Halo Crossovers
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Above and Beyond by Johnnieboy11 reviews
Exploration and the discovery of new Forerunner ruins and technologies was the Infinity's and Shadow of Intent's newest goal. On one such trip, hunting through uncharted Galactic space for a piece of technology hinted at by a Forerunner Archive, the Infinity and Shadow get mistakenly transported to a realm unknown to them. A universe similar, yet different to their own...
Crossover - Halo & Sunrider - Rated: M - English - Sci-Fi/Romance - Chapters: 29 - Words: 179,067 - Reviews: 62 - Favs: 99 - Follows: 128 - Updated: 5/25 - Published: 5/20/2019 - Master Chief/John-117, Kayto S., Asaga O., Chigara A.
The Men From Onyx by kpmh2001 reviews
A UNSC frigate is sent into another dimension after a disaster with their slipspace drive. Now lost in unknown territory, they must attempt to befriend the population of a local planet of strange humans under constant siege from an army of monsters. Consider this a minor AU as there are some slight differences, but everything major is still in the same place.
Crossover - Halo & RWBY - Rated: T - English - Drama/Sci-Fi - Chapters: 85 - Words: 542,061 - Reviews: 1395 - Favs: 1,091 - Follows: 1,322 - Updated: 5/24 - Published: 1/13/2019 - Ruby R., Ozpin, J. Ironwood, Winter S.
Spirit of Fire by GoldenThorns-Fiverr reviews
A Crossover fanfic I did as a Fiverr request.
Crossover - Halo & Mass Effect - Rated: T - English - Chapters: 1 - Words: 7,853 - Reviews: 3 - Favs: 8 - Follows: 8 - Published: 5/24 - Complete
Mass Effect: Galaxy at war by palik reviews
A Citadel Exploration fleet filled with people the council didnt want around discovers something that will change the face of Citadel Space forever. The council will experience a crash course in the fight for survival (Reaper Incursion Arc)
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 27 - Words: 81,864 - Reviews: 503 - Favs: 1,070 - Follows: 1,549 - Updated: 5/23 - Published: 6/18/2020
Doom&Halo crossover by Jessica Williams2
A combination of both of these games Can they stop the threat of the Covenant and the Demons of Hell
Crossover - Doom & Halo - Rated: M - English - Horror/Adventure - Chapters: 1 - Words: 775 - Favs: 1 - Follows: 1 - Published: 5/22 - Doomguy, Samur Makyr/S. Hayden, Master Chief/John-117, Cortana
Troy by ClancyJr reviews
117 is embroiled in an ancient conflict clashed between the Greeks and the Trojans. He is to turn the tide of their most pivotal battle yet. (Rewrite approved by MiracleMoment, the former author).
Crossover - Halo & Greek Mythology - Rated: M - English - Drama/Suspense - Chapters: 5 - Words: 37,497 - Reviews: 95 - Favs: 216 - Follows: 267 - Updated: 5/20 - Published: 10/24/2021 - Master Chief/John-117, Cortana
Operation Unusual Paperwork by kpmh2001 reviews
A side story containing all of the story exerpts, post chapter nonsense, and omakes that the world of The Men From Onyx has to offer, now in one convenient package! Warning: The tone and intention of these short stories will change on a by-chapter basis, tonal consistency is effectively not a consideration.
Crossover - Halo & RWBY - Rated: T - English - Parody/Humor - Chapters: 28 - Words: 98,891 - Reviews: 134 - Favs: 87 - Follows: 94 - Updated: 5/19 - Published: 10/4/2019
A Noble Age by SSJ Lone Wolf reviews
Following the Fall of Reach, Noble Six and Auntie Dot are transported to Thedas. A primitive world where Elves, Dwarves, Magic, Demons, and many other supernatural creatures exist, and on the brink of destruction as a Blight threatens to destroy the world if left unchecked. Joining the fray protect their new home, the world will soon learn exactly what a real Demon is capable of.
Crossover - Halo & Dragon Age - Rated: M - English - Chapters: 1 - Words: 6,382 - Reviews: 20 - Favs: 112 - Follows: 149 - Published: 5/19 - SPARTAN-B312/Noble Six, Alistair, Leliana, Morrigan
The Guiding Fire by UNSC indomitable reviews
A Commander striped of authority. The world divide and falling. Last fading light. Hope lays in Spirit and might. As those with the fire lay dying. All must stand fast in the face howling night.
Crossover - Halo & Azur Lane/碧蓝航线 - Rated: T - English - Sci-Fi/Adventure - Chapters: 9 - Words: 58,785 - Reviews: 68 - Favs: 139 - Follows: 205 - Updated: 5/18 - Published: 7/22/2020 - J. Cutter, Belfast, OC
Flames of War by Lighting wolf knight reviews
Space Marines and Spartans weren't so different... Especially for war. Rated T for violence, death, and profanity. Doesn't entirely follow games. Does NOT follow Warhammer logic or lore no Imperium conquest.
