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BattleTech: Combat Evolved - Definitive Edition by IX404 reviews
We all know the tale. The SLDF under Aleksandr Kerensky's command leaves the Inner Sphere forever, before evolving into the Clans following Operation KLONDIKE. What if this was not the case? What if the entire Exodus fleet suffered a misjump that propelled them into another universe, one where Humanity will reclaim an ancient inheritance? This is the story of that possibility.
Crossover - Mechwarrior/Battletech & Halo - Rated: T - English - Sci-Fi/Drama - Chapters: 16 - Words: 120,682 - Reviews: 116 - Favs: 241 - Follows: 289 - Updated: 3h - Published: 8/24/2023 - Master Chief/John-117, Arbiter, 343 Guilty Spark, C. Halsey
The hyper-lethal driver by Ranger2287 reviews
After a failed slip-space jump, The Chief and Cortana find themselves in the world of XC2 but end up in the land of Morytha. And his entry does not go un-noticed by the people of Alrest, in fact it leaves quite the impact.
Crossover - Halo & Xenoblade Chronicles 2 - Rated: M - English - Adventure - Chapters: 9 - Words: 51,706 - Reviews: 16 - Favs: 50 - Follows: 63 - Updated: 14h - Published: 8/17/2022 - Master Chief/John-117, Cortana
The Path of the Savior by Johnnieboy11 reviews
Trapped in another variation of the Milky Way Galaxy after the Fall of Cadia caused the opening of the Cicatrix Maledictum, a minor Eldar Craftworld finds itself stuck in a war between a humanity on the brink of extinction and an alien alliance hell-bent on ending them and the Humans. Unlikely alliances form, friendships are built and the face of the Galaxy will forever be changed
Crossover - Warhammer & Halo - Rated: M - English - Sci-Fi/Adventure - Chapters: 15 - Words: 58,367 - Reviews: 220 - Favs: 739 - Follows: 968 - Updated: 10/17 - Published: 8/12/2019 - Eldar, Master Chief/John-117, A. J. Johnson, 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: 31 - Words: 112,867 - Reviews: 197 - Favs: 638 - Follows: 921 - Updated: 10/17 - Published: 7/8/2022 - Rookie, Shepard
Sins Of A Galactic Empire Reborn by zzzxxc1 reviews
When the Milky Way is revealed to the universe at large by a derelict CIS warship, the UEG are forced to become members of the transgalactic community, but its existence is soon threatened by the decline of the Republic, and the rise of an Empire. Adopted from SpaceCowboy2013.
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi - Chapters: 24 - Words: 195,922 - Reviews: 1141 - Favs: 2,173 - Follows: 2,722 - Updated: 10/16 - Published: 7/28/2018 - Anakin Skywalker, Obi-Wan K., Master Chief/John-117, Cortana
The Galaxy is Flood, Not Food by JacksonTheFox reviews
It is the 42nd Millennium. The Imperium spans the galaxy, yet it has been split in two by Chaos after the opening of the Great Rift. Yet, with the tear in reality, something unexpected emerged. A man, born in another time, arrives not as himself, but as a spore of the most terrible of parasites. The Flood has come to Warhammer 40k.
Crossover - Warhammer & Halo - Rated: T - English - Sci-Fi/Horror - Chapters: 67 - Words: 256,635 - Reviews: 44 - Favs: 244 - Follows: 269 - Updated: 10/16 - Published: 9/10 - Chaos Space Marines, Daemons, Inquisition, Adeptus Mechanicus
Starting a new faction in the Halo universe with StarCraft Technology by CaptainKriss S5-SIERRA-117 reviews
Jean Razak just a regular normal young adult with a balanced lifestyle between gaming,study and work. Somehow out of nowhere he was transported to another planet with similar environments to earth. He gained power called [SYSTEM] to summon the StarCraft Terran faction unit. Can he survive and return to his original home
Crossover - Halo & StarCraft - Rated: T - English - Sci-Fi/Parody - Chapters: 5 - Words: 15,111 - Reviews: 8 - Favs: 73 - Follows: 87 - Updated: 10/16 - Published: 3/29
Halo: Remnants of Reach by noahcook420 reviews
Commander Cook, Leader of the Raiders, was not having a great day. Waking up to the Covenant at New Alexandria's doorstep, Him and whatever hodgepodge of ships that followed hip from Reach make a blind Slipspace jump into the unknown...and right towards the edge of the Remnant system. (Set 3 years before the anime, but will mainly take place during Beacon. No SMUT FFS.)
