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Alternate First Contact War
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Focus: Games Mass Effect, Since: 01-19-11
Founder: Relvain Jenafuse - Stories: 422 - Followers: 445 - Staff: 16 - 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

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: 1 - Words: 2,726 - Reviews: 8 - Favs: 37 - Follows: 58 - Published: 7/3
XCOM 2: The Second Contact! by Halofan5695 reviews
After defeating ADVENT, XCOM founded a new government called the Terran Empire, a far-right isolationist government. They even goes as far as to found colonies in the Andromeda galaxy to avoid a second contact. However that did not work, as they make contact with hostile aliens in their colony of Plymouth Rock at the Athena nebula.
Crossover - X-Com & Mass Effect - Rated: T - English - Sci-Fi/Tragedy - Chapters: 17 - Words: 114,562 - Reviews: 74 - Favs: 63 - Follows: 75 - Updated: 7/31 - Published: 4/3 - Saren A., Joker, Illusive Man, Shepard (M)
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: 28 - Favs: 108 - Follows: 160 - Updated: 6/12 - Published: 3/6
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: 46 - Favs: 138 - Follows: 222 - Updated: 5/7 - Published: 4/13/2015 - Admiral Hackett, Saren A., Zaeed M.
The Rise of Humanity by Phantomdust149 reviews
This probably wont be fun to hear, but I can't upload files to the website for some reason. I don't know if it's my internet my new laptop, or what As such this story will have to go on hiatus until I can figure it out, and fix it. It may potentially be abandoned if I can't figure out what the problem is. Sorry.
Crossover - Mass Effect & Dark Souls - Rated: T - English - Sci-Fi/Fantasy - Chapters: 3 - Words: 17,620 - Reviews: 43 - Favs: 232 - Follows: 314 - Updated: 4/4 - Published: 12/9/2015
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 zero point energy missiles over Shanxi could do. For want of a nail, civilizations will rise and fall.
Crossover - Stargate: SG-1 & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 5 - Words: 21,155 - Reviews: 175 - Favs: 530 - Follows: 872 - Updated: 8/7 - Published: 4/10
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: 4 - Words: 47,593 - Reviews: 188 - Favs: 605 - Follows: 833 - Updated: 7/5 - Published: 3/29
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: 38,300 - Reviews: 86 - Favs: 166 - Follows: 171 - Updated: 4/4 - Published: 3/11 - Complete
Rise of the Old World by Rexthedoge reviews
When a god dies to protect his people, what happens when he comes back? FO/ME/40k X-over. May contain things some consider offensive.
Crossover - Fallout & Mass Effect - Rated: T - English - Fantasy/Sci-Fi - Chapters: 5 - Words: 7,827 - Reviews: 27 - Favs: 67 - Follows: 93 - Updated: 7/1 - Published: 4/13/2015
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: 69 - Follows: 81 - Updated: 5/9 - Published: 2/12 - 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: 100 - Favs: 215 - Follows: 277 - Updated: 4/7 - Published: 1/8
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: 221 - Favs: 300 - Follows: 462 - Updated: 8/19 - Published: 10/12/2015
Xcom: Incursion by Drewman784 reviews
Every race thus far has utterly failed to stop the Reapers, always embroiled in pesky politics and wars to take any notice of the coming storm. This time though... this time is different. Can you feel the equally raging storm coming? I can. Two storms will collide, destruction will be everywhere, and I can only hope this time it will be enough.
Crossover - X-Com & Mass Effect - Rated: T - English - Suspense/Adventure - Chapters: 9 - Words: 31,678 - Reviews: 101 - Favs: 176 - Follows: 245 - Updated: 7/13 - Published: 11/28/2015
Human Magic Effect by Leona-do reviews
Humanity faced an alien coalition invade Earth led by the Ethereal. Outgunned and Outnumbered. Humanity won because of of Magic. It wasn't science or technology that saved the world. It was ultimately Magic that saved humanity from the Ethereals. Magic changed humanity, and so too it changed the galaxy when humanity entered the stars. Alternative Reality. AU Mass Effect 2
Crossover - Fate/stay night & Mass Effect - Rated: T - English - Fantasy/Sci-Fi - Chapters: 1 - Words: 6,176 - Reviews: 74 - Favs: 268 - Follows: 354 - Updated: 7/25 - Published: 11/20/2015 - Shepard (M)
Guides for the Young by NHunter reviews
Humanity makes an earlier first contact, and with a different race. Thus, the history is changed.
