War. These are the tales of those who fought in it.
Crossover - Halo & Starship Troopers - Rated: M - English - Adventure/Sci-Fi - Chapters: 12 - Words: 44,890 - Reviews: 148 - Favs: 203 - Follows: 269 - Updated: 9/25 - Published: 6/13 - [J. Rico, Dizzy F.] C. Halsey, T. Lasky
Code Lyoko: War logs 1 by superman42 reviews
the stories are out of order. this is the correct timeline in case you're confused: Heart of Ice (this is an alternate version that sets up crisis core for War Logs 2 which is the actual Crisis Core, this version is a scrapped concept) Dark harvest (CH 1) from here the chapters are: ( left side actual chapter) 3 (ch 2) 4 (ch 3) 5 (ch 4) 6 (ch 7) 7 (ch 5) 8 (ch 6) 9 (ch 8) HOI WL2
Crossover - Code Lyoko & Halo - Rated: M - English - Tragedy/Drama - Chapters: 14 - Words: 15,532 - Reviews: 8 - Favs: 3 - Follows: 2 - Updated: 9/25 - Published: 3/1/2022 - Aelita S., Jeremie B., Yumi I., OC - Complete
Justice League of Amazons: Halo by Angry lil' elf reviews
In a world where the rogue Amazon Aresia succeeds in her plan to wipe out all men on Earth, she has doomed humanity to extinction and a newly reformed Justice League must try and salvage the world. But hope is not lost and it comes in the form of a Spartan II Commando and his AI from another universe. His name: Master Chief Petty Officer John-117.
Crossover - Halo & Justice League - Rated: M - English - Sci-Fi/Adventure - Chapters: 15 - Words: 86,336 - Reviews: 312 - Favs: 1,059 - Follows: 1,083 - Updated: 9/24 - Published: 1/13/2016 - Master Chief/John-117, Diana of Themyscira/Wonder Woman, Shiera H./Shayera Hol/Hawkgirl
HALO: Dead Man of the Moon by UH-60 NIGHTSTALKER reviews
When a new yet familiar Enemy threatens Neo-Queen Serenity and her court/friends, an unlikely ally appears and just happens to have a UNSC Warship at his command. But can Serenity's Senshi trust this new armored clad stranger?
Crossover - Halo & Sailor Moon - Rated: T - English - Adventure/Sci-Fi - Chapters: 22 - Words: 63,234 - Reviews: 98 - Favs: 129 - Follows: 154 - Updated: 9/22 - Published: 1/30/2021 - Neo-Queen Serenity, OC
spartan returns home by phoenix emperor 23 reviews
injured on a mission the first son of minato and kushina. he found something that put him in a war he never thought was possible. on his final mission on reach he chose to be behind. with the wider of the UNSC and ONI thought he died on reach. he had a chance to go back. now he must defended his family and the woman he love from the shadows. even it means the world to think he dead
Crossover - Halo & Naruto - Rated: M - English - Romance - Chapters: 5 - Words: 19,937 - Reviews: 6 - Favs: 66 - Follows: 90 - Updated: 9/21 - Published: 11/1/2021 - [SPARTAN-B312/Noble Six, Hana I.] [Minato N., Kushina U.]
Zero Trust by Roach99 reviews
After unfortunate circumstances, a stranger finds himself in a familiar but stranger land. Though lost and cut off, this is not the end. Rather, a possible new beginning. A place of sights and circumstance- the conclusion of one phase of life and the beginning of another. A new life to be found, and another conflict to wage.
Crossover - Halo & Cyberpunk 2077 - Rated: M - English - Adventure - Chapters: 1 - Words: 7,841 - Reviews: 8 - Favs: 64 - Follows: 100 - Published: 9/21 - OC, V
The Spartan and The Heiress by ArmadaScream reviews
After destroying the Flood and escaping the Ark Master Chief and Cortana find themselves on a strange new world where monsters roam freely, and magic truly exists. Together with Weiss Schnee, a huntress in training the unlikely trio will fight the forces of evil and save the world.
Crossover - RWBY & Halo - Rated: T - English - Adventure/Fantasy - Chapters: 4 - Words: 18,172 - Reviews: 18 - Favs: 73 - Follows: 112 - Updated: 9/21 - Published: 3/21 - Weiss S., Master Chief/John-117, Cortana, Team RWBY
RWBY:Spartan Assault by Johnnieboy11 reviews
After John-117's battle on board Mantle's Approach, the Spartan finds himself, with Cortana in tow, sent to a different world, where monsters roam the wilds, Humanity is confined to 4 major Kingdoms and where Magic and Tech coexist. The Spartan will soon have to join the ranks of the good guys against a horrid threat, whilst also on the lookout for fellow Spartans.
Crossover - Halo & RWBY - Rated: T - English - Adventure/Sci-Fi - Chapters: 30 - Words: 133,954 - Reviews: 203 - Favs: 559 - Follows: 686 - Updated: 9/21 - Published: 1/12/2021 - [Master Chief/John-117, Cortana] C. Halsey, Team RWBY
Operation Unusual Paperwork by kpmh2001 reviews
A side story containing all of the story exerpts, post chapter nonsense, and omakes that the world of The Men From Onyx has to offer, now in one convenient package! Warning: The tone and intention of these short stories will change on a by-chapter basis, tonal consistency is effectively not a consideration.