Crossover - Halo & RWBY - Rated: M - English - Sci-Fi/Mystery - Chapters: 4 - Words: 7,859 - Reviews: 21 - Favs: 18 - Follows: 23 - Updated: 10/15 - Published: 10/10 - SPARTAN-B312/Noble Six, OC, Team RWBY, Team JNPR
Jolt of Metal by Lighting wolf knight reviews
Two breeds of soldiers were bred for war and both with one singular purpose. Rated T for violence, death, and profanity.
Crossover - Halo & Star Wars: The Clone Wars - Rated: T - English - Sci-Fi/Adventure - Chapters: 2 - Words: 3,082 - Reviews: 2 - Favs: 8 - Follows: 15 - Updated: 10/14 - Published: 6/7/2022 - OC, Grace-093, General Grevious, Clones
Wrong Place, Right Time: A Hero's Story by DLTA-BOT reviews
The journey of a hero doesn't always start where they expect. It doesn't always happen to those who expect it. Damon was never interested in being what SPARTANs represent: an implacable force for good standing as humanity's shield. Like most other third-generation SPARTANs, the war took everything from him. All he wanted was to return the favor. Sometimes we don't get a choice.
Crossover - Fallout & Halo - Rated: T - English - Adventure/Sci-Fi - Chapters: 94 - Words: 1,102,388 - Reviews: 272 - Favs: 572 - Follows: 622 - Updated: 10/14 - Published: 9/29/2020 - Sole Survivor, Arthur Maxson, Shaun, OC
The Spartan Hero by SilverExcel115 reviews
The mission's changed, they always do. Sam wasn't expecting entering another world with no possible way back, but his missions objectives remain the same, "Protect humanity, no matter the cost." At the same time, he will be forced to come to terms with his new home and learn what it means to be a hero in this new world. At least he doesn't have to do it alone. Sam and Big 3, C-2A
Crossover - Halo & My Hero Academia/僕のヒーローアカデミア - Rated: T - English - Sci-Fi/Drama - Chapters: 12 - Words: 80,398 - Reviews: 126 - Favs: 321 - Follows: 396 - Updated: 10/14 - Published: 2/16/2022 - [Samuel-034, Nejire Hado] Mirio T., T. Amajiki
The Terminus Exarchate by infamouswestgate reviews
Qelet B'Norai, Batarian cartel-kin and agent of the Covenant, travels the swallowed-yet-undigested worlds of the Terminus Exarchate! Can he save the Covenant Empire from collapsing underneath its own great weight?
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 17 - Words: 49,814 - Reviews: 17 - Favs: 11 - Follows: 15 - Updated: 10/14 - Published: 9/11
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. Hoping to find some answers he enlists the help of a local courier already on a quest of his own to find something. (Under revision)
Crossover - Fallout & Halo - Rated: T - English - Adventure/Western - Chapters: 2 - Words: 7,388 - Reviews: 12 - Favs: 35 - Follows: 50 - Updated: 10/14 - Published: 2/2
Homeward Bound:The Human-Covenant War by Johnnieboy11 reviews
As the Human-Covenant War rages on in the year 2552, the UNSC gathers the best of its SPARTANs on Reach in a final bid to buy themselves time against the tide of the Alien Hegemony.. In the meanwhile, a Patrol Ship orbiting the outer areas of the Epsilon Eridani system finds an unknown vessel as it floats aimlessly. Aboard it may be the key to saving humanity, second to Chief.
Crossover - Halo & SIGNALIS - Rated: T - English - Angst/Sci-Fi - Chapters: 27 - Words: 131,513 - Reviews: 62 - Favs: 230 - Follows: 277 - Updated: 10/13 - Published: 2/7/2023 - [Elster/LSTR-512, Ariane Yong] Master Chief/John-117, Cortana
HELLDIVERS:The Chance Encounter by Johnnieboy11 reviews
Super Earth is at war! In the Galactic West, the Automatons unleash their socialist horror upon the peoples of Super Earth. In the East, meanwhile, Terminids escaped from their cages bring forth destruction on our Colonies! Though, even amidst these trying times, hope remains! Newfound allies have entered the fight for Managed Democracy! Their name? The United Nations Space Command
Crossover - Helldivers & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 10 - Words: 40,206 - Reviews: 125 - Favs: 319 - Follows: 379 - Updated: 10/12 - Published: 3/2 - Master Chief/John-117, A. J. Johnson, Arbiter, SPARTAN-B312/Noble Six
In Search of Redemption (Halo X Half-Life 2) by yosoyblitzo reviews
Thel 'Vadam, the Inquisitor, is transported to an unfamiliar and hostile world. The Combine are aware of Gordon Freeman's return, but with the addition of this powerful Sangheili warrior, the resistance gains a new hope in their fight against the Universal Union.
