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The dawn of a new golden age by
Mercy Medical angel reviews
At the beginning of the AI revolution, a fleet of the human federation which activated a project to save and revive humanity ends up traveling to the future to the 41st millennium, they will face old and new enemies as well as see their thoughts collide with the empire that took its place
Warhammer - Rated: K - English - Sci-Fi/Adventure - Chapters: 7 - Words: 55,918 - Reviews: 42 - Favs: 130 - Follows: 168 - Updated: 11/30 - Published: 8/31/2023 - Tyranids, OC, Primarch/s
Age of Monsters - A Warhammer 40k-Godzilla crossover by
Zillafire101 reviews
In the shadows of a world ravaged by the war, the inhabitants of the Millennium of Only War, learn that there is much of Terra's ancient past best left forgotten...
Crossover - Godzilla & Warhammer - Rated: T - English - Sci-Fi/Mystery - Chapters: 9 - Words: 174,987 - Reviews: 37 - Favs: 79 - Follows: 92 - Updated: 11/17 - Published: 4/17 - King Ghidorah, Godzilla, Chaos Space Marines, Space Marines
The Inquisitor by
deathwing17 reviews
After preventing a Chaos warband from summoning a vast army onto an Imperial world, an Inquisitor in training is hurtled through the warp and finds himself in a strange new world, one in which there are people with incredible abilities. Soon he will find himself fighting a familiar enemy and in order to save mankind he will need to cast aside old prejudices. Now has a tvtropes page
Crossover - Warhammer & Young Justice - Rated: M - English - Sci-Fi/Horror - Chapters: 41 - Words: 327,991 - Reviews: 1292 - Favs: 2,097 - Follows: 2,379 - Updated: 11/4 - Published: 4/17/2014 - Inquisition, Megan M./Miss Martian, Richard G./Robin
Mythos Effect by
Omniscent1 reviews
A crossover between Mass Effect and Cthulhutech. Humanity has won the Aeon War and has since expanded and thrived. How will the galaxy fare with this new power?
Crossover - Cthulhu Mythos & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 30 - Words: 257,676 - Reviews: 2109 - Favs: 5,471 - Follows: 6,290 - Updated: 10/28 - Published: 6/5/2013 - Saren A., Shepard, OC
The Path of the Savior by
Johnnieboy11 reviews
Trapped in another variation of the Milky Way Galaxy after the Fall of Cadia caused the opening of the Cicatrix Maledictum, a minor Eldar Craftworld finds itself stuck in a war between a humanity on the brink of extinction and an alien alliance hell-bent on ending them and the Humans. Unlikely alliances form, friendships are built and the face of the Galaxy will forever be changed
Crossover - Warhammer & Halo - Rated: M - English - Sci-Fi/Adventure - Chapters: 16 - Words: 62,598 - Reviews: 231 - Favs: 775 - Follows: 1,006 - Updated: 10/27 - Published: 8/12/2019 - Eldar, Master Chief/John-117, A. J. Johnson, OC
Terran Federation: Counterstrike by
L4 of the WEST reviews
It's been 8 years since the end of the 2nd Bug war. Humanity is starting to enter its golden age in the galactic stage, with technology no one can replicate, with allies that no one has accepted, and a military capable of taking on any competitor it seems. But that will change, those who employ chains are circling like wolves, and an enemy thought dead return
Crossover - Starship Troopers & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 22 - Words: 162,764 - Reviews: 189 - Favs: 671 - Follows: 730 - Updated: 10/25 - Published: 2/16/2017
Rising from the Embers of Sera by
thehappy reviews
The people of Sera rebuild, spreading to the stars. Wars will be waged. Peace will be sought. The Coalition has risen from the ashes to take their right to exist in the galaxy. They will survive...no matter the cost.
Crossover - Gears of War & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 29 - Words: 439,462 - Reviews: 594 - Favs: 791 - Follows: 940 - Updated: 9/20 - Published: 12/28/2020 - OC, U. Wrex, Shepard, Councilor Tevos
A Universe of Change: By Candlelight-Defiance by
AlbertG reviews
Summary: The stranded Federation crews and Earth Alliance are slowly accepting each other. But a genocidal war with the Yonji Sinhindrea threatens everything. The Minbari are struggling for their very lives and old memories still linger. Vorlons and Shadows have fled. Now the younger races must come together or everything will die in fire.
Crossover - Babylon 5 & StarTrek: Other - Rated: K+ - English - Sci-Fi/Adventure - Chapters: 18 - Words: 113,587 - Reviews: 160 - Favs: 154 - Follows: 174 - Updated: 9/15 - Published: 9/12/2020
Enduring the Flames of War by
Masterdude21 reviews
A joint Asari-Turian operation salvaged a "package" from a derelict wreckage in the Terminus Systems, whereupon they release a force of war beyond their reckoning. Hoping to avoid another war, Commander Shepard recruits the "package" into her team. A simple act of kindness, unwittingly paving the way for a clash unlike the galaxy has ever seen. Fate directs the flames of war.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Horror - Chapters: 51 - Words: 766,431 - Reviews: 2638 - Favs: 4,173 - Follows: 5,005 - Updated: 8/31 - Published: 11/30/2015 - Master Chief/John-117, OC, Shepard
The Roboutian Heresy by
Zahariel reviews
Inspired by the great Dornian Heresy of Aurelius Rex, here is an alternate timeline to the Warhammer 40000 universe, where Guilliman turned traitor instead of Horus, and led half the Legions in rebellion against the Emperor. The Index Astartes are done for all Legions. Now, the Times of Ending have begun ... Also has a TV Tropes page now !
Warhammer - Rated: T - English - Adventure - Chapters: 81 - Words: 1,068,579 - Reviews: 1018 - Favs: 1,273 - Follows: 1,185 - Updated: 8/18 - Published: 7/30/2014 - Chaos Space Marines, Space Marines
Of Shepards and Imperials by
Mandrake109 reviews
One of the oldest living perpetuals along with the remains of an inquisitorial retinue are transported into an alternative past where aliens are not simply foes to slay but friends and allies to mankind. For the perpetual it's a nice change of pace for the others? Well they may learn that co-existence might not be such a bad thing after all... Rated M for obvious reasons.
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi/Fantasy - Chapters: 10 - Words: 112,899 - Reviews: 91 - Favs: 253 - Follows: 355 - Updated: 8/3 - Published: 3/7/2019 - Imperial Guard, OC, Shepard
The Reclamation by
Fade Maybe reviews
Through ONI's manipulation, the UNSC stumbles upon a Mass Relay and is dragged into a new war. They'll discover the battered races of the Citadel, the political intrigue of its factions, and a second group of humans governed by the Systems Alliance, divided by Cerberus, and lead by Commander Shepard. Yet no one can stop what is to come: the Reclamation, and the death of the galaxy.
Crossover - Halo & Mass Effect - Rated: T - English - Drama/Suspense - Chapters: 54 - Words: 407,208 - Reviews: 1704 - Favs: 1,912 - Follows: 2,352 - Updated: 7/25 - Published: 3/13/2013
Star Trek Voyager: Shattered Legions by
Imperiumpilled30k reviews
As Voyager journeys through the Delta Quadrant it is ambushed by an unknown race, while attempting to track down the aliens they encounter allies, allies who are broken, shattered, with little left to lose but their honour... (please leave reviews)
Crossover - StarTrek: Voyager & Warhammer - Rated: M - English - Sci-Fi/Fantasy - Chapters: 3 - Words: 16,494 - Reviews: 8 - Favs: 26 - Follows: 35 - Published: 7/14 - K. Janeway, Seven of Nine, Daemons, Space Marines
Semper Vigilo by
CunkToad reviews
Due to a drive core malfunction, a human vessel arrives just in time to save the Council Envoy from the yahg. What happens when humanity enters the galactic stage not as the race that got attacked by the turians for breaking a law they weren't aware of, but as the race that saved a turian platoon from certain death? M for wartime violence, pre ME1 - ME3, no OP humanity.
Mass Effect - Rated: M - English - Sci-Fi - Chapters: 133 - Words: 1,663,687 - Reviews: 1049 - Favs: 1,716 - Follows: 1,797 - Updated: 7/7 - Published: 11/27/2016
The Terran Calamity by
F35B reviews
Humanity has long since recovered from the effects of the Human-Covenant War, beginning to resettle and rebuild. However a chance encounter with an alien artifact and following contact with the Council leads humanity and the rest of the Milky Way into a twisting conspiracy forging unexpected alliances between each race. A show that the Reapers are all too happy to watch. (Heavy AU)
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 6 - Words: 45,223 - Reviews: 274 - Favs: 569 - Follows: 884 - Updated: 6/24 - Published: 7/31/2023 - Master Chief/John-117, J. Keyes, Illusive Man, Shepard
Broken Shield by
SuperIntellectualRedditor reviews
A Custodian Shield-Captain is displaced through time and space into another universe. In a new environment, forced to treat with aliens and witches; will he be able to reconcile the ideals of the new universe with the Imperial Truth? Or will he be crushed between two worlds?
