Halo Crossovers
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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: 5 - Words: 8,372 - Reviews: 15 - Favs: 43 - Follows: 54 - Updated: 2/17 - Published: 1/31 - OC
Halo-Naruto: Prologue by Azores reviews
Following Psi Serpentis, the fleeing UNSC Everest finds itself in a star system far from the war or the UEG. Teaming up with the Admiral's old flame from the URF and various other elements fleeing the war, the UNSC finds a world, unlike anything they have ever seen before, while on that same world its inhabitants will have their lives changed forever. AU for both Universe. PROLOGUE
Crossover - Halo & Naruto - Rated: M - English - Sci-Fi - Chapters: 17 - Words: 254,203 - Reviews: 160 - Favs: 296 - Follows: 335 - Updated: 2/16 - Published: 5/7/2015 - P. Cole, OC, Kushina U., OC
Operation Terra Sunrise HALO ( AU) x ME ( AU) by SimplyLaggy reviews
The Endless Swarm, known as the Reapers. Mostly defeated by the forerunners, yet after the death of almost all forerunners, they return. Now, the Reclaimers face them. Join Rebecca Shepard, a OMI Long-term undercover operative, as she goes undercover as Jane Shepard on Terra, Systems Alliance Earth, which was made by Ancient Humanity, as a ancient human remnant AI watches.
Crossover - Halo & Mass Effect - Rated: T - English - Chapters: 2 - Words: 4,521 - Reviews: 7 - Favs: 36 - Follows: 55 - Updated: 2/16 - Published: 2/9 - Illusive Man, Shepard
House of Reclamation by Mend1cant Bias reviews
Death was truly never the end. Being born to a legendary, advance race was part of the equation. Yet it was never part of the equation to end up in a alternate universe, stranded with a handful of ships and their crew to survive in a world where light and dark clash in over the Universe. Dead people rising, Space Romans, scavenger pirate aliens, Time travel robots? Yeah, classic.
Crossover - Halo & Destiny - Rated: M - English - Sci-Fi/Adventure - Chapters: 1 - Words: 2,389 - Reviews: 8 - Favs: 18 - Follows: 23 - Published: 2/16 - Gravemind, OC, Fallen, Guardian
The Rook by Twisted Fate MK 2 reviews
On the way down to New Mombasa, Rookie falls into the Slipspace Rupture and ends up crashing down on Menae, high above Palaven, right in the midst of the Reaper War. From there, the war itself will shift and the fighting persists, but who knows what an ODST will add to the mix. (Redo of an older story)
Crossover - Halo & Mass Effect - Rated: M - English - Adventure - Chapters: 10 - Words: 36,153 - Reviews: 83 - Favs: 331 - Follows: 499 - Updated: 2/16 - Published: 7/8/2022 - Rookie, Shepard
The Guiding Fire by UNSC indomitable reviews
A Commander striped of authority. The world divide and falling. Last fading light. Hope lays in Spirit and might. As those with the fire lay dying. All must stand fast in the face howling night.
Crossover - Halo & Azur Lane/碧蓝航线 - Rated: T - English - Sci-Fi/Adventure - Chapters: 12 - Words: 85,187 - Reviews: 81 - Favs: 174 - Follows: 240 - Updated: 2/15 - Published: 7/22/2020 - J. Cutter, Belfast, OC
The Noble Wolf of Earth by Slim A Lou Prime reviews
Noble Six was fighting the inevitable, he knew he would die on Reach. Yet he was not going to make it easy for covenant. Turns out killing him was outside their ground forces abilities. So they sent a cruiser glass him. That ship only managed to trap him before a flying forerunner monitor decided to set him lose on another galaxy. Maybe he wasn't meant to die on Reach.
Crossover - Stargate: SG-1 & Halo - Rated: M - English - Sci-Fi/Adventure - Chapters: 3 - Words: 26,823 - Reviews: 44 - Favs: 175 - Follows: 269 - Updated: 2/11 - Published: 11/28/2022 - SPARTAN-B312/Noble Six
A Better Tomorrow by jak3combat reviews
Helljumpers. Little Imps. Or just ODSTs. It doesn't matter what they're called, they're some of the best units in the entire UNSC, aside from the remaining SPARTANs. They've gone through rigorous trials to get to where they are today. Over New Mombasa, this group of Helljumpers don't quite make it to the ground. Instead, they arrive somewhere none of them can quite identify...
