Halo Crossovers
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Final Mission by shadow016A
Continuing with 16A's story, 16A goes on a journey to rid the galaxy of ALL flood
Crossover - Spyro the Dragon & Halo - Rated: M - English - Adventure/Sci-Fi - Chapters: 1 - Words: 276 - Published: 4/5/2014
Where The Lost Have Gone by FUN 2 KNOW reviews
Having survived the slip-space anomaly, one Spartan ll wakes into a new world; a world on the precipice of damnation and even more desperate than humanity's crisis with the Covenant. Follow the tale of Spartan Li-008, as he makes his mark on this world, where he will face trials and hardships that will push his skills and humanity to the edge. Spartans never die. They're just MIA.
Crossover - Halo & Walking Dead - Rated: M - English - Sci-Fi/Suspense - Chapters: 5 - Words: 15,040 - Reviews: 54 - Favs: 136 - Follows: 171 - Updated: 4/5/2014 - Published: 12/14/2013
The Doctor, the TARDIS, and the Demon by H4-T3 reviews
Jane-139 is a SPARTAN, a genetically modified, cybernetically enhanced, heavily armoured killing machine. The Doctor is an alien, the last of his kind, with a time-and-space machine, who travels anywhere, anywhen, to help people and worlds in dire need. What happens when the warrior and the healer meet? Little do either of them know, Jane is hiding a secret. Even from herself.
Crossover - Doctor Who & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 6 - Words: 6,292 - Reviews: 12 - Favs: 23 - Follows: 26 - Updated: 4/2/2014 - Published: 2/20/2014 - Amelia P./Amy, 11th Doctor, TARDIS, Rory W.
The Last Spartan (Version 20) by DinoJake reviews
After a long deserved rest, the Master Chief awakens in a whole new galaxy.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 3 - Words: 14,553 - Reviews: 239 - Favs: 131 - Follows: 134 - Updated: 4/1/2014 - Published: 4/1/2013
What about Mother by Colster reviews
The Master Chief's life is turned upside down when a teenager claiming to be the daughter of an old friend shows up on his doorstep asking for help. Metroid/Halo Crossover AU.
Crossover - Metroid & Halo - Rated: T - English - Sci-Fi - Chapters: 4 - Words: 3,002 - Reviews: 31 - Favs: 29 - Follows: 60 - Updated: 3/31/2014 - Published: 6/19/2013 - Samus A., Master Chief/John-117
Falling Space by Strider117 reviews
A turian fleet stumbles on a human colony in the wake of the Covenant War. What will ensue?
Crossover - Halo & Mass Effect - Rated: M - English - Humor/Sci-Fi - Chapters: 2 - Words: 5,515 - Reviews: 56 - Favs: 211 - Follows: 297 - Updated: 3/30/2014 - Published: 1/24/2014
Halo: Heresy of Roanoke by Battle Bruva Volks reviews
Roanoke, once thought to be destroyed by the burning fleets of the Covenant has now been discovered to escape the wrath of the Covenant. With newly discovered intelligence that points to a frightening cause for it's survival SPARTAN team Jaeger descends to find out why Roanoke remains unharmed. What is consider a normal recon turns into a fight against Traitors and Daemons!
Crossover - Warhammer & Halo - Rated: T - English - Horror/Mystery - Chapters: 3 - Words: 12,869 - Reviews: 8 - Favs: 12 - Follows: 13 - Updated: 3/29/2014 - Published: 1/3/2014 - Inquisition, Serin O./Serin-017
Artificial Intelligence by The Chuckinator reviews
Tails has created a new invention that turned Sonic into an artificial intelligence in order to see what Eggman is up to. They soon get a visit from Shadow, who tells them that the Black Arms are approaching and are ready for war, and eventually discover that the Black Arms have teamed up with another alien species called the Covenant, and are searching for something called Halo.
Crossover - Sonic the Hedgehog & Halo - Rated: T - English - Sci-Fi - Chapters: 23 - Words: 23,448 - Reviews: 12 - Favs: 6 - Follows: 5 - Updated: 3/28/2014 - Published: 3/13/2014 - Complete
Halo: The Human Effect by MJOLNIR117 reviews
Following the Human-Covenant War, Humanity finds a buried device that allows trans-galactic travel far faster than Slipspace. It was heralded as the greatest scientific find in Human history; the rest of the galaxy simply calls it the Mass Effect. Now mankind needs to forge a new place for itself among the stars.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 20 - Words: 67,131 - Reviews: 452 - Favs: 705 - Follows: 814 - Updated: 3/27/2014 - Published: 7/12/2010
Tesseracts Ain't Got Nothin' On Me by TitaniumJack reviews
Delta Squad is sent to recover a mysterious object, but they soon learn they aren't the only ones after it! Completely devoid of a Canon Timeline. Continuation of a non-published story.