Crossover - Warhammer & Justice League Unlimited - Rated: M - English - Sci-Fi/Drama - Chapters: 6 - Words: 32,056 - Reviews: 57 - Favs: 194 - Follows: 262 - Updated: 6/14 - Published: 4/22 - Batgirl/Barbara Gordon, Batman/Bruce Wayne, Supergirl/Kara Kent/Kara In-Ze, James Gordon
Exodus Into Fire by
keita52 reviews
When the Battlestar Galactica, guided by Starbuck, makes the jump towards Earth, they find a planet encircled by giant black ships and a woman calling herself Commander Shepard telling them to leave before the Reapers attack them. With Earth not the safe haven they'd hoped for, the Colonial Fleet and their Cylon allies struggle to make a place for themselves in this new universe.
Crossover - Battlestar Galactica: 2003 & Mass Effect - Rated: M - English - Sci-Fi/Drama - Chapters: 18 - Words: 72,496 - Reviews: 123 - Favs: 329 - Follows: 471 - Updated: 6/1 - Published: 11/12/2014 - K. Thrace/Starbuck, Ashley W., Shepard
Star-Bound by
The Incredible Muffin reviews
Some destinies are written out centuries, or even millennia, ahead of time. However, when destiny is derailed, new plans have to be implemented. Sometimes, that involves ripping someone away from the peaceful end they seek and thrusting them into a tide of never-ending war in order to fix what can never be repaired.
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi/Supernatural - Chapters: 40 - Words: 273,968 - Reviews: 1185 - Favs: 1,591 - Follows: 1,932 - Updated: 5/29 - Published: 5/29/2019
The Fifth-Race Reclaimers: Upheaval by
Piero217 reviews
Over the course of eight months following their triumph over the Precursor threat, the Fifth-Race Reclaimers have been working hard to learn more about each other and their respective galaxies—sometimes without the other side even knowing. But with a new threat looming on the horizon, will they be prepared to defend every living creature they have been entrusted with?
Crossover - Stargate: SG-1 & Halo - Rated: T - English - Sci-Fi/Drama - Chapters: 3 - Words: 8,405 - Reviews: 12 - Favs: 79 - Follows: 112 - Updated: 4/14 - Published: 6/8/2019 - S. Carter, D. Jackson, Teal'c, Arbiter
New Horizons by
2 good 2 kill reviews
The Master Chief has finally lost everything. Halsey, his team, and finally Cortana. Where he may have chosen death, fate has set a new task before him with a new team. They will have to face down foes of incredible might and will have to rely on one another if they ever wish to see home again.
Crossover - Marvel & Halo - Rated: T - English - Adventure/Sci-Fi - Chapters: 11 - Words: 80,533 - Reviews: 123 - Favs: 208 - Follows: 228 - Updated: 4/9 - Published: 1/3/2014 - Master Chief/John-117, Rtas 'Vadumee, S. Palmer
On the Illusion of Might by
evevee reviews
We thought ourselves powerful, able to conquer a galaxy with nothing but toys. When we overcame every challenge, breached the space between the galaxies themselves, what use were the words of a race ashamed of their own past? Yet we cannot deny that we were warned, for while a challenge to a human is laughable, a challenge to humanity is a death sentence.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 28 - Words: 308,369 - Reviews: 2261 - Favs: 4,271 - Follows: 5,317 - Updated: 2/21 - Published: 2/21/2017 - Master Chief/John-117, Cortana, Garrus V., Shepard
The Fifth-Race Reclaimers by
Piero217 reviews
The Four Great Races once watched over thousands of worlds… but only one species was destined to inherit their place. Now, as an ancestral enemy rises from the ashes and threatens all life as we know it, humans from two different universes must learn to overcome their differences and stand together to reclaim the Mantle of Responsibility. Set shortly after the events of Spartan Ops
Crossover - Halo & Stargate: Atlantis - Rated: T - English - Sci-Fi/Adventure - Chapters: 27 - Words: 167,306 - Reviews: 280 - Favs: 504 - Follows: 517 - Updated: 2/9 - Published: 6/1/2013 - Master Chief/John-117, C. Halsey, Cortana, John S. - Complete
SGU: Season 3 (Spin-off to The Fifth-Race Reclaimers) by
Piero217 reviews
After a three-year long journey through FTL, Young and Rush are awakened by Eli only to receive some very distressing news. But just when all hope seems lost, a group of newcomers comes along who claim to be allied with the SGC—and capable of restoring Destiny. Too good to be true? Only time will tell. (Written in collaboration with AdmiralWhiteFang)
Crossover - Halo & Stargate: Universe - Rated: T - English - Sci-Fi/Drama - Chapters: 4 - Words: 39,883 - Reviews: 25 - Favs: 106 - Follows: 142 - Updated: 2/9 - Published: 9/22/2019 - OC, Eli W., Dr. N. Rush, Col. E. Young
The Sword of the Geth by
Doctor poo and the TURDIS reviews
Dying on Mantle's Approach, Cortana wakes up in an unfamiliar environment. In her drive to get home, she 'employs' the assistance of the local synthetics. She never wanted to be a galactic overlord. But a UNSC AI in an environment woefully unprepared for one of her caliber makes an easy one.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Humor - Chapters: 23 - Words: 123,604 - Reviews: 619 - Favs: 1,476 - Follows: 2,059 - Updated: 2/4 - Published: 11/23/2023 - Cortana, Shepard
Asymmetry: A Tragedy in Ten Acts by
Pseudomonus reviews
Almost 200 years after the Reapers' destruction, Commander Benezia Shepard is given a top secret mission: To explore a strange new universe; to seek out new threats and new enemies; to boldly go where no Asari has gone before! And, at the height of the Dominion war, the Federation facing defeat, Captain Forest encounters an unlikely ship that may hold the key to victory. Complete.
Crossover - StarTrek: Deep Space Nine & Mass Effect - Rated: M - English - Sci-Fi/Drama - Chapters: 12 - Words: 100,118 - Reviews: 25 - Favs: 38 - Follows: 47 - Updated: 1/28 - Published: 11/7/2023 - Complete
The Justice of a Tech-Priest by
TheBadPanda reviews
In the midst of a Chaos Invasion, a Tech-Priest of Mars is flung through a Warp Gate. Rather than a gruesome end at the hands of Chaos, the Omnissiah spared the adept's life. Now the Tech-Priest finds himself in a strange world with strange people, and must use his holy knowledge to protect it.
Crossover - Warhammer & Young Justice - Rated: M - English - Sci-Fi - Chapters: 20 - Words: 117,888 - Reviews: 1228 - Favs: 2,839 - Follows: 3,282 - Updated: 1/8 - Published: 11/2/2015 - OC, Adeptus Mechanicus
Stargate A New Age by
kaln7 reviews
Shepard defeated the Collectors, but now he must face a universe different from his own, but his team won't be the only team to help him get through this uncertain future.
Crossover - Stargate: SG-1 & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 17 - Words: 151,582 - Reviews: 173 - Favs: 306 - Follows: 427 - Updated: 1/1 - Published: 4/6/2017
An ISOT in Grimdark by
mko95 reviews
In the year 2012 AD a magical accident on the Warhammer World changes the endless fighting forever. The Wasteland is ripped away through Spacetime and changes place with Earth s Germany. On both worlds, Earth and Warhammer, nothing will ever be the same.
Crossover - X-overs & Warhammer - Rated: M - English - Fantasy/Supernatural - Chapters: 300 - Words: 1,607,065 - Reviews: 1470 - Favs: 767 - Follows: 763 - Updated: 12/3/2023 - Published: 12/22/2014 - Complete
Celestial Navigators by
WrtingforFun reviews
During warp travel, a warship bearing a small section of an Astartes chapter named the Celestial Navigators have found themselves in an unknown section of space, with busted coms and disabled warp engines. The Astartes venture down to the planet below.
