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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: 74 - Words: 1,735,558 - Reviews: 531 - Favs: 427 - Follows: 404 - Updated: 4h - Published: 5/8/2012 - Shepard (F)
Temporal Incursion by Bylackbre reviews
When an experiment concerning advanced technology goes wrong for Cerberus, what will happen to the galaxy as this new threat rises and how will Commander Shepherd stop them if it's possible?
Crossover - Mass Effect & Destiny - Rated: T - English - Adventure/Sci-Fi - Chapters: 1 - Words: 4,250 - Reviews: 2 - Favs: 1 - Follows: 2 - Published: 8h
CSA : Plains of Glory by I-IRONMAN-I reviews
(Multi-crossover) The Galactic War has passed. Some years after his disappearance, Kholo returns in a rampant and deadly search for an ancient Forerunner artifact. However, there is something much more sinister at work and his actions will carry much weight in the end.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 7 - Words: 24,567 - Reviews: 2 - Favs: 5 - Follows: 8 - Updated: 10h - Published: 1/12/2014 - Arbiter, OC, Saren A.
Avatar: The Galaxy Keys Book 7: The Eternity Clock by D4lekCrusher reviews
After the death of Anakin Skywalker, Avatar Alex launches a final battle against Cerberus and the Illusive Man, meanwhile Ahsoka Tano has a decision to make, in what is her final challenge. She must give up the person she loves most in order to survive her fate with the Eternity Clock...
Crossover - Mass Effect & Star Wars: The Clone Wars - Rated: T - English - Adventure/Sci-Fi - Chapters: 19 - Words: 15,865 - Reviews: 2 - Favs: 1 - Follows: 1 - Updated: 20h - Published: 9/18/2014
Are We Alone by JIMMYJAMSTER728 reviews
What is gods were real? Many have wondered what would happen if they were proven to exist, what cultures would do at the sight of these all powerful beings that appeared from nowhere. How would those that once worshiped them acts. How would their allies perceive them knowing that they have gods that exists. What changes in fate would occur, if one of these gods appeared on Elysium.
Crossover - Bleach & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 1 - Words: 8,156 - Reviews: 28 - Favs: 60 - Follows: 72 - Published: 7/6
Twist of Fate by TenBackwards
With the Sol Gate finally completed, the GTVA can finally achieve the dream of a reunion with Earth. But of course, things don't always go according to plan...
Crossover - FreeSpace 2 & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 2 - Words: 3,617 - Favs: 15 - Follows: 19 - Updated: 7/6 - Published: 7/4
Council's notes on Humanity by 5 Coloured Walker reviews
This is the Citadel Codex as it applies to Humans in the [TBD] world, who's current stories include: Busy Stars This however is not the codex of general things however, not is it human's documentation on aliens.
Crossover - X-Com & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 8 - Words: 8,566 - Reviews: 1 - Favs: 24 - Follows: 23 - Updated: 7/6 - Published: 2/11
The Halo Effect by Agentweapon-Proelium Tempus reviews
The discovery of a massive shield world and its contents put the UNSC into high alert. More alien artefacts are uncovered here, while vastly inferior to Forerunner, Covenant and Humanity technology, they still pose a threat since no First Contact scenario ever goes according to plan. With the help of the newly established AIS, will the UNSC be able to survive this new threat?
Crossover - Halo & Mass Effect - Rated: T - English - Humor/Adventure - Chapters: 7 - Words: 31,392 - Reviews: 96 - Favs: 221 - Follows: 334 - Updated: 7/5 - Published: 5/5 - Master Chief/John-117, OC, Shepard (F), Admiral Hackett
Robo Effect by Star Sage reviews
The Robotech wars are over. The survivors of Humanity and the Zentraedi are now alone in the universe, and so, come together, becoming something new, becoming Terrans. Now this race will find itself thrust into the galactic scene, as the Citadel Races and those beyond test these young upstarts, and in the shadows, old things begin to move.
