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Alpha Nine to Copper Nine by CambrianSun reviews
2552. Humanity is at war with an alien alliance known as 'The Covenant' We are losing. In an attempt to assault the carrier of one of the Covenant's leadership. The carrier jumps into slipspace above New Mombasa. Those whom survive the blast find themselves on a new, dangerous, frozen world.
Crossover - Halo & Murder Drones - Rated: M - English - Sci-Fi/Horror - Chapters: 11 - Words: 41,108 - Reviews: 16 - Favs: 41 - Follows: 59 - Updated: 3h - Published: 8/25/2024
Homefront by Cipher32 reviews
For what is a child if not innocent, and what is a man if not sinful? A vessel of hate, unbridled and pure. And we are the best of teachers to our child.
Crossover - Halo & Girls' Frontline/少女前线 - Rated: M - English - Sci-Fi/Drama - Chapters: 4 - Words: 41,328 - Reviews: 4 - Favs: 32 - Follows: 44 - Updated: 7h - Published: 2/9 - Griffin Commander, M4 SOPMOD II, RO635, OC
Alexander Harris, Spartan-01 by jeremyathomas44 reviews
a different take on the costume mishap on that fateful Halloween.
Crossover - Buffy: The Vampire Slayer & Halo - Rated: M - English - Chapters: 2 - Words: 26,161 - Reviews: 5 - Favs: 13 - Follows: 11 - Updated: 10h - Published: 4/1
We're Just People by TheFlawlessCowboy reviews
What if Master Chief and Cortana had a child. What if that child was named Jane Shepard. What if the UNSC and Turians didn't have a hostile first-contact. Pre first-contact to (hopefully) post Me-3. Pray for me ya'll this one's ambitious.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 2 - Words: 7,281 - Reviews: 11 - Favs: 29 - Follows: 36 - Updated: 17h - Published: 4/6 - Master Chief/John-117, Arbiter, Linda-058, Shepard
Battlestar UNSC by StarDude117 reviews
Reach is under attack when the orders come down the line for all UNSC assets to rally at Reach in defense for the last bastion before Earth Task force Midway's Survivors answer the call however unknown to them in a different dimension the Twelve colonies of Kobol are under attack and they are losing see how the sudden appearance of a small UNSC task force changes things better
Crossover - Halo & Battlestar Galactica: 2003 - Rated: T - English - Sci-Fi/Adventure - Chapters: 66 - Words: 111,464 - Reviews: 231 - Favs: 138 - Follows: 209 - Updated: 18h - Published: 10/18/2024 - OC, W. Adama, S. Tigh, Gaeta
HALO: Crossing Paths by Connor Winters reviews
I have recently re-watched star Trek ds9 and had a thought of how the story change if instead of the federation, it was the unsc.
Crossover - StarTrek: Deep Space Nine & Halo - Rated: M - English - Sci-Fi/Adventure - Chapters: 2 - Words: 2,746 - Reviews: 6 - Favs: 6 - Follows: 10 - Updated: 19h - Published: 4/3
ARES:The Gods of War by Johnnieboy11 reviews
Mankind's Greatest Hero has finished his mission once more. Saving Earth from the Didact and his weapon of mass-recruitment, the Composer, the Master Chief and his AI companion, Cortana, find themselves mysteriously transported to a strange variation of Earth, where machines rule the surface and mankind hides below. The SPARTAN and those that join will fight to Reclaim the world...
Crossover - Halo & Goddess of Victory: Nikke - Rated: T - English - Adventure/Sci-Fi - Chapters: 66 - Words: 281,248 - Reviews: 593 - Favs: 761 - Follows: 926 - Updated: 4/9 - Published: 11/29/2022 - Master Chief/John-117, Cortana, Commander, Rapi
Book One: Harvest by Believer218 reviews
The year is 2583. Humanity stands strong, even twenty-six years after a disastrous first contact. But it seems that wherever they go, war will follow. And this war will grip the galaxy like no other. The first adventure of Mass Effect: The Reclaimer Saga. Rated M for graphic depictions of violence.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 9 - Words: 38,924 - Reviews: 125 - Favs: 136 - Follows: 195 - Updated: 4/9 - Published: 4/4/2024 - [Master Chief/John-117, Ashley W.] Arbiter, Saren A.
Master Chief in Remnant by Dark-Lightning XI reviews
Master Chief finds something in a strange world full of even strange new enemies called the Grimm. To make his adventure even more bizarre, he meets four teenage girls. One who won't stop fangirling. One who stop making bad puns and jokes. One who can't chill for a second and the last one...Blake being Blake.
