Halo Crossovers
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Halo Effect by kamilospl1312 reviews
What if UNSC replace System Allience from Mass Effect
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 5 - Words: 15,941 - Reviews: 67 - Favs: 106 - Follows: 175 - Updated: 1/26 - Published: 8/12/2024
Dust and Echoes by trestwho reviews
After a successful mission, a UNSC fleet makes a random slipspace jump only to come across an uncharted system containing a sliver of humanity, one with seemingly no connection to Earth and whose natural abilities defy reason. In a galaxy full of terrifying dangers, the UNSC and Remnant must work together to defend all they know from annihilation.
Crossover - Halo & RWBY - Rated: M - English - Sci-Fi/Adventure - Chapters: 33 - Words: 417,608 - Reviews: 1531 - Favs: 1,855 - Follows: 2,008 - Updated: 1/26 - Published: 1/12/2020 - Master Chief/John-117, Arbiter, Team RWBY, Team JNPR
Galactic Warbooks by DeafeningEcho reviews
Throughout countless galaxies, civilizations have warred in the stars, clashing with their warships over endless worlds. Each of these civilizations calls their ships something different, let’s find out what those are.
Crossover - Mass Effect & Halo - Rated: K - English - Sci-Fi - Chapters: 8 - Words: 15,499 - Reviews: 2 - Favs: 2 - Follows: 4 - Published: 1/24
Sunrise, Parabellum by Hereshey reviews
With the Vinetan Campaign squared-away and Man's homeworld tucked firmly under the Nation's shoestring belt, the Invasion of Kitezh now starts in earnest. The penultimate smackdown with the Empire's regent-lords is coming and out in the void beyond the Oort, a scouting ship cashes-in its ticket to safety as the Office of Naval Intelligence fires-up its latest Forerunner toy.
Crossover - Halo & SIGNALIS - Rated: M - English - Sci-Fi/Adventure - Chapters: 5 - Words: 24,275 - Reviews: 8 - Favs: 16 - Follows: 19 - Updated: 1/23 - Published: 11/2/2024
Terminator Defiance:A New Hope by Johnnieboy11 reviews
T-Force, those that'd broken off from the Founders during the early stages of the war, helped form the Resistance. A skirmish for an old AFB near Wichita turns sour for Lieutenant Church as he and his troops are forced to engage the Wireheads, only for the unexpected to drop into their lap:A new, friendly and highly-advanced human faction seeking to help rid the world of Legion.
Crossover - Terminator & Halo - Rated: T - English - Horror/Sci-Fi - Chapters: 3 - Words: 12,289 - Reviews: 33 - Favs: 76 - Follows: 89 - Updated: 1/23 - Published: 3/18/2024 - John Connor, The Terminator, OC
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: 37 - Words: 132,303 - Reviews: 217 - Favs: 699 - Follows: 984 - Updated: 1/22 - Published: 7/8/2022 - Rookie, Shepard
War of the Hearts by World Archivist reviews
The Human-Covenant war had left an undeniable scar on the galaxy. Now in the year 2553, a new enemy shall appear, and a new war shall begin, one with origins in a time before the Halo Array.
Crossover - Halo & Kingdom Hearts - Rated: M - English - Sci-Fi - Chapters: 7 - Words: 6,283 - Reviews: 2 - Favs: 8 - Follows: 10 - Updated: 1/20 - Published: 4/19/2024
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: 33 - Words: 145,612 - Reviews: 225 - Favs: 685 - Follows: 804 - Updated: 1/20 - Published: 1/12/2021 - [Master Chief/John-117, Cortana] C. Halsey, Team RWBY
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: 7 - Words: 57,716 - Reviews: 64 - Favs: 183 - Follows: 247 - Updated: 1/19 - Published: 10/23/2024 - Master Chief/John-117, Didact, D. Anderson, Shepard
Operation: WASTELAND by Spartan-049 reviews
Whilst exploring the depths of Gamma Halo, a lone Spartan inexplicably finds himself transported to an irradiated wasteland on a planet that shouldn't have one; Earth. Looking for a way to support himself, he teams up with a local courier investigating a series of mysterious disappearances from the city of New Vegas.
