Halo and Mass Effect Crossovers
Filters
630 | « Prev Page 1 .. 4 5 6 7 8 9 10 17 .. Last Next »

Reaching out by Mage-Alia reviews
When one story ends another begins. Shepard finds herself sitting against a bolder, dying as she stares up at an unfamiliar sky...
Rated: T - English - Sci-Fi - Chapters: 1 - Words: 2,216 - Reviews: 6 - Favs: 39 - Follows: 38 - Published: 11/23/2018 - Shepard - Complete
SSDD by K2JC reviews
After an anomaly in Slipspace sent the Assault Carrier, Power Overwhelming, off course and into another dimension where everything is a whole lotta different. One thing stayed the same. Humanity is once more threatened by genocidal aliens. Is this really a thing? Where Humans are constantly attacked by alien assholes? Well... Same Shit, Different Day.
Rated: M - English - Adventure - Chapters: 8 - Words: 32,427 - Reviews: 18 - Favs: 118 - Follows: 154 - Updated: 11/15/2018 - Published: 8/29/2018 - J. Garson, OC
Isolation by DwemerSteelBlade reviews
SPARTAN-IIIs Icarus and Aura are transported to the Citadel after a botched operation on a Covenant world. They've been trained to fight Insurrectionists and Covenant, but what about the Reapers?
Rated: T - English - Adventure/Humor - Chapters: 1 - Words: 1,864 - Reviews: 2 - Favs: 5 - Follows: 18 - Published: 11/12/2018
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.
Rated: M - English - Sci-Fi/Adventure - Chapters: 6 - Words: 74,095 - Reviews: 137 - Favs: 721 - Follows: 1,024 - Updated: 10/25/2018 - Published: 4/30/2017 - Master Chief/John-117, Cortana, J. Garson
Un encuentro menos violento by Whynotman 234 reviews
Una linea de tiempo según yo, un tanto mas orgánica entre ambos universo.
Rated: K+ - Spanish - Sci-Fi - Chapters: 2 - Words: 3,812 - Reviews: 2 - Favs: 10 - Follows: 10 - Updated: 10/21/2018 - Published: 10/14/2018
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)
Rated: T - English - Adventure - Chapters: 33 - Words: 279,720 - Reviews: 766 - Favs: 742 - Follows: 850 - Updated: 10/6/2018 - Published: 8/28/2012
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.
Rated: M - English - Sci-Fi - Chapters: 5 - Words: 23,040 - Reviews: 138 - Favs: 369 - 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.
Rated: M - English - Adventure/Romance - Chapters: 48 - Words: 218,161 - Reviews: 774 - Favs: 904 - Follows: 1,054 - Updated: 9/29/2018 - Published: 10/13/2014 - Arbiter, Shepard
The Obligatory Coffee Scene by Church Shepard reviews
War never changes Sometimes, no matter your race or creed, you forget what's worth fighting for. War does that to everyone. It's vital to take a moment, any moment, and remember how each of those little moments we experience every day, make life worth living. And wars worth winning. Short story taken from my main xover
Rated: T - English - Humor/Friendship - Chapters: 1 - Words: 2,278 - Reviews: 2 - Favs: 7 - Follows: 6 - Published: 9/25/2018 - Arbiter, Garrus V., Shepard, Javik - Complete
The Cycle by Church Shepard reviews
Fighting off extinction Shepard must find the legacy left to humanity by the Forerunners. And find a way to defeat both the Reapers and the Prophet of Truth from gaining the power to destroy all sentient life in the Galaxy.
Rated: T - English - Sci-Fi/Adventure - Chapters: 46 - Words: 151,020 - Reviews: 146 - Favs: 78 - Follows: 102 - Updated: 9/25/2018 - Published: 8/29/2012 - Arbiter, Prophet of Truth, Shepard, OC
Blood of Honor and Tears of Plasma by Delta Sigma72 reviews
When the Sublime Transcendence was destroyed by a Nova Nuclear Space Mine, a fleet in transition to Slip-space had its navigation systems overloaded, the result was that the fleet was sent of to Sanghelios. Or is it? Join Fleetmaster Vadamee and his sister in the Mass Effect universe, as they show the council races what the Blood of Honor means.
