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Reunion in Fire by Illuviar reviews
For thirty years, humanity led by the UNSC has fought a war against the Covenant. The Covenant glassed hundreds of colonies and killed billions. Humanity is losing the war. At the same time, a galaxy away, the Federated Empire rises from the ashes of the Clone Wars and the Black Rebellion, slowly rebuilding. It is at this time, that the last of the Precursors decided to intervene.
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 25 - Words: 94,529 - Reviews: 62 - Favs: 185 - Follows: 198 - Updated: 49m - Published: 3/11 - Anakin Skywalker, Obi-Wan K., Master Chief/John-117, SPARTAN-B312/Noble Six
Project Atlas by Masso 2010 reviews
The Spartans are trained to be unthinking, unflinching and unmoving in the face of the impossible. Project Atlas is so much more, when humanity looks up into the sky they can see Hope, Justice, Reverence. When those that seek to hurt humanity look up into the sky, they see the warrior, the monster, the demon. To those who seek the destruction of humanity, he is the Cataclysm.
Crossover - Superman & Halo - Rated: M - English - Adventure/Sci-Fi - Chapters: 13 - Words: 112,404 - Reviews: 147 - Favs: 331 - Follows: 404 - Updated: 5h - Published: 4/17/2022 - Clark K./Kal-El/Superman, Master Chief/John-117
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: 44 - Words: 760,975 - Reviews: 1243 - Favs: 1,716 - Follows: 2,063 - Updated: 15h - Published: 6/8/2018 - SPARTAN-B312/Noble Six, Rookie
Operation: WASTELAND by Spartan-049 reviews
When the UNSC corvette West Virginia finds herself crippled and trapped in a strange irradiated world, her crew allies with one of the largest groups around in the hopes of getting back home again.
Crossover - Fallout & Halo - Rated: T - English - Adventure/Western - Chapters: 4 - Words: 13,287 - Reviews: 4 - Favs: 22 - Follows: 24 - Updated: 3/29 - Published: 3/17
Enduring the Flames of War by Masterdude21 reviews
A joint Asari-Turian operation salvaged a "package" from a derelict wreckage in the Terminus Systems, whereupon they release a force of war beyond their reckoning. Hoping to avoid another war, Commander Shepard recruits the "package" into her team. A simple act of kindness, unwittingly paving the way for a clash unlike the galaxy has ever seen. Fate directs the flames of war.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Horror - Chapters: 48 - Words: 711,437 - Reviews: 2478 - Favs: 3,776 - Follows: 4,601 - Updated: 3/28 - Published: 11/30/2015 - Master Chief/John-117, OC, Shepard
Losing is Fun by Fabulous Wizard reviews
A typical self insert story where our hero gets to rule over his own civilization, complete with custom oc race. Everything should have been great. Only problem is that he's in Warhammer 40k, bordering a major Ork empire, has a population of only 200,000, and his starting location is in North Korea.
Crossover - Warhammer & Halo - Rated: T - English - Chapters: 1 - Words: 2,894 - Reviews: 2 - Favs: 14 - Follows: 15 - Published: 3/28
The Sins of our Fathers by MarkerMagnum reviews
Unknown to the Citadel Council, the Human-Covenant war nears its vicious end. Miranda Keyes is seconds too slow. Delta Halo fires, leaving UNSC space as a lifeless snapshot in time. The Citadel must morn the loss of a civilization they never knew. Crossposted by myself, Jabber the very wocky on Ao3.
Crossover - Halo & Mass Effect - Rated: T - English - Drama/Sci-Fi - Chapters: 5 - Words: 40,012 - Reviews: 166 - Favs: 448 - Follows: 647 - Updated: 3/28 - Published: 2/11 - Master Chief/John-117, Miranda K., Cortana
Halo: From Spartan to Seran by CommanderAuri reviews
What was originally set to be a smash and grab mission goes completely sideways. A haphazard escape through teleporter on the shield world Requiem's surface sends Spartan Commander Rachel Auri flying head over heels onto foreign soil with hostile contacts right on her tail. Follow her story as she tries to survive a planet that is constantly attempting to kill off it inhabitants.
Crossover - Halo & Gears of War - Rated: K - English - Sci-Fi/Adventure - Chapters: 5 - Words: 38,506 - Reviews: 21 - Favs: 30 - Follows: 35 - Updated: 3/27 - Published: 11/9/2022 - Marcus F., Dominic S., A. Cole, D. Baird
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: 3 - Words: 12,755 - Reviews: 20 - Favs: 129 - Follows: 166 - Updated: 3/27 - Published: 3/23 - Anakin Skywalker, Ahsoka T., Master Chief/John-117, T. Lasky
Blade of truth by Lighting wolf knight reviews
As the truth is revealed, a war shatters the covenant and its allies even more. Rated T for violence, death and profanity.
