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Mass Effect: The New Journey by Arashi the Solar Phoenix reviews
During a Joint Deployment, the UNSC Infinity and Her Sangheili allies are suddenly thrown into a new Galaxy, and end up near Charon before the Systems Alliance discovers the Charon Relay. Alliances are forged and how will the galaxy react to an aggressive humanity that not only doesn't use Mass Effect technology, but will not let anyone stand in their way of expansion? AU PreME1
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 12 - Words: 115,650 - Reviews: 819 - Favs: 1,215 - Follows: 1,529 - Updated: 6h ago - Published: 1/26/2014
Halo 3:The Rookie by death7559 reviews
The Rookie. One of those strong, silent, types. After finding himself trapped in a strange alien universe, The Rookie joins on with commander Shepard to hunt down a rogue SPECTRE who may just know The Rookie.
Crossover - Halo & Mass Effect - Rated: T - English - Chapters: 5 - Words: 3,672 - Reviews: 27 - Favs: 43 - Follows: 79 - Updated: 8h ago - Published: 4/1/2014 - Rookie, Shepard (F), Garrus V., Tali'Zorah
In the Age of the Stars by Kamzil118 reviews
Humanity is forced to leave Earth and into the stars before it makes allies with various alien species only to be threatened by two ancient enemies of the galaxy with only one purpose, to wipe out all life. However, humanity and their allies will be the ones to save it, to protect it, and to avenge it. No matter the cost.
Crossover - Call of Duty & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 6 - Words: 18,436 - Reviews: 15 - Favs: 47 - Follows: 57 - Updated: 12h ago - Published: 1/24 - Gideon
The Dragon Queens by Mystborn reviews
A brief history, and eventual story of magic meets science.
Crossover - Elder Scroll series & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 2 - Words: 6,371 - Reviews: 4 - Favs: 6 - Follows: 7 - Updated: 16h ago - Published: 2/28
Cole's Effect by Flattened reviews
The RFI gave Cole an amazing power, enough to defeat the beast, but it came with the cost of every single conduits life. Except Cole's, who used that power, who channelled it into his escape. Yes bad summary but this is my first so don't judge to hard and please review.
Crossover - Mass Effect & inFAMOUS - Rated: T - English - Sci-Fi - Chapters: 7 - Words: 11,038 - Reviews: 4 - Favs: 20 - Follows: 26 - Updated: 3/1 - Published: 12/23/2014 - Shepard (F), Cole MacGrath
Front Lines by Church -Caboose- Shepard reviews
A war may be won through policy, money, or technology, but battles are won by the people fighting. Be they soldiers or civilians, all lives are changed during the bloodiest of conflicts. The Reaper war proves no exception, as those on the front lines of Earth battle and fight for survival. A task that will require allies from every possible source.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 4 - Words: 12,193 - Reviews: 2 - Favs: 5 - Follows: 4 - Updated: 2/28 - Published: 2/14 - D. Anderson, Major Coats, OC
The Infinity Effect by creamofwheat2311 reviews
After discovering a Precursor artifact, the UNSC Infinity and the Sangheili Shadow of Intent are transported to a universe unlike anything they have ever seen, and forced into a war against a foe they never could have imagined: the Reapers. Alliances are founded, friendships are formed, and decisions are made that will change this galaxy forever. Post Halo 4, Pre ME3. AU
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 17 - Words: 173,103 - Reviews: 1521 - Favs: 1,648 - Follows: 2,063 - Updated: 2/28 - Published: 10/9/2013 - Master Chief/John-117, T. Lasky, Admiral Hackett, Shepard (M)
A Little Old Fashioned by Archer83 reviews
Captain Steve Rogers thought his last sacrificial act would be to save a country from destruction. He was wrong. Thanks to the selfless acts of a few, he will be given the chance to prevent the annihilation of an entire galaxy. Welcome to 2185, Mr. Rogers.
Crossover - Mass Effect & Captain America - Rated: T - English - Sci-Fi/Adventure - Chapters: 4 - Words: 43,220 - Reviews: 62 - Favs: 133 - Follows: 206 - Updated: 2/28 - Published: 10/23/2013 - Shepard (F), Steve R./Capt. America
Undying by TheNewIdea reviews
Peter Quill, Rocket, Gamora, Drax, and Groot are sitting around the table having dinner when they receive a desperate call for help from the Normandy, looking for a cure for a deadly disease. As they search for the impossible, they come across some interesting developments-the Normandy is 172 years in the past, with no clear way of getting back. and that's not even half of it.
