Halo and Mass Effect Crossovers
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A New Battleground by AlphaGuardian reviews
The remains of Team NOBLE go MIA during their mission to deliver The Package to the Pillar of Autumn. They find themselves staring down the singular threat to another galaxy: the Collectors. Follow Six as she teams up with Commander Shepard to destroy the Collectors and the Reapers. (Part 2 is up! Go look for it.)
Rated: T - English - Sci-Fi/Adventure - Chapters: 19 - Words: 60,260 - Reviews: 94 - Favs: 205 - Follows: 197 - Updated: 12/8/2014 - Published: 5/24/2014 - Cortana, SPARTAN-B312/Noble Six, Shepard - Complete
The Mantle Beyond The Eons by SuperW1998 reviews
After 100,000 years of Atonement, the Forerunners arrived at the Mass Effect Galaxy. The Reapers threaten every organic life, and in the hands of the Iso-Didact is the fate of his people or this new galaxy. Set in Pre-Mass Effect 3. I do not own the Halo series or the Mass Effect Universe.
Rated: T - English - Sci-Fi - Chapters: 10 - Words: 40,564 - Reviews: 189 - Favs: 292 - Follows: 322 - Updated: 11/28/2014 - Published: 5/21/2014 - IsoDidact/Bornstellar Makes Eternal Lasting, Admiral Hackett, Illusive Man, Shepard
The Mass Effect of One Spartan by Iron Wolf1x reviews
One Spartan and his A.I. are thrown into the Mass Effect world. Read as the appearance of one man can change many things for the future of everyone
Rated: M - English - Chapters: 1 - Words: 3,129 - Reviews: 1 - Favs: 12 - Follows: 22 - Published: 11/27/2014 - OC
From Subject Zero to The Beast by demonic hellfire reviews
When the Cerberus ship meant to take Subject Zero to Pragia also takes a 'Prothean' crystal with them. No one could foresee the consequences that action has as the crystal causes the ship to enter slip-space and crash land on Reach. This is the story of Jack-666.
Rated: M - English - Adventure - Chapters: 1 - Words: 2,315 - Reviews: 4 - Favs: 16 - Follows: 28 - Published: 11/10/2014
Commander in Chief by Eclipse-Luna reviews
Commander Shepard has stopped the Prothean slaves, the Collectors. Meanwhile, The Master Chief and Cortana stop the Didact from destroying humanity and pay the price of heroism. Death, or do they? How will Chief and Cortana react with this different past, while holding their secrets close. Post ME2/Post H4
Rated: T - English - Sci-Fi - Chapters: 17 - Words: 51,577 - Reviews: 108 - Favs: 125 - Follows: 147 - Updated: 11/2/2014 - Published: 9/18/2013 - [Tali'Zorah, Shepard] Master Chief/John-117, Cortana - Complete
Amnesia by Alba Meredith Quill
Shepard durante una mision se golpea la cabeza quedando inconsiente, al despertar solo tiene recuerdo de su vida conyugal con una Ex Oficial de la Unsc ahora medico de la Normandía, Lauren la ex oficial y ahora medico de la Normadía tiene una feliz vida Conyugal con James Vega, ahora con una alinza con la Unsc y nuevos enemigos Lauren debe tomar el mando de la Normandía.
Rated: T - Spanish - Sci-Fi/Romance - Chapters: 2 - Words: 3,035 - Favs: 1 - Updated: 10/30/2014 - Published: 10/22/2014 - Carter-A259/Noble One, OC, Shepard, OC
Mass Effect Halo Crossover Special concept paper by Freedom Guard reviews
Yet another concept paper for a fic to be made in the years to come...but with one serious twist. Comments, suggestions, and critics are welcome. Flames can go and rot in hell for all I care.
Rated: M - English - Sci-Fi/Adventure - Chapters: 1 - Words: 1,228 - Reviews: 37 - Favs: 15 - Follows: 9 - Published: 10/22/2014 - OC - Complete
Halo Mass Effect Timline by Sharp47 reviews
Just a new timeline saw there were really no fics of contact before the war with covenant so I decided to put this up
Rated: T - English - Chapters: 1 - Words: 2,004 - Reviews: 11 - Favs: 12 - Follows: 12 - Published: 10/9/2014
Time and again by Nutjob117 reviews
We did it again. We found another alien race(group of) and they decide to attack us, again. And once again WE WILL NOT LIE DOWN AND DIE! WE WILL FIGHT THEM HARDER THAN EVER! and this time we have friends.