Crossover - Fallout & Halo - Rated: T - English - Adventure/Western - Chapters: 7 - Words: 24,635 - Reviews: 19 - Favs: 39 - Follows: 56 - Updated: 1/19 - Published: 2/2/2024
Halo: Fallen Stars (A Halo x Warcraft Crossover) by DarkNovaExtremia reviews
2537. The UNSC tries to find a new home for humanity to settle in, one away from the Covenant's reach. An old Punic-class supercarrier was chosen to do so, but a Covenant battle group pursues her relentlessly, until a black hole ends their chase. As both sides stumble in a new universe, the question remains: Will they bring their war to Azeroth? Or will they find a new beginning?
Crossover - Warcraft & Halo - Rated: T - English - Sci-Fi/Fantasy - Chapters: 4 - Words: 30,720 - Reviews: 14 - Favs: 48 - Follows: 72 - Updated: 1/18 - Published: 6/28/2024 - Arthas Menethil, Jaina Proudmoore, Tyrande Whisperwind, OC
A Better Tomorrow by DLTA-BOT reviews
How can one man change a world ravaged by corruption, war, and poverty? And if that world isn't his own, why would he want to? In a life built out of discontent and fear, maybe the opportunity for change lies in a new place and a fresh start. A new beginning. And, maybe, he can look forward to a better tomorrow. - A companion story to Wrong Place, Right Time: A Hero's Story.
Crossover - Halo & Cyberpunk 2077 - Rated: T - English - Sci-Fi/Adventure - Chapters: 8 - Words: 76,315 - Reviews: 34 - Favs: 226 - Follows: 264 - Updated: 1/17 - Published: 4/16/2024 - OC, V, Johnny Silverhand, Rogue A.
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: 99 - Words: 568,253 - Reviews: 458 - Favs: 1,001 - Follows: 1,156 - Updated: 1/17 - Published: 9/30/2021 - [Harry P., Hermione G., Daphne G.] Master Chief/John-117
Halos, Bullets and Buckshot:The Human-Covenant War by Johnnieboy11 reviews
After discovering a strange artifact in the abandoned Abydos Desert, the girls of the Foreclosure Task Force mistakenly activate it, sending themselves to a new and alien reality, one where humanity is in the brink as an Alien Armada bears down upon her worlds and death looms ever so close to them. Their hope for survival now rests on their own skill, a little luck... And the Halos
Crossover - Halo & Blue Archive - Rated: M - English - Sci-Fi/Horror - Chapters: 6 - Words: 25,328 - Reviews: 24 - Favs: 127 - Follows: 163 - Updated: 1/16 - Published: 2/15/2024 - Master Chief/John-117, A. J. Johnson, SPARTAN-B312/Noble Six, OC
The Last Metroid by Two Dudes and a Dream reviews
Her Metroid DNA took over, resulting in a monstrous transformation. Unable to control her powers, when escaping ZDR, her ship loses power. She can't remember what happened after that, but now, all she sees is the blackness of space, left drifting, alone. In the distance, the broken body of a frigate is seen, with the name of Forward Unto Dawn… Eventual Samus X Master Chief romance.
Crossover - Metroid & Halo - Rated: M - English - Sci-Fi/Drama - Chapters: 51 - Words: 229,729 - Reviews: 500 - Favs: 552 - Follows: 678 - Updated: 1/16 - Published: 9/20/2022 - Samus A., Adam, Master Chief/John-117, Cortana
UNSC Rise of the Tau'ri (English Version) by Kagaho0 reviews
When the spirit of fire fled the world of Trove, they did not expect that an improbable event would upset their future and that of the inhabitants of Earth. The survival of humanity could well depend on their decision.