Mass Effect - Rated: T - English - Chapters: 5 - Words: 22,511 - Reviews: 158 - Favs: 759 - Follows: 982 - Updated: 1/28 - Published: 9/24/2015
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 Warframe/Mass Effect Crossover
Crossover - Mass Effect & Warframe - Rated: T - English - Sci-Fi/Adventure - Chapters: 5 - Words: 13,154 - Reviews: 28 - Favs: 115 - Follows: 174 - Updated: 9/25/2015 - Published: 6/26/2015
Mass Effect Turian Militia War by teamaster2 reviews
What would happen if instead of meeting the System Alliance, the First Contact War is waged between the Turians and the IMC/Militia. Rated T for violence and lanaguage
Crossover - Mass Effect & Titanfall - Rated: T - English - Sci-Fi - Chapters: 4 - Words: 3,427 - Reviews: 15 - Favs: 75 - Follows: 106 - Updated: 6/12 - Published: 11/4/2015
Tomorrow's a New Day by Delphi913 reviews
Humanity's entry into the galaxy was not a peaceful one, but they would persevere. They were a race of warriors forged in endless battle, and they would fight to the end to uphold the ideals of their heroes.
Crossover - Metal Gear & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 3 - Words: 6,377 - Reviews: 31 - Favs: 136 - Follows: 198 - Updated: 12/1/2015 - Published: 11/3/2015 - Bladewolf, OC, D. Anderson, Shepard (M)
HaloEffect: Rise of The Republic by Fernix13 reviews
When Great War ended, humanity and covenant merged. New formed Republic of Orion Arm is trying to create a war-free civilization, but what will happen when this empire will meet another galactic goverment? Rated T for blood, death etc. Multiverse crossover (Cancelled)
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 8 - Words: 18,036 - Reviews: 85 - Favs: 293 - Follows: 353 - Updated: 2/12 - Published: 8/24/2015
The Descendants by Mediam Noctem reviews
No one knows what happened. All that is known is the Consequence, the aftermath - Humanity was nearly destroyed, the Solar System corrupted. Nothing is as it seems. (AU)
Mass Effect - Rated: T - English - Mystery - Chapters: 4 - Words: 9,648 - Reviews: 67 - Favs: 249 - Follows: 319 - Updated: 6/6 - Published: 10/23/2015
Organic toasters by Brian1972 reviews
The Cylons won the war and fled the nuclear wasteland that once were the 12 colonies. Between the stars they found earth and learned that not all humans hate them. A long time after unification they made contact with the Citadel. Turians were diciplined and First Contact went well until they infromed the Asari Ambasador about their history.
Crossover - Battlestar Galactica: 2003 & Mass Effect - Rated: T - English - Sci-Fi/Drama - Chapters: 5 - Words: 18,464 - Reviews: 80 - Favs: 184 - Follows: 274 - Updated: 11/2/2015 - Published: 10/15/2015
Rise of the commonwealth re-write by necromantic 247 reviews
This is a re-write of rise of the commonwealth, for those of you who haven't read the original this is a story where humanity rises becomes a commonwealth and their interactions with the council. (I do not own cover image) Poll now closed.
Mass Effect - Rated: T - English - Sci-Fi - Chapters: 23 - Words: 47,286 - Reviews: 135 - Favs: 266 - Follows: 336 - Updated: 5/7 - Published: 6/28/2014
Gods and Titans by An Unusual Storyteller reviews
In a galactic community where everything is set and under order, they are unprepared for chaos; for rage; for hate. They will be unprepared for a war with Gods and Titans. The Turian Hierarchy discovers a new space-faring species. Humans. The consequences may be either a new, powerful alliance; or extinction. AU. Now under indefinite Hiatus.
Mass Effect - Rated: T - English - Sci-Fi/Fantasy - Chapters: 8 - Words: 10,128 - Reviews: 98 - Favs: 183 - Follows: 256 - Updated: 6/7 - Published: 9/16/2015
Space in Conflict: Human Assault by Phuripat reviews
Relay 314 is activated and the Turian find Earth in the middle of WW3, the Turian thought they can defeat Earth within a week but they soon found out that they are messing with someone they shouldn't be messing with. Co-Author with Timedraven117
Crossover - Mass Effect & World in Conflict - Rated: T - English - Parody/Humor - Chapters: 8 - Words: 36,834 - Reviews: 60 - Favs: 200 - Follows: 295 - Updated: 6/18 - Published: 6/24/2015 - U. Wrex, Tali'Zorah, Saren A., OC
For the Republic by Wanderer101 reviews
The United Republic of States after 6000 years ascends to the stars. The Council will have to contend with a nation that is better than them in every way. This is kind of a humanity F* Yeah! story. Well what did you expect from a game that lets you build a nation that makes our countries look like boy scout troops. Rated T for "Just in Case..."
Crossover - Civilization Series & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 9 - Words: 23,494 - Reviews: 139 - Favs: 525 - Follows: 791 - Updated: 6/9 - Published: 9/28/2015
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