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Do not be afraid! by Life in the City reviews
It was said that those who came before the Forerunner's created all life. They seeded fertile dark matter that exists and created universes. They willed atoms together to create intelligent life. Yet, despite their accomplishments, they fell without a fight. They let the denizens of the Milky Way commit wholesale destruction of their society. Or did they?
Crossover - Star Wars & Halo - Rated: M - English - Horror/Sci-Fi - Chapters: 3 - Words: 17,823 - Reviews: 1 - Favs: 8 - Follows: 19 - Updated: 7/21 - Published: 4/28
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: 4 - Words: 4,038 - Reviews: 2 - Favs: 6 - Follows: 9 - Updated: 7/21 - Published: 4/19
A Phoenix's Rebellion by SPARTAN REAPER-9060 reviews
The Spirit Of Fire, a veteran ship of the Human-Covenant War but declared Lost With All Hands by the UNSC on February 10, 2534. Mysteriously the ship appeared over Earth but an Earth they never knew before. Rated M for my Language.
Crossover - Halo & Code Geass - Rated: M - English - Chapters: 5 - Words: 12,259 - Reviews: 10 - Favs: 74 - Follows: 90 - Updated: 7/19 - Published: 8/31/2021 - J. Cutter, Jerome-092, Lelouch L., Nunnally L.
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: 26 - Words: 94,441 - Reviews: 177 - Favs: 592 - Follows: 874 - Updated: 7/18 - Published: 7/8/2022 - Rookie, Shepard
The Spartan of the Planet of the Apes by Scepter 2-1 actual reviews
It's been years since Noble Six and Auntie Dot found themselves in an alternate Earth being ravaged by a deadly plague. Now, a new threat emerges in the form of evolved and highly intelligent apes. Can Six and Dot ensure mankind's dominance? Or will they fall in the wake of the Ape uprising? Cover image does not belong to me.
Crossover - Planet of the Apes & Halo - Rated: T - English - Adventure/Drama - Chapters: 5 - Words: 20,503 - Reviews: 45 - Favs: 105 - Follows: 132 - Updated: 7/17 - Published: 11/23/2023 - Caesar, SPARTAN-B312/Noble Six
Avengers: Spartans Assemble by RedVitBR reviews
Earth's Mightiest Heroes are thrown into another universe against their will. Now they have to join in a war for humanity's survival while their allies have to protect their home and find new heroes.
Crossover - Halo & Avengers - Rated: M - English - Sci-Fi - Chapters: 1 - Words: 13,968 - Reviews: 5 - Favs: 23 - Follows: 48 - Published: 7/16 - Master Chief/John-117, Captain America/Steve R., Iron Man/Tony S., Agent Phil Coulson
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: 31 - Words: 127,162 - Reviews: 225 - Favs: 801 - Follows: 994 - Updated: 7/16 - Published: 3/23/2023 - Anakin Skywalker, Ahsoka T., Master Chief/John-117, T. Lasky
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: 32 - Words: 403,190 - Reviews: 1448 - Favs: 1,733 - Follows: 1,895 - Updated: 7/16 - Published: 1/12/2020 - Master Chief/John-117, Arbiter, Team RWBY, Team JNPR
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: 15 - Words: 116,157 - Reviews: 113 - Favs: 221 - Follows: 268 - Updated: 7/16 - Published: 8/24/2023 - Master Chief/John-117, Arbiter, 343 Guilty Spark, C. Halsey
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: 96 - Words: 530,923 - Reviews: 428 - Favs: 913 - Follows: 1,065 - Updated: 7/16 - Published: 9/30/2021 - [Harry P., Hermione G., Daphne G.] Master Chief/John-117
On An Eagles Wings by A Salty Archer reviews
The war is over. The Dawn never found Requiem. Cortana made the ultimate sacrifice for her protector and friend. Forced into retirement, John is struggling with life. But when he finds himself in a battle royal with strange, humanoid aliens, he continues to fight. But even if the eagle is broken, a flock can still help him spread his wings and fly once more.
Crossover - Halo & Sekirei - Rated: M - English - Sci-Fi - Chapters: 12 - Words: 177,536 - Reviews: 371 - Favs: 800 - Follows: 1,045 - Updated: 7/14 - Published: 7/24/2019 - Master Chief/John-117
Divergent Warriors Rise Of The Hunter by BeeSamusnChief reviews
Alternate version of Different Galaxies Same Fighting Hearts. After destroying the first Halo, Master Chief on his way to warn Earth of the incoming Covenant invasion. On his Journey he accidentally enlists an extraordinary toddler to join him in the war against the Covenant.
Crossover - Halo & Metroid - Rated: M - English - Drama/Family - Chapters: 5 - Words: 131,991 - Reviews: 3 - Favs: 31 - Follows: 40 - Updated: 7/12 - Published: 9/8/2023 - Master Chief/John-117, Samus A.
