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Alternate First Contact War
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Focus: Games Mass Effect, Since: 01-19-11
Founder: Relvain Jenafuse - Stories: 451 - 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

Pathfinder by Andrithir reviews
Alone and adrift in Andromeda, the crew of the Hyperion find themselves in the war fought between a feroicious theology and the UNSC, a human faction that is different and yet unnvervingly similar to the Systems Alliance.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 1 - Words: 2,722 - Reviews: 21 - Favs: 48 - Follows: 83 - Published: 15h - Master Chief/John-117
The Reincarnation of Zero by AdmiralAtvar reviews
Lelouch was prepared for the zero requiem. But when he discovers that not only is humanity not alone in the universe, but that there is a whole galaxy where the strong oppress the weak? Prepare yourself galaxy for zero is coming and he going to change everything. 1st fan-fiction, irregular updates and lots of Lelouch kicking ass.
Crossover - Code Geass & Mass Effect - Rated: T - English - Chapters: 2 - Words: 2,948 - Reviews: 18 - Favs: 67 - Follows: 98 - Updated: 3/17 - Published: 3/10
Alternative Humanity - The Lost Sol: Redux by The Glorious Reader reviews
What would life entail with the disappearance of the sun? How would humans survive in a world without the very thing that sustains life as we know it? How would this upbringing effect the mass effect universe a whole when humans enter the galactic fold? Heavily based off of Orez Lanrete's original story, which he has allowed me to work on and continue.
Crossover - Mass Effect & Lost Planet - Rated: T - English - Sci-Fi/Fantasy - Chapters: 1 - Words: 5,077 - Reviews: 36 - Favs: 177 - Follows: 235 - Published: 3/9
First Contact War: 2021 by Kspence92 reviews
What if Humanity's First Contact War had not been fought with the Turian Hierarchy? What if we were discovered first and by a race even more bloodthirsty? In June 2021, the Batarians arrived at Earth and meet a woefully unprepared humanity...
Mass Effect - Rated: T - English - Sci-Fi - Chapters: 8 - Words: 8,600 - Reviews: 26 - Favs: 48 - Follows: 77 - Updated: 3/16 - Published: 2/27
A Million to One by Flick262 reviews
In 1890 the Martians invaded Earth, in 1940 Earth invaded Mars. Humanity has never been the same told from the views of people on the ground, this is a compiled history of Humanity from the Martian invasion and leading up to the Shepherd's Sacrifice
Mass Effect - Rated: T - English - Adventure/Parody - Chapters: 3 - Words: 8,442 - Reviews: 12 - Favs: 49 - Follows: 74 - Updated: 3/18 - Published: 3/8
Mass Effect: Escherian Era by Akallas von Aerok reviews
First Contact AU: What would you do if you find out that you were revived from death by moving your consciousness into a robotic body and then also learn that your descendants have established an interstellar empire that bows to no one? That's my situation right now. My name is David Escher Senior, and welcome to my rather turbulent second life.
Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 6 - Words: 30,195 - Reviews: 57 - Favs: 188 - Follows: 255 - Updated: 2h - Published: 2/15
Resurgent civilization by Startraveler93 reviews
What happens when a Prothean plan to steal the citadel brings it to another races home world? Will this species develop differently?
Mass Effect - Rated: K+ - English - Sci-Fi - Chapters: 8 - Words: 39,257 - Reviews: 55 - Favs: 219 - Follows: 286 - Updated: 12/18/2016 - Published: 12/22/2015
Upstarts by Covviz reviews
2257 CE. Citadel Space is going through an era of stagnation, but also one of relative peace and stability... Until a major faux pas by the Batarian Hegemony threatens to plunge it and a new galactic power into an all-out war, one which could bring an end to the peace which the Council has been trying so hard to uphold.
Mass Effect - Rated: T - English - Sci-Fi - Chapters: 3 - Words: 6,287 - Reviews: 14 - Favs: 95 - Follows: 147 - Updated: 1/29 - Published: 1/15
Time Effect by Halofan5695 reviews
Once the war with the Reapers fails in the current timeline. They travel back in time seventy thousand years before the Reapers came to harvest mankind. Leading to the events that are about to unfold.
