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Halo wars by Julian 10 reviews
when the Ark explodes at the end of Halo 3 it send Chief, Cortana and Arbiter to a galaxy far far away. What new threats will they face in the clone wars. (Chief X Bo Katan)
Crossover - Halo & Star Wars: The Clone Wars - Rated: T - English - Adventure/Sci-Fi - Chapters: 5 - Words: 61,511 - Reviews: 58 - Favs: 189 - Follows: 242 - Updated: 2/6 - Published: 12/3/2021 - Master Chief/John-117, Cortana, Ahsoka T., Anakin S.
Digimon War Game S2 by riven-del reviews
The Halo has been destroyed, but the Covenant have a new objective: Earth. Cassandra will have her work cut out for her as she helps the Pillar of Autumn's crew stall the enemy and more Tamers with crests show up.
Crossover - Digimon & Halo - Rated: T - English - Adventure/Sci-Fi - Chapters: 9 - Words: 11,208 - Reviews: 2 - Favs: 7 - Follows: 6 - Updated: 2/6 - Published: 9/2/2022 - OC, Herissmon, Master Chief/John-117, Fred-104
Un grand angle d'ombre by blackshamrock333 reviews
2560. L'humanité a survécu à la grande guerre contre les covenants et découvert l'espace concilien. Le Longest Day, prowler de l'UNSC en mission secrète, débarque en pleine attaque d'une colonie frontalière. Quelques jours plus tard, un médecin humain est découvert assassiné sur la Citadelle. Deux événements aléatoires, annonciateurs d'une course pour sauver la galaxie.
Crossover - Halo & Mass Effect - Rated: T - French - Sci-Fi/Adventure - Chapters: 2 - Words: 26,032 - Reviews: 2 - Favs: 6 - Follows: 8 - Updated: 2/6 - Published: 1/27
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 its various first contacts.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 1 - Words: 7,663 - Reviews: 8 - Favs: 38 - Follows: 61 - Published: 2/6
War of the Old Ones by Ian the Mechanic reviews
In forgotten ages past, two near eldritch forces vied for the very life essence of the Galaxy. Unknown to the young races, that war is still ongoing. how can the UNSC, the Citadel Council or the Covenant hope to stand against such forces, when they are still embroiled in their own petty squabbling? How could they hope to survive the War of the Old Ones?
Crossover - Mass Effect & Halo - Rated: M - English - Sci-Fi/Horror - Chapters: 16 - Words: 85,802 - Reviews: 97 - Favs: 197 - Follows: 293 - Updated: 2/6 - Published: 2/21/2022
The Mantle of Remnant by KtyouVsWriting reviews
The Master Chief has saved Humanity at the cost of Cortana, one of his few remaining friends. More than he will admit, John relied on her, cared for her. To no longer have her means to lose another part of his humanity. Still the universe keeps going and once again, he is called to serve and protect Mankind. Now he has a choice: does he brave Remnant alone or does he embrace help?
Crossover - Halo & RWBY - Rated: M - English - Adventure/Friendship - Chapters: 23 - Words: 128,774 - Reviews: 614 - Favs: 1,357 - Follows: 1,772 - Updated: 2/5 - Published: 5/16/2019 - Master Chief/John-117
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: 67 - Words: 315,929 - Reviews: 214 - Favs: 551 - Follows: 669 - Updated: 2/5 - Published: 9/30/2021 - [Harry P., Hermione G., Daphne G.] Master Chief/John-117
For All Mankind by Cypher1597 reviews
Raava is the spirit of light and peace. Vaatu is the harbinger of darkness and chaos. Their war has left this planet scarred and the Avatar cannot be expected to stand against the darkness alone. An agent of order is needed to tip the scales and Raava has found her herald amongst the stars. A hunter that walks the shadows in service to the light. The world will never be the same.
