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Full Circle by sleepycrawler1 reviews
The beginning marks the end, how truer have those words ever been until now. We stopped Truth and are firing Halo to exterminate the Flood, while also hightailing it as fast as we can back to the Portal to return home with all hands accounted... Well some. As Chief said "We'll head to the Portal and we'll all go home" Sadly nothing ever goes as planned.
Crossover - Halo & Nier - Rated: M - English - Sci-Fi - Chapters: 5 - Words: 51,146 - Reviews: 38 - Favs: 175 - Follows: 278 - Updated: 1/17/2024 - Published: 3/10/2023 - OC, Devola, Pascal, Anemone
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: 7 - Words: 20,898 - Reviews: 12 - Favs: 85 - Follows: 107 - Updated: 11h - Published: 3/29/2024
Bellum Terranum by F35B reviews
The Republic after finding a small planet on the edge of their space, is introduced to the Milky Way. For 15 years there was an unstable peace. However War is indeed inevitable and the Republic, after an incident over a Terran Colony, began its invasion. But Terrans do not go quietly. These are the stories of those who fought the war which will be known as... Bellum Terranum.
Crossover - Star Wars & Halo - Rated: M - English - Sci-Fi - Chapters: 4 - Words: 27,418 - Reviews: 222 - Favs: 539 - Follows: 684 - Updated: 22h - Published: 1/3/2023 - OC
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: 2 - Words: 16,970 - Reviews: 2 - Favs: 16 - Follows: 27 - Updated: 2/25 - Published: 2/9 - Griffin Commander, M4 SOPMOD II, RO635, OC
Knights of Sidonia & Halo Forward unto Dawn Crossover by Coolslick78 reviews
A new day dawns upon a parallel universe. The crew of Sidonia has colonized lem. It continues its journey through space searching for other soler systems but on an advanced mining mission, they discover a mysterious ship suspended inside an enormous ice asteroid. Apon searching the derelict ship they find its named "The UNSC Forward unto Dawn" with one crew onboard.
Crossover - Halo & Knights of Sidonia/シドニアの騎士 - Rated: K - English - Romance/Sci-Fi - Chapters: 7 - Words: 23,199 - Reviews: 8 - Favs: 8 - Follows: 11 - Updated: 2/25 - Published: 8/1/2024 - Tanikaze N., Izana S., Yuhata M.
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: 38 - Words: 52,070 - Reviews: 141 - Favs: 108 - Follows: 160 - Updated: 2/24 - Published: 10/18/2024 - OC, W. Adama, S. Tigh, Gaeta
The Noble Diaries by SSJ Lone Wolf reviews
Finding himself back in time to the early twenty-first century, Six thought that attending Highschool would be a breeze compared to fighting the Covenant and Insurrectionists. But between Vampires, Werewolves, doublegangers, and countless other supernatural creatures and who knows what else, he finds that his troubles are just starting.
Crossover - Halo & Vampire Diaries - Rated: M - English - Chapters: 12 - Words: 141,378 - Reviews: 496 - Favs: 596 - Follows: 701 - Updated: 2/24 - Published: 7/3/2023 - SPARTAN-B312/Noble Six, Elena G., Stefan S., Bonnie B.
Rising Tide by EliteArbiter reviews
The sudden arrival of the UNSC and ex-Covenant factions into the Andromeda Galaxy caused unmissable changes within the galactic community. But as the awe in the newcomers fades and time ticks down towards Knightfall, low tide passes unseen, and in the murkiest depths of the galaxy, the tide begins to rise... Inspired by UH-60 Nightstalker's "The Terran-Republic Affair"
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi/Suspense - Chapters: 22 - Words: 111,972 - Reviews: 509 - Favs: 874 - Follows: 1,081 - Updated: 2/20/2022 - Published: 5/16/2021 - Anakin Skywalker, Master Chief/John-117, Arbiter, Rtas 'Vadumee
Thus I Scatter Rewrite by The crimson trucker reviews
An unexpected slip-space rupture sends Summer Rose to the streets of New Mombasa. Looking for a way home, She learns a secret hidden through time. Rwby and Halo are owned by their respective owners and creators. Please support the official release.
Crossover - Halo & RWBY - Rated: T - English - Sci-Fi/Adventure - Chapters: 8 - Words: 12,564 - Reviews: 18 - Favs: 79 - Follows: 130 - Updated: 1/30 - Published: 11/21/2023 - A. J. Johnson, Arbiter, Cortana, Summer R.
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: 10 - Words: 89,515 - Reviews: 37 - Favs: 243 - Follows: 285 - Updated: 2/23 - Published: 4/16/2024 - OC, V, Johnny Silverhand, Rogue A.
