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Alternate First Contact War
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Focus: Games Mass Effect, Since: 01-19-11
Founder: Relvain Jenafuse - Stories: 545 - Followers: 445 - Staff: 17 - id: 88942
This community is for stories with the First Contact War in it, the war can be against the System Alliance or an alternate Human Civilization. This community will accept any story and All Ratings are accepted. Even if the story has only one long chapter with the First Contact War in it then it is acceptable for this community.

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Please Note: I don't actively search through the database for any stories, so send me a link if you find any, or I will just upload the newly published

Adversor Et Admorsus by PhoinexFire reviews
An ancient battle millennium old will soon begin again, forces of a dark order shall face an Empire of Light. Nations caught in the middle must choose and the future shall be shaped in the stars. Peace shall reign in the end, whether it comes in darkness or arises in light. One way or the other the darkness shall come and face the Terran Star Imperium. Sequel to Britannia Rising.
Crossover - Code Geass & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 6 - Words: 44,062 - Reviews: 67 - Favs: 269 - Follows: 347 - Updated: 5/15 - Published: 5/13/2020 - [Lelouch L., C.C.]
Half Life: Entanglement by ThePilotArchangel reviews
Ayita Shephard, Lambda Resistance; Cato'Zorah nar Rayya, hired Quarian of the Council Funded Relay 314 Expedition. Both dissatisfied with their lot in this universe; one under the heel of a Inter-Universal Empire, and the other under the boot of an Apathetic Galactic Council. Together they will change the Galaxy. (Image not Owned, Co-Written with IantheMechanic, First Contact AU)
Crossover - Half-Life & Mass Effect - Rated: T - English - Sci-Fi/Family - Chapters: 32 - Words: 269,882 - Reviews: 25 - Favs: 63 - Follows: 96 - Updated: 5/30 - Published: 6/30/2020 - [Shepard, OC] Garrus V., Tali'Zorah
Mass Effect: Per Tenebras Lux by KumquatMan reviews
What happens if Humanity never discovered the Prothean Archives until after they had achieved FTL. What happens when a Turian Spectre Garrus Vakarian leads a search for a weapon against the Reapers. Will Humanity help the Council and save the galaxy? Or will it let the cycle continue? A/U, OP!Humanity, FemShep, Inspiration taken from several universes.
Mass Effect - Rated: T - English - Sci-Fi - Chapters: 1 - Words: 1,779 - Reviews: 11 - Favs: 111 - Follows: 171 - Published: 1/26 - [Shepard, Samantha T.] Garrus V., Miranda L.
The Solar Research Council by Minimalist.Musings reviews
Humanity was unified by the Pluto Research Council, a forward-looking nation-state dedicated to the advancement of the species via relentless pursuit of knowledge and development. With the discovery of the Charon relay, how will the Scientific Principle guide Humanity into the future? Especially one with a Galaxy full of hostile aliens.
Mass Effect - Rated: K+ - English - Sci-Fi - Chapters: 21 - Words: 37,705 - Reviews: 132 - Favs: 418 - Follows: 611 - Updated: 6/11 - Published: 1/15
Mass Effect: Skynet by Wanderer101 reviews
To combat a brutal communist regime emerging from the ashes of the Soviet Union the United States builds an AI to give them an edge. Little do they know this edge may be enough to help them defeat an ancient evil.
Crossover - Terminator & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 2 - Words: 8,978 - Reviews: 86 - Favs: 433 - Follows: 611 - Updated: 6/6/2020 - Published: 3/9/2020
A Different Galaxy A Different Humanity by yanzak reviews
A century ago, humanity peacefully made first contact with the wider galaxy. Now, as a fledgeling Alliance tries to secure its place in the wider galaxy, a long lost branch of humanity sets its sights on the chaotic sprawl of the Terminus Systems.
Crossover - Mass Effect & Stellaris - Rated: T - English - Chapters: 1 - Words: 10,709 - Reviews: 14 - Favs: 98 - Follows: 149 - Published: 11/15/2019
Incompatible System by mp3.1415player reviews
Technological incompatibility can cause serious issues even at a simple level. When it comes to interstellar travel, those issues can be quite profound...
Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 16 - Words: 127,546 - Reviews: 802 - Favs: 2,901 - Follows: 3,375 - Updated: 1/5 - Published: 8/18/2019
Future-Bound by macroVAC reviews
The story of Mass Effect, while an excellent space opera, never took full advantage of the capabilities of its setting. Let's fix that, the stars will move, and the galaxy will tremble! No force, neither stagnant, galactic ascendancies nor ageless mechanical monstrosities will stand in the way of the future's implacable march… For better or worse.
Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 3 - Words: 12,452 - Reviews: 27 - Favs: 124 - Follows: 191 - Updated: 4/7/2020 - Published: 11/24/2019
The Terran Transformation by FrogRay reviews
One change in the 21st century set Humanity on a different path. On Mars, more was discovered than just the key to the stars. Tales of extinction and an unbroken cycle told of a dark future, but the Reapers might be the ones in for a surprise. AU, not using Mass Effect: Andromeda, and the Reapers get a bit stronger.
Mass Effect - Rated: T - English - Sci-Fi - Chapters: 11 - Words: 47,147 - Reviews: 113 - Favs: 626 - Follows: 843 - Updated: 4/2/2020 - Published: 9/23/2019
Fall of the Citadel by UnicronEatsTheCitadel reviews
Humanity fell unaware of the danger they unleashed upon the galaxy. This Cycle will be different. The Reapers will fall. The Citadel will fall. I am SKYNET
Crossover - Terminator & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 10 - Words: 11,964 - Reviews: 104 - Favs: 199 - Follows: 282 - Updated: 3/9/2020 - Published: 11/7/2019
Envirosuits and Doobies by SympathyForTheQuarians reviews
After being exiled from known space following a disastrous failed colonization attempt, the Migrant Fleet makes First Contact with Earth in 1968. Chaos ensues. AU Historical First Contact, Humans/Quarians.
Mass Effect - Rated: T - English - Humor/Drama - Chapters: 17 - Words: 43,016 - Reviews: 77 - Favs: 282 - Follows: 361 - Updated: 3/7 - Published: 5/17/2019
The End of Eternity: Rise of the Terran Alliance by Icarus636 reviews
No Gods, No Kings REWRITTEN: Through intervention the dream of Rapture never became a nightmare, instead new technologies and beliefs pave the way for Humanity to unite as one and seek a new future among the stars. The Council finds itself confronting a civilization that has surpassed every technological shackle and overcame every obstacle thrown their way: The Terran Alliance.
Crossover - Mass Effect & BioShock - Rated: T - English - Sci-Fi/Mystery - Chapters: 17 - Words: 205,466 - Reviews: 262 - Favs: 984 - Follows: 1,280 - Updated: 1/15 - Published: 8/6/2019 - Tali'Zorah, Shepard, Eleanor L., Elizabeth
It Started At Shanxi by SpaceTurtleOX reviews
One hundred years after the end of the Human-Covenant War an ill-fated UNSC expedition opens Relay 314, revealing a civilization unprepared for their arrival, and relics from a terrible past.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 15 - Words: 73,507 - Reviews: 499 - Favs: 1,467 - Follows: 2,250 - Updated: 9/6/2020 - Published: 7/26/2019 - Master Chief/John-117, Cortana, Zaeed M., OC
How I Learned To Stop Worrying And Love The Hierarchy by Kachimoochi reviews
Dr. Strangelove interpretation in the Mass Effect Universe. When the First Contact War didn't end, both ends of the galaxy faced one another in eternal war. Either side possess a weapon capable of eradicating the other. All it can take for complete obliteration of them all is a single mistake from either side. But nobody's stupid enough to make one... right?
Mass Effect - Rated: T - English - Humor/Drama - Chapters: 3 - Words: 8,439 - Reviews: 3 - Favs: 13 - Follows: 15 - Updated: 7/20/2019 - Published: 7/1/2019
A unexpected foe by L3G10N reviews
The Turians expected a unprepared young species, what they didn't expect was for their foe to have friends in high places.
Crossover - Mass Effect & Thor - Rated: T - English - Drama - Chapters: 3 - Words: 7,703 - Reviews: 67 - Favs: 258 - Follows: 367 - Updated: 9/26/2020 - Published: 5/18/2019 - Thor, Loki, Hela
A House Divided Amongst Itself by ThePilotArchangel reviews
First Contact AU! The United Confederacy explores the Orion arm of the milky way galaxy, unaware of the rest of galactic civilization. When mankind meets its first aliens, how will things unfold? How will mankind react? (DISCONTINUED, Spiritual Successor Story 'Pax Britannia' Coming soon)
Mass Effect - Rated: T - English - Chapters: 33 - Words: 120,795 - Reviews: 366 - Favs: 488 - Follows: 664 - Updated: 12/20/2020 - Published: 4/17/2019 - Hannah S., Rael'Zorah, OC
A Call to Duty by Z98 reviews
Relations between the Terran Empire and the Citadel have been tense since the First Contact War, but efforts to reach amicable relations were bearing fruit. The discovery of a Prothean relic on Eden Prime offered another opportunity to improve relations, until things go badly awry. As Cadre, one of the emperor's chosen, Shepherd is charged with determining the truth, at any cost.