Crossover - Warhammer & Halo - Rated: T - English - Romance/Adventure - Chapters: 3 - Words: 5,724 - Reviews: 5 - Favs: 14 - Follows: 23 - Updated: 5/18 - Published: 1/28 - [OC, Linda-058] Space Marines, Kelly-087
Stargate:Spartan Siege by Johnnieboy11 reviews
After the battle on Mantle's Approach, the Chief finds himself, alongside a non-rampant Cortana, helping the Humans of a galaxy similar, yet different to his own, battle their enemies, while exploring the countless worlds tied together by a network of ancient portals and uncovering the mysteries surrounding these worlds.
Crossover - Stargate: SG-1 & Halo - Rated: T - English - Adventure/Sci-Fi - Chapters: 5 - Words: 17,904 - Reviews: 63 - Favs: 333 - Follows: 504 - Updated: 5/17 - Published: 12/24/2020 - D. Jackson, J. O'Neill, Teal'c, Master Chief/John-117
Halo: Life's Convergence by NeroFlashfox
An elemental recently graduating Elemental school and marine bootcamp was offered the choice to join the Maelstrom Company. This is her story as she navigates the events that happen during Universal Vortex. Will she surive to become part of history and become a legend. Or straight up die because her Captain and her leaders are straight up crazy! Noble 6 and Naruto later
Crossover - Halo & Naruto - Rated: M - English - Chapters: 1 - Words: 2,141 - Favs: 13 - Follows: 14 - Published: 5/16 - SPARTAN-B312/Noble Six, Naruto U., Kakashi H., OC
War of the Old Ones by Ian the Mechanic reviews
In forgotten ages past, two near eldritch forces vied for the very life essence of the Galaxy. Unknown to the young races, that war is still ongoing. how can the UNSC, the Citadel Council or the Covenant hope to stand against such forces, when they are still embroiled in their own petty squabbling? How could they hope to survive the War of the Old Ones?
Crossover - Mass Effect & Halo - Rated: M - English - Sci-Fi/Horror - Chapters: 14 - Words: 72,595 - Reviews: 86 - Favs: 141 - Follows: 221 - Updated: 5/16 - Published: 2/21
A hunter in waiting by TheDinoDude427 reviews
The Lek'golo, a race of worms that work together to shape an individual that had the ability to think as a group. But the lek'golo are not a race found on earth, but it would be quite the coincidence that a case 53 came into the Bay as a group of Lek'golo worms. Let's sit back and watch the chaos. (This is somewhat a self-insert story; you have been warned)
Crossover - Halo & Worm - Rated: M - English - Humor/Sci-Fi - Chapters: 6 - Words: 14,479 - Reviews: 47 - Favs: 169 - Follows: 202 - Updated: 5/14 - Published: 3/9 - OC, Skitter, Dinah A.
Mass Effect - Orion by Fallen2Pancake reviews
This is a Mass Effect - Halo - XCOM Crossover. In the year 2084 during the Asteroid Belt Offensive XCOM Elite Unit Strike-1 discovers an Ethereal Station but must Psionic Teleport away but something goes wrong. In the Year 2552 the UNSC Fearless an Orion-Class Assault Carrier is forced to escape Reach under heavy fire, during the Slipsapce Transit something goes wrong.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 8 - Words: 61,867 - Reviews: 69 - Favs: 165 - Follows: 235 - Updated: 5/13 - Published: 4/16 - SPARTAN-B312/Noble Six, Rookie, D. Anderson, Shepard
War and peace by Curiously intrigued reviews
The reapers brings new galactic superpowers into the war after invading the Orion arm of the galaxy. will the conflict unite them against a common foe or will they open conflict with each other.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 2 - Words: 2,510 - Reviews: 12 - Favs: 43 - Follows: 78 - Updated: 5/11 - Published: 5/5
Mass Effect: ODST Lost by Stardew's Stardrop reviews
ODST Captain Nathanial Renkov unintentionally becomes the first Helljumper to survive being dropped through a Slipspace anomaly. The problem? He has no idea where is and is surrounded by aliens the UNSC has no record of. Even worse? No one knows what the UNSC is. Follow his story as he tries to make sense of his new surroundings while trying to survive a new galactic threat.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 4 - Words: 15,072 - Reviews: 16 - Favs: 81 - Follows: 123 - Updated: 5/11 - Published: 4/24 - OC, Ashley W., Tali'Zorah, Shepard
Red vs Blue Tale of Six Age of Freelancers by Sonicdudes2000 reviews