Roses and Violets by Gashadokur0 reviews
Ever heard of a giant Megacorp falling down from the sky? Neither did Night City. Until a suriving group of UNSC came down with a mishmash of a UNSC Carrier ship. That certainly gave Night City something to talk about for months. (Inspired by both the main Halo series and Red vs Blue)
Crossover - Halo & Cyberpunk 2077 - Rated: T - English - Humor/Sci-Fi - Chapters: 35 - Words: 182,949 - Reviews: 158 - Favs: 297 - Follows: 371 - Updated: 2/23 - Published: 1/26/2024
The Exiles:A New Power by Johnnieboy11 reviews
The beginning of the Battle For Earth signaled the start of the final, bloodiest campaign of the Human-Covenant War. Hastily, a plan is put into motion and an Ark Fleet, composed of a dozen Phoenix-class vessels and their escorts, makes the jump out of system. Either interference, or malfunction, causes their arrival to a new Galaxy, where new threats lurk just around the corner.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 32 - Words: 130,420 - Reviews: 552 - Favs: 1,201 - Follows: 1,682 - Updated: 11/7/2024 - Published: 12/26/2021 - OC, Tali'Zorah, Admiral Hackett, Rael'Zorah
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: 63 - Words: 261,629 - Reviews: 583 - Favs: 748 - Follows: 912 - Updated: 2/22 - Published: 11/29/2022 - Master Chief/John-117, Cortana, Commander, Rapi
Wrong Place, Right Time: A Hero's Past by DLTA-BOT reviews
An opportunity he thought he'd never get. Damon is a 3rd generation SPARTAN who had everything taken from him, like most other 3rd generation recruits. Despite that, he managed to find a new home and a new family. But what if he had the chance to see his old one again? A companion story to Wrong Place, Right Time: A Hero's Story
Crossover - Fallout & Halo - Rated: T - English - Sci-Fi/Hurt/Comfort - Chapters: 2 - Words: 14,844 - Reviews: 5 - Favs: 12 - Follows: 18 - Updated: 2/7 - Published: 1/19 - Sole Survivor, OC
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: 24 - Words: 70,638 - Reviews: 36 - Favs: 17 - Follows: 23 - Updated: 12/1/2024 - Published: 9/11/2024
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: 72 - Favs: 113 - Follows: 186 - Updated: 1/26 - Published: 8/12/2024
On the Illusion of Might by evevee reviews
We thought ourselves powerful, able to conquer a galaxy with nothing but toys. When we overcame every challenge, breached the space between the galaxies themselves, what use were the words of a race ashamed of their own past? Yet we cannot deny that we were warned, for while a challenge to a human is laughable, a challenge to humanity is a death sentence.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 28 - Words: 308,369 - Reviews: 2273 - Favs: 4,308 - Follows: 5,356 - Updated: 2/21/2024 - Published: 2/21/2017 - Master Chief/John-117, Cortana, Garrus V., Shepard
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: 25 - Words: 93,133 - Reviews: 204 - Favs: 401 - Follows: 517 - Updated: 2/20 - Published: 9/8/2024 - Clark K./Kal-El/Superman, Bruce W./Batman, Diana of Themyscira/Wonder Woman, Barbara M./Cheetah
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: 8 - Words: 35,684 - Reviews: 107 - Favs: 114 - Follows: 167 - Updated: 11/4/2024 - Published: 4/4/2024 - [Master Chief/John-117, Ashley W.] Arbiter, Saren A.
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: 50 - Words: 225,087 - Reviews: 821 - Favs: 1,479 - Follows: 1,757 - Updated: 2/18 - Published: 1/28/2022 - C. Halsey, OC, Itami, Tyuule
Massive Reckoning: Interstellar Assualt by vmoneywashere reviews
In the 2700s, the Milky Way is flourishing. Access to Forerunner ruins has allowed the races of the galaxy to explore their home and new galaxies. Now, a new fleet, lead by an Ancient Punic Class Fleet Carrier, is moving to explore a new galaxy. Soon enough, the UNSC will find itself embroiled in a new Great War, with a few standing in the way of mass extinction. (slow updates)
Crossover - Halo & Mass Effect - Rated: K+ - English - Sci-Fi - Chapters: 4 - Words: 31,484 - Reviews: 46 - Favs: 271 - Follows: 380 - Updated: 6/18/2024 - Published: 10/9/2023 - P. Cole, OC, Admiral Hackett, Shepard
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: 17 - Favs: 73 - Follows: 96 - Published: 1/30/2023 - G-Man, Gordon F., Master Chief/John-117, Cortana
Louise Summons a Halo by CIA 4UUUU reviews
As posted on RainEStar3's Spacebattle's forum, Louise Summons (Series). What would happen if Louise summoned a Halo? Let's find out.
Crossover - Halo & Familiar of Zero - Rated: T - English - Fantasy/Sci-Fi - Chapters: 1 - Words: 5,173 - Reviews: 2 - Favs: 9 - Follows: 19 - Published: 2/17
Mjolnir Overlord by RamPluto reviews
The Master Chief arrives on Fevrith finding himself plunged into the midst of a conflict bathed in fantasy. Elves, witches, wyverns, and wizards, every fairy tale element is present in this new alien world. With no escape or contact back home in sight, will the Chief find a way back? Or will his journey to liberate a kingdom be the ultimate key he needs to find his humanity?
Crossover - Halo & Unicorn Overlord - Rated: T - English - Fantasy/Sci-Fi - Chapters: 6 - Words: 24,479 - Reviews: 39 - Favs: 80 - Follows: 104 - Updated: 2/17 - Published: 9/8/2024 - Master Chief/John-117, Rosalinde, Eltolinde, Alain
Infinite Noble by Arkanehouse reviews
"Conoces esta cosa...la vieja paradoja de remplazo, se pregunta si cuando a un objeto se le reemplazan todas sus partes, si este sigue siendo el mismo. Ya no eres el mismo, pero ellos creen que esa versión tuya es el verdadero tu. ¿Pero por qué? ¿Solo porque apareció primero?. Si no, tendrás que inventar tu propio "yo". O no ser nadie en absoluto. Ese es tu problema."
Crossover - Halo & Infinite Stratos/IS<インフィニット・ストラトス> - Rated: M - Spanish - Sci-Fi/Adventure - Chapters: 6 - Words: 17,637 - Reviews: 1 - Favs: 11 - Follows: 16 - Updated: 2/16 - Published: 9/16/2023 - SPARTAN-B312/Noble Six
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