Crossover - Halo & RWBY - Rated: T - English - Parody/Humor - Chapters: 38 - Words: 138,153 - Reviews: 190 - Favs: 104 - Follows: 109 - Updated: 9/20 - Published: 10/4/2019
Dance With the Devil (2) by ghost company reviews
Vader had it all planned out. Sidious would die. For years he had plotted, conspired, murdered, and forged elaborate lies to get to this point. However, when the Force throws in a new variable, years of planing are called into question. Will the Sith Lord be able to complete his revenge, and who will he be in the end... Anakin or Vader?
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 14 - Words: 90,991 - Reviews: 106 - Favs: 289 - Follows: 376 - Updated: 9/20 - Published: 11/21/2018
Halo Over These Digital Pockets by Yoshizilla-Rhedosaurus
Master Chief has a hard time winning for his team with a pair of capsule creatures from digital pockets not exactly helping out.
Crossover - Digimon/Pokemon & Halo - Rated: T - English - Humor/Hurt/Comfort - Chapters: 1 - Words: 157 - Published: 9/19 - Master Chief/John-117 - Complete
Halo: Eagle's Incantation by GruntBasher reviews
Shirou and Artoria vowed to reunite as starcrossed lovers; this was not what they had in mind. Being reborn for some inextricable reason, they are flung to the far future. A world where technology has advanced leaps and bounds, a world without a need for heroes. Regardless, history must march on, and Fate has quite an interest in making some new heroes...
Crossover - Halo & Fate/stay night - Rated: T - English - Adventure/Sci-Fi - Chapters: 9 - Words: 44,486 - Reviews: 55 - Favs: 244 - Follows: 346 - Updated: 9/19 - Published: 8/11/2022 - [Arturia Pendragon, Shirō E.] Rin T., Illyasviel von Einzbern
Everything is Fair in Love and War by VastErimos reviews
So you died? Nailed it. Here try again for my entertainment. OPMC, Waifu Catalog fic, if you have a problem with either of these that’s fine. Currently in Stargate.
Crossover - Halo & X-overs - Rated: M - English - Sci-Fi/Friendship - Chapters: 12 - Words: 46,572 - Reviews: 44 - Favs: 93 - Follows: 116 - Updated: 9/19 - Published: 8/9/2022 - Fred-104, Serina
Were it So Easy by Sigma0327 reviews
Six's life was a giant war. Every battle was a test of sheer tenacity and stubbornness against insurmountable odds. Every moment, every bullet fired, every Covenant, Insurrectionist, and Flood spore killed has led up to his last fight. Once again he was one of the few that stood between Earth and her enemies. This would be his final battle, and nothing could change that, right?
Crossover - Halo & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 11 - Words: 157,359 - Reviews: 215 - Favs: 952 - Follows: 1,367 - Updated: 9/17 - Published: 11/9/2020 - SPARTAN-B312/Noble Six, Tali'Zorah, Miranda L., Shepard
It Started At Shanxi by SpaceTurtleOX reviews
Fifty years after the end of the Human-Covenant War an ill-fated UNSC expedition opens Relay 314, revealing a civilization unprepared for their arrival, and relics from a terrible past.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 17 - Words: 90,290 - Reviews: 609 - Favs: 1,875 - Follows: 2,774 - Updated: 9/16 - Published: 7/26/2019 - Master Chief/John-117, Cortana, Zaeed M., OC
Harry Potter got trained by Driver1985 reviews
On the night Harry would have been dropped off by his Aunt, Dumbledore had someone else in mind. What if Harry was taken in by other strong people and they even decided to train him? Trained to be a Warrior by Wolves and the UNSC, he will change the world. OP, smart, trained Harry, small harem double cross with Witcher and Halo
Crossover - Harry Potter & Halo - Rated: M - English - Fantasy/Sci-Fi - Chapters: 85 - Words: 425,157 - Reviews: 349 - Favs: 742 - Follows: 867 - Updated: 9/14 - Published: 9/30/2021 - [Harry P., Hermione G., Daphne G.] Master Chief/John-117
The Demon Of The Nine-Nine by SSJ Lone Wolf reviews
It had been ten years since Noble Six joined the NYPD, following the fall of Reach, quickly moving through the ranks and making detective, but when he is transferred to the 99th precinct he finds his life flipped upside down when he had to work alongside the eccentric squad of the Nine-Nine. If his own past doesn't drive him insane...they certainly will!
Crossover - Halo & Brooklyn Nine-Nine - Rated: M - English - Chapters: 19 - Words: 141,309 - Reviews: 611 - Favs: 866 - Follows: 964 - Updated: 9/14 - Published: 10/5/2021 - SPARTAN-B312/Noble Six, Jake P., Amy S, Rosa D.
Legacy of the Precursors (Revised Edition) by DrakeTheTraveller reviews
A legacy is what man leaves behind, the culmination of past deeds laid down at his feet for those who come after. Noble Six walks in the footsteps of his predecessors, peerless warriors and tacticians. As a spartan, war is his birthright. As a man he has nothing to call his own, no legacy to his name. But after Reach's fall, he discovers just what inheritance he will leave behind.
Crossover - Star Fox & Halo - Rated: M - English - Drama/Adventure - Chapters: 16 - Words: 161,685 - Reviews: 317 - Favs: 453 - Follows: 543 - Updated: 9/14 - Published: 3/10/2019 - Fox M., Krystal, Miyu, SPARTAN-B312/Noble Six
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