Crossover - Half-Life & Halo - Rated: T - English - Sci-Fi/Suspense - Chapters: 1 - Words: 4,524 - Reviews: 1 - Favs: 4 - Follows: 11 - Published: 10/11
No Gods, Nor Masters by Johnnieboy11 reviews
After the pyrrhic victory of the Human-Covenant War, the Covenant was split into many warring factions vying for the power of old. The UNSC was left, bloodied, but as the sole power in the Milky Way for now. After an incredible discovery within a set of Forerunner Ruins, an Exploration Fleet with Doctor Halsey at its head is sent out. What they find will change everything.
Crossover - Halo & Gate - Jietai Kare no Chi nite, Kaku Tatakeri - Rated: T - English - Adventure/Sci-Fi - Chapters: 45 - Words: 204,503 - Reviews: 802 - Favs: 1,403 - Follows: 1,665 - Updated: 10/10 - Published: 1/28/2022 - C. Halsey, OC, Itami, Tyuule
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: 19 - Words: 55,106 - Reviews: 18 - Favs: 94 - Follows: 114 - Updated: 10/9 - Published: 6/29/2020 - OC, Team RWBY
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: 6 - Words: 34,539 - Reviews: 70 - Favs: 181 - Follows: 266 - Updated: 10/8 - Published: 7/26 - Master Chief/John-117, Mashu/Shielder, Ritsuka F.
Echoes of the Forerunners: A Covenant Unveiled by Phorus Aedelmaer reviews
The Covenant War erupts with far-reaching consequences across two universes. As the UNSC struggles to survive, they form an unexpected alliance with the species of the Citadel Council. Creative liberties will be taken with the timelines, events, and characters of both franchises.
Crossover - Halo & Mass Effect - Rated: K+ - English - Sci-Fi - Chapters: 13 - Words: 29,754 - Reviews: 127 - Favs: 114 - Follows: 165 - Updated: 10/6 - Published: 9/8
The Reclaimer of Mandalore by UNSC indomitable reviews
Having been awoken by his faithful companion. The Master Chief and Cortana find themselves in an unknown galaxy. Knowing the only way to survive is to remain under the radar. But in a galaxy gripped by war, such a thing was never going to be easy. As the Chief try's to up hold the status quo in the ever changing world of Mandalore, as the galaxy slowly torn apart around them.
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi - Chapters: 25 - Words: 150,146 - Reviews: 530 - Favs: 1,576 - Follows: 2,038 - Updated: 10/6 - Published: 11/25/2020 - OC, Master Chief/John-117, Cortana
The Spartan From Themyscira by Foundunknown01 reviews
For the last two thousand years, Themyscira has isolated itself from the rest of mankind. Building itself up and ignoring the plights of the world which surrounds it. Unfortunately, their calm is shattered when a strange craft falls to earth on the Eastside of their island. Leading to the first man to ever grace their shores since they isolated themselves from the world.
Crossover - Halo & Justice League - Rated: T - English - Sci-Fi/Fantasy - Chapters: 15 - Words: 50,636 - Reviews: 66 - Favs: 184 - Follows: 228 - Updated: 10/5 - Published: 9/8 - Clark K./Kal-El/Superman, Bruce W./Batman, Diana of Themyscira/Wonder Woman, Barbara M./Cheetah
Odyssey of the Untrodden by RamPluto reviews
After centuries of relative peace and isolation, the races of Citadel Space have decided to make the bold and historic step of activating a dormant Relay. Unknowing stumblingly into a war that will change the shape of the entire galaxy.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 2 - Words: 8,943 - Reviews: 41 - Favs: 144 - Follows: 223 - Updated: 10/5 - Published: 10/1 - Master Chief/John-117, Garrus V., Tali'Zorah, Liara T'Soni
The last wall by Lighting wolf knight reviews
The sons of Dorn must fight a war not their own... In a new world. Rated T for violence, death, and profanity.
Crossover - Warhammer & Halo - Rated: T - English - Adventure/Sci-Fi - Chapters: 2 - Words: 2,984 - Reviews: 6 - Favs: 10 - Follows: 13 - Updated: 10/5 - Published: 9/21 - OC, Prophet of Truth, Kelly-087
Halo: Dark Stars-Death Dimension by Ash Maelstrom reviews
AU/FUSION FIC. Part one of a series! 2578. What do Marine stragglers, Sangheili mercenaries, and Banished raiders all have in common? They're about to have a really shitty 25th anniversary of the Great War's end. At the fringes of the battlefield, something is stirred by the rhythm of war and death...or was it already awake and waiting?
Crossover - Halo & Kantai Collection - Rated: T - English - Sci-Fi/Horror - Chapters: 16 - Words: 139,369 - Reviews: 24 - Favs: 21 - Follows: 29 - Updated: 10/4 - Published: 7/4 - Complete
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