Crossover - Halo & Legend of Korra - Rated: M - English - Suspense - Chapters: 6 - Words: 26,143 - Reviews: 60 - Favs: 180 - Follows: 247 - Updated: 2/5 - Published: 6/3/2022 - OC, Korra
La nueva era de la humanidad, Libro 1 Invasiones by Type-universe
El gran Reich renacido de las cenizas después de la guerra Humano-Covenant, unificará a la humanidad a través del multiverso con la intención de unificar a toda la humanidad a través del multiverso, a cualquier costo que sea necesario
Crossover - Halo & Arifureta Shokugyou de Sekaisaikyou/ありふれた職業で世界最強 - Rated: M - Spanish - Sci-Fi/Fantasy - Chapters: 2 - Words: 12,386 - Updated: 2/4 - Published: 2/1 - N. Hajime, H. Shea, C. Tio, Lilianna S. B. Heilig
Final Frontier by Richard Scepton reviews
Fidel Et Spe, that was what we were taught. Per Aspera, Ad Astra, that was what we belived in. And yet, as we engrave such thoughts and memories into our hearts and mind, there will always be those who wish for us to fail. However, no matter what, we will push forward, for we bear humanity's fate in our hands. Therefore, we will advance without falter.
Crossover - Halo & Kantai Collection - Rated: T - English - Sci-Fi/Hurt/Comfort - Chapters: 11 - Words: 97,773 - Reviews: 23 - Favs: 68 - Follows: 91 - Updated: 2/4 - Published: 6/5/2021 - Shigure, Kaga, Fubuki, Amatsukaze
Remnants Of The Spartans by ApexRainbow163 reviews
Two Spartans have arrived in Remnant under mysterious circumstances. But the world they've arrived in yields even more mystery than that of their arrival. Join them as they uncover it's secrets, earn some enemies and find allies, new and familiar. (Part 1 of the Yeartide Saga)
Crossover - Halo & RWBY - Rated: T - English - Fantasy/Sci-Fi - Chapters: 18 - Words: 52,363 - Reviews: 15 - Favs: 81 - Follows: 101 - Updated: 2/3 - Published: 6/29/2020 - OC, Glynda G., Team RWBY
Star Wars: Parasites by SPARTAN-117-2 reviews
The Death Star recovers from the recent Rebel attack, and the Master Chief fights his way through the Flood-infested High Charity, when High Charity performs an emergency Slipspace jump. Where they end up is not what anyone expected.
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi/Suspense - Chapters: 1 - Words: 1,402 - Reviews: 3 - Favs: 7 - Follows: 12 - Published: 2/3
Summoned From The Stars by ProfessorZooms reviews
One day, visitors from the stars came to our world...
Crossover - Halo & Japan Summons/日本国召喚 - Rated: M - English - Sci-Fi/Fantasy - Chapters: 1 - Words: 5,630 - Reviews: 9 - Favs: 29 - Follows: 46 - Published: 2/3
The restoration of the UNSC by Warwolff2003 reviews
Reach has Fallen and the newly promoted Captain Jacob Keyes has taken his small fleet and st course for Earth. However, this is not the Earth those in the UNSC remember. This is my version of a similar story by originally by Samsara Sage which was adopted by Ultimate Deathsaurer 2
Crossover - Stargate: SG-1 & Halo - Rated: T - English - Sci-Fi - Chapters: 10 - Words: 19,229 - Reviews: 53 - Favs: 112 - Follows: 183 - Updated: 2/3 - Published: 12/22/2022 - S. Carter, J. O'Neill, Master Chief/John-117, J. Keyes
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: 15 - Words: 150,713 - Reviews: 289 - Favs: 418 - Follows: 503 - Updated: 2/2 - Published: 3/10/2019 - Fox M., Krystal, Miyu, SPARTAN-B312/Noble Six
HaloBT: Lost in Space - Side Stories by Helezhelm reviews
It is continuation of the original fanfiction crossover, BT/Halo: Lost in Space, as it's for all side stories written by other authors in Spacebattles Forums site to avoid any confusions in case based on their feedbacks. Enjoy!
