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Mister Holmes I presume?- A side story to Halo: Justice Evolved by We'retheDesperateMeasures-ODST
Just when being trapped in an alternate reality in which superheroes exist was not bad enough, two of the Dawn's crewmembers were inadvertently sent back in time to Victorian Era Britain at the height of the Ripper slayings. Well, it couldn't be all bad since they're meeting and working with the legendary sleuth himself.
Crossover - Halo & Young Justice - Rated: T - English - Crime/Mystery - Chapters: 1 - Words: 1,564 - Favs: 5 - Follows: 7 - Published: 10/31/2018 - [OC, OC]
Broken Moon, Bloody Sky by BumblebeeN7 reviews
It's finished. The leaders of the Covenant dead, the Flood gone, and Halo destroyed once again. Stranded in deep space, the Chief has no idea how long they'll be out here. All he can hope is for a quick rescue and the war to finally be over. But he has a feeling it's just getting started...
Crossover - Halo & RWBY - Rated: T - English - Sci-Fi/Adventure - Chapters: 3 - Words: 5,402 - Reviews: 43 - Favs: 108 - Follows: 190 - Updated: 10/29/2018 - Published: 1/4/2017 - Master Chief/John-117, Cortana, Team RWBY
The Roads of War by Sierra.BN312 reviews
Our galaxy is home to billions of stars, each star could hold new life, and every life holds a new story. Commander Jane Shepard attempts to rally the galaxy against the Reaper threat, but a distress signal leads her to discover more than what she bargained for.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 6 - Words: 74,095 - Reviews: 138 - Favs: 730 - Follows: 1,030 - Updated: 10/25/2018 - Published: 4/30/2017 - Master Chief/John-117, Cortana, Shepard
A Shifted Star by Duzzit reviews
Reach, the greatest fortress of Humanity, and last bastion before Earth. Torn from all it has known and brought to a crossroads between potential friend and foe, mere strength alone will not be enough for it to thrive.
Crossover - Babylon 5 & Halo - Rated: T - English - Sci-Fi - Chapters: 6 - Words: 18,391 - Reviews: 29 - Favs: 94 - Follows: 124 - Updated: 10/25/2018 - Published: 4/16/2018 - Master Chief/John-117
Every Alternative Preferred by J.G.Lukasiewicz1919 reviews
A Side Story of a roleplay series between the Empire of Japan, New Decius, and Union of British North America on the Nationstates Forums set in FT(Future Tech)
Crossover - Halo & NationStates - Rated: M - English - Sci-Fi/Fantasy - Chapters: 3 - Words: 11,497 - Reviews: 1 - Favs: 5 - Follows: 3 - Updated: 10/24/2018 - Published: 5/3/2018 - Master Chief/John-117, Arbiter, Prophet of Truth, T. Hood
Un encuentro menos violento by Whynotman 234 reviews
Una linea de tiempo según yo, un tanto mas orgánica entre ambos universo.
Crossover - Halo & Mass Effect - Rated: K+ - Spanish - Sci-Fi - Chapters: 2 - Words: 3,812 - Reviews: 2 - Favs: 10 - Follows: 10 - Updated: 10/21/2018 - Published: 10/14/2018
Exiles by Temujin the Obliterator reviews
After a failed coup the clone army and there generals are exiled. One ship comes upon a planet under going a covenant attack and decides to intervene.
Crossover - Star Wars & Halo - Rated: T - English - Adventure - Chapters: 7 - Words: 41,538 - Reviews: 24 - Favs: 62 - Follows: 73 - Updated: 10/18/2018 - Published: 4/27/2018 - Commander Cody, Commander Bly
Warframe Halo by Salem4ver reviews
With the Sentients subdued but not defeated, the Grineer where now the main focus of Tenno Yumi Yada, Hiro Nonaka, Futaba Kido, and Toya Katayuma. But what the young Tenno did not count on was getting thrown an unknown planet that was taken over by the Covenant and meet the UNSC while fighting for their lives on what is left of Yorktown
Crossover - Halo & Warframe - Rated: M - English - Adventure/Romance - Chapters: 3 - Words: 7,800 - Reviews: 3 - Favs: 8 - Follows: 14 - Updated: 10/12/2018 - Published: 10/8/2018
This is Heavy by mrcookieman36 reviews
What it Marty Mcfly on that faithful day back in October 25, 1985 when he was getting away from the Libyans didn't send him to the year 1955. Instead he somehow messed up the time coordinates and end up in the year October 25, 2556. Oops i suppose. Rated T for some language, but it might change in the near future.