Crossover - Guardians of the Galaxy & Mass Effect - Rated: T - English - Friendship/Drama - Chapters: 2 - Words: 6,980 - Reviews: 5 - Favs: 4 - Follows: 11 - Updated: 2/28 - Published: 1/15 - Garrus V., Mordin S., Peter Quill/Star-Lord
Where Titans Tread by JLake4 reviews
In the eyes of the Prophets, the Galaxy is a place wherein the Gods strode freely before the Great Journey. Entering into the galactic community challenged them, and when Shepard awakes they find that the Galaxy is not some haven for the ghosts of Gods long dead. It is Where Titans Tread. [Sequel to Divergent Pasts]
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Suspense - Chapters: 4 - Words: 14,923 - Reviews: 11 - Favs: 19 - Follows: 24 - Updated: 2/28 - Published: 2/13
Second Chances by Commander Deember reviews
The Reaper threat looms over the galaxy, but Commander Shepard isn't alone in the fight. Begins during ME 1 after the mission to Virmire.
Crossover - Mass Effect & EVE Online - Rated: T - English - Chapters: 8 - Words: 8,012 - Reviews: 2 - Favs: 6 - Follows: 7 - Updated: 2/28 - Published: 2/22
Mass Effect: Twin Assassins by TheShepard'sFlock reviews
A war even more ancient than the founding of Citadel space itself, a rogue Spectre with an army of geth, a threat that has been present for millions of years, and only one man has the ability to stop it. Two young Assassins join the Normandy crew in a fight for survival, who knows if they'll survive it to the end. I suck at summaries, anyways read and enjoy!
Crossover - Mass Effect & Assassin's Creed - Rated: T - English - Adventure - Chapters: 5 - Words: 15,431 - Reviews: 1 - Favs: 3 - Follows: 4 - Updated: 2/28 - Published: 2/10
Amalgamation by loraine95 reviews
Shepard wakes up in Ferelden after destroying the reapers. As she unravels where she is and how to get back home, she uncovers shocking truths about how she's already connected to Ferelden, the Blight, and the dark spawn.
Crossover - Mass Effect & Dragon Age - Rated: T - English - Romance/Suspense - Chapters: 21 - Words: 48,066 - Reviews: 78 - Favs: 75 - Follows: 168 - Updated: 2/28 - Published: 6/24/2012 - Kaidan A., Shepard (F), Alistair
Biomass Effect by Beastrider9 reviews
All life on Earth had been consumed by Blacklight. With no Biomass to feed on, Blacklight had to evolve, adapt, and grow. Now a collective Council of Aliens discovers the existence of such a life form. How do the aliens see a form of life that is viral, how they deal with it, what are the consequences to the galaxy of such a race existing at all.
Crossover - Mass Effect & Prototype - Rated: T - English - Sci-Fi - Chapters: 13 - Words: 78,421 - Reviews: 795 - Favs: 1,295 - Follows: 1,538 - Updated: 2/28 - Published: 8/8/2014
Glitch In The System by Freaks Inc reviews
Hesitant steps. Familiar. Object enters left field of vision. Human. Female. Scarred face plates. Black head strings. Blue optics. Stares. Stare back.
Crossover - Transformers/Beast Wars & Mass Effect - Rated: T - English - Hurt/Comfort/Suspense - Chapters: 6 - Words: 9,355 - Reviews: 21 - Favs: 41 - Follows: 71 - Updated: 2/27 - Published: 9/30/2013 - Shepard (F)
Mass Effect: Spec Ops by VR Commando ATA reviews
While the Shepard siblings lead the charge against the Reapers, hundreds of thousands of troops fight back against the Reapers as well. These are the stories of those soldiers, the operations of the normal ground troops, and the assaults by the Spec Ops Commandos.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure - Chapters: 5 - Words: 14,785 - Reviews: 11 - Favs: 4 - Follows: 7 - Updated: 2/27 - Published: 9/28/2014 - OC
Resonnance by SounDemoN reviews
Crossover of Halo, Half-Life and Mass Effect, AU for all three. 27th Century Humanity encounters the Reapers and the Council races, while dabbling in teleportation technology, unknowing of the slumbering beast they would awaken. Rated K for the time being, will be upgraded as needed. I own none of the used existing fictional universes/characters/tech/stuff. Will add a cover later.