Crossover - Stargate: SG-1 & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 6 - Words: 61,702 - Reviews: 12 - Favs: 43 - Follows: 64 - Published: 1/15 - S. Carter, J. O'Neill, J. Cutter, E. Anders
Gundam Freedom: Richard's Journey by HispanicBriton3876 reviews
[AAU, OCC characters] Rescued from near death and subsequently adopted at the age of 10 by a Dominion officer, a boy from Earth is thrown into a world of giant machines called Mobile Suits. Discarding his old name and given a powerful mobile suit, he will experience family, friendship, and war as he grows. This is the life of a mobile suit pilot named, Richard Walker.
Crossover - Halo & Naruto - Rated: M - English - Adventure/Sci-Fi - Chapters: 2 - Words: 6,243 - Reviews: 3 - Favs: 5 - Follows: 6 - Published: 1/14 - OC, Naruto U.
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: 36 - Words: 148,218 - Reviews: 254 - Favs: 922 - Follows: 1,123 - Updated: 1/13 - Published: 3/23/2023 - Anakin Skywalker, Ahsoka T., Master Chief/John-117, T. Lasky
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: 62 - Words: 257,412 - Reviews: 578 - Favs: 741 - Follows: 902 - Updated: 1/12 - Published: 11/29/2022 - Master Chief/John-117, Cortana, Commander, Rapi
Halo: Spiraling Conflict by Legend of Flashfox reviews
Toking from a young age, he was made to be the Ultimate Spartan before he was released to do what he wants. With a new lease on life, Naruto has no idea what to do with his life except for what he was trained to do. Will he embrace this new freedom or is this all a trap? In Haloverse with Naruto char. New species and factions. Chakra with tech blend. Narutox?
Crossover - Halo & Naruto - Rated: M - English - Chapters: 4 - Words: 9,069 - Reviews: 18 - Favs: 63 - Follows: 74 - Updated: 1/12 - Published: 7/20/2023 - C. Halsey, Naruto U., Kyuubi/Kurama, Danzō S.
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: 73 - Words: 162,777 - Reviews: 300 - Favs: 460 - Follows: 525 - Updated: 1/12 - Published: 1/10/2022 - C. Halsey, Naruto U.
Halo: Shattered Fate by NightReadings.17 reviews
The Human Order Incineration Incident, the crisis that Chaldea has to resolve in order to restore mankind. Heroes had been summoned in an effort to assist in their endeavor, both from the past, as well as one from the future.
Crossover - Halo & Fate/stay night - Rated: M - English - Adventure/Fantasy - Chapters: 12 - Words: 88,619 - Reviews: 128 - Favs: 301 - Follows: 428 - Updated: 1/12 - Published: 7/26/2024 - Master Chief/John-117, Mashu/Shielder, Ritsuka F.
Touhou: Illusionary World and the Ghost of Reach by The Mighty Soryuz reviews
A Spartan never goes quietly into the howling dark to never return, left on the dying planet Reach a Lone Wolf will make peace with his life, and be put into the chance of a new life. Boundaries rift open and a Ghost drifts among Youkai, now to find his new place in a Fantastical Land of Status-Quo. His arrival may herald a new coming incident, but his abilities will prove vital.
Crossover - Halo & Touhou Project - Rated: M - English - Supernatural/Romance - Chapters: 3 - Words: 11,559 - Reviews: 6 - Favs: 29 - Follows: 44 - Updated: 1/12 - Published: 4/11/2024 - SPARTAN-B312/Noble Six, Marisa K., Reimu H.
Halo: Dark Stars-On Eternal Patrol by Ash Maelstrom reviews
AU/FUSION FIC. Sidestory. A colony that was spared destruction at the hands of the Covenant has become the backdrop for something unbelievable. Now a motley assortment of colonists and outsiders may finally have an answer to the question of what exactly happened over Vodin in 2532. Now with a Covenant ship class primer on chapter 8
Crossover - Halo & Kantai Collection - Rated: T - English - Sci-Fi/Adventure - Chapters: 8 - Words: 48,759 - Reviews: 3 - Favs: 9 - Follows: 11 - Updated: 1/11 - Published: 11/28/2024 - Complete
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: 4 - Words: 32,706 - Reviews: 72 - Favs: 301 - Follows: 426 - Updated: 1/11 - Published: 11/28/2022 - SPARTAN-B312/Noble Six
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