Crossover - Back to the Future & Halo - Rated: T - English - Humor/Adventure - Chapters: 11 - Words: 53,116 - Reviews: 10 - Favs: 25 - Follows: 27 - Updated: 10/11/2018 - Published: 1/30/2017 - Complete
Commander in Chief by Yoshtar reviews
When Supreme Commanders show up in the UNSC Pillar of Autumn as it flees the destruction of Reach and learn of the Covenant menace to Humanity, what is a good Commander supposed to do? Why, Von Neumann them to death of course.
Crossover - Halo & Supreme Commander - Rated: T - English - Sci-Fi - Chapters: 1 - Words: 2,754 - Reviews: 11 - Favs: 46 - Follows: 63 - Published: 10/11/2018 - Master Chief/John-117, A. J. Johnson, J. Keyes, Cortana
The Mission Stays the Same by EternalCanadian reviews
During a deployment gone wrong, a fireteam of SPARTAN-III's finds themselves flung into an unfamiliar, hostile world. As divine and ancient forces clash, the five SPARTANS will be tested and forced to become what they were always meant to be to ensure the survival of the human species.
Crossover - Warhammer & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 1 - Words: 2,522 - Reviews: 20 - Favs: 54 - Follows: 78 - Published: 10/10/2018 - Imperial Guard, Inquisition, Orks, OC
Merged Galaxy Part 1: Tenuous Pacts by Slipspace Anomaly reviews
Nations collide as 2 alternate versions of the Milky Way Galaxy are joined into 1. As members of the SGC and the UNSC struggle to establish peaceful relations, a new threat emerges. One that includes new enemies from each of their pasts. Co-written with Jon Harper.
Crossover - Stargate: SG-1 & Halo - Rated: T - English - Chapters: 21 - Words: 164,926 - Reviews: 219 - Favs: 332 - Follows: 423 - Updated: 10/8/2018 - Published: 1/30/2017 - H. Maybourne, OC, Master Chief/John-117, C. Halsey
Simple Missions That Aren't Simple by MerToTheCado reviews
The Galactic Federation and the United Nation Space Command are at war and both Samus and the Master Chief are dragged in but when the reckless Space Pirates and the ruthless Covenant join forces, they are forced to work together or watch Earth perish. Rated T for later on the story. Please rate and leave suggestions.
Crossover - Metroid & Halo - Rated: T - English - Sci-Fi/Romance - Chapters: 29 - Words: 63,645 - Reviews: 120 - Favs: 115 - Follows: 146 - Updated: 10/8/2018 - Published: 7/5/2013 - [Samus A., Master Chief/John-117] Adam M., Cortana
Monsters Thunder in the Sky by WDO345 reviews
Covenant Battle Group discovers a Forerunner World where the Shingeki No Kyojin World takes place in. The year is 850, and the Covenant launches an extermination campaign to capture the Forerunner world. Story Idea. Creative Test. Up For Adoption.
Crossover - Halo & Attack on Titan/進撃の巨人 - Rated: T - English - Sci-Fi - Chapters: 1 - Words: 2,491 - Reviews: 4 - Favs: 12 - Follows: 14 - Published: 10/7/2018
Vilgax's hidden desires by halofan2112 reviews
Vilgax attacks Master Chief's ship because he needs something important.
Crossover - Halo & Ben 10 - Rated: T - English - Adventure - Chapters: 5 - Words: 991 - Reviews: 89 - Favs: 1 - Follows: 1 - Updated: 10/6/2018 - Published: 10/24/2017 - Master Chief/John-117, Vilgax
Alternate Past, Uncertain Future Mk II by Follower38 reviews
Co-written with aDarkOne History, a single event, can alter so much, let alone two. The San'Shyum are no more. The Krogan Empire stands strong. Humanity is now a giant among the stars. With three Galactic Superpowers in play, will an encounter see a new Golden Age, or an Era of War? (Chapters 1-12 being rewritten)
Crossover - Halo & Mass Effect - Rated: T - English - Adventure - Chapters: 33 - Words: 279,720 - Reviews: 767 - Favs: 744 - Follows: 852 - Updated: 10/6/2018 - Published: 8/28/2012
RWBY and HALO 5 by Salem4ver reviews
Takes place after Halo 5 and somewhere during Volume 2 of RWBY. Ruby's long-lost Aunt Marylin Rose finally returns to Remnant but with some people that are Ruby can consider her extended family. But things mention in this story are spoilers for those you haven't seen Volume 1 through 5 so you have been warned!
Crossover - Halo & RWBY - Rated: M - English - Family/Romance - Chapters: 5 - Words: 13,455 - Reviews: 10 - Favs: 35 - Follows: 44 - Updated: 10/5/2018 - Published: 9/28/2018 - [Master Chief/John-117, OC] Team RWBY, Team JNPR
Halo: Fluff Contact by R.Adm.Johansen reviews
2559: ONI discovers information of a covenant remnant attack on a peaceful world inhabited by a Tier-4 civilization. The UNSC immediately responds by sending a battle group...