Crossover - Star Wars & Halo - Rated: T - English - Adventure/Sci-Fi - Chapters: 4 - Words: 11,053 - Reviews: 2 - Favs: 11 - Follows: 10 - Updated: 3/27 - Published: 3/3 - Arbiter, OC
Ghosts of Reach: The Familiar Vanguard by Dan Is Here reviews
Louise, mocked for her lack of magic, aims to prove herself in a familiar summoning ritual. Despite low expectations, she inadvertently summons deceased Noble Team members Jorge, Kat, Carter, Noble Six, and Emile as her familiars. This unexpected outcome shocks everyone, including Louise, as they come to terms with their new partnership.
Crossover - Halo & Familiar of Zero - Rated: M - English - Sci-Fi/Adventure - Chapters: 5 - Words: 19,565 - Reviews: 6 - Favs: 32 - Follows: 42 - Updated: 3/27 - Published: 3/22 - Carter-A259/Noble One, SPARTAN-B312/Noble Six, Louise
Forward Unto Dawn by TheWizardofOzbourne reviews
Triple Crossover, TSCC/Halo w/Star Trek: Voy/DS9/TNG elements. Trapped in a universe similar to our own, Cameron and John Henry struggle to return home. To do so, three gifts, each from another universe, will get them home and entangle them in a war they thought they knew. Eventual Jameron and MC/Cortana. Updated! 3/26/2023 CH51 Posted!
Crossover - Terminator: Sarah Connor Chronicles & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 51 - Words: 402,461 - Reviews: 613 - Favs: 273 - Follows: 329 - Updated: 3/26 - Published: 3/26/2013 - [John C., Cameron] [Cortana, Master Chief/John-117]
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: 13 - Words: 84,814 - Reviews: 92 - Favs: 266 - Follows: 353 - Updated: 3/26 - Published: 11/21/2018
Halo: The Lost Child by ImpulseFitz reviews
Ruby Rose was an ordinary girl dreaming of fairy tales when a freak incident led her far away from home. Believing her family dead, she agrees to train to become a Spartan. After a grueling defeat, she once again is whisked away to a distant world: her home, Remnant. There is no time for reunions. There is no time to rest and to mourn. The fate of the galaxy is at stake.
Crossover - Halo & RWBY - Rated: M - English - Adventure/Sci-Fi - Chapters: 24 - Words: 287,151 - Reviews: 415 - Favs: 542 - Follows: 749 - Updated: 3/26 - Published: 6/5/2021 - SPARTAN-B312/Noble Six, Ruby R., Yang X.L.
BattleTech: Combat Evolved by IX404 reviews
While fleeing from the Inner Sphere following the Amaris Coup, the Exodus Fleet discovers an object out in the inky blackness of space. Little does General Kerensky or his sons know is that they will soon be within the center of a conflict that will decide the fate of Humanity and place the Star League-in-Exile at the forefront of the conflict.
Crossover - Mechwarrior/Battletech & Halo - Rated: T - English - Sci-Fi/Drama - Chapters: 21 - Words: 108,008 - Reviews: 279 - Favs: 234 - Follows: 243 - Updated: 3/26 - Published: 8/25/2022 - Master Chief/John-117, A. J. Johnson, Arbiter, 343 Guilty Spark
Semper Vigiles by Cypher1597 reviews
Headhunter, a program propagated by the Office of Naval Intelligence. After a final act of defiance against the Covenant, a Headhunter must find his place in a city ruled by corporate greed, bloodthirsty mercenaries, and roaming bands of vicious scavengers. It is the perfect hunting ground for one of ONI's most accomplished killers. Semper Vigiles - Always Vigilant.
Crossover - Halo & Cyberpunk 2077 - Rated: M - English - Adventure - Chapters: 63 - Words: 423,091 - Reviews: 779 - Favs: 1,299 - Follows: 1,500 - Updated: 3/26 - Published: 12/20/2020 - OC, V, Panam P.
Stratagem by Temujin the Obliterator reviews
ONI operative Major Colton Martel and his team of spies, assassins, and commandos have been fighting a covert war against the CIS when they stumble upon a conspiracy. The biggest one of the century. They become locked in a dangerous game of intrigue, espionage, and war. As the galaxy titters on the brink of chaos. A Halo/Star Wars AU that also brings together canon and legends.