Rated: M - English - Sci-Fi/Adventure - Chapters: 2 - Words: 2,668 - Reviews: 4 - Favs: 27 - Follows: 38 - Updated: 9/23/2018 - Published: 9/8/2018
Top of the Mantle by ZedtheUndeadTed reviews
In another universe, in another time, humanity faces total annihilation at the hands of an unstoppable alien threat. Colonies razed, populations slaughtered, entire worlds burned to ashes and glass. Yet hope perseveres. In one of their darkest hours, a Harbinger of Salvation comes, from another universe, from another time, shepherding a peculiar flock.
Rated: M - English - Sci-Fi/Adventure - Chapters: 2 - Words: 2,953 - Reviews: 7 - Favs: 33 - Follows: 49 - Updated: 9/10/2018 - Published: 9/4/2018
Collectors at Dawn by jacksld850 reviews
The Master Chief and Cortana find themselves in an alternate reality and in contact with a mysterious black ops organization. Events soon spiral out of their control as they're forced into another battle for another humanity's survival.
Rated: M - English - Adventure/Sci-Fi - Chapters: 17 - Words: 84,849 - Reviews: 100 - Favs: 443 - Follows: 606 - Updated: 9/7/2018 - Published: 1/20/2017 - Master Chief/John-117, Cortana, Miranda L., Shepard
The Strange Ship by regularmother reviews
In a hunt for raw materials for their people, Quarian explorers open a new mass relay. What awaits them on the other side is nothing they could have ever expected. Pre-Mass Effect 1, Post-Halo 4; AU only where necessary to mash two universes together and create something resembling a coherent storyline.
Rated: M - English - Sci-Fi - Chapters: 9 - Words: 48,490 - Reviews: 285 - Favs: 1,064 - Follows: 1,569 - Updated: 9/4/2018 - Published: 10/25/2016
Salvation by Z0n3theDaMn3d reviews
The Knowledge of sin is the beginning of Salvation. Über 40 Jahre nach dem Ende des Krieges gegen die Allianz, zieht ein neuer Sturm am Rande des menschlichen Reiches auf. Werden die Kolonien des Linwood Sektors diesen standhalten können oder werden sie brennen wie einst Harvest?
Rated: M - German - Sci-Fi/Adventure - Chapters: 9 - Words: 59,872 - Reviews: 9 - Favs: 19 - Follows: 32 - Updated: 9/4/2018 - Published: 10/3/2016 - T. Hood, Councilor Tevos
HaloMass Effect: A New War by WildCard3323 reviews
Humanity is in turmoil, locked within the vicious civil war known as the Insurrection. With the CMA and UNSC forces at their limit trying to quell the insurgency, will they have the strength to fight back against a new enemy, one from beyond the stars? That answer is up for debate, though if anyone of humanity's soldiers have anything to say about it, that answer will be yes.
Rated: M - English - Sci-Fi/Adventure - Chapters: 6 - Words: 20,867 - Reviews: 34 - Favs: 89 - Follows: 120 - Updated: 9/1/2018 - Published: 5/23/2018
Changing Universes (OLD VERSION) by GamerDroid56 reviews
As a Spartan, it was my duty to protect Humanity, whatever the cost. Now, the stakes have been raised as I no longer have to protect just Humanity, but the entire galaxy and all of its inhabitants. At the side of the First Human Spectre of this new Galaxy, I will succeed in defending the galaxy, even if it results in my death...
Rated: T - English - Sci-Fi/Friendship - Chapters: 12 - Words: 13,164 - Reviews: 20 - Favs: 60 - Follows: 94 - Updated: 7/22/2018 - Published: 10/7/2016 - OC, J. Garson, Illusive Man, Miranda L.