Rated: T - English - Adventure/Sci-Fi - Chapters: 1 - Words: 759 - Reviews: 14 - Favs: 69 - Follows: 86 - Published: 9/14/2014
Feet first into Hell by Golf November reviews
Wir betrügen den Tod um seinen rechtmäßigen Sieg. Niemand kann uns besiegen. Wir springen in die Hölle mit den Füßen voran, in dem Wissen, dass wir aufsteigen werden.
Rated: M - German - Chapters: 7 - Words: 24,532 - Reviews: 13 - Favs: 15 - Follows: 14 - Updated: 9/9/2014 - Published: 8/4/2013
Mass Effect: GHOSTs by VR Commando ATA reviews
Sequel to Mass Effect Johnson. Centered on the newest ONI Spec Ops group, the GHOSTs. The best of the best of the best that humanity has to offer, they have the best tech, the best armor, and the best weapons, they use them all in their missions to defend humanity and its allies. the GHOSTs will show the galaxies why the Reapers and Flood aren't the only things to fear. Sequel's up
Rated: T - English - Sci-Fi - Chapters: 10 - Words: 30,056 - Reviews: 22 - Favs: 36 - Follows: 40 - Updated: 9/5/2014 - Published: 7/7/2014 - OC, OC - Complete
The Devil's Own by Cain O'Phelan reviews
When a company of ODSTs drop on New Mombasa to reinforce the ground operations against the Covenant, they are caught in an inter-atmospheric Slipspace jump. Where that jump leads will take those men from notoriety, to legend.
Rated: M - English - Sci-Fi/Adventure - Chapters: 10 - Words: 36,963 - Reviews: 157 - Favs: 372 - Follows: 445 - Updated: 9/1/2014 - Published: 5/16/2013 - J. Garson
Mass Effect X Halo Spartan Dawn by Freedom Guard reviews
Yet another creation of mine to help ease my mind, I hope that everyone does not mind seeing this one. I know there are a lot of crossover with Mass Effect and Halo, but no sense not trying a bit of it in my free time. Story on Ice, Updating all NON Halo stories is priority now.
Rated: M - English - Sci-Fi/Adventure - Chapters: 13 - Words: 233,980 - Reviews: 929 - Favs: 1,457 - Follows: 1,313 - Updated: 8/27/2014 - Published: 10/8/2010 - Master Chief/John-117
Galactic Federation of Interstellar Nations: Codex by Epic Zealot Productions reviews
The combined knowledge on the GFIN members and history.
Rated: T - English - Sci-Fi - Chapters: 1 - Words: 2,749 - Reviews: 9 - Favs: 13 - Follows: 14 - Published: 8/26/2014
The Last Reaper War by Longsword Hero reviews
The Reapers have been annihilating the Citadels armies and fleets one battle after another. The Reapers are thought to be invincible and that no force can stand against them. But what happens when they encounter a new race? One whose resolve and strength outweighs anything they have faced before. One who will not settle to drive them out but destroy them.
Rated: M - English - Sci-Fi/Suspense - Chapters: 3 - Words: 10,861 - Reviews: 39 - Favs: 222 - Follows: 288 - Updated: 8/24/2014 - Published: 8/2/2014
Uphold thy mantle by Stairman reviews
They have survived, staving off the parasite and triumphing against their foes the forerunners, after a millennia of struggle and conflict. Now free from the oppression of their greatest enemies, they seek to protect the mantle. However the storm has not passed. As those cloaked in shadow conspire, so do the drums of war beat, and the galaxy shall be bathed in fire and bloodshed.
Rated: K - English - Sci-Fi/Adventure - Chapters: 1 - Words: 3,836 - Reviews: 22 - Favs: 61 - Follows: 90 - Published: 8/23/2014 - Liara T'Soni, U. Wrex, Tali'Zorah, OC
Crossover by Jerim reviews
They have been taken for a reason, ripped out of their worlds and put together for a suicide mission none of them can face alone. Good or bad, if they can't work together, none of them will make it home alive. (9multiple crossover mash-up featuring characters from halo, mass effect, portal, skyrim, half-life, star-wars, assassin's creed ))
Rated: T - English - Adventure - Chapters: 1 - Words: 725 - Reviews: 9 - Favs: 4 - Follows: 4 - Published: 8/20/2014
UNSC Rising by Tansey56 reviews
Humanity has endured. The Human Covenant war is over, now the long task of rebuilding looms ahead. Fragile relations and strong bonds will be tested when unbelievable things are discovered. Can humanity endure once again? Pre-ME through ME3 AU!