Crossover - Warhammer & Elder Scroll series - Rated: M - English - Sci-Fi/Fantasy - Chapters: 20 - Words: 75,479 - Reviews: 47 - Favs: 74 - Follows: 89 - Updated: 11/10/2023 - Published: 9/18/2023 - OC, Space Marines
All the Stars by
BlueWay reviews
When the Long Night of Solace is evaporated over Reach via the weaponized usage of a Slipspace Drive, it ferries with it in its swallowed sections the Covenant Empire and, more horrifyingly, the desperate measures that the UNSC used to fight them. When they are found in a universe on the precipice of their own history, the meaning of the term "Mass Effect" will change forever.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 46 - Words: 802,179 - Reviews: 1351 - Favs: 1,986 - Follows: 2,369 - Updated: 11/9/2023 - Published: 6/8/2018 - SPARTAN-B312/Noble Six, Rookie, Shepard
The Unknown Defender by
Gabenator5 reviews
A new faction stirs, its green-clad enforcers seemingly unstoppable. Rumors spread, pirate bases go dark, and both the enslaved and kidnapped are discovered free. Who are these new interlopers, and what is their goal? For good or ill, the powers that be intend to find out.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 19 - Words: 153,324 - Reviews: 1532 - Favs: 4,369 - Follows: 5,461 - Updated: 7/30/2023 - Published: 9/27/2016 - Master Chief/John-117, Cortana, Tali'Zorah, Leviathan
Dawn of Titans by
F13D reviews
There is nothing fair, just, or honorable about war. There is only winning and losing, the living and the dead. Humanity has learned this truth and has ascended to the stars. What effect will this have on the rest of the galaxy, one that has experienced millennia of peace? Will it be able to maintain the peace or will it be ushered into a new age of war? Let the end begin. A/U
Crossover - Mass Effect & EndWar - Rated: M - English - Sci-Fi/Adventure - Chapters: 37 - Words: 391,432 - Reviews: 759 - Favs: 1,159 - Follows: 1,392 - Updated: 7/17/2023 - Published: 7/15/2015 - D. Anderson, Admiral Hackett, OC
Mass Effect: The Great War by
Mister Smallville reviews
The Citadel Council and the Turian Hierarchy has been at war for a good half of a century. Eager to break the stalemate, The Hierarchy seeks out a new ally in a rising Systems Alliance, bringing the war back to full speed. The Alliance now goes through it's trial by fire, as it emerges from obscurity into the galactic stage. (AU no Krogan Rebellions/First Contact Wars)
Mass Effect - Rated: M - English - Sci-Fi - Chapters: 54 - Words: 171,679 - Reviews: 434 - Favs: 769 - Follows: 1,016 - Updated: 6/22/2023 - Published: 1/25/2017
Justice: An Arbitrator's Journal by
Deadi1025 reviews
A massive Warp Portal appears above Earth and with it an Arbitrator who enters a Universe of Gods, Heroes, and Villains. The Imperium may have not existed yet in this time, but through him Its laws will be obeyed. Through Blood and Iron, he shall enact the Emperor's Justice whether the League or anyone else allows him or not. Judgement has come to those who come to harm Earth.
Crossover - Warhammer & Young Justice - Rated: T - English - Sci-Fi/Drama - Chapters: 13 - Words: 156,114 - Reviews: 289 - Favs: 685 - Follows: 832 - Updated: 4/4/2023 - Published: 10/31/2017 - A. Arbites
Accounts of the Flood conflicts by
hunter 139 reviews
A multicrossover series of one-shots depicting several franchises and their encounters with the Flood. I do not own Halo or any other franchises depicted in these stories.
Crossover - Halo & Mass Effect - Rated: T - English - Horror/Sci-Fi - Chapters: 41 - Words: 103,318 - Reviews: 217 - Favs: 198 - Follows: 214 - Updated: 3/17/2023 - Published: 1/15/2015 - Gravemind - Complete
Death Korps of Justice by
Lord-of-Change reviews
A young Death Korp soldier, in a battle with a follower of Chaos, ends up swallowed by the Warp. By a stroke of luck, he's sent to Earth, to a world without an Emperor, to a world where villains and heroes battle it out across the globe. With no Emperor to serve and no war to fight, this young soldier must struggle to find his own path in a world that challenges all his beliefs.
Crossover - Warhammer & Young Justice - Rated: M - English - Sci-Fi/Adventure - Chapters: 47 - Words: 444,411 - Reviews: 3013 - Favs: 3,820 - Follows: 4,104 - Updated: 3/13/2023 - Published: 7/21/2013 - Imperial Guard, Deathstroke
The Galaxy under an Iron Heel by
KanisRussell reviews
After conquering the Earth and placing it beneath the heavy weight of a jackboot, the Third Reich sets it's hungry eyes on a new target. The Final frontier. They discover things they never thought possible, and quickly finds that they might not be the only masterrace in existence. "Life does not forgive weakness"
Crossover - Mass Effect & Wolfenstein series - Rated: M - English - Adventure/Sci-Fi - Chapters: 22 - Words: 100,306 - Reviews: 216 - Favs: 391 - Follows: 477 - Updated: 1/22/2023 - Published: 8/17/2017 - Garrus V., Liara T'Soni, Shepard, OC
The Corpseman by
Hydriatus reviews
He didn't know where he was. But he had faith that He had sent him there for a reason.
Crossover - Marvel & Warhammer - Rated: T - English - Sci-Fi - Chapters: 15 - Words: 68,678 - Reviews: 299 - Favs: 629 - Follows: 788 - Updated: 7/27/2022 - Published: 4/7/2014
Weather the Storm by
Pappenheimer reviews
When three Imperials are thrown through the Warp and wake up in 2015 Queens, they must adapt and overcome the obstacles thrown their way as they seek to find a way home. Or, when Peter Parker find three bodies in an alley that aren't attending some weird convention, he must help them adapt to life in New York. [[Warhammer and Marvel AUs/fusion fic? Is that the term?]]
Crossover - Warhammer & Avengers - Rated: T - English - Adventure - Chapters: 11 - Words: 60,960 - Reviews: 70 - Favs: 257 - Follows: 344 - Updated: 7/3/2022 - Published: 11/4/2018 - Imperial Guard, Adeptus Mechanicus, Iron Man/Tony S., Spider-Man/Peter Parker
Starwatch by
CruxMDQ reviews
A youthful lieutenant Shepard unknowingly facilitates the release of an ancient evil and sets in motion a chain of events that will greatly influence the outcome of the first contact with Citadel species - and potentially threaten the standing of humanity among them. (Contributions: BrokenLifeCycle, kishinokurobi, kyro2009)
Crossover - Mass Effect & Overwatch - Rated: T - English - Adventure/Sci-Fi - Chapters: 65 - Words: 360,142 - Reviews: 172 - Favs: 325 - Follows: 382 - Updated: 6/28/2022 - Published: 6/29/2016 - Shepard, Amélie L./Widowmaker, Lena O./Tracer, G. Reyes/Reaper
Sudden Terminus by
A Very Thirsty Megalomaniac reviews
The end is nigh. Sequel to Sudden Contact and Sudden Supremacy. Finale of the Sudden Series. The outcome is uncertain.
Crossover - StarCraft & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 22 - Words: 122,131 - Reviews: 135 - Favs: 289 - Follows: 309 - Updated: 6/10/2022 - Published: 10/22/2017 - Zeratul, Saren A., Javik, Tarquin Victus
Mass Effect: The Iron Heart of Man by
Apollonir reviews
[AU] The Illusive Man said that salvation comes with a cost. When corruption seeps into the galaxy, when centuries of status quo suddenly breaks in a mere decade, when blood's spilled among the stars like never before, when extinction looms over civilization, when morality is merely a shade... salvation can only come with sacrifice. [AU First Contact War & Reaper War; GRAPHIC]
Mass Effect - Rated: M - English - Sci-Fi/Suspense - Chapters: 37 - Words: 389,709 - Reviews: 953 - Favs: 2,160 - Follows: 2,516 - Updated: 5/28/2022 - Published: 8/23/2016 - Admiral Hackett, Illusive Man, Shepard, OC
Divided Humanity by
CronaAlbarn48 reviews
The cold war never ended it simply spread to the stars. Humans have never been more united but the division is still there. In the face of Galatic politics how will humanity fair? MAD still exists and now the Citadel must deal with a race that preaches it. The powder keg that is humanity is waiting for the spark of war. Who will ignite it? Beta needed
Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 5 - Words: 26,404 - Reviews: 54 - Favs: 173 - Follows: 287 - Updated: 5/23/2022 - Published: 12/27/2017
Without War to Guide Me by
Todeswind reviews
In the grim darkness of the future there is only war. But what happpens to a Space Marine when he is stranded in a place where his unique set of talents are neither needed, desired, or valued by humanity? What is a weapon's purpose without a war to fight in?
Crossover - StarTrek: The Next Generation & Warhammer - Rated: M - English - Sci-Fi - Chapters: 11 - Words: 28,642 - Reviews: 355 - Favs: 860 - Follows: 1,175 - Updated: 3/7/2022 - Published: 1/29/2013
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: 20 - Words: 233,230 - Reviews: 333 - Favs: 1,391 - Follows: 1,723 - Updated: 2/28/2022 - Published: 8/6/2019 - Tali'Zorah, Shepard, Eleanor L., Elizabeth
Timeless Guardian by
Dome of Bones reviews
Cast out into the miasma of the Immaterium, a lone member of the Ten Thousand, crazed by tortures of the wretched beings within, never imagined he would evermore play a role in the protection of the very Imperium he had sacrificed himself to save.
Warhammer - Rated: M - English - Sci-Fi/Fantasy - Chapters: 29 - Words: 141,338 - Reviews: 143 - Favs: 349 - Follows: 403 - Updated: 2/23/2022 - Published: 4/4/2019 - Chaos Space Marines, Space Marines, OC
Frontier Broken by
USANAguy reviews
Set during the Yuuzhan Vong War in the Star Wars universe a Federation Starship is about to collide with the new Republic while accidentally bringing an old enemy with them.