Crossover - Halo & RWBY - Rated: K+ - English - Humor/Adventure - Chapters: 1 - Words: 2,389 - Reviews: 4 - Favs: 11 - Follows: 13 - Published: 4/9 - Master Chief/John-117, Team RWBY
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, ancient secrets will reveal not all is as it seems.
Crossover - Halo & Naruto - Rated: T - English - Adventure/Sci-Fi - Chapters: 8 - Words: 40,069 - Reviews: 158 - Favs: 432 - Follows: 545 - Updated: 4/9 - Published: 11/30/2016 - Master Chief/John-117, Cortana, Naruto U.
Halo: Dark Stars 2-There'll be another time by Ash Maelstrom reviews
AU/FUSION FIC. Part 2 of a series! After a harrowing incident at Capella, local UNSC forces and their strange new guests are left struggling to pick up the pieces as a relief force heads over. But events elsewhere are already moving too quickly, and soon another band of unlikely heroes will learn that nothing, no matter how legendary, is truly out of reach…
Crossover - Halo & Kantai Collection - Rated: T - English - Sci-Fi/Horror - Chapters: 7 - Words: 41,937 - Reviews: 3 - Favs: 6 - Follows: 8 - Updated: 4/9 - Published: 3/10 - M. Stanforth
HALO: Galactic Incursion by floodproof07 reviews
/First contact with an entity known as the Galactic Empire on our outer colony world of Charis proves hostile. Their colonization attempts have threated UNSC and Second Covenant citizens. The solution? Reclaim the Halo, enter Andromeda breach, and strike back. OPERATION: GALACTIC INCURSION./ 2561 - New Hope.
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 5 - Words: 23,073 - Reviews: 79 - Favs: 275 - Follows: 371 - Updated: 4/8 - Published: 10/16/2023 - Master Chief/John-117, Arbiter, Gravemind, OC
Operation: WASTELAND by Spartan-049 reviews
Stranded in a radioactive wasteland, a lone Spartan enters into a partnership with a courier he rescued from a shallow grave outside the small town of Goodsprings to track down the men that shot him, and the package they stole, even if it means travelling across the entirety of the Mojave.
Crossover - Fallout & Halo - Rated: T - English - Adventure/Western - Chapters: 2 - Words: 6,813 - Reviews: 4 - Favs: 5 - Follows: 11 - Updated: 4/8 - Published: 4/4
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.
Crossover - Halo & Mass Effect - Rated: T - English - Drama/Sci-Fi - Chapters: 15 - Words: 170,013 - Reviews: 632 - Favs: 1,709 - Follows: 2,240 - Updated: 4/8 - Published: 2/11/2023 - Cortana, Councilor Valern, Councilor Tevos, Councilor Sparatus
Unto the Starfield by Helljumper206 reviews
The war is over, but their story isn't. When the portal collapsed it didn't just send the back half of the Forward Unto Dawn into deep space, but to a different kind of starfield with system factions filled with contradicting hypocrisy. "M for harsh language, violence, and grown-up content."
Crossover - Halo & Starfield - Rated: M - English - Sci-Fi - Chapters: 3 - Words: 13,474 - Reviews: 15 - Favs: 39 - Follows: 58 - Updated: 4/7 - Published: 3/13 - Master Chief/John-117, Cortana
Halo: Universal Vortex by Legend of Flashfox reviews
With the rush of the firing of the rings errors occurred. More species come into play and humanity no longer started on Earth alone. The planet Elemental is here with humans who are different from Earth. Now Naruto needs to navigate this war torn galaxy. Alive preferably. Pairings maybe Harem. NarutoXHalo world merged with bits of others like Star Wars and Mass Effect. Maybe more.
Crossover - Halo & Naruto - Rated: M - English - Chapters: 75 - Words: 166,809 - Reviews: 304 - Favs: 476 - Follows: 540 - Updated: 4/6 - Published: 1/10/2022 - C. Halsey, Naruto U.