Rated: K - English - Sci-Fi/Adventure - Chapters: 2 - Words: 2,337 - Reviews: 32 - Favs: 98 - Follows: 161 - Updated: 8/18/2014 - Published: 6/28/2013
Mass Effect Johnson the OC backstories by FPSLiverpool reviews
these are a collection of backstory's for my OC's in VR commando ATA's mass effect Johnson story, swearing a plenty.
Rated: M - English - Chapters: 4 - Words: 3,996 - Reviews: 2 - Favs: 1 - Updated: 8/10/2014 - Published: 7/15/2014 - OC, Garrus V., U. Wrex, Joker
The Reclaimer Effect: First Contact by StarSerpent reviews
Humanity thought that they were done with war when the Human-Covenant War ended. They were wrong. It only heralded a new age of wars larger and more brutal than before. A humanity used to war meets the Citadel Council, a coalition of alien races that haven't seen war in millennia, thinking themselves secure in their position of power. CANCELED, Spiritual Successor in Invicta Series
Rated: T - English - Sci-Fi/Adventure - Chapters: 4 - Words: 24,272 - Reviews: 192 - Favs: 444 - Follows: 576 - Updated: 8/7/2014 - Published: 5/26/2014
A Wolf in Shepard's Clothing by KillerGypsyFish reviews
Noble Six is struggling to get to the rally point to deliver Cortana to Captain Keys, but when the wounded spartan passes out and awakens on some sort of spacecraft. He discovers that he's in a reality where the UNSC don't exsist. Will he get back to his reality? Will he make nice with the crew? And what happened to Cortana? Based off of Kyurem's Soul's, Involuntary Intrusions.
Rated: T - English - Adventure - Chapters: 5 - Words: 3,852 - Reviews: 17 - Favs: 50 - Follows: 71 - Updated: 8/4/2014 - Published: 7/20/2014 - Cortana, SPARTAN-B312/Noble Six, J. Garson
Double Trouble by Hughes H015 reviews
Tonya B-312 is saved from her death by a team of Spartans. That is where she meets Kelly S-087. While they are on patrol in the tunnels under Castle Base they find a what looks like a slip space portal. They are sucked into it before they have time to tell anybody about it and they find themselves on Eden Prime while Shepard is looking for the Prothean Beacon.
Rated: M - English - Sci-Fi/Adventure - Chapters: 3 - Words: 5,692 - Reviews: 4 - Favs: 11 - Follows: 17 - Published: 8/1/2014
Massively Effective Halo by THATGUYWHOMAKESHORRIBLESTORIES reviews
Do you happen to know what the exact mass of a Halo array is? Well, neither do I, but I've heard that they're pretty effective weapons!
Rated: K - Afrikaans - Western/Suspense - Chapters: 1 - Words: 3,112 - Reviews: 20 - Favs: 11 - Follows: 15 - Published: 8/1/2014 - S. Palmer, Clone Shepard
Sierra009 Archives by Te Ne'tra Mand'alor reviews
Unearthed 200,000 years past his expiration date. Sierra-009 finds himself thrust into a Universe full of conflicting ideals. Where he is forced to take up a new role 009 fights to restore order and justice among the stars as a the leader of one of the most feared race in history - The Mandalorians. NOTE: Sort of evolved into an über crossover of Science Fiction.
Rated: M - English - Sci-Fi/Adventure - Chapters: 9 - Words: 71,376 - Reviews: 44 - Favs: 140 - Follows: 149 - Updated: 7/29/2014 - Published: 9/18/2012 - SPARTAN-B312/Noble Six, J. Garson
N-117 by jcrighter reviews
After going through the Forerunner Interstellar Bridge and defeating Saren together, Chief and Shepherd must find the Focus Icon and the second Bridge. Only problem is that the Collectors have the Icon in their base. Chief must help Shepherd assemble a team strong enough to travel through the Omega-4 Relay if he ever hope of finding the Icon and returning home.
Rated: T - English - Sci-Fi/Adventure - Chapters: 3 - Words: 15,004 - Reviews: 12 - Favs: 41 - Follows: 54 - Updated: 7/28/2014 - Published: 7/18/2014 - Master Chief/John-117, Cortana, Shepard
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