Crossover - Halo & Gears of War - Rated: T - English - Sci-Fi - Chapters: 13 - Words: 13,876 - Reviews: 38 - Favs: 36 - Follows: 50 - Updated: 3/27/2014 - Published: 4/13/2012 - Master Chief/John-117, Marcus F., Dominic S., D. Baird
For Thy Mantle Reloaded by Primordial Soul reviews
"We fought, we bled, we died for our inheritance. We were Gods, and we were finally ready to pass down our Mantle. Then we were betrayed, vanquished from the stars and blotted from history. We have learned from our mistakes. We understand why the Precursors did what they did. We are the Reclaimers, and we will ensure that you face true retribution for your actions." ABANDONED
Crossover - Halo & Mass Effect - Rated: T - English - Suspense/Mystery - Chapters: 25 - Words: 113,587 - Reviews: 1068 - Favs: 537 - Follows: 569 - Updated: 3/27/2014 - Published: 11/17/2012
SPARTANs Never Die by Tolkienfanatic reviews
A Spartan team is a formidable fighting force. They can turn the tide in battles, stop invasions, save entire planets. But in a new universe, against a new enemy, their strength and prowess may not be enough...
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 5 - Words: 15,703 - Reviews: 64 - Favs: 114 - Follows: 170 - Updated: 3/27/2014 - Published: 6/20/2013 - C. Halsey, Lucy-B091, Fred-104, J. Garson
Forward Into Darkness by MrNebula117 reviews
Good day to you all who may happen upon this. Haven't seen any Halo/RWBY crossovers. So i thought, why not. The story follows a battle hardened ODST squad gearing up for a simply intel op. Or so they think. Dropping into hell is what they do.
Crossover - Halo & RWBY - Rated: T - English - Sci-Fi/Adventure - Chapters: 2 - Words: 2,411 - Reviews: 1 - Favs: 10 - Follows: 11 - Updated: 3/26/2014 - Published: 3/25/2014 - Ruby R., Weiss S., Blake B., Yang X.L.
A New Home? by Allard-Liao reviews
The Storm Covenant Remnant retreats to Hesduros to lick their wounds after their defeat at the Second Battle of Requiem. However, someone else wants to use those coordinates, as well. Set after the current (as of 12/14/2013) end of the Spartan Ops storyline of Halo 4 and between Master of Orion 2 and 3.
Crossover - Halo & Master of Orion - Rated: T - English - Sci-Fi - Chapters: 2 - Words: 3,985 - Reviews: 2 - Favs: 3 - Follows: 6 - Updated: 3/26/2014 - Published: 12/14/2013
Four Spartans of the Post-Apocalypse by M306117 reviews
Spartans never die. They're just missing in action. A ruse by ONI to maintain morale as the Covenant presses ever inwards to Earth but for some, it's the truth. In 2545, four Spartans on a routine mission vanish without a trace according to UNSC records. The reality? They simply traded one fight for another, one fought between a Bull and a Bear over a single city.
Crossover - Fallout & Halo - Rated: T - English - Adventure/Sci-Fi - Chapters: 16 - Words: 35,831 - Reviews: 98 - Favs: 166 - Follows: 157 - Updated: 3/25/2014 - Published: 6/29/2013 - Complete
Infinity Adventures by number970910 reviews
A Batarian Pirate fleet stumbles upon a dorment relay in a previously unknown system. What's more interesting is that they find a world made of glass. Let's see what unfolds next.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 3 - Words: 7,744 - Reviews: 21 - Favs: 54 - Follows: 79 - Updated: 3/24/2014 - Published: 1/26/2014
Legendary: The Sons Of Chaos by Lelouch Vi Britannia Stadfelt reviews
They say that legends are a key to unlocking our past as well as things long forgotten traded secrets stories to keep you up at night. Men and Monster cower at the Legend surrounding the sons of the three all over the universe U.N.S.C are the elite in wars and war strategies and were trained by the best. What happens when earth needs the U.N.S.C? Let's find out!
Crossover - Halo & Percy Jackson and the Olympians - Rated: T - English - Sci-Fi/Romance - Chapters: 2 - Words: 3,523 - Reviews: 3 - Favs: 19 - Follows: 24 - Updated: 3/24/2014 - Published: 1/3/2014 - Master Chief/John-117, Nico A., Percy J., Jason G.