Heroes O' the Multiverse by SpawnofAnarion reviews
The death of a minor demon tears a hole in warp space, sending the Master Chief, a Dominion Ghost, an Inquisitor of the Imperium of man and their companions into the Reaper-verse. On the bright side, Shepard gains some powerful allies. Contains some language, decent amounts of violence, and several OCs.
Rated: T - English - Adventure/Sci-Fi - Chapters: 4 - Words: 18,053 - Reviews: 36 - Favs: 142 - Follows: 205 - Updated: 7/11/2018 - Published: 1/23/2014 - Master Chief/John-117, J. Garson
Elites of the Masses by Heart In The Shadows reviews
An Elite found his way into the Mass effect universe and more than once. He has grown fond of his new life, though memories still haunt him. When he finds himself on the Normandy, everything gets rather interesting for him, but for better or worse? Rewrite started. Please enjoy.
Rated: M - English - Humor/Romance - Chapters: 2 - Words: 16,999 - Reviews: 36 - Favs: 42 - Follows: 42 - Updated: 6/29/2018 - Published: 12/10/2011
Jack-312 by OfficialWeedTesterGuy reviews
A survivor of Reach fights the Covenant, or what's left of it, on an unknown space station. One-shot.
Rated: T - English - Sci-Fi/Fantasy - Chapters: 1 - Words: 1,976 - Reviews: 4 - Favs: 9 - Follows: 5 - Published: 6/27/2018 - Complete
A Tale of two Mirandas by AzureSpider reviews
Just a fun little Fusion Fic one-shot I did based on the coincidence of how these two popular Sci-Fi shooter series both have a lovely brunette named Miranda in them. Set in a world where the UNSC and Citadel races have been at war with the Covenant, and a chance encounter with a woman who shares her name changes Miranda Keyes' life forever. Easter eggs abound.
Rated: T - English - Sci-Fi/Romance - Chapters: 1 - Words: 6,600 - Reviews: 4 - Favs: 18 - Follows: 8 - Published: 6/20/2018 - [Miranda K., Miranda L.] [Kelly-087, Shepard] - Complete
Not Your Fault by CommanderAuri reviews
An AU bit in an RP with fallen-warrior1023 where everything goes wrong.
Rated: K+ - English - Sci-Fi/Angst - Chapters: 1 - Words: 1,391 - Reviews: 1 - Favs: 1 - Follows: 1 - Published: 6/16/2018 - Complete
Touch by CommanderAuri reviews
A shared little moment in time between two soldiers. Edit: To clarify, this was a little piece I wrote for a friend of mine in a crossover RP we've been doing.
Rated: K+ - English - Sci-Fi/Romance - Chapters: 1 - Words: 492 - Reviews: 1 - Favs: 1 - Published: 6/16/2018 - Complete
The Avalon Federation Codex by DragonheartODST reviews
A full codex dedicated to the characters, cultures, places, objects, times, etc., related to the Concordian Cycle starting from Book One: Dawn of a New Age. Will be constantly updated alongside the books to fit with the details of the series. Please read the series first if you wish to gain a greater understanding. On Hiatus
Rated: T - English - Sci-Fi - Chapters: 7 - Words: 62,821 - Reviews: 57 - Favs: 47 - Follows: 43 - Updated: 6/12/2018 - Published: 11/30/2016
Unknown Variables by DwemerSteelBlade reviews
SPARTAN-A073 and B158 are thrown into the Mass Effect universe after a freak slip-space accident. They're mysterious and shady outcasts, keeping to themselves. This might be normal to them, but to the Shepard's crew, they're unknown variables. (REWRITE: ISOLATION). DISCONTINUED, ALRIGHT?
Rated: M - English - Sci-Fi/Adventure - Chapters: 1 - Words: 759 - Reviews: 5 - Favs: 8 - Follows: 20 - Published: 6/2/2018 - Complete
630 | « Prev Page 1 .. 4 5 6 7 8 9 10 17 .. Last Next »