Mass Effect - Rated: T - English - Adventure - Chapters: 44 - Words: 349,243 - Reviews: 325 - Favs: 535 - Follows: 572 - Updated: 8/7/2019 - Published: 9/13/2017 - Complete
Contact by KE12 reviews
AU: Humanity failed to conquer FTL, having no Eezo in Sol, but they did manage to overcome many other technologies which have allowed them to become the masters of their solar system, but what happens when the Citadel Council stumble across them in the year 3517AD? The Citadel wants their technology and Humanity wants out of Sol, but can a deal be struck? Heavy! focus on FC aspects
Mass Effect - Rated: K+ - English - Sci-Fi - Chapters: 26 - Words: 137,555 - Reviews: 478 - Favs: 1,356 - Follows: 1,926 - Updated: 4/28 - Published: 4/3/2019 - Shepard, Councilor Tevos, Benezia
The bite of humanity by Bigpizza reviews
The IMC activates a Mass Relay after the refueling raid. This does not go unnoticed and the Turian Hierarchy attacks the small research station. How will a humanity which has experienced civil war for over 2 decades do against the Turian Hierarchy? Find out here [Rewrite up under the name of Bite of Humanity: Reimagined.]
Crossover - Mass Effect & Titanfall - Rated: T - English - Sci-Fi/Tragedy - Chapters: 6 - Words: 11,643 - Reviews: 26 - Favs: 119 - Follows: 180 - Updated: 5/14/2019 - Published: 12/11/2018
Mass Effect: The Civil War by ProfFartBurger reviews
A house divided cannot stand. Following an explosive first contact, and the cementation of their place as a galactic superpower, the Systems Alliance must now deal with the consequences of their choices and the aftermath of their wars. Earth is set ablaze, Sparta is torn apart, and below it all simmers an ancient, apocalyptic plot. The finale to the WarVerse Prequel Wars trilogy.
Mass Effect - Rated: T - English - Sci-Fi/Suspense - Chapters: 4 - Words: 37,986 - Reviews: 61 - Favs: 244 - Follows: 302 - Updated: 11/23/2019 - Published: 1/24/2019 - Admiral Hackett, Miranda L., Shepard, OC
Awakened Swarm by erttheking reviews
In the middle of the First Contact War, humanity is on the brink of losing a planet to alien control when something emerges from the shadows. A threat thought long vanquished. One hungry for revenge.
Mass Effect - Rated: T - English - Drama - Chapters: 1 - Words: 4,506 - Reviews: 18 - Favs: 79 - Follows: 88 - Published: 1/9/2019 - Complete
A Self-Inserts Journy through the multiverse by coolblooded reviews
Join Ryan as he builds a multivers empire that spanes many universes.
Crossover - Game X-overs & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 2 - Words: 2,624 - Reviews: 10 - Favs: 43 - Follows: 64 - Published: 8/12/2018
Gundam Spirit by emap7070 reviews
Humanity was there alongside the protheans when the reapers started their harvest. pulling a phyrric victory, yet going extinct. 50.000 years later, a little wing calls for help. a Gundam responds. the greatest discovery in years follows.
Crossover - X-overs & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 1 - Words: 550 - Reviews: 15 - Favs: 31 - Follows: 43 - Published: 8/1/2018 - Liara T'Soni, Aethyta, Benezia
Star Effect by stormwolf3710 reviews
What if something was found on the moon and a entire universe was created to hide its secrets? What if Earth used those designs to create their own navy? And what if it was the Asari who first made contact? A idea I've been sitting on for some time.
Crossover - Star Wars & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 8 - Words: 56,541 - Reviews: 180 - Favs: 949 - Follows: 1,317 - Updated: 6/28/2020 - Published: 7/22/2018
Isolation Effect: A Challenge by Nicogen reviews
"I'm surrounded by such wondrous people and sights. I'm the first Human on this beautiful station, what the other races call the 'Citadel'.But I can't help but feel alone. They all call me friend but i just can't help it. It's just not the same as talking to another human being! But it can't be helped it just can't. Sigh, date at Human calendar standard of May 16, 2016." end log.
Mass Effect - Rated: T - English - Drama/Hurt/Comfort - Chapters: 1 - Words: 242 - Reviews: 6 - Favs: 8 - Follows: 10 - Published: 5/16/2016
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