Halo Crossovers
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The New Age by xShadowMord3thx reviews
When a Spartan comes out from cryo to a battle scarred ship, he stumbles upon a artifact that changes everything he has ever known. Fact may be bent for better story line.
Crossover - Halo & Rosario + Vampire - Rated: M - English - Sci-Fi/Romance - Chapters: 4 - Words: 7,281 - Reviews: 11 - Favs: 16 - Follows: 22 - Updated: 5/1/2013 - Published: 2/16/2013 - Mizore S.
Welcome Home by Chris000 reviews
A young man from Mobius sees that there is a world beyond his own that he needs to explore, and that this world holds the answers that he long seeks. Christopher Ashton knows that Earth is out there for him, but it is a place he knows nothing about. This is a story about finding your way in the world, making new friends, and learning where you truly belong.
Crossover - Sonic the Hedgehog & Halo - Rated: T - English - Adventure/Sci-Fi - Chapters: 3 - Words: 15,999 - Reviews: 1 - Favs: 4 - Follows: 1 - Updated: 4/30/2013 - Published: 4/3/2013
My Little Halo: Harmony Evolved by Arcane Howitzer reviews
When a Top Secret package activates on board the UNSC Cruiser Guam, turning the entire crew into ponies, it sets on coarse a collision of universes, ideologies, and forces that could save humanity in their darkest hour, or doom peaceful Equestria to burn.
Crossover - My Little Pony & Halo - Rated: T - English - Sci-Fi/Fantasy - Chapters: 21 - Words: 85,786 - Reviews: 137 - Favs: 81 - Follows: 86 - Updated: 4/30/2013 - Published: 2/4/2012
Halo-Mass Effect: Trials and Tribulations by Embodiment of Rage reviews
Humanity has expanded throughout the galaxy with the use of slip-space and the mass-relay network. They have endured the tests of a space-faring society but something lurks in the dark. The Covenant have dominated more races and have discovered Humanity, declaring their genocidal campaign. Is there any hope that Humanity will survive? Not your normal crossover. Multiple view points
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Suspense - Chapters: 1 - Words: 3,569 - Reviews: 123 - Favs: 97 - Follows: 117 - Published: 4/30/2013
My Emerald Child by darkangelwp reviews
HaloXHarry Potter crossover! Five year old Harry Potter wishes for a family. Well, he got one. Say hello to, Arcana, child of the Sangeili! BEING REWRITTEN!
Crossover - Harry Potter & Halo - Rated: T - English - Adventure - Chapters: 11 - Words: 24,064 - Reviews: 409 - Favs: 822 - Follows: 948 - Updated: 4/29/2013 - Published: 7/5/2007 - Harry P., Master Chief/John-117
Mass UNSC by Mr. Connolly reviews
Two years after the Human-covenant war, Humanity struggles to rebuild in its own little portion of the Galaxy, when Pluto starts to light up
Crossover - Halo & Mass Effect - Rated: K - English - Chapters: 1 - Words: 236 - Reviews: 7 - Favs: 13 - Follows: 18 - Published: 4/28/2013 - Tali'Zorah, Zaal'Koris
Project Unity by shadow mew2 reviews
Ace is back and he has a team of some of the most powerful soldiers in the galaxy other than Master Chief. Mission: serch a tomb on the last halo ring. But what's inside might threaten time and space itself. Can Ace and his team nutralise the threat? We'll see about that
Crossover - Metroid & Halo - Rated: T - English - Adventure/Sci-Fi - Chapters: 1 - Words: 876 - Reviews: 2 - Published: 4/27/2013
Lone wolf: Into the night by Skrillexes reviews
Noble Six was a lone wolf. Commander Shepard was a survivour. Put them together and all you get is a crazy crew, massive weapons and wild ride dropping into hell. Buckle up, into the night.