Into the Howling Dark by long night of solace reviews
Hundreds of millions of years ago, Humanity, Forerunners and the SanShyuum, the tier-1 species protected the galaxy. But the peace never lasted as the threat of flood and the reapers brought the Milkyway to the edge of extinction. Now the warriors of the past needs to guide the future galaxy and stop history from repeating itself.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 10 - Words: 92,962 - Reviews: 124 - Favs: 239 - Follows: 319 - Updated: 4/6 - Published: 10/23/2024 - Master Chief/John-117, Didact, D. Anderson, Shepard
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: 100 - Words: 583,680 - Reviews: 468 - Favs: 1,022 - Follows: 1,181 - Updated: 4/5 - Published: 9/30/2021 - [Harry P., Hermione G., Daphne G.] Master Chief/John-117
Halo Gundam by 6-4 pilot reviews
Stuck in the Universal Century during the One Year War, Master Chief and his companions help the White Base Crew survive while also trying to find a way back to Zeta Halo. In the meantime, a group of battle-hardened Banished troops does what their organization does best. Take advantage of conflicts and various organizations for their own benefit. (Also includes Owl House)
Crossover - Halo & Gundam UC - Rated: M - English - Sci-Fi - Chapters: 36 - Words: 132,677 - Reviews: 226 - Favs: 164 - Follows: 191 - Updated: 4/5 - Published: 6/22/2022 - Master Chief/John-117, Amuro R.
Halo: Iron Kingdoms by jjimenez042v reviews
After the final battle of the ark, The Master Chief and Cortana found themselves on planet that mix steam-power technology with magic as great kingdoms fight each other supremacy. Force to adapt this new world they must forge alliance with unlikely people while dealing with strange enemies while they look for way home.
Crossover - Halo & Warmachine - Rated: M - English - Adventure/Sci-Fi - Chapters: 3 - Words: 18,193 - Reviews: 10 - Favs: 18 - Follows: 25 - Updated: 4/4 - Published: 3/16/2024
Merged Stars by Lord of the Wall reviews
Through unknown forces of immense and unimaginable power, two galaxies merge and superpowers of both galaxies is forced to deal with the reality of the broken status quo. Jane Shepard, first human Spectre, finds herself in the center of the events to come. This is a 3-way crossover between the forementioned ME and Halo universes as well as Stargate. Knowledge of all are not needed.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Family - Chapters: 4 - Words: 24,049 - Reviews: 25 - Favs: 102 - Follows: 132 - Updated: 4/4 - Published: 3/20 - Master Chief/John-117, T. Hood, Atriox, Shepard
The Shinju Project by Orion1227 reviews
So I was listening to a Halo lore video and learned something new, everyone knows that Halo is heavily religious in theme. But what I learned is the main religion that the series is based after is Hinduism which is the basisof the Naruto universe… so yeah… enjoy this shit show.
Crossover - Naruto & Halo - Rated: M - English - Adventure/Sci-Fi - Chapters: 5 - Words: 12,791 - Reviews: 21 - Favs: 24 - Follows: 37 - Updated: 4/4 - Published: 12/16/2024 - Naruto U.
Never Forgotten by AlexisStormborn reviews
A long time ago, I met a man, a man that knew no fear. Even before my legions were released to conquer the stars, this man saved our kind from certain doom. Now, this man is the last hope of us once again. Rise, Spartan John, son of Eridanus, your duty is not yet done.
Crossover - Warhammer & Halo - Rated: M - English - Sci-Fi/Fantasy - Chapters: 2 - Words: 18,425 - Reviews: 19 - Favs: 60 - Follows: 76 - Updated: 4/3 - Published: 3/31 - The Emperor, Master Chief/John-117, Space Marines, Jerome-092
HALO-STARGATE: All the Stars in the Sky: Book I by Spartan-076A reviews
The UNSC will have to navigate a galaxy poised to rip itself apart between the ambitions of the System Lords and the scheming of the San'Shyuum Hierarchs. Will humanity triumph and rise victorious from these trials, or will it fall by the hands of its enemies? Only time will tell.
Crossover - Stargate: SG-1 & Halo - Rated: M - English - Sci-Fi - Chapters: 5 - Words: 24,825 - Reviews: 17 - Favs: 54 - Follows: 79 - Updated: 4/1 - Published: 8/1/2024 - S. Carter, Gen. Hammond, J. O'Neill, Master Chief/John-117
Acta Belli: A Journal of War by F35B reviews
A Chronicle to Bellum Terranum. Archives and lists the stories of those who suffered the conflict known as Bellum Terranum. From the Invasion of Strangreal to the Battle over Coruscant.
Crossover - Star Wars & Halo - Rated: T - English - Adventure/Sci-Fi - Chapters: 5 - Words: 13,312 - Reviews: 28 - Favs: 44 - Follows: 58 - Updated: 4/1 - Published: 3/20
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