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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: 3 - Words: 18,714 - Reviews: 6 - Favs: 12 - Follows: 18 - Updated: 2/21 - Published: 1/19 - Sole Survivor, OC - Complete
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: 28 - Words: 85,271 - Reviews: 41 - Favs: 21 - Follows: 28 - Updated: 2/21 - 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: 6 - Words: 18,843 - Reviews: 85 - Favs: 139 - Follows: 220 - Updated: 2/21 - 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: 29 - Words: 316,768 - Reviews: 2316 - Favs: 4,327 - Follows: 5,376 - Updated: 2/21 - 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: 205 - Favs: 408 - Follows: 526 - 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: 38,961 - Reviews: 114 - Favs: 125 - Follows: 182 - Updated: 2/20 - 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: 1,486 - Follows: 1,765 - 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: 5 - Words: 35,740 - Reviews: 50 - Favs: 284 - Follows: 398 - Updated: 2/18 - 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: 8 - Words: 31,115 - Reviews: 33 - Favs: 109 - Follows: 136 - Updated: 2/18 - 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: 4 - Favs: 17 - Follows: 31 - Published: 2/17
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: 12 - Follows: 19 - Updated: 2/16 - Published: 9/16/2023 - SPARTAN-B312/Noble Six
Audax Novus by A-01 reviews
A bold new world - A strange new reality - Fresh trials, tribulations, allies, and enemies. John fell through the portal from the Mantles Approach, but his luck works in mysterious ways. Now stranded in an alternate reality, how will he strive forward? The galaxy takes a sharp turn from the world we know, and the Reaper threat looms just as large, but no longer so uncontested.
Crossover - Halo & Mass Effect - Rated: M - English - Adventure/Romance - Chapters: 26 - Words: 676,710 - Reviews: 845 - Favs: 1,944 - Follows: 2,374 - Updated: 2/16 - Published: 9/4/2020 - [Master Chief/John-117, Miranda L.] [Shepard, Tali'Zorah]
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: 39 - Words: 138,364 - Reviews: 222 - Favs: 697 - Follows: 994 - Updated: 2/15 - Published: 7/8/2022 - Rookie, Shepard
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: 74 - Words: 164,694 - Reviews: 302 - Favs: 472 - Follows: 536 - Updated: 2/15 - Published: 1/10/2022 - C. Halsey, Naruto U.
Star Wars: Attack on Halo by mpewarren2 reviews
After meeting with the son and Anakin instead of the daughter and Ahsoka in the world between worlds, Ezra Bridger sets off a chain of events that unites three franchises in a battle for survival against multiple threats. Eren Yeager gains total control of the founding after Ymir returns to her time to let her husband die and be with her children after witnessing Mikasa kill him
Crossover - Halo & Star Wars: The Clone Wars - Rated: M - English - Adventure/Sci-Fi - Chapters: 3 - Words: 15,980 - Reviews: 1 - Favs: 3 - Follows: 4 - Updated: 2/15 - Published: 2/9 - Master Chief/John-117, Ahsoka T., Anakin S., R2-D2
The Iron Cross by Lighting wolf knight reviews
Scattered, in a world where their emperor never existed... The Ultramarines have but one purpose... Protect humanity and act among them. Rated T for violence, death, and profanity. Please ignore the latest review. I have blocked that user for insulting words and feelings i do not support.
Crossover - Warhammer & Halo - Rated: T - English - Adventure/Romance - Chapters: 56 - Words: 216,988 - Reviews: 111 - Favs: 318 - Follows: 368 - Updated: 2/14 - Published: 7/15/2023 - Space Marines, OC, Arbiter, Linda-058
From Domination to Genocide V2 by InnocentBlaze686 reviews
4000 years before Darth Vader, there was Mandalore the Preserver, who mysteriously disappeared from the galaxy. With the death of Chancellor Palpatine during his attempted kidnapping, the Republic seeks a new advantage over the CIS, which comes in the form of the newly found Mandalore. But something draws the Jedi away from the Republic: the screams of those suffering genocide.