Crossover - Halo & Mass Effect - Rated: T - English - Chapters: 5 - Words: 2,330 - Reviews: 6 - Favs: 19 - Follows: 27 - Updated: 4/24/2013 - Published: 3/13/2013 - SPARTAN-B312/Noble Six, J. Garson
Advent Of the Reclaimer Empire by WaaagMaster reviews
110,000 years have passed since the fall of the Ancient Human Empire. When the Great War at last came to a close it would lay down the foundations of something that has not been seen in over 100,000 years, a resurgent people, a revived empire. But one final test remains, the Reclamation has at last begun... [AU]
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 3 - Words: 10,734 - Reviews: 50 - Favs: 171 - Follows: 203 - Updated: 4/24/2013 - Published: 4/6/2013 - C. Halsey, T. Lasky, Saren A., Shepard
The Tide of War by HASARAS reviews
Alagaesia has never seen a time as dark as this. Galbatorix's private army, the Artisans, have launched a massive campaign against the new Alagaesia. All hope for the land is just about lost-of course, that's when the UNSC frigate Nighthawk crash-lands in the Spire.
Crossover - Halo & Inheritance Cycle - Rated: T - English - Adventure/Sci-Fi - Chapters: 2 - Words: 3,530 - Reviews: 8 - Favs: 5 - Follows: 8 - Updated: 4/24/2013 - Published: 6/26/2012
The End of Time by Metal4k reviews
The Flood, the worst threat any civilization has ever faced, has returned. With their galaxies destroyed, Commander Shepard and John 117, find themselves in a galaxy far far away. Will the Republic believe these new comers? Can they unite before its to late? As the Universe's secrets unfold, the Flood is revealed to be worse than anyone ever imagined...
Crossover - Mass Effect & Halo - Rated: T - English - Horror/Sci-Fi - Chapters: 6 - Words: 36,536 - Reviews: 59 - Favs: 67 - Follows: 79 - Updated: 4/23/2013 - Published: 11/25/2012
Not Always Lost by TheSuperintendent reviews
Jorge-052 gave his life to save Reach. After all, Slipspace "bombs" are supposed to eliminate targets, not transport them to another galaxy far away. Now Noble Five and what remains of a marine fire team must make it back to the fight before it ends, but not before witnessing the shifting sands of the Galactic Republic.
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi - Chapters: 4 - Words: 7,214 - Reviews: 45 - Favs: 59 - Follows: 89 - Updated: 4/23/2013 - Published: 2/10/2013 - Jorge-052/Noble Five
Limits by Andrithir reviews
John's life has always been a brutal cycle of warfare. Now trapped in a different universe, the same still applies. Adopted by: Indomiraptor
Crossover - Halo & Justice League - Rated: T - English - Adventure/Sci-Fi - Chapters: 7 - Words: 21,374 - Reviews: 124 - Favs: 172 - Follows: 194 - Updated: 4/20/2013 - Published: 12/1/2012 - Master Chief/John-117, Bruce W./Batman, Diana of Themyscira/Wonder Woman
Crossing the Boundary by Insanity Lord reviews
This is a massive, insane crossover story that follows the lives of John 'Master Chief' Halsey, his wife Cortana, their family, and the friends of that family. Expect much chaos and zanity mixed in with an ongoing story set in a dimensional crossroads. Oh just read it...I suck at summaries.
Crossover - X-overs & Halo - Rated: T - English - Humor - Chapters: 1 - Words: 1,979 - Reviews: 2 - Published: 4/19/2013 - Master Chief/John-117, Cortana
The Defenders by Nick1319 reviews
It's been over a year since the Human-Covenant war ended. The UNSC March to Destiny was charged with exploring the edges of what used to be Human territory. But what happens when they find something totally new to them? Will they be able to ride out the storm that they've been caught in? What new threats will the UNSC face... and will they be alone? Rated M for safety.
Crossover - Aliens/Predator & Halo - Rated: M - English - Mystery/Adventure - Chapters: 1 - Words: 2,808 - Reviews: 2 - Favs: 3 - Follows: 3 - Published: 4/13/2013
Spartan Plus Vampire by RememberReach117 reviews
Un Spartan es transportado al universo de R V! Como afectara su llegada?
Crossover - Halo & Rosario + Vampire - Rated: T - Spanish - Adventure/Humor - Chapters: 4 - Words: 9,842 - Reviews: 35 - Favs: 12 - Follows: 13 - Updated: 4/13/2013 - Published: 6/21/2011
Luna's revenge by Roamingmoon reviews
Luna's tired of nopony caring for her. Time to break the rules. One shot.