Crossover - Star Wars & StarTrek: The Next Generation - Rated: T - English - Sci-Fi/Fantasy - Chapters: 13 - Words: 51,542 - Reviews: 22 - Favs: 30 - Follows: 42 - Updated: 2/10/2022 - Published: 11/23/2020 - Admiral Ackbar
BioTitans by
LuisJM reviews
After surviving a freak thunder storm, the Titans detected a distress signal at the bottom of the Atlantic Ocean. When they got down there, they weren't expecting an underwater utopia filled with insane citizens, big metal monsters, and a ruling dictator. Will they be able to find a way out of this nightmare with the help of some unlikely alliances? (TT/Bioshock X-Over)
Crossover - Teen Titans & BioShock - Rated: M - English - Adventure/Horror - Chapters: 26 - Words: 463,149 - Reviews: 32 - Favs: 88 - Follows: 83 - Updated: 1/25/2022 - Published: 9/14/2015
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: M - English - Sci-Fi - Chapters: 64 - Words: 345,885 - Reviews: 2979 - Favs: 4,747 - Follows: 5,195 - Updated: 1/1/2022 - Published: 8/8/2014
Defiance by
locolycan777 reviews
Over a hundred years before the cylon war a secret group of free thinkers colonize another system. Over time more races with nothing to lose join them and form a mighty Alliance to protect there home. When the very colonies they fled and a citadel council learn of them they will have to fight to protect their utopia. Elements from Defiance and other sci-fi used.
Crossover - Battlestar Galactica: 2003 & Mass Effect - Rated: T - English - Sci-Fi/Drama - Chapters: 5 - Words: 17,346 - Reviews: 32 - Favs: 112 - Follows: 148 - Updated: 11/12/2021 - Published: 4/12/2020
For Earth and All Her Colonies by
GADPELLAEON reviews
Post Human-Covenant War AU. After the Great War, all the UNSC wants to do is rebuild and live in the peace. A peace that so many died for. What happens when they learn that no matter what, war will always find them. Chapters Updated - Chapter 11 uploaded (07/08/2019) Any criticism and/or tips welcome.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 13 - Words: 80,854 - Reviews: 525 - Favs: 1,736 - Follows: 2,373 - Updated: 10/14/2021 - Published: 12/27/2018 - Master Chief/John-117, Arbiter, J. Garson, Councilor Tevos
Effect of Nations by
Martian Author reviews
In 2148, a small team of American scientists and explorers found the greatest discovery in Human history; alien ruins on Mars. For the next two and a half centuries Human governments and corporations flew out from Earth, carving great empires and propelling Humanity into a new golden age of peace and prosperity. And in 2397, a Japanese explorer answered Humanity's oldest question.
Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 12 - Words: 54,908 - Reviews: 134 - Favs: 570 - Follows: 772 - Updated: 10/12/2021 - Published: 8/24/2017 - Tali'Zorah, Shepard, Han'Gerrel, Councilor Tevos
Soon, everyone will hear the screams by
magkiln reviews
The Citadel Council doesn't want another conflict. Their reputation rests on their ability to maintain the peace. The Alliance of United Systems doesn't want another conflict. They won the last one, no need to risk spoiling their record. Shepard doesn't want another conflict. The last one was ugly enough. Unfortunately, it seems that some people didn't get the memo.
Crossover - Aliens/Predator & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 37 - Words: 164,619 - Reviews: 538 - Favs: 718 - Follows: 846 - Updated: 8/14/2021 - Published: 1/31/2018 - Predator/Yautja, Alien/Xenomorph, Saren A., Shepard
Mass Effect: End of Days by
Postmeat reviews
An ancient danger threatens the galaxy, unknown to all. A humanity which never discovered Prothean ruins, expanding through space on their own, emerges. Joined with the machines they created, hardened by war with a terrifying enemy, they read the writing on the wall. But will the galactic community already there listen to these newcomers, stirring up trouble everywhere they go?
Mass Effect - Rated: T - English - Sci-Fi/Suspense - Chapters: 20 - Words: 234,080 - Reviews: 754 - Favs: 3,071 - Follows: 3,673 - Updated: 8/1/2021 - Published: 3/8/2015 - Admiral Hackett, Shadow Broker, Shepard, Rachni Queen
The Lost Civilization by
Apollonir reviews
After the Battle of the Ark, a UNSC Pelican dropship crash lands on Thessia. Two ODSTs survive the crash and make contact with primitive Asari. Ninety thousand years later, Liara T'Soni discovers a strange looking aircraft and Human remains in an ancient cave burial chamber. The discovery she makes will take the Asari on a journey to discover their true lineage.
Crossover - Halo & Mass Effect - Rated: T - English - Mystery/Suspense - Chapters: 16 - Words: 33,722 - Reviews: 676 - Favs: 2,059 - Follows: 2,858 - Updated: 7/26/2021 - Published: 7/2/2017 - Ashley W., Liara T'Soni, Mordin S., Shepard
Mass Effect: Human Revolution by
IgnusDei reviews
Adam Jensen finds himself in a time only dreamed of in vids, humanity is now part of a great galactic community that fears synthetics, and he struggles to find his place within it. Note: Primarily a DX/ME crossover, with elements borrowed and integrated from other Square Enix franchises.
Crossover - Deus Ex & Mass Effect - Rated: M - English - Sci-Fi/Supernatural - Chapters: 91 - Words: 876,978 - Reviews: 2716 - Favs: 3,106 - Follows: 3,136 - Updated: 6/14/2021 - Published: 3/12/2012
Drottningville by
Marjorie Nescio reviews
Four years into the zombie apocalypse Penny and her friends are part of a community at her father's farm. (The focus of this story is on the TBBT characters.)
Crossover - Big Bang Theory & Walking Dead - Rated: T - English - Chapters: 20 - Words: 57,313 - Reviews: 18 - Favs: 34 - Follows: 27 - Updated: 6/11/2021 - Published: 10/2/2019 - Sheldon C., Howard W., Penny, Dale - Complete
United we Stand by
Mayto reviews
At the height of the Human Covenant war, another galactic power intervenes to aid the embattled humans. Standing side by side with the Turians, the UNSC prepares for a new phase of the Human Covenant war.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 86 - Words: 308,563 - Reviews: 1485 - Favs: 1,488 - Follows: 1,753 - Updated: 6/6/2021 - Published: 3/26/2019
Only the Faithful by
Tilthanial reviews
They held the line when the hordes came. They held the line when the gods came. They held the line when the Worldbreaker came. Now they hold the line against a threat they have never imagined. And they will hold the line. For they are Cadians, and they are faithful.
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 10 - Words: 170,327 - Reviews: 397 - Favs: 997 - Follows: 1,349 - Updated: 5/18/2021 - Published: 4/15/2017
The Horizons Beyond by
JJ2161 reviews
When two worlds with predefined mindsets, knowledge, and ideals have to throw all of that out the window after contacting a new player. Humanity. (Babylon 5/Mass Effect AU crossover with a Star Trek-based Humanity and Stargate-based Precursors)
Crossover - Babylon 5 & Mass Effect - Rated: T - English - Chapters: 19 - Words: 163,996 - Reviews: 354 - Favs: 650 - Follows: 771 - Updated: 5/10/2021 - Published: 9/29/2017
The Age of the New Frontier by
Lord Maximus reviews
The walls between two universes, different but similar in many ways, begin to break down and leading to outcomes no one could have predicted. A new age is about to begin but will it be one of peace or one of never ending chaos and death?
Crossover - Star Wars & Star Trek Online - Rated: T - English - Chapters: 72 - Words: 481,118 - Reviews: 431 - Favs: 230 - Follows: 199 - Updated: 5/3/2021 - Published: 9/29/2015 - Complete
Effects of a Titan by
greeneman42 reviews
A small salvage ship comes across an interesting find while searching. Set before Halo 4 and before ME 2
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 31 - Words: 226,020 - Reviews: 1085 - Favs: 2,050 - Follows: 2,677 - Updated: 4/24/2021 - Published: 11/26/2013 - Master Chief/John-117, Cortana, J. Garson
Element Halo by
Iron Warriors reviews
When we started to expand past the Orin Arm of the Milkyway, we didn't know what to expect. Once we were out there though, things changed big time. For those brief 30 years we were the top dogs of the galaxy in all powers but like always when humanity reaches a higher seat of power, something always comes to make us fall... This time however the fall will cost our entire race.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 24 - Words: 89,050 - Reviews: 275 - Favs: 633 - Follows: 885 - Updated: 4/15/2021 - Published: 12/11/2017 - OC
From the Ashes by
erttheking reviews
Even after seeing their world burned, Humanity was able to stand up again, and push beyond their pre-war status and reach the heavens. But how will a hardened Humanity handle life among the stars? And how will others react to this aggressive newcomer?