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 16 - Words: 67,148 - Reviews: 386 - Favs: 495 - Follows: 644 - Updated: 2/14 - Published: 1/23/2016
Louise Summons a Noble Spartan by CIA 4UUUU reviews
As posted on RainEStar3's Space Battles forum, Louise Summons Series. What would happen if Louise summoned Noble 6? Let's find out.
Crossover - Halo & Familiar of Zero - Rated: M - English - Sci-Fi/Fantasy - Chapters: 2 - Words: 10,504 - Reviews: 9 - Favs: 27 - Follows: 47 - Updated: 2/9 - Published: 1/28
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: 12 - Words: 48,415 - Reviews: 142 - Favs: 352 - Follows: 432 - Updated: 2/9 - Published: 3/2/2024 - Master Chief/John-117, A. J. Johnson, Arbiter, SPARTAN-B312/Noble Six
A Lady Waltz Through The Stars by Legotrix reviews
being x lost, Tanya simply did not win, they both shared a distant past that their soul had forgotten, they had more of a past linked to their quarrel, a record. (Captain of the UNSC Tanya had a story going back millennia ago)
Crossover - Halo & Youjo Senki: Saga of Tanya the Evil - Rated: T - English - Sci-Fi/Tragedy - Chapters: 23 - Words: 62,668 - Reviews: 2 - Favs: 12 - Follows: 13 - Published: 2/9 - J. Keyes, C. Halsey, Tanya, Viktoriya
The New Hope:The Phoenix Rises by Johnnieboy11 reviews
It is the Dark Age of Axis Victory and the world is rapidly crumpling. In the West, the Organization of Free Nations maintains the last democracies in the world through force of arms, while East of the Atlantic, the Axis's reign of terror over Europe and Asia continues. One unknown contact, however, is set to tip the balance of power forever.
Crossover - Halo & Hearts of Iron - Rated: M - English - Romance/Sci-Fi - Chapters: 6 - Words: 28,620 - Reviews: 26 - Favs: 99 - Follows: 134 - Updated: 2/8 - Published: 9/10/2024 - J. Cutter, E. Anders, Douglas-042, OC
Wolves That Walk Alone by TheManThatWalksTheAbyss115 reviews
There's always been growing legends in Remnant. Some of fearless warriors and others of horror, but there's one that's recently been picked up by the inhabitants. A legend of a man who was more akin to a wolf without a pack, barely speaking and doing his deed before leaving without a trace. After all... some people just want isolation rather than company.
Crossover - Halo & RWBY - Rated: M - English - Sci-Fi/Adventure - Chapters: 45 - Words: 357,460 - Reviews: 4871 - Favs: 4,253 - Follows: 4,828 - Updated: 2/7 - Published: 5/8/2019 - SPARTAN-B312/Noble Six, L. Ren, Nora V.
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: 17 - Words: 66,688 - Reviews: 241 - Favs: 811 - Follows: 1,053 - Updated: 2/4 - Published: 8/12/2019 - Eldar, Master Chief/John-117, A. J. Johnson, OC
Nier: Great Journey by RamPluto reviews
Finding herself on an unknown ringworld, alone save for her Pod, 2B finds herself thrusted into the middle of an unknown and seemingly intergalactic conflict. With the aid of the Master Chief, 2B will find herself dealing with two worlds, one where Humanity is extinct and the other where war is a constant ever looming threat, to all of mankind and existence itself.
Crossover - Halo & Nier - Rated: T - English - Sci-Fi/Adventure - Chapters: 8 - Words: 50,369 - Reviews: 120 - Favs: 363 - Follows: 504 - Updated: 2/3 - Published: 2/20/2024 - Master Chief/John-117, Cortana, 2B, 9S
The Call to War by silencewillfall0091 reviews
In 2550 CE, 25 years into our war with the Covenant, a Turian fleet exploded out of the ice moon orbiting Lusitania. The Hierarchy, aching for a war since the humiliation of the Rachni invasion, stumbled into the most brutal conflict in recent galactic history.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 1 - Words: 2,164 - Reviews: 15 - Favs: 84 - Follows: 120 - Published: 2/2
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