Crossover - My Little Pony & Halo - Rated: T - English - Chapters: 2 - Words: 1,251 - Reviews: 18 - Favs: 10 - Follows: 5 - Updated: 4/12/2013 - Published: 2/25/2012 - Princess Luna/Nightmare Moon, Master Chief/John-117 - Complete
Awakening by 11092889 reviews
My own go at a Halo-Mass effect crossover. including a Female commander Shepard, Master chief, Cortana and a rather underused Spartan, Linda-058. I plan to go from about mid way though mass effect 2 up to the end of mass effect 3. So, Spoilers abound. dropping by, having a read and leaving a review would be much appreciated. Rating may change later on but no solid plans as of yet.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure - Chapters: 2 - Words: 11,357 - Reviews: 95 - Favs: 186 - Follows: 280 - Updated: 4/11/2013 - Published: 4/8/2013 - Master Chief/John-117, Cortana, Linda-058, J. Garson
Darkest Before the Dawn The Story of the Third Interstellar War by dracon117 reviews
this is the story of the Earth/Minbari war but with the UNSC post Human/Covenant war instead of the Earth Alliance, introducing humanity to the B5 universe.
Crossover - Babylon 5 & Halo - Rated: M - English - Sci-Fi/Suspense - Chapters: 4 - Words: 6,773 - Reviews: 63 - Favs: 132 - Follows: 193 - Updated: 4/10/2013 - Published: 12/28/2012
red vs blue rekindeled by spartan of choas reviews
red and the blue's are back at blood gulch after the events of season 10, and fire team delta is sent to check out there... activities
Crossover - Halo & Red vs. Blue - Rated: T - English - Adventure/Fantasy - Chapters: 1 - Words: 765 - Reviews: 6 - Favs: 3 - Follows: 5 - Published: 4/9/2013
Gateway by FlaviusAugustus reviews
My first fanfic. The survivors of the great Human-Covenant war awaken something that has the power to cross realities, and cause a series of events that even the Forerunners could not have anticipated. Halo/Star Wars Clone Wars era
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 18 - Words: 64,516 - Reviews: 100 - Favs: 160 - Follows: 162 - Updated: 4/8/2013 - Published: 6/25/2010
Best of Spartans and Spectres by Ordo Warrior reviews
With the Fall of Reach nearly complete, the Covenant sends it full might to eliminate one Spartan. With a little of John-117's luck rubbing off to another hyper-leathal soldier, she finds a new fate awaiting her beyond Reach.
Crossover - Halo & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 44 - Words: 147,327 - Reviews: 211 - Favs: 379 - Follows: 348 - Updated: 4/7/2013 - Published: 1/6/2012 - SPARTAN-B312/Noble Six, J. Garson - Complete
Mass Effect: Intertwined History by Artificial Care reviews
Just 10 years after the Interplanetary War, after Humanity is unified under the UNSC, do they meet the Turian Hierarchy in the First Contact War. After being introduced to the Galactic Community and technology which will allow them to colonize other systems, what effect will the early Halo Humanity have on the galaxy? Will they be prepared for the trials to come?
Crossover - Halo & Mass Effect - Rated: M - English - Mystery/Sci-Fi - Chapters: 3 - Words: 11,729 - Reviews: 193 - Favs: 319 - Follows: 417 - Updated: 4/7/2013 - Published: 4/4/2013
Assimilation by Favored Son reviews
In the cold void of space, a sinister presence makes itself known on a derelict UNSC ship.
Crossover - Halo & StarCraft - Rated: T - English - Suspense - Chapters: 1 - Words: 1,207 - Reviews: 10 - Favs: 12 - Follows: 7 - Updated: 4/6/2013 - Published: 3/19/2013 - Complete
Halo: Red vs Blue by Hawki reviews
Oneshot: Red vs. Blue. Or Orange vs. Blue really, considering the different colour schemes of the Didacts. But looking at his Iso counterpart, sometimes the Ur-Didact truly did see red. Or at least felt a level of rage that was associated with such a colour...
Crossover - Halo & Red vs. Blue - Rated: K+ - English - Angst/Drama - Chapters: 1 - Words: 982 - Reviews: 3 - Favs: 5 - Follows: 1 - Published: 4/6/2013 - Didact, IsoDidact/Bornstellar Makes Eternal Lasting - Complete
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