Crossover - Fallout & Mass Effect - Rated: T - English - Sci-Fi/Romance - Chapters: 119 - Words: 922,627 - Reviews: 3627 - Favs: 3,548 - Follows: 3,350 - Updated: 4/13/2021 - Published: 5/17/2012
Desperate Times Call For Desperate Measures by
ARCCaptainFordo reviews
To defeat Horus and his fellow traitors wouldn't be easy. While the Emperor answered Horus' open challenge at Istvaan III by dispatching seven of his sons to deal with their errant brothers, the Imperium dispatched a battle group of the best forces on hand at the time to deal a blow to the traitors by attacking a Dark Mechanicus Forge World. The Dark Gods have other plans.
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi/Fantasy - Chapters: 1 - Words: 249 - Reviews: 92 - Favs: 188 - Follows: 258 - Updated: 4/12/2021 - Published: 7/16/2016
To Infinity by
creamofwheat2311 reviews
After discovering an ancient artifact, the UNSC's most advanced warship and a Sangheili Assault Carrier are transported to a universe unlike anything they have ever seen, and forced into a war against a foe they never could have imagined.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 53 - Words: 473,247 - Reviews: 4121 - Favs: 5,855 - Follows: 6,802 - Updated: 3/30/2021 - Published: 10/9/2013 - Master Chief/John-117, Arbiter, T. Lasky, Shepard
War, Peace, and other Galactic Customs by
The Almighty Afroduck reviews
After a long, terrible war, the Federation of Sovereign Empires forms as the product of the alliance created early in the Great War between the Covenant Separatists and the UNSC. Time passes as they progress greatly, eventually discovering the existence of other galactic governments. The events that will follow will change the course of the galaxy in more ways than one. PART- 3
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 36 - Words: 402,465 - Reviews: 768 - Favs: 1,443 - Follows: 1,705 - Updated: 3/7/2021 - Published: 3/1/2014
Transcendent Humanity by
Solaris242 reviews
Humanity never developed FTL. The Prothean archives contained no technology, no Element Zero, just a warning. Isolated from the rest of the galaxy for two thousand years, restricted to their only system, how will humanity have changed when they first meet the Turians? AU, alternate history of humanity and First Contact.
Mass Effect - Rated: T - English - Sci-Fi - Chapters: 27 - Words: 79,685 - Reviews: 3009 - Favs: 8,852 - Follows: 8,975 - Updated: 2/16/2021 - Published: 5/7/2013 - Complete
Judgement by Steel by
LiquiDSoL reviews
A Chapter of the Ultima Founding finds itself in eerily familiar stars. Fate is reshaped by hands unknowing and unwitting. An ancient evil rises to reclaim its nefarious purpose. An unknown faith is reborn anew to bring hope that need it the most. Rated M for gore, language, and other future content.
Crossover - Warhammer & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 2 - Words: 7,928 - Reviews: 20 - Favs: 64 - Follows: 110 - Updated: 2/15/2021 - Published: 6/11/2020
Cold Machines by
BattleUnit3 reviews
They studied Organics. All they ever saw was fear from Sentient Synthetics. Geth had no place in their world. But by chance they discovered a species on the brink of extinction. They worked along side their creations as equals. They didn't care who or what you are. They only cared about their City.
Crossover - Mass Effect & Frostpunk - Rated: T - English - Adventure - Chapters: 15 - Words: 33,405 - Reviews: 478 - Favs: 1,243 - Follows: 1,636 - Updated: 2/5/2021 - Published: 5/17/2018
The Fall of a Legion (Renegades Saga, Book 11) by
Renegades Inc reviews
The Emperor's Children, loyal to the Chaos Imperium, push deeper into the rebellious realm of Ultramar despite internal struggles between the contrasting gods of Slaanesh and the Emperor. The Ultramarines and their allies resist, and the hateful Night Lords set their own vendettas in motion. Written by gothik, 2014. Takes place early 004.M31.
Warhammer - Rated: M - English - Sci-Fi/Fantasy - Chapters: 17 - Words: 64,944 - Reviews: 16 - Favs: 27 - Follows: 26 - Updated: 1/23/2021 - Published: 7/6/2018 - Chaos Space Marines, Space Marines
Shattered Fate by
Illuviar reviews
The year is 2175 and the galaxy is at peace. In the Terminus Systems, Battarian sponsored pirates gather, willing to test the resolve and capabilities of the System Alliance. At a X-COM facility, the last surviving soldier from the last war has been released from stasis, ready to be healed. Meanwhile the Ethereals plot in the shadows beyond the Relay Network and Nazara awakens...
Crossover - X-Com & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 30 - Words: 91,817 - Reviews: 99 - Favs: 405 - Follows: 524 - Updated: 12/30/2020 - Published: 2/3/2016
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: M - English - Sci-Fi/Adventure - Chapters: 12 - Words: 65,351 - Reviews: 112 - Favs: 213 - Follows: 306 - Updated: 12/8/2020 - Published: 1/11/2017 - T. Lasky, OC, Garrus V., Shepard
Hammer Effect by
wyval reviews
Humanity successfully reached for the stars, confident in their ability to conquer all who stand against them. Yet in the darkness of space, an ancient menace stirs, that could possibly eclipse all past enemies Humanity faced - including those from the depths of time they faced in the wars for Terra itself...
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi/Supernatural - Chapters: 36 - Words: 202,678 - Reviews: 129 - Favs: 244 - Follows: 281 - Updated: 12/3/2020 - Published: 7/7/2016 - Liara T'Soni, Shepard, Kai Leng
The Next Great Journey: Awakening by
alanvaladez reviews
The Reaper's return was delayed; colonists are disappearing, and mysterious incidents are happening at random colonies all over the Galaxy. Are the two surviving Reapers of the battle of the Citadel behind this events? Or is it someone else? The SPECTRES, CERBERUS and the Alliance will have to find out and put an end to this. The sequel to The Next Great Journey. Discontinued.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Drama - Chapters: 9 - Words: 85,340 - Reviews: 21 - Favs: 151 - Follows: 187 - Updated: 10/28/2020 - Published: 10/30/2016 - Master Chief/John-117, OC, Saren A., OC
Mass Trek by
OrionArion reviews
A TNG era crossover between Star Trek and Mass Effect. Commander Shepard of the Federation starship Normandy has discovered that Saren is attempting to do what Starfleet has feared ever since the discovery of the Prothean Archives on Mars: facilitate the return of the Reapers. Now she has to gather her team to stop him and Sovereign, the vangaurd of our destruction.
Crossover - StarTrek: Other & Mass Effect - Rated: T - English - Chapters: 30 - Words: 77,594 - Reviews: 127 - Favs: 255 - Follows: 316 - Updated: 10/12/2020 - Published: 1/6/2013 - J. Garson, Garrus V.
A Thin Veneer by
AlbertG reviews
Captain James T. Kirk Chancellor Gorkon rescues a group of Human refugees from the far side of the galaxy. That simple act of kindness will be the spark a war that ranges across the galaxy and reveal the thinness of the veil that separates civilization fr
Crossover - StarTrek: Other & Babylon 5 - Rated: T - English - Sci-Fi/Adventure - Chapters: 84 - Words: 449,627 - Reviews: 1830 - Favs: 1,262 - Follows: 1,055 - Updated: 9/8/2020 - Published: 7/3/2004 - Complete
Mass Effect: The Terran Gambit by
informedterran reviews
AU: A quickly advancing Humanity discovers early on the fate of the ancient Protheans and the threat of the Reapers. Instead of exploring the galaxy with wonder and optimism, the leaders of the Terran Nation prepare their young race to save themselves. When they finally make First Contact, they begin their ultimate gambit; To ready all the galaxy to fight the Reapers!
Mass Effect - Rated: M - English - Sci-Fi - Chapters: 40 - Words: 511,902 - Reviews: 375 - Favs: 1,313 - Follows: 1,489 - Updated: 9/6/2020 - Published: 4/16/2016 - OC
The Catalyst For Revenge: Andromeda by
Jade Tatsu reviews
Andromeda has so many possibilities, good and bad. The Ascended go to Andromeda but no one knows what to expect? Emptiness? Empires? Enemies? Still, when the Ascended decide that a galaxy is theirs, you can rest assured, it is theirs. And no one stands in their way. Here are some possibilities for what might happen in Andromeda. AU
Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 7 - Words: 10,261 - Reviews: 76 - Favs: 236 - Follows: 258 - Updated: 8/27/2020 - Published: 10/10/2019 - Illusive Man, Harbinger, Shepard - Complete
Mass Effect: Children of the Moons by
OmegaEntertainment reviews
"Humanity always knew, when we looked to the stars, that there could be an apex predator out there. However, while we knew that those predators could find us at the heart of our civilization, we could have never predicted that they would offer us Preservation." Rated M for Necromorphs and Brethren Moons, no other reason is needed for the rating.
Crossover - Mass Effect & Dead Space - Rated: M - English - Sci-Fi/Horror - Chapters: 13 - Words: 49,281 - Reviews: 119 - Favs: 519 - Follows: 618 - Updated: 8/7/2020 - Published: 12/11/2017 - Harbinger, Shepard, Isaac C., OC
The False War by
DerelictTyrant reviews
Hundreds of years can make a difference on the galactic scene; a violation of Council Law too. Ideals and agendas clash, as a different mankind and the galaxy meet each other. Old alliances are put to test and new pacts are forged, while the definitions of friend and foe become blurred. Alternate Universe.