Mass Effect - Rated: K - English - Sci-Fi - Chapters: 1 - Words: 1,359 - Reviews: 7 - Favs: 21 - Follows: 23 - Published: 1/22 - OC - Complete
Mass Effect: A Galaxy Avenged by Viscides reviews
Humanity at the 21st century existed during end of the Prothean times. Untouched by the Reapers due to being a Non FTL species, humanity watched the Reapers destroy the Protheans from deep space satellites. What will humanity do now that they found out why this happened? What will they do with their last 50,000 years? Heavy AU, FemShep/Liara Romance, Militaristic Humanity.
Mass Effect - Rated: T - English - Sci-Fi/Fantasy - Chapters: 8 - Words: 37,832 - Reviews: 56 - Favs: 248 - Follows: 340 - Updated: 2/9 - Published: 1/10 - Shepard (F), Liara T'Soni
Halo Mass Effect : Colonial War by tobiisagoodboy94 reviews
When a research ship finds a anomoly at the edge of Harvests system, a young militiaman and the whole UNSC are thrown into a galaxy much larger than they could have dreamed. Pre-war UNSC, with a mixture of Halo and Mass Effect characters and some OCs, all fighting for humanitys and maybe, if time and money is left over, the Citadels future.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 7 - Words: 38,472 - Reviews: 49 - Favs: 88 - Follows: 124 - Updated: 2/26 - Published: 1/11 - T. Lasky, OC, Garrus V., Shepard (M)
Reploid Nation by Zealswordsmen reviews
When a group of quarians reach a schorched Earth and find Dr. Light capsule, the scales of power in the galaxy are bound to change. *English is not my native language, so be prepared for a bumpy ride trought grammar. However I'm trying my best to make it a enjoyable reading for you all. Have Fun.*
Crossover - Mega Man & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 10 - Words: 55,211 - Reviews: 119 - Favs: 188 - Follows: 168 - Updated: 8/14/2015 - Published: 5/13/2015 - X, Zero, Alia, U. Wrex - Complete
The Rise of Humanity by TheExiledStoryTeller reviews
What would happen if Earth and the Human Systems Alliance was replaced with Lordran and an empire of soul consuming Undead with unnatural physical prowess, Humans, and Demons all of which can use magic which almost all of their tech utilizes? Can the other races survive the encounter? Lets find out. Rating may change to M later on.
Crossover - Mass Effect & Dark Souls - Rated: T - English - Sci-Fi/Fantasy - Chapters: 8 - Words: 35,894 - Reviews: 92 - Favs: 279 - Follows: 350 - Updated: 11/17/2016 - Published: 10/17/2016
Revenge of the Fallen by Legendary Junk Mail reviews
Fallen Humanity AU: Humanity rose to the stars, gaining power and maturity. But instead of a peaceful First Contact, they met the Prothean Empire, and after decades of War and contest, the Reapers inevitably arrived. With the Prothean Empire broken and the Systems Alliance failing, the legendary Normandy team is selected for the Fallen Program, to be The Revenge of their Cycle.
Mass Effect - Rated: T - English - Sci-Fi/Fantasy - Chapters: 7 - Words: 28,427 - Reviews: 93 - Favs: 327 - Follows: 515 - Updated: 11/28/2016 - Published: 4/10/2016 - Shepard (F), Garrus V., Liara T'Soni, Tali'Zorah
Against the Odds by Agentweapon Proelium-Tempus reviews
The Insurrection killed millions, but Humanity recovered. The Human-Flood War killed billions, but Humanity prevailed. Humanity again stands alone in the face of both persistent and threatening rivals. They are outnumbered and outgunned and are against tenacious opposition, but then again, Humanity has always had the ability for surviving the impossible. Heavy AU
Crossover - Halo & Mass Effect - Rated: T - English - Suspense/Humor - Chapters: 5 - Words: 21,745 - Reviews: 87 - Favs: 386 - Follows: 558 - Updated: 11/28/2016 - Published: 8/20/2016 - Master Chief/John-117, OC, Shepard (F), Illusive Man
Dawn of a New Age by The Best of Luck reviews
Earth has been united by a combination of the Sole Survivor, the Lone Wanderer, and the Courier. As the United Earth Government, the Dominion of New Vegas, and the Enclave of Luna expand their horizons, they come into conflict with the Citadel Alliance. Times are changing and it is the dawn of a new age for the galaxy.
Crossover - Fallout & Mass Effect - Rated: T - English - Humor/Drama - Chapters: 2 - Words: 7,329 - Reviews: 9 - Favs: 76 - Follows: 114 - Updated: 9/2/2016 - Published: 8/18/2016
Battlestar Effect by 6747 reviews
what happens when you mix a slightly in the future Earth, Cylon's and Colonail's together in the Mass effect universe.