Oni Reaper survived the Fall of Reach and was hired by the Director to aid in Project Freelancer Get's close to the agents even some non-human member of the project, however, the truth why he is here and why he even important at all will bring about the end of the Age of Freelancers. (Cover done by a friend of mine)
Crossover - Halo & Red vs. Blue - Rated: M - English - Humor/Adventure - Chapters: 18 - Words: 66,986 - Reviews: 20 - Favs: 56 - Follows: 58 - Updated: 5/11 - Published: 8/14/2017 - SPARTAN-B312/Noble Six, L. Church/Alpha, Carolina, Tex/Allison - Complete
Halo-Naruto: Task Force Hestati by Azores reviews
As the deserters of the UEG establish themselves in a new region of space, far from the apocalyptic war with the Covenant, new challenges emerge, especially from the strange world of Shinsei. With the UNSC elements desperate to maintain peace and their influence, a new special forces unit is established. This is their story and the stories of others. *AU. Side-Story of Halo-Naruto*
Crossover - Halo & Naruto - Rated: M - English - Sci-Fi - Chapters: 3 - Words: 29,126 - Reviews: 10 - Favs: 36 - Follows: 39 - Updated: 5/8 - Published: 11/9/2020
subject six, the unnamed member of raptor team by Darkdragondude1234
you might have heard of prophet or nomad or alcatraz. me, i was the forgotten six member. i no longer remember my own name. they called me six. that is what i am stickin too. i will make people remember me. my attemp at a halo tv show series and crysis crossover. don't know how good it will be.
Crossover - Halo & Crysis - Rated: M - English - Chapters: 1 - Words: 2,665 - Favs: 2 - Follows: 2 - Published: 5/8
The past redefined - An Azur Lane x Halo story by BabbyBobby021 reviews
In the midst of chaos, three kansens of the United Nations Space Command became the first casualties of a battle to protect humanity's right to exist, the Battle of Earth. Now, they found themselves staring at their home planet but of a far distant past, these kansens had to make a choice: should they just watch things unfold again or should they change the course of history?
Crossover - Halo & Azur Lane/碧蓝航线 - Rated: M - English - Hurt/Comfort/Drama - Chapters: 10 - Words: 48,032 - Reviews: 64 - Favs: 172 - Follows: 228 - Updated: 5/7 - Published: 8/1/2021
The Way the World Ends by Canelo312 reviews
AU. Spartans never die. But we all know that's not true. A terrifying new enemy approaches and only time will tell if the forces that be can stop them.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 1 - Words: 25,002 - Reviews: 7 - Favs: 42 - Follows: 59 - Published: 5/7 - Master Chief/John-117, SPARTAN-B312/Noble Six, Liara T'Soni, Shepard
Mass effect: the Jaded ones by Ray SK reviews
A UNSC Human-covenant war-era battle group led by a Punic class supercarrier is introduced to a new galaxy. One where people are xenophilic, use to times of peace and harmony, and against disrupting the Status Quo. What will an extremely aggressive xenophobic and battle-hardened human faction add to the mix? and will their addition change the future of this galaxy. (No Spartans)
Crossover - Halo & Mass Effect - Rated: M - English - Adventure/Humor - Chapters: 3 - Words: 17,798 - Reviews: 47 - Favs: 105 - Follows: 160 - Updated: 5/7 - Published: 2/6 - E. Buck, OC
Machines and Might by Strategic.Ignorance reviews
Eight years before the USJ Incident, the Hero Public Safety Commission learns of the Meta Liberation Army. Doubting the current heroes ability to stop this threat, the Commission sees this as the perfect opportunity to usher in a new age of heroes. The first step is the kidnapping of one hundred kids. Among them is Izuku Midoriya. Moderate AU.
Crossover - Halo & My Hero Academia/僕のヒーローアカデミア - Rated: T - English - Sci-Fi/Friendship - Chapters: 16 - Words: 56,011 - Reviews: 89 - Favs: 220 - Follows: 308 - Updated: 5/6 - Published: 12/1/2021 - William-043, Izuku M., Hitoshi S., Mei H.
Reclamation of fate, a hero's destiny by Darkdragondude1234 reviews
don't know how good this will be. this is inspired from the new halo tv show. some changes will be happening and i don't own any of the tv show characters or percy jackson books. this is in no way connected to main tv show cannon. this is also a mass effect crossover between the other two. please keep in mind that i'm not a good writer
Crossover - Halo & Percy Jackson and the Olympians - Rated: M - English - Sci-Fi/Adventure - Chapters: 2 - Words: 5,789 - Reviews: 2 - Favs: 1 - Follows: 2 - Updated: 5/6 - Published: 5/2
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