Crossover - Halo & Zootopia - Rated: T - English - Chapters: 1 - Words: 1,008 - Reviews: 8 - Favs: 20 - Follows: 20 - Published: 10/3/2018
The Lone ODST: First Feet Into Gamindustri by Ace-man 165 reviews
As an ODST team was dropped into New Mombasa City where the Covenant Ship is located, it immediately jumped into slipspace and The Rookie was knocked out by the blast. When he woke up, he noticed that he wasn't in New Mombasa, but rather a different world, encountering new foes and new allies. Will the Rookie work with his new friends and find a way home?[Takes place in Re;Birth 2]
Crossover - Halo & Hyperdimension Neptunia - Rated: M - English - Adventure/Friendship - Chapters: 29 - Words: 127,371 - Reviews: 59 - Favs: 104 - Follows: 134 - Updated: 10/3/2018 - Published: 1/9/2017 - [Rookie, IF] Histoire, Nepgear/Purple Sister
The World Could Always Use More Heroes by mcknight93 reviews
After facing Cortana again, the Master Chief finds himself thrown in an unknown city. The city itself had been attacked, but the Chief still moves ahead to rendezvous with Blue Team. Hoping to get a better idea of his situation, he comes across a variety of colorful characters. Some of them bring up the name of Overwatch.
Crossover - Halo & Overwatch - Rated: T - English - Sci-Fi/Adventure - Chapters: 2 - Words: 14,225 - Reviews: 35 - Favs: 134 - Follows: 181 - Updated: 10/1/2018 - Published: 9/23/2018 - Master Chief/John-117, J. Fawkes/Junkrat, Mako R./Roadhog
A Spartan in Westeros (A Song of Ice and Fire X Halo Crossover) by Agailius reviews
When the Forward Unto Dawn lands in the North, it sets the stage for untold repercussions which will ripple throughout the whole of Westeros. With civil war threatening to tear the land apart, and an entirely more dire threat arising beyond the Wall, John and Cortana take it upon themselves to again protect the whole of mankind; from both it's own demons... and those beyond.
Crossover - Halo & A song of Ice and Fire - Rated: M - English - Sci-Fi/Fantasy - Chapters: 21 - Words: 128,153 - Reviews: 1711 - Favs: 4,217 - Follows: 4,828 - Updated: 10/1/2018 - Published: 6/3/2014 - Master Chief/John-117, Cortana, Jon S., Eddard S./Ned
UNSC OPERATION: ORESTES LIBERATION by SmokeTinyTom reviews
UNSC OPERATION: ORESTES' LIBERATION details the extraordinary exploits of the UNSC's efforts during the Titan War on the Imperial Forge World of Orestes and how their actions effected the Sabbat Worlds Crusade and the Imperium as a whole. 03/08/2022: Still alive, just no drive to write.
Crossover - Warhammer & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 7 - Words: 21,834 - Reviews: 49 - Favs: 62 - Follows: 73 - Updated: 10/1/2018 - Published: 9/20/2015 - Imperial Guard, Space Marines, Emile-A239/Noble Four, OC
Mass Effect: First Contact by Kralizec314 reviews
The year is 2597, ten years after the Insurrection came to an end, and the UNSC now reign supreme over all Humans in the galaxy. But now, the Outer Colony of Harvest has come under attack from a conquering alliance of alien races; the UNSC must resist them and claim it's place in the galaxy.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 5 - Words: 23,040 - Reviews: 138 - Favs: 367 - Follows: 523 - Updated: 9/29/2018 - Published: 3/28/2016
The Leader and Warrior by KtyouVsWriting reviews
Sangheili Arbiter Thel 'Vadam has fought the Flood and The Prophet of Truth. Commander Jane Shepard has fought the Reapers and the Collectors. Both are leaders, warriors, and survivors, but while the Arbiter knows the price of galactic genocide, Shepard does not yet understand it, nor does she understand it as the Arbiter understands it. But she will be forced to understand.
Crossover - Halo & Mass Effect - Rated: M - English - Adventure/Romance - Chapters: 48 - Words: 218,161 - Reviews: 774 - Favs: 912 - Follows: 1,060 - Updated: 9/29/2018 - Published: 10/13/2014 - Arbiter, Shepard
The Misadventures of Burn Squad by HaloGoji75 reviews
Join Burn Squad as they travel across every RWBY universe imaginable, including some of your favorite fanfics.
Crossover - Halo & RWBY - Rated: T - English - Sci-Fi/Humor - Chapters: 5 - Words: 23,158 - Reviews: 14 - Favs: 12 - Follows: 16 - Updated: 9/27/2018 - Published: 4/6/2016 - OC, Team RWBY
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