Crossover - Halo & Mass Effect - Rated: K - English - Sci-Fi/Adventure - Chapters: 2 - Words: 15,646 - Reviews: 6 - Favs: 27 - Follows: 39 - Updated: 2/27 - Published: 2/23
halo : A house of cards by A unkown Gnome reviews
After the decisive battle at the Helios nine nebula, the UNSC Infinity has pursued Jul mdama's damaged Flagship, the song of retribution far into uncharted space.However a slip space anomaly throws the Infinity dozens of light-years of course forcing it to crash on the Asari home world, Thessia.however Humanity has been to this world before, as ever ONI lurks in the shadows
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 1 - Words: 6,278 - Reviews: 6 - Favs: 24 - Follows: 35 - Published: 2/27 - C. Halsey, Serin O./Serin-017, Benezia
Avatar of Victory by James Golen reviews
The Cycle of the Avatar has held for thousands of years. Other Cycles can stretch far, far longer. An A:tLA/Mass Effect Cross-Over
Crossover - Avatar: Last Airbender & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 67 - Words: 1,587,137 - Reviews: 487 - Favs: 386 - Follows: 372 - Updated: 2/27 - Published: 5/8/2012 - Shepard (F)
Mass Effect: Clash of Worlds by Lord Maximus reviews
What if the Reapers and the species of the Mass Effect universe came from another galaxy? What if the Reapers planned to colonize other galaxies to establish the first Trans-Galactic Network between the Milky Way and Triangulum Galaxies? What would be the result? MASS CROSSOVER between multiple TV shows and games.
Crossover - TV X-overs & Mass Effect - Rated: T - English - Chapters: 34 - Words: 192,437 - Reviews: 113 - Favs: 97 - Follows: 101 - Updated: 2/26 - Published: 4/7/2013
Mass Effect: Gathering Storm by Meluch reviews
When a Prothean Beacon is unearthed on Eden Prime, Commander Shepard and Lieutenant Rainbow Dash are sent to oversee its transfer to the Citadel. When a rogue Spectre ruins everything, a galactic manhunt starts that heralds the beginning of the end.
Crossover - My Little Pony & Mass Effect - Rated: T - English - Adventure/Romance - Chapters: 7 - Words: 19,841 - Reviews: 6 - Favs: 7 - Follows: 6 - Updated: 2/26 - Published: 2/13 - [Shepard (F), Liara T'Soni] [Twilight Sparkle, Gilda]
Mass Effect: Contact by FuzyDr4G0NZ reviews
In 2560, just years after the end of hostilities between the Earth based UNSC and the New Colonial Alliance, the Industrial colony of Falkland is slowly being turned into a Fortress as a defense against the perceived Colonial threat. But within months of his transfer to the colony, Lance Corporal David Campbell will find out first hand whether or not the fortress will hold.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 9 - Words: 24,093 - Reviews: 76 - Favs: 137 - Follows: 186 - Updated: 2/26 - Published: 5/8/2014 - OC
Desolation by hunter 139 reviews
An ODST awakes in a Pelican crash site on an unknown planet and tries to uncover the fate of his squad. Instead he uncovers something better left buried. Based off of an old Halo 3 machinima. Multi-crossover.
Crossover - Halo & Mass Effect - Rated: T - English - Mystery/Suspense - Chapters: 5 - Words: 7,654 - Reviews: 7 - Favs: 4 - Follows: 9 - Updated: 2/26 - Published: 2/19
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: 31 - Words: 266,360 - Reviews: 652 - Favs: 501 - Follows: 636 - Updated: 2/26 - Published: 8/28/2012
Reclaiming the Past by Mesnakesta reviews
There once was a great empire that spanned the stars, life prospered under their careful tending. Sadly, all good things must come to an end. They left one of their own to help later civilizations. He was the most powerful of them all, and his fury is unrivaled. Shepard and co. investigate a strange signal, and find a relic of the great empire that even the Reapers feared.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 8 - Words: 20,338 - Reviews: 123 - Favs: 210 - Follows: 247 - Updated: 2/25 - Published: 12/16/2014 - Master Chief/John-117, Garrus V., Tali'Zorah, Shepard (M)
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