Crossover - Battlestar Galactica: 2003 & Mass Effect - Rated: T - English - Chapters: 2 - Words: 6,329 - Reviews: 17 - Favs: 60 - Follows: 91 - Updated: 8/26/2016 - Published: 7/3/2016
Shattered Beliefs (Abandoned) by Barrybumhead reviews
"After the Great War the Unified Alliance is formed ushering a new golden age of both technology and Economy, But what happens when another first contact goes bad? How will humanity react to another possible Great War? And how will the Council react when all their Beliefs about technology are shattered?"
Crossover - Halo & Mass Effect - Rated: K+ - English - Sci-Fi/Adventure - Chapters: 4 - Words: 8,085 - Reviews: 29 - Favs: 108 - Follows: 161 - Updated: 6/12/2016 - Published: 3/6/2016
Invicta: Second Front by StarSerpent reviews
In 2525, the Covenant began its genocidal war against mankind. In 2541, 16 years after the start of the War, the Mars Archives are uncovered. The influx of new technologies, Human ingenuity and sheer ruthlessness helped turn the tide, turning a massacre into a bloody stalemate. It is now 2557, and the discovery of a Mass Relay leading to Unexplored Space will change everything. AU.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 2 - Words: 3,402 - Reviews: 48 - Favs: 150 - Follows: 239 - Updated: 5/7/2016 - Published: 4/13/2015 - Admiral Hackett, Saren A., Zaeed M.
The Terran Intervention by AmeliusTheAlteran reviews
It has been said that something as small as the flutter of a butterfly's wing can ultimately cause a typhoon halfway around the world. Now image what four massive EMPs could do in the midst of the Turian fleet about Shanxi. For want of a nail, civilizations will rise and fall. (REWRITTEN: Chapter 1-5)
Crossover - Stargate: SG-1 & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 5 - Words: 21,762 - Reviews: 195 - Favs: 664 - Follows: 1,083 - Updated: 8/7/2016 - Published: 4/10/2016
The Human War by Generatedname reviews
The Citadel Council is a peaceful conglomerate of races, blissfully unaware of the horrors that lurk beyond their space. Humanity, meanwhile, is a race that has fought against these alien horrors ever since they made contact. What will happen when the two societies meet? Will peace follow war? Or is the Citadel Council doomed to fall to humanity? Rewrite of When Civilizations Meet.
Crossover - X-Com & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 6 - Words: 67,803 - Reviews: 289 - Favs: 839 - Follows: 1,170 - Updated: 1/9 - Published: 3/29/2016
The Lion Awakens by Jaenera Targaryen reviews
Thirteen years have passed since the death of Emperor Reinhard the Invincible. Humanity has begin to rebuild, but tensions are high in the realm of the Golden Lion. But as new enemies emerge, and a bigger galaxy is discovered, it seems that the old adage may yet be true: only a common enemy can bring Humanity together.
Crossover - Legend of Galactic Heroes & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 10 - Words: 38,303 - Reviews: 97 - Favs: 202 - Follows: 187 - Updated: 4/4/2016 - Published: 3/11/2016 - Complete
Invicta: Galactic Encyclopedia, 2557 (Human) Edition by StarSerpent reviews
The Galactic Encyclopedia, 2557 (Human) Edition, covers recent Human history, developments and the driving factors within the current state of Human affairs. Connected to the Invicta Series, namely Invicta: Second Front.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 2 - Words: 13,818 - Reviews: 23 - Favs: 73 - Follows: 86 - Updated: 5/9/2016 - Published: 2/12/2016 - Admiral Hackett, Primarch Adrien Victus, Shala'Raan
The Duelist Effect by Rigged Bomb reviews
The Reapers aren't the biggest monsters on the block anymore. Not when humanity can summon creatures that are even bigger than them. *Property of Dax-RangerGuy*{On hold. Please check profile's current announcement}
Crossover - Mass Effect & Yu-Gi-Oh! 5D's - Rated: T - English - Fantasy/Sci-Fi - Chapters: 6 - Words: 23,679 - Reviews: 110 - Favs: 253 - Follows: 318 - Updated: 4/7/2016 - Published: 1/8/2016
Infinity by casquis reviews
Space is infinite, but under the right conditions even a galaxy can feel too small.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 8 - Words: 51,961 - Reviews: 236 - Favs: 340 - Follows: 499 - Updated: 8/19/2016 - Published: 10/12/2015
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