Crossover - My Little Pony & Halo - Rated: T - English - Adventure/Sci-Fi - Chapters: 2 - Words: 3,129 - Reviews: 8 - Favs: 21 - Follows: 27 - Updated: 2/11 - Published: 5/25/2018
Serenity by Space-Dweeb reviews
2542. Humanity lost the war against the Covenant, and has been assimilated into the galaxy-spanning conglomerate. John-117 and his crew, formerly humanity's greatest champions, were forced into a life of crime in order to survive. Aboard the Firefly-class ship Serenity, they travel the galaxy with one mission: get a ship, get a crew, keep flying.
Crossover - Halo & Firefly - Rated: T - English - Sci-Fi/Western - Chapters: 9 - Words: 38,188 - Reviews: 7 - Favs: 17 - Follows: 28 - Updated: 2/10 - Published: 8/14/2022 - [Master Chief/John-117, Cortana] [Fred-104, Kelly-087]
Drop into Hell by Lighting wolf knight
They have a lot more to do before its done. Rated T for violence, death, and profanity.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Romance - Chapters: 2 - Words: 5,426 - Favs: 11 - Follows: 16 - Updated: 2/10 - Published: 2/3 - Miranda K., OC, Admiral Hackett, Shepard
United Freedom by F35B reviews
Join the USTG and its many service members in a fight against the Republic to free the Milky Way from Andromedan Influence and liberate the CIS from its puppet strings. First Story, please R&R would appreciate it greatly, (Edit 2/10/22) PM me any plot suggestions you may have and I am taking weapon suggestions as well through reviews and PM.
Crossover - Star Wars & Halo - Rated: M - English - Sci-Fi - Chapters: 9 - Words: 40,226 - Reviews: 32 - Favs: 71 - Follows: 92 - Updated: 2/10 - Published: 1/3 - OC
The wolf of the hunter by Lighting wolf knight reviews
Hunters of all shades find a home. Rated t for violence, death, and profanity.
Crossover - Warhammer & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 2 - Words: 7,502 - Reviews: 1 - Favs: 5 - Follows: 8 - Updated: 2/9 - Published: 1/20 - Space Marines, OC, Master Chief/John-117, Linda-058
The USSC: A Timeline by SimplyLaggy reviews
A timeline of my USSC fanfic base, and a smol teaser to two upcoming fics
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 1 - Words: 1,615 - Reviews: 2 - Favs: 8 - Follows: 9 - Published: 2/8
Lost Son of Terra Phoenix by Ares007 reviews
For eons past, they enjoyed the harvest of their farms. Countless civilizations breathed life because they allowed it. Now, they will die because he demands it. Halo/Mass Effect but with heavy elements from Warhammer 40k. M-Shep/Miranda, OC/Liara. HFY
Crossover - Halo & Mass Effect - Rated: M - English - Adventure/Romance - Chapters: 16 - Words: 116,869 - Reviews: 47 - Favs: 158 - Follows: 204 - Updated: 2/8 - Published: 11/29/2021 - [SPARTAN-B312/Noble Six, Oriana L.]
Sekirei: The Lost Wolf by Helghast honored guard reviews
The Lonewolf survived and made it off Reach .Now he finds himself trapped in another world, another time and another conflict. Up against a madman forcing a race of super powered aliens to fight to the death to bring a new age of the gods . (Six and Harem)
Crossover - Halo & Sekirei - Rated: M - English - Sci-Fi/Romance - Chapters: 13 - Words: 87,337 - Reviews: 92 - Favs: 261 - Follows: 346 - Updated: 2/7 - Published: 3/2/2022 - SPARTAN-B312/Noble Six, No. 12/Hibiki, No. 11/Hikari, No. 16/Toyotama
HALO x ME: The Relay by SimplyLaggy reviews
The Intergalactic Relay. It exists, to change everything, by a bored observer.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 1 - Words: 4,456 - Reviews: 6 - Favs: 27 - Follows: 36 - Published: 2/6
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: 59 - Favs: 197 - Follows: 246 - 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: 7,667 - Reviews: 11 - Favs: 48 - Follows: 73 - 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: 98 - Favs: 200 - Follows: 296 - 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: 615 - Favs: 1,365 - Follows: 1,778 - Updated: 2/5 - Published: 5/16/2019 - 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: 184 - Follows: 256 - 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
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