Mass Effect - Rated: M - English - Sci-Fi/Suspense - Chapters: 27 - Words: 195,884 - Reviews: 123 - Favs: 293 - Follows: 334 - Updated: 6/5/2020 - Published: 1/28/2017 - Admiral Hackett, Illusive Man, Councilor Irissa, OC
Past's Relic, Future's Savior by
Abramus5250 reviews
In the grim darkness of the future, a surprising find in an empty region of space will unearth an artifact older than the Imperium of Man itself, a discovery that will have far reaching consequences for the entire galaxy torn apart by war and madness. Who is Solomon? What is his purpose? Sorta occurs in the "If the Emperor had a Text to Speech Device" series.
Warhammer - Rated: M - English - Adventure/Sci-Fi - Chapters: 44 - Words: 304,446 - Reviews: 727 - Favs: 1,341 - Follows: 1,519 - Updated: 5/24/2020 - Published: 11/30/2015 - OC
Unknown Contact by
ecarden reviews
The obligatory Mass Effect-XCOM crossover, just set a little earlier than most. The Migrant Fleet is looking for new worlds, new tech, new allies. Humanity would very much like to not be exterminated by aliens from beyond the stars. SYNERGY!
Crossover - X-Com & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 18 - Words: 126,651 - Reviews: 146 - Favs: 472 - Follows: 629 - Updated: 4/23/2020 - Published: 6/15/2017 - U. Wrex, Tali'Zorah, Joker, Shepard
Noble Justice by
free man writer reviews
His mission on Reach is over. Now, Noble Six must adjust to a new world filled with heroes and villains where he will walk the grey line between showing mercy, and taking a life. here he will clash with the good and the bad. Beware the Reaper for he is my shadow.
Crossover - Halo & Young Justice - Rated: M - English - Adventure - Chapters: 41 - Words: 389,468 - Reviews: 1733 - Favs: 2,673 - Follows: 2,760 - Updated: 4/11/2020 - Published: 6/25/2014 - [SPARTAN-B312/Noble Six, Donna Troy/Troia] Master Chief/John-117, Jorge-052/Noble Five
The Dominion rises by
tombstone199998 reviews
The dominion has stood strong for centuries since the Ethereal war, under the guidance of the Emperor the Terrans have risen beyond the wildest of dreams, what happens when they encounter the a race of council exiles in desperate need.
Crossover - X-Com & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 5 - Words: 25,421 - Reviews: 79 - Favs: 468 - Follows: 685 - Updated: 3/11/2020 - Published: 6/18/2017
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: 18 - Words: 56,481 - Reviews: 373 - Favs: 1,415 - Follows: 1,870 - Updated: 3/9/2020 - Published: 9/28/2015
Humanity's Rebirth by
TallYapflip reviews
The First Contact War brought untold destruction to Earth, reducing Humanity to a shell of its former self. For 900 years, Humanity has been working tirelessly to lay claim to its own slice of the Milky Way Galaxy, and they are prepared to bring the Council to its knees to accomplish their goals. (Massive AU, New Technologies, and a far different humanity.)
Mass Effect - Rated: M - English - Sci-Fi - Chapters: 22 - Words: 109,371 - Reviews: 594 - Favs: 2,442 - Follows: 2,891 - Updated: 1/28/2020 - Published: 3/4/2016 - [Samantha T., Shepard] Admiral Hackett, OC
And the Meek Shall Inherit by
ArcturusWolf reviews
Humanity reached for the stars earlier than expected, their colonies reaching out far and wide before the turn of the 22nd century. Yet they had not encountered another alien species; that is, until an exploration ship enters a miscalibrated mass relay and crash-lands in the homeworld of an alien species. How would humanity evolve when welcomed with kindness instead of violence?
Crossover - Mass Effect & Stellaris - Rated: M - English - Sci-Fi/Fantasy - Chapters: 6 - Words: 27,466 - Reviews: 101 - Favs: 335 - Follows: 435 - Updated: 1/4/2020 - Published: 8/24/2019
Book One: Dawn of a New Age by
DragonheartODST reviews
Humanity had been expanding across the stars for over 5 centuries in relative peace. But an alien alliance known as the Covenant wishes to destroy humanity entirely. Now threatened with extinction, can the fate of just one battle-scared survivor change the events of the war and those participating in it? Multi-crossover with Halo, Mass Effect, and a little bit of StarCraft. Hiatus
Crossover - Halo & Mass Effect - Rated: T - English - Adventure - Chapters: 14 - Words: 131,491 - Reviews: 298 - Favs: 370 - Follows: 433 - Updated: 1/3/2020 - Published: 5/19/2016
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: 65 - Favs: 294 - Follows: 335 - Updated: 11/23/2019 - Published: 1/24/2019 - Admiral Hackett, Miranda L., Shepard, OC
Contact at the Citadel by
wilkins75 reviews
Sequel to Contact of Kobol and Contact of Races. Earth and other worlds are united in the Tau'ri Alliance, with the advance technology from the Ancients and the Asgard they are the most advanced culture in the Galaxy. Now they must travel to a distant galaxy to finish the mission of the Destiny only to contact the Citadel Council and the Reapers. (Stargate Sg1/Mass Effect)
Crossover - Stargate: SG-1 & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 21 - Words: 177,578 - Reviews: 1236 - Favs: 1,527 - Follows: 1,815 - Updated: 11/18/2019 - Published: 4/23/2018
C-24: The Truth about Mars by
TreeOfLife1997 reviews
Leonard 'Bones' McCoy liked to think John 'Reaper' Grimm had died a long time ago. A name hidden deep in the past, just one of many names he had used over the years. It was his birth name. The name he had when the whole nightmare that is C-24 began. When a mission goes wrong, C-24 and the life of John 'Reaper' Grimm comes back to haunt him. He's not the only one with a fake name...
Crossover - Doom & Star Trek: 2009 - Rated: K+ - English - Friendship/Drama - Chapters: 26 - Words: 49,045 - Reviews: 26 - Favs: 49 - Follows: 72 - Updated: 10/18/2019 - Published: 2/7/2016 - J. Kirk, L. McCoy/Bones
Of Avatars and Harbingers by
The Shadowscythe reviews
Humanity, a species that has been invaded twice by the Ethereals, their thrall species and occupied by the ADVENT coalition have finally left the Sol system and expanded into the stars. They knew the Ethereals feared something bigger & badder than themselves. They knew the Protheans has been wiped out by the same threat. The time of the cycle has arrived and extinction awaits all.
Crossover - X-Com & Mass Effect - Rated: M - English - Sci-Fi/Horror - Chapters: 17 - Words: 73,632 - Reviews: 41 - Favs: 198 - Follows: 252 - Updated: 10/16/2019 - Published: 11/18/2018 - OC, J. Garson, Shepard, OC
The Catalyst For Revenge by
Jade Tatsu reviews
Shepard chose to destroy Sovereign. The Council then declared war on the SA for that betrayal. The Humans tried to fight but it was a losing battle. Subjugation leading to extinction was not acceptable for making the hard military decision so the Humans chose another path and made a deal with the Reapers. The galaxy and the Cycle would never be the same. AU Eternity beckons.
Mass Effect - Rated: T - English - Adventure/Drama - Chapters: 162 - Words: 1,180,028 - Reviews: 4632 - Favs: 1,789 - Follows: 1,648 - Updated: 10/10/2019 - Published: 10/10/2016 - Ashley W., Illusive Man, Harbinger, Shepard - Complete
Quest of the Furlings - Rewrite by
AerchAngel reviews
Furlings left the Milky Way galaxy in a hurry and no one knew where they went, except for a few. SGC always looked at the empty seat at Heliopolis and wonder where they went. Now with the power to go somewhere, they embark on a journey to find out what happened to them or if they are still around. This is a more comprehensive Re-write - Enjoy
Crossover - Babylon 5 & Stargate: SG-1 - Rated: T - English - Sci-Fi/Suspense - Chapters: 18 - Words: 125,695 - Reviews: 81 - Favs: 120 - Follows: 168 - Updated: 9/28/2019 - Published: 12/20/2017
Stargate Command by
Lordheaven reviews
AU/DS9/TNG/SGC: The war with the Dominion takes a turn for the worse. The sudden cry for help from the Q Continuum diverts the Federation's attention to investigate a mystery buried deep into Earth's past: a secret so dangerous that it divides the Earth in two and reshapes the galaxy.