Crossover - Mechwarrior/Battletech & Halo - Rated: M - English - Chapters: 33 - Words: 34,409 - Reviews: 4 - Favs: 25 - Follows: 28 - Updated: 2/1 - Published: 1/14
GATE x HALO: The Gate of Reach by SimplyLaggy reviews
A mysterious Gate opens on Hood Street, Reach. The USSC Counterattacks. What will happen as the JSDF Comes through? ( AU)
Crossover - Halo & Gate - Jietai Kare no Chi nite, Kaku Tatakeri - Rated: T - English - Sci-Fi - Chapters: 4 - Words: 4,890 - Reviews: 12 - Favs: 35 - Follows: 48 - Updated: 2/1 - Published: 1/31 - OC
The Furious Wolf by SSJ Lone Wolf reviews
Years after the Fall of Reach, Noble Six and Auntie Dot find themselves transported back to the early twenty-first century. But when everyone's favourite Lone Wolf crosses paths with Dominic and Mia Toretto, he finds himself becoming apart of their family regardless if he wants to or not. But the question remains, but the end what will remain...man or machine?
Crossover - Fast and the Furious & Halo - Rated: M - English - Chapters: 13 - Words: 83,742 - Reviews: 414 - Favs: 725 - Follows: 798 - Updated: 1/31 - Published: 10/27/2021 - [SPARTAN-B312/Noble Six, Mia]
United Earths Empire Rewrite by Destarien reviews
What if three Universes once separate come together? three different humanities with three different paths of technology merge into one galaxy. Citadel space will never be the same because the Schahl Empire and UNSC are here. Two Civilizations, one at war and one ready for war.
Crossover - Halo & Mass Effect - Rated: M - English - Adventure/Fantasy - Chapters: 2 - Words: 11,294 - Reviews: 12 - Favs: 101 - Follows: 120 - Updated: 1/31 - Published: 1/5
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: 3 - Words: 22,366 - Reviews: 16 - Favs: 23 - Follows: 29 - Updated: 1/31 - Published: 11/9/2022 - Marcus F., Dominic S., A. Cole, D. Baird
Always Be a Good Boy by Anquietas reviews
The Mantle of Responsibility is for the protection of all, in all realities, even if Reclaimers are not yet aware of the responsibility they must endure
Crossover - Halo & A song of Ice and Fire - Rated: M - English - Adventure/Sci-Fi - Chapters: 3 - Words: 4,583 - Reviews: 6 - Favs: 8 - Follows: 19 - Updated: 1/31 - Published: 1/27
Glassing of Mordor by Dush the Douche reviews
A Sangheili exile is mysteriously brought into the realm of Middle-Earth, specifically Mordor.
Crossover - Lord of the Rings & Halo - Rated: T - English - Fantasy/Mystery - Chapters: 2 - Words: 3,413 - Reviews: 3 - Favs: 16 - Follows: 20 - Updated: 1/31 - Published: 10/6/2021
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: 11 - Words: 93,284 - Reviews: 135 - Favs: 304 - Follows: 385 - Updated: 1/30 - Published: 4/17/2022 - Clark K./Kal-El/Superman, Master Chief/John-117
Recommissioned by In BRRRRRRT We Trust reviews
Her extraction had failed. As the needles pierced her armor, she thought of her family; her brothers and sisters. It took a long time to see them as more than other conscripts, but she eventually found her way. Laying on the landing platform should have been her end, yet death had other ideas. Opening her eyes to another world, will Daisy - 023 survive this new onslaught?
Crossover - Halo & Last of Us - Rated: M - English - Chapters: 8 - Words: 43,747 - Reviews: 52 - Favs: 85 - Follows: 119 - Updated: 1/30 - Published: 7/29/2021 - Ellie, Joel
Libera Terra by Johnnieboy11 reviews
Since the Black Mesa Incident and Seven Hour War, the Combine became the undisputed masters of Earth and the remnants of Humanity lived in fear within dystopian cityscapes. The few who live beyond the borders of the decaying cities are the Resistance, a small, almost harmless group to the War Machine of the Combine. That is all set to change, as new variables come to assist mankind
Crossover - Half-Life & Halo - Rated: T - English - Sci-Fi/Horror - Chapters: 4 - Words: 14,043 - Reviews: 15 - Favs: 35 - Follows: 51 - Published: 1/30 - G-Man, Gordon F., Master Chief/John-117, Cortana
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