Crossover - Robotech/Macross & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 29 - Words: 97,717 - Reviews: 286 - Favs: 333 - Follows: 378 - Updated: 7/5 - Published: 4/14
N7 SOLDIER by TheScreamingViking reviews
The Crucible dumps Shepard on Gaia. The first human Spectre becomes the first female SOLDIER as well as their first elite Sniper. Her uncanny ability to bring reason to unreasonable situations will alter the fate of the entire planet, but especially that of her three First Class friends. FF7 / ME3
Crossover - Final Fantasy VII & Mass Effect - Rated: T - English - Adventure/Friendship - Chapters: 16 - Words: 60,308 - Reviews: 137 - Favs: 148 - Follows: 178 - Updated: 7/4 - Published: 3/28
Heroes Unite! Rise of Cthulhu by TheMasterFiction-Writer reviews
The sequel to the popular multiverse crossover epic story written by So-Pro Warrior. The multiverse is under threat once again but this time the stakes are raised even higher. New discoveries that are made, new friends and foes that join in on the fight, new tests that will push the Heroes to their limits... it can all be found here so buckle up and let's ride! :)
Crossover - Doctor Who & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 3 - Words: 22,756 - Reviews: 2 - Favs: 3 - Follows: 2 - Updated: 7/4 - Published: 5/9 - 11th Doctor, Shepard (M)
War's Effects by Achaix reviews
The Solar Rails lead to new, unknown worlds, with new, unknown fates... Humanity has entered the Mass Effect universe in a completely different way.
Crossover - Mass Effect & Warframe - Rated: T - English - Sci-Fi/Adventure - Chapters: 2 - Words: 2,352 - Reviews: 7 - Favs: 11 - Follows: 23 - Updated: 7/4 - Published: 6/26
Red Cobra by Billybobjoe47s reviews
Last time the UNSC discovered a mysterious alien artifact, the Halos came within seconds of activating. Every problem the UNSC has had in the last 50 years has been because of aliens and their blasted artifacts. So when a newly-surveyed system holds a mysterious artifact, there is great cause for worry. Operation RED COBRA is intended to remedy that worry- by any means necessary.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 11 - Words: 25,002 - Reviews: 142 - Favs: 382 - Follows: 535 - Updated: 7/4 - Published: 1/6 - Master Chief/John-117, T. Hood
Mass Effect: Robots in Disguise by Kimball the Great reviews
Team Prime has saved Earth from the Decepticons, now 100 years after they must save them against the Reapers. But will the Galaxy accept their presence, due to the fact they're synthetic? Characters from other franchises such as Theta from RvB. I don't own anything here except the storyline, but even my ownership is limited, there.
Crossover - Transformers/Beast Wars & Mass Effect - Rated: T - English - Sci-Fi/Suspense - Chapters: 2 - Words: 1,746 - Reviews: 3 - Favs: 4 - Follows: 3 - Updated: 7/4 - Published: 5/9 - Optimus Prime, Predaking, Tali'Zorah, Shepard (M)
Unlikely Confrontation by Archer83 reviews
Two women, galaxies apart. Each lost in their own way, yet eerily similar. This is the story of what happens when the Psychotic Biotic and a fallen cathar Padawan meet... Spiritual sequel to Unlikely Rendezvous.
Crossover - Star Wars & Mass Effect - Rated: T - English - Drama/Hurt/Comfort - Chapters: 1 - Words: 7,211 - Reviews: 1 - Favs: 1 - Follows: 1 - Published: 7/4 - Juhani, Jack - Complete
Sudden Contact by A Very Thirsty Megalomaniac reviews
At the dawn of the Great War, first contact was made between the protoss, imperious firstborn of the xel'naga, and the turians, proud militarists. As the galaxy catches fire at this sudden conflict, unlikely alliances are formed while ancient directives are carried out by the oldest minds in the Milky Way. The Koprulu sector has opened, and the zerg are loose in Council space.
Crossover - StarCraft & Mass Effect - Rated: T - English - Sci-Fi/Humor - Chapters: 22 - Words: 106,568 - Reviews: 200 - Favs: 146 - Follows: 194 - Updated: 7/4 - Published: 2/9 - James R., Tassadar, Alexei S., Primarch Adrien Victus
Mass Effect: Guerrillas by Wanderer101 reviews
When the EDF left mars they took with them the secrets of a lost civilization. The EDF neglected to inform the Red Faction of the galaxy at large hoping the tiny planet would collapse. Unfortunately for them The Faction became stronger than anyone on Earth or the Citadel could ever imagine.