Crossover - StarTrek: The Next Generation & Stargate: Atlantis - Rated: T - English - Sci-Fi/Mystery - Chapters: 20 - Words: 148,474 - Reviews: 226 - Favs: 187 - Follows: 227 - Updated: 8/25/2019 - Published: 2/5/2013 - Complete
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: 343 - Favs: 709 - Follows: 690 - Updated: 8/7/2019 - Published: 9/13/2017 - Complete
No Gods, No Kings, No Reapers Terra Athernum by
Icarus636 reviews
The dream of Rapture never became a nightmare, under the banner of the UN and Rapture humanity united as one. Now as the Human Commonwealth stands as the only superpower matching The Council in strength and technology, an eternal enemy awakens, but mankind shall not go quietly into the night. HFY fanfic, different humanity, Paragon Sheppard.
Crossover - Mass Effect & BioShock - Rated: M - English - Sci-Fi/Adventure - Chapters: 13 - Words: 117,979 - Reviews: 155 - Favs: 472 - Follows: 550 - Updated: 8/6/2019 - Published: 7/18/2018 - [Shepard, Tali'Zorah] Eleanor L., Elizabeth
The Grave Effect by
SaibotReaper Productions reviews
Following the destruction of The Covenant Empire and Truth, The Gravemind had one last trick up it's sleeve for survival fusing it's entire consciousness with a human host ensuring it's survival. Now a lone marine and The Gravemind venture out beyond the galaxy they once knew to a somewhat familiar yet strange galaxy that is brimming with new possibilities. (On Hiatus)
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 23 - Words: 91,107 - Reviews: 144 - Favs: 331 - Follows: 404 - Updated: 7/27/2019 - Published: 5/16/2017 - Gravemind, OC, J. Garson, Garrus V.
The Reclaimer Effect by
Seawolf321 reviews
It's the eve of the centennial anniversary of the beginning of the Human-Covenant War. A mere twenty years after the discovery of Prothean Ruins on Mars. A simple case of poor communication leads to a brief but violent conflict erupting and leads to the United Earth Government and it's military arm the UNSCDF coming onto the Galactic Stage of politics, mysteries, and adventures.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure - Chapters: 17 - Words: 174,265 - Reviews: 673 - Favs: 1,231 - Follows: 1,689 - Updated: 6/27/2019 - Published: 2/28/2018
Married With Blue Children by
Kachimoochi reviews
A parody of the hit series Married With Children, in Mass Effect form. The Curse of Al Bundy is infinite, it lasts across galaxies, timelines, and universes, What would happen if Al Bundy existed in the twenty-third century?, much of the same really.
Mass Effect - Rated: T - English - Humor/Parody - Chapters: 7 - Words: 13,141 - Reviews: 13 - Favs: 6 - Follows: 7 - Updated: 6/21/2019 - Published: 2/14/2019 - [OC, Liara T'Soni]
Honor-Bound by
The Incredible Muffin reviews
Shepard had thought it was over. The Reapers were defeated, at the cost of her life. Or so she thought. Now, Shepard is faced with the unknown yet again. For the first time, she found herself missing the Reapers...
Crossover - Warhammer & Mass Effect - Rated: M - English - Fantasy/Suspense - Chapters: 54 - Words: 347,701 - Reviews: 1366 - Favs: 1,697 - Follows: 1,683 - Updated: 5/29/2019 - Published: 7/25/2015 - Complete
Mass Effect: War of Empires by
Ranger9000 reviews
In a universe where a scheduling error results in a drastically different humanity then canon. Multiple human empires and spaceborne states square off against eachother and the universe at large in equal parts. How is the universe effected by a divided humanity? As lines are drawn, and war always is looming on the horizon.
Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 12 - Words: 51,728 - Reviews: 75 - Favs: 219 - Follows: 305 - Updated: 5/12/2019 - Published: 2/17/2017 - J. Garson, U. Wrex, Shepard
The Warhammer Effect: Collateral Misfortunes by
BKGeno reviews
In the future, where there is only war, sometimes desperate measures must be taken to secure the survival of a few. But when that measure leads to a place far different from what they know, can the Eldar adapt to a new reality, where there is more than only war? Also, what is a monkey? Picture by timokujansuu on Deviantart. ON HIATUS.
Crossover - Warhammer & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 37 - Words: 276,955 - Reviews: 502 - Favs: 736 - Follows: 945 - Updated: 5/10/2019 - Published: 9/9/2017 - Eldar, Shepard
To change fate by
fanfictionfanaticX reviews
Fate is a weird thing. By trying to stop it or change it, you discover that it has all already been written. Or has it? This is a Stargate and BSG 2003 crossover.
Crossover - Stargate: SG-1 & Battlestar Galactica: 2003 - Rated: T - English - Sci-Fi - Chapters: 28 - Words: 395,824 - Reviews: 360 - Favs: 418 - Follows: 520 - Updated: 5/10/2019 - Published: 12/22/2016
Learn From Thy Neighbor by
Brodusa reviews
Humanity has made a scientific discovery of any races lifetime. (Discontinued up for adoption)
Crossover - X-overs & Mass Effect - Rated: M - English - Parody/Sci-Fi - Chapters: 10 - Words: 37,121 - Reviews: 19 - Favs: 71 - Follows: 77 - Updated: 5/7/2019 - Published: 4/8/2019
The Coming Darkness by
six samurai of dragon order reviews
The darkness is coming. Will the TEC, Advent, and Vasari be able to handle this threat? Or will the split in their people be to much for them to handle?
Crossover - Mass Effect & Sins of a Solar Empire - Rated: M - English - Sci-Fi - Chapters: 2 - Words: 8,748 - Reviews: 14 - Favs: 35 - Follows: 48 - Updated: 4/2/2019 - Published: 5/3/2016 - Illusive Man
The Fall of Phaeton by
Griff1007 reviews
New Vegas awaits the coming storm with bated breath. A confrontation is brewing at Hoover Dam between two ideologies and the enigmatic Mr. House. The Courier may very well hold the key to New Vegas' future. Until a wildcard arrives from the stars. Will they represent a Force Majeure or will they fall to the wasteland like so many before them?
Crossover - StarCraft & Fallout - Rated: M - English - Adventure/Sci-Fi - Chapters: 40 - Words: 197,213 - Reviews: 60 - Favs: 94 - Follows: 129 - Updated: 3/28/2019 - Published: 5/26/2015
Signs and Portents by
Argonaut57 reviews
It is a New Age for the Galaxy, seventy years after the Reaper War. Veteran Spectre Commander Vega is sent to the Terminus Systems to investigator the loss of several ships. But the arrival of new races and sinister strangers on the Councils new space station present a different threat. The year is 2258, the name of the place is Babylon 5.
Crossover - Babylon 5 & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 10 - Words: 44,623 - Reviews: 34 - Favs: 42 - Follows: 48 - Updated: 3/24/2019 - Published: 11/4/2018 - Complete
Mass Glitch by
joshingblock reviews
Warp-jump accidents are few and far in between, even more so are the times where one accidentally jumps to an entirely different universe. Stonewire is one of those unlucky few, and finds himself in a galaxy where his kind is hated for the mere crime of existence. Story not dead/writing it all then post weekly
Crossover - Mass Effect & Starbound - Rated: M - English - Adventure/Sci-Fi - Chapters: 12 - Words: 63,205 - Reviews: 41 - Favs: 150 - Follows: 201 - Updated: 3/21/2019 - Published: 12/3/2017 - [Shepard, Liara T'Soni] Glitch, OC
The Dragon Queens by
Mystborn reviews
Prophesies complete, an immortal Dragonborn and her vampire best friend are left to their own devices. The result? A jointly ruled empire of Nirn that spans the stars. So when Batarians are chased through relay 314 by the Turians into Imperial space, all oblivion breaks loose. How will the Galaxy of Science hold up to the Empire of Magic, Especially one ruled by the Dragon Queens?
Crossover - Elder Scroll series & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 26 - Words: 122,277 - Reviews: 716 - Favs: 2,624 - Follows: 3,069 - Updated: 2/27/2019 - Published: 2/28/2015 - Dragonborn/Dovahkiin, Serana, J. Garson
Honor and Faith by
A Hairy Burrito reviews
After being thrown into the tides of the Warp, the Space Marines of the Iron Sentinels chapter find themselves thrown into the mythical past of mankind and engaged in a war that threatens to see humanity wiped out. Threatened on all sides by Chaos and heresy, will they succumb or remain faithful to the Emperor's Light?
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 19 - Words: 93,038 - Reviews: 176 - Favs: 362 - Follows: 509 - Updated: 2/8/2019 - Published: 9/11/2016
Republic of Terra by
SonoftheLost reviews
From the very begin, we wondered if we are alone. If we have a place in the universe beyond our world. Now we take our steps out of the crib and into worlds beyond our own. Under the command of the Republic of Terra and the Chancellor at the helm, humanity is unified and ready to face anything we may face.
Crossover - Civilization Series & Mass Effect - Rated: M - English - Spiritual/Sci-Fi - Chapters: 6 - Words: 16,354 - Reviews: 29 - Favs: 148 - Follows: 201 - Updated: 2/6/2019 - Published: 5/21/2018
The Imperator Heresy by
Gentleman Bystander reviews
The Emperor of Mankind falls to the Ruinous Powers, salvation comes through his sons. Long form Grimbright/Nobledark study beginning before the Great Crusade and ending in M42.
Warhammer - Rated: T - English - Drama/Family - Chapters: 7 - Words: 47,372 - Reviews: 32 - Favs: 82 - Follows: 95 - Updated: 1/22/2019 - Published: 2/1/2018 - The Emperor, Primarch/s
The Lupercalian Redemption by
OmeganQueen reviews
He was the Arch-traitor who broke the Imperium of Man and shattered the cosmos with the Horus Heresy. One Chaos acolyte sought to bring back the Warmaster in hopes of finishing what the Great War started. Instead, the fool brought a younger and Imperial-loyalist Horus back, and he's not too happy about the state of things. ( Rated M for obvious reasons )
Warhammer - Rated: M - English - Adventure/Sci-Fi - Chapters: 35 - Words: 122,180 - Reviews: 635 - Favs: 1,766 - Follows: 1,582 - Updated: 1/15/2019 - Published: 10/31/2017 - Orks, Space Marines, The Emperor, Sisters of Battle - Complete
Exodus of the Damned by
Codename-SURGEON reviews
The Reapers fell and with them fell our worlds. We drift alone in search of home and hope to one day build again. An artifact found provides a ray of hope. And those few who ventures through will seal our doom or not. Other worlds and other chances gives the Damned needed hope.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 13 - Words: 91,692 - Reviews: 141 - Favs: 371 - Follows: 531 - Updated: 1/11/2019 - Published: 1/17/2016 - T. Lasky, Garrus V., Admiral Hackett
Mass Effect: The New Face of War by
ProfFartBurger reviews
It is said that War never Changes; Men do, through the roads they walk, but War does not. The Humans fought The First War, and alongside the Quarians, the Alliance stands tall against the Galaxy in the face of continued adversity. Now Humanity's place is challenged, their power tested, and age-old beliefs are shattered when a beyond-ancient species is forced onto the playing field.
Mass Effect - Rated: T - English - Sci-Fi/Suspense - Chapters: 62 - Words: 539,845 - Reviews: 1377 - Favs: 2,010 - Follows: 1,981 - Updated: 12/30/2018 - Published: 1/26/2014 - Shepard, OC - Complete
After the End by
Haegr reviews
Commander Jane Shepard has done everything she could to defeat the Reapers. Yet the galaxy is a cruel place and she must once more assemble her team and do the impossible and prevent an even more devastating war. Story set after modded Mass Effect 3, thus with destroyed Reapers but with a still living EDI and Geth. I own nothing and all IP belongs to their respective owners.
Crossover - Warhammer & Mass Effect - Rated: T - English - Sci-Fi/Fantasy - Chapters: 18 - Words: 54,757 - Reviews: 140 - Favs: 206 - Follows: 311 - Updated: 12/22/2018 - Published: 9/28/2016 - J. Garson
A new Emperor by
flaming hunter reviews
What if the Emperor of mankind was reborn in the Dc universe.
Crossover - Warhammer & Green Lantern - Rated: T - English - Sci-Fi/Adventure - Chapters: 4 - Words: 1,713 - Reviews: 29 - Favs: 44 - Follows: 50 - Updated: 12/5/2018 - Published: 11/16/2015
A Battle of Wills by
insinr8 reviews
Following the destruction of the Temple Ship, humanity rises to become stronger than ever, and is determined that they will never again allow any enemy to repeat what the Ethereals did. In Vigilo Confido.
Crossover - X-Com & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 59 - Words: 262,053 - Reviews: 834 - Favs: 1,347 - Follows: 1,580 - Updated: 12/5/2018 - Published: 7/4/2015
Adventures of a Necron Cryptek by
Cirrikan the Technomancer reviews
When a Necron Cryptek through his own experimentation reclaims an aspect of himself he lost from his biotransference, he goes on a journey to assert himself. Seeing his home universe as uncompromising and unyielding, the cryptek leaves with his loyal followers and acquired assets to a place where they hope they can rebuild in peace. Rated T for Violence
Crossover - Warhammer & Justice League - Rated: T - English - Sci-Fi/Adventure - Chapters: 17 - Words: 52,316 - Reviews: 160 - Favs: 592 - Follows: 665 - Updated: 11/21/2018 - Published: 7/25/2017
The Forgotten and the Purged by
emperorsjudgement reviews
We follow the events of the Great Crusade before they are denied, deleted, redacted, changed and outright expunged from Imperial history. It is a time before oaths are sworn by Imperial military personnel including the Emperors own mighty sons to never speak of these exploits again. What happened that was so catastrophic that the Emperor of Mankind decreed that they did not occur?
Warhammer - Rated: M - English - Sci-Fi - Chapters: 51 - Words: 151,594 - Reviews: 20 - Favs: 37 - Follows: 42 - Updated: 10/28/2018 - Published: 4/29/2016
A Krogan misplaced by
Baron Steakpuncher reviews
Urdnot Wrex had not expected the ship he was on to crash, let alone in so desolate an area of the galaxy. Yet to his surprise the planet on which he landed had some... inhabitants. #Blatant First Contact AU
Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 20 - Words: 42,009 - Reviews: 222 - Favs: 696 - Follows: 883 - Updated: 10/26/2018 - Published: 6/19/2017 - U. Wrex, Aethyta
Ascension of Earth's Guardians by
Ciroth reviews
In the wake of the revelations of the Elders' Avatar project, XCOM did what they always do: Anything they had to. Covering events from XCOM2, TFTD, The Martian and Mass Effect, this is the first book in the Protectors series.
Crossover - X-Com & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 8 - Words: 82,116 - Reviews: 21 - Favs: 186 - Follows: 253 - Updated: 10/13/2018 - Published: 8/3/2018
Merged Galaxy Part 1: Tenuous Pacts by
Slipspace Anomaly reviews
Nations collide as 2 alternate versions of the Milky Way Galaxy are joined into 1. As members of the SGC and the UNSC struggle to establish peaceful relations, a new threat emerges. One that includes new enemies from each of their pasts. Co-written with Jon Harper.
Crossover - Stargate: SG-1 & Halo - Rated: T - English - Chapters: 21 - Words: 164,926 - Reviews: 220 - Favs: 356 - Follows: 447 - Updated: 10/8/2018 - Published: 1/30/2017 - H. Maybourne, OC, Master Chief/John-117, C. Halsey
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: 33 - Words: 279,720 - Reviews: 777 - Favs: 760 - Follows: 870 - Updated: 10/6/2018 - Published: 8/28/2012
Galaxy of Pain by
StarMaker674 reviews
A fusion of ME and 40K universes , different in many ways but one thing remains: in the grim darkness of the far future there's only war to the laughter of thirsting gods.
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi/Supernatural - Chapters: 4 - Words: 6,368 - Reviews: 10 - Favs: 23 - Follows: 24 - Updated: 7/16/2018 - Published: 6/12/2018
Hour of the Wolf by
Mountain King reviews
The Battle of Wolf 359, the Federation Fleet faces the monstrous Borg Cube in a desperate attempt to defend sector 001. All seems lost when an ancient warship, the last defender of a dying people, offers it's aid. Changing the destiny of the Alpha Quadrant forever.
Crossover - StarTrek: The Next Generation & Battlestar Galactica - Rated: T - English - Sci-Fi/Drama - Chapters: 44 - Words: 149,611 - Reviews: 589 - Favs: 348 - Follows: 443 - Updated: 6/28/2018 - Published: 6/4/2014
Lorgar's Discovery, Lorgar's Betrayal by
VulkansNodosaurus reviews
An alternate Heresy project in the style of Aurelius Rex's Dornian Heresy. Lorgar led eight of the Traitor Legions in an assault against the Emperor, striking straight for Terra as cults started rebellions on thousands of worlds. But he failed to destroy the Imperium. What was broken has been mended; but what was burned away can never be reforged. Started March 2011.
Warhammer - Rated: T - English - Sci-Fi/Fantasy - Chapters: 20 - Words: 132,224 - Reviews: 22 - Favs: 87 - Follows: 53 - Updated: 6/19/2018 - Published: 11/22/2014 - Chaos Space Marines, Fulgrim, Space Marines, The Emperor - Complete
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: 13 - Words: 138,222 - Reviews: 745 - Favs: 2,103 - Follows: 2,705 - Updated: 5/30/2018 - Published: 3/29/2016
For the Motherland! by
Gnaoh El Nart reviews
[Rewrite] [AU] After bloodshed and hardship, humanity is as close as it can get to total unity. Now, they are eyeing toward the stars. What will be awaiting them over the horizon? Prosperity or more bloodshed? Either way, they must step forward, for such is the call of their Motherland. To the stars, on the roads left behind, they shall crave their own names into the History.
Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 16 - Words: 116,109 - Reviews: 124 - Favs: 296 - Follows: 352 - Updated: 5/29/2018 - Published: 9/17/2017
Long Black Road by
FrankLeroux reviews
The one that "you send to kill the f***ing boogeyman" wakes up in the future to face the ultimate boogeyman. Somebody PLEASE get