Crossover - Star Wars & Halo - Rated: M - English - Adventure/Sci-Fi - Chapters: 4 - Words: 27,514 - Reviews: 6 - Favs: 23 - Follows: 32 - Updated: 3/25 - Published: 10/10/2022
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: 71 - Words: 341,488 - Reviews: 251 - Favs: 596 - Follows: 704 - Updated: 3/25 - Published: 9/30/2021 - [Harry P., Hermione G., Daphne G.] Master Chief/John-117
Spirit of Humanity by Spartastic 4 reviews
A ship that was 'Lost with all hands.' A ship that was well past her prime that continued to fight. A ship that now finds herself far from those who crewed her and even further than the war she knew. But Humanity was still under attack from an alien force and she knew how to combat that all too well. She'll show both the Sirens and Ship Girls why she is Humanities’ Spirit of Fire.
Crossover - Halo & Azur Lane/碧蓝航线 - Rated: M - English - Sci-Fi/Adventure - Chapters: 2 - Words: 2,943 - Reviews: 20 - Favs: 94 - Follows: 129 - Updated: 3/25 - Published: 8/9/2020
Star Wars: Tales of the Infinity's Odyssey by IX404 reviews
While many know of the story of Lasky, the Master Chief and his compatriots, few people know of the stories that happened during these major events. These are the stories of the men and women that also experienced the Odyssey of the Infinity.
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 16 - Words: 83,610 - Reviews: 98 - Favs: 154 - Follows: 172 - Updated: 3/24 - Published: 11/25/2022 - G. Marek/Starkiller, Jyn E., T. Hood, C. Halsey
Heroes Legends Immortal by SixSpartan reviews
They trained 10 years to become the new generation of heroes. Now as villains attcks USJ the SPARTANs reveal themselves to the world.
Crossover - Halo & My Hero Academia/僕のヒーローアカデミア - Rated: T - English - Friendship/Adventure - Chapters: 6 - Words: 6,202 - Reviews: 6 - Favs: 45 - Follows: 55 - Updated: 3/24 - Published: 3/27/2022 - C. Halsey, Shouta A./Eraserhead, 1-A Students
Halo Galactic Wars by Crimson Soldat reviews
While on a search mission within Zeta Halo, Master Chief and his new AI Companion stumbles upon an unknown site that isn't Forerunner in origins. Next thing they knew, both ends up in another Galaxy and are forced to partake in a war that they had found themselves in. With them and a few surprises, the known universe will never be the same ever again. Co-written by SomeRandomMarine
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 9 - Words: 51,647 - Reviews: 80 - Favs: 286 - Follows: 365 - Updated: 3/24 - Published: 6/30/2022 - Anakin Skywalker, Obi-Wan K., Ahsoka T., Master Chief/John-117
Perdido en la noche de los muertos by Arkanehouse
"Cuando muera entierrenme profundo por favor por que no quiero acabar como una de estas cosas" M por violencia y cualquier cosa que surja
Crossover - Halo & Highschool of the Dead - Rated: M - Spanish - Sci-Fi/Adventure - Chapters: 1 - Words: 1,316 - Favs: 1 - Follows: 1 - Published: 3/24
The Fast And The Noble by SSJ Lone Wolf reviews
A decade after being transported back to the late twentieth century following the Fall of Reach, Noble Six and Auntie Dot have worked tirelessly to uplift humanity through Noble Industries. However after encountering Mia Toretto and protecting her from a Cyberpsycho he slowly finds himself returning to a life he swore he'd never return too. Cyberpunk 2077 Elements.
Crossover - Fast and the Furious & Halo - Rated: M - English - Chapters: 1 - Words: 5,984 - Reviews: 21 - Favs: 100 - Follows: 119 - Published: 3/22 - SPARTAN-B312/Noble Six
Halo-Naruto: Helstadt's Finest by Azores
Light years away from the devastation of the Human-Covenant War, humanity attempts to set up new homes in the stars. Far from the reach of the UNSC, multiple nations have sprung up, looking to bring forward their visions for the future of humanity. This is the story of one such nation. This is Helstadt. AUTHOR'S NOTE: This is a Halo-centric side story for Halo-Naruto: Prologue.
Crossover - Halo & Naruto - Rated: M - English - Sci-Fi - Chapters: 2 - Words: 10,181 - Favs: 9 - Follows: 8 - Published: 3/22 - OC
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