Crossover - Red Faction & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 7 - Words: 7,852 - Reviews: 49 - Favs: 127 - Follows: 178 - Updated: 7/4 - Published: 9/9/2013
Dawnstar by Crillysa reviews
A Federation warship, after a devastating encounter with the Borg, is flung into the Mass Effect universe right smack in the middle of the Reaper invasion. The ship's AI is alone, for her crew is in stasis or dead, forcing her to make decisions that will shape the galaxy for millennia to come. Will she stand by the Prime Directive, or intervene, sword raised high? ME/ST, mid-ME3
Crossover - StarTrek: Other & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 2 - Words: 3,830 - Reviews: 8 - Favs: 14 - Follows: 33 - Updated: 7/3 - Published: 7/2
The Queens of Pandora by Vergil1989 the Crossover King
Two galaxies, two people, literally worlds apart, are about to collide, and change the face of the universe through their actions. Now, hunted by Hyperion forces, the population of Pandora, and enemies from the past, they must band together if they're to reach the ultimate prize. The Vault, containing unimaginable power, is waiting for a brave soul to claim it. T for now.
Crossover - Mass Effect & Borderlands - Rated: T - English - Adventure/Humor - Chapters: 1 - Words: 2,962 - Favs: 3 - Follows: 4 - Published: 7/3 - OC, Maya, Handsome Jack
Whispers of the Fallen by ReaperScion reviews
The Capua SS-1, an Alliance vessel on a covert mission, is recalled to fight the Reapers for the final time. As they march to their deaths, an unknown factor violently forces them into a completely different situation. For the crew of the Galactica, the disappearance of Kara Thrace strikes them as a cruel joke as they try to deal with the consequences. Even dead gods can dream...
Crossover - Battlestar Galactica: 2003 & Mass Effect - Rated: T - English - Sci-Fi/Mystery - Chapters: 9 - Words: 30,632 - Reviews: 39 - Favs: 66 - Follows: 117 - Updated: 7/3 - Published: 2/27/2014
Compromise isn't an option (Redone) by blackiechan13 reviews
Well here I am again, second attempt redone, Note: I am an amateur writer with dyslexia so there will be issue mainly of the Grammatical kind however hopefully I should acquire some Beta's soon so the Quality of chapters should go up, but yeah same premise as the last attempt just redone
Crossover - Warhammer & Mass Effect - Rated: T - English - Adventure/Romance - Chapters: 10 - Words: 26,574 - Reviews: 19 - Favs: 18 - Follows: 35 - Updated: 7/3 - Published: 9/12/2014
Theater of Space by Kamzil118 reviews
Relay 314 is activated and the Turians find Earth in the middle of WW2, but the galaxy is going to find out that they are going to meet an adaptable, warlike, creative, and screwed up species that is far more destructive than the Krogans. To a point that even the Reapers fear them. Expect plenty of references to the COH2 Multiplayer and plenty of ways to die from a Human.
Crossover - Mass Effect & Company of Heroes - Rated: T - English - Humor/Adventure - Chapters: 25 - Words: 49,349 - Reviews: 224 - Favs: 189 - Follows: 230 - Updated: 7/3 - Published: 3/20 - U. Wrex, Tali'Zorah, Saren A., Mordin S.
Path of the Chimera by dmstags72 reviews
Brought to another Galaxy under the guise of a Test, Dresdin is mistaken for another person and brought on Accident. Given free reign with no interference for the sake of the test, he decides to test the limits of his freedom within the world with little care for the outcome. Original character, different ending, no-dlc added.
Crossover - Star Wars & Mass Effect - Rated: T - English - Drama/Hurt/Comfort - Chapters: 4 - Words: 5,207 - Reviews: 2 - Favs: 7 - Follows: 7 - Updated: 7/3 - Published: 5/2/2014 - Shepard (F), Ashley W., Liara T'Soni, Tali'Zorah
Of Psychics and Flying Chthulu-ships by Dr1ft3r0I reviews
The Volunteer ended the war. Now he and the best of X-Com are stuck in a world that they don't know, surrounded by aliens that may or may not want to kill them all. Oh, and there's a giant metal cuttlefish in the sky. Starts post X-COM: EU, beginning of ME1. Not CRACK!
Crossover - X-Com & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 4 - Words: 14,349 - Reviews: 30 - Favs: 69 - Follows: 134 - Updated: 7/3 - Published: 4/29 - [Shepard (F), Garrus V.]
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: 21 - Words: 113,316 - Reviews: 1148 - Favs: 1,722 - Follows: 2,025 - Updated: 7/2 - Published: 8/8/2014
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