Spartan of Tristain by Dan Is Here reviews
Louise Françoise Le Blanc de La Vallière, a student at the Tristain Academy of Magic, performs a summoning ritual that goes horribly wrong, catapulting her into the universe of Halo. Captured by ONI and forced into the Spartan-II program, she becomes Spartan Triple Zero. As a super-soldier fighting the Covenant, she longs for home while navigating relentless battles and her past.
Crossover - Halo & Familiar of Zero - Rated: T - English - Sci-Fi/Angst - Chapters: 2 - Words: 7,250 - Reviews: 13 - Favs: 95 - Follows: 122 - Updated: 7/11 - Published: 6/13 - Louise
Empires Unite! Milky Way by SapphireDawn11709 reviews
When the SGC Destroys the Quantum Mirror after the incident were Doctor Carter and Major Kawasaki appear in Area 51a ripple was sent across the multiverse. When this ripple hit a Forerunner portal chaos ensues as fleets from three universe appear in the Milky Way. Starship Troopers, Mass Effect, Halo Stargate
Crossover - Stargate: SG-1 & Halo - Rated: M - English - Sci-Fi - Chapters: 7 - Words: 28,587 - Reviews: 92 - Favs: 270 - Follows: 334 - Updated: 7/8 - Published: 6/24/2019 - T. Lasky, S. Carter
Halo: Converging Outset by NightEternity reviews
Humanity is pushed to the brink as the military of Reach falls. Not long after, a Lone Wolf and his CO are saved from death on Reach as one of humanity's hopes is extracted off world with a battle group of ships arriving to make sure humanity actually has a fighting chance. An escape leads to another chance to have their own adventures in another galaxy with so many possibilities
Crossover - Star Wars & Halo - Rated: M - English - Adventure/Romance - Chapters: 1 - Words: 13,360 - Reviews: 5 - Favs: 36 - Follows: 48 - Published: 7/5 - [Padmé Amidala, Darth Talon, Catherine-B320/Kat/Noble Two, SPARTAN-B312/Noble Six]
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: 31 - Words: 127,304 - Reviews: 524 - Favs: 1,082 - Follows: 1,530 - Updated: 7/5 - Published: 12/26/2021 - OC, Tali'Zorah, Admiral Hackett, Rael'Zorah
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: 91 - Words: 1,070,700 - Reviews: 257 - Favs: 557 - Follows: 610 - Updated: 7/5 - Published: 9/29/2020 - Sole Survivor, Arthur Maxson, Shaun, OC
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: 17 - Words: 74,324 - Reviews: 257 - Favs: 636 - Follows: 878 - Updated: 7/3 - Published: 12/24/2020 - D. Jackson, J. O'Neill, Teal'c, Master Chief/John-117
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: 14 - Words: 53,862 - Reviews: 212 - Favs: 711 - Follows: 934 - Updated: 7/1 - Published: 8/12/2019 - Eldar, Master Chief/John-117, A. J. Johnson, OC
Echoes of the Force: Awakening of the Fire by Dan Is Here reviews
In a twist of fate, the UNSC Spirit of Fire arrives in the Star Wars galaxy, where it crosses paths with the daring Ghost crew. Together, they defeat an Imperial Star Destroyer, integrate a hyperdrive, and forge a strong alliance. This unexpected alliance kindles a glimmer of hope, hinting that the Spirit of Fire may yet navigate its way home.
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 6 - Words: 33,618 - Reviews: 23 - Favs: 158 - Follows: 191 - Updated: 6/30 - Published: 3/5 - Hera S., Kanan J., J. Cutter, E. Anders
Project Atlas by Masso 2010 reviews
The Spartans are trained to be unthinking, unflinching and unmoving in the face of the impossible. Project Atlas is so much more, when humanity looks up into the sky they can see Hope, Justice, Reverence. When those that seek to hurt humanity look up into the sky, they see the warrior, the monster, the demon. To those who seek the destruction of humanity, he is the Cataclysm.
Crossover - Superman & Halo - Rated: M - English - Adventure/Sci-Fi - Chapters: 31 - Words: 207,617 - Reviews: 245 - Favs: 526 - Follows: 605 - Updated: 6/30 - Published: 4/17/2022 - Clark K./Kal-El/Superman, Master Chief/John-117
The Past Awakens by magnusvictor
Strike Group 51 seeks out the source of the unfamiliar alien machinery which allowed them to shield their latest offensive from the Union's Farseers. Instead of the expected Shell industrial center or R&D facility, they find a colossal Ring floating in space... and aboard it encounter the unexpected cause of the ancient Soia Empire's destruction.
Crossover - Halo & Outsider - Rated: T - English - Adventure/Sci-Fi - Chapters: 19 - Words: 136,033 - Favs: 3 - Follows: 4 - Published: 6/29 - [Talon, Alex J.] OC - Complete
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: 5 - Words: 46,952 - Reviews: 23 - Favs: 144 - Follows: 184 - Updated: 6/29 - Published: 4/16 - OC, V, Johnny Silverhand, Rogue A.
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: 1 - Words: 12,007 - Reviews: 3 - Favs: 21 - Follows: 33 - Published: 6/28 - Arthas Menethil, Jaina Proudmoore, Tyrande Whisperwind, OC
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