Metroid Prime: 117 by Greenpizzaman13 reviews
(This is my first attempt at making a Fanfiction, so...If after you read PLEEASE review and give me feedback. To be honest I'm flying blind here with the story plot, and if you like it great, if not give me some pointers. Thanx! This is a new Universe in which the Halo series and Metroid saga are combined. It will consist of criteria from both stories!)
Crossover - Metroid & Halo - Rated: T - English - Adventure - Chapters: 3 - Words: 1,341 - Reviews: 13 - Favs: 5 - Follows: 5 - Updated: 3/23/2014 - Published: 3/17/2014
The mysterious Spartan by GenerlPerseusJackson reviews
After the Giant war something unexpected happens Perseus Jackson goes missing. Or is he what if he has been there the whole time with his friends not knowing. AN Okay I do not own PJO, HOO, or Halo.
Crossover - Halo & Percy Jackson and the Olympians - Rated: T - Dutch - Adventure/Mystery - Chapters: 7 - Words: 3,155 - Reviews: 9 - Favs: 41 - Follows: 48 - Updated: 3/23/2014 - Published: 3/15/2014 - Percy J., Poseidon, Zeus
Halo: Contact Earth by Icesquall reviews
After the end of Halo 3, Master Chief and Cortana ends up drifting towards a Forerunner planet, but it's not Requiem, they receive aid from an unexpected source and are sent their way back to Earth, but a rare glitch happens where they end up in the land of zombies,
Crossover - Halo & Highschool of the Dead - Rated: T - English - Adventure/Sci-Fi - Chapters: 4 - Words: 8,911 - Reviews: 49 - Favs: 154 - Follows: 194 - Updated: 3/22/2014 - Published: 1/17/2014
Coming Together by Loo Dig-E reviews
As the UNSC is nearing defeat at the hands of the Covenant, the Allies intervene to prevent the Council from potentially gaining a new ally, and avert the need for another total galactic war.
Crossover - Halo & Mass Effect - Rated: M - English - Adventure/Tragedy - Chapters: 4 - Words: 13,192 - Reviews: 6 - Favs: 15 - Follows: 12 - Published: 3/19/2014 - OC
For the Want of A Coin by The Ardent Warrior-Poet reviews
John had always known what he could do, if given a challenge. He'd known his capabilities ever since he'd been a child, let alone a SPARTAN. But now, after surviving a trip he honestly shouldn't have, he's stuck on a planet with no orders, no manual, and no amount of training that could've prepared him for the situation he's now faced with... a Mindoir farm girl named Shepard.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 1 - Words: 1,658 - Reviews: 11 - Favs: 25 - Follows: 48 - Published: 3/19/2014
The Last Relic by A Shade of Her reviews
Earth is no stranger to visits by non-humans . . . But now they meet the One who saved them from a damnation worse than death . . . NOTE: This was begun *before* Halo 4 was released, and as I no longer have access to an Xbox 360, this is in no way meant to be supplemental to and/or part of the Halo canon.
Crossover - Halo & Avengers - Rated: M - English - Sci-Fi - Chapters: 10 - Words: 10,793 - Reviews: 32 - Favs: 45 - Follows: 55 - Updated: 3/18/2014 - Published: 10/16/2012 - Librarian - Complete
Venom meets the Gravemind: Two Symbiotes meet! by BlueLion1996 reviews
What if Venom ended up in High Charity and met the infamous Gravemind. What will happen? Read to find out!
Crossover - Spider-Man & Halo - Rated: K - English - Chapters: 1 - Words: 341 - Reviews: 4 - Favs: 5 - Follows: 3 - Published: 3/17/2014 - Eddie B./Venom/Toxin II, Gravemind - Complete
UNSC - Lunar War by NewtypeAuthor346 reviews
Four Years after the Human - Covenant wars and one month after the Composer was oblitherated, The Lunarians Planned an Invasion on Earth and Mars, Luckily, UNSC Infinity was on course to the Main Solar system until they found out for what's going on. (Hiatus)
Crossover - Halo & Touhou Project - Rated: K+ - English - Sci-Fi/Adventure - Chapters: 12 - Words: 14,774 - Reviews: 67 - Favs: 45 - Follows: 51 - Updated: 3/17/2014 - Published: 5/11/2013 - Master Chief/John-117, T. Lasky, W. n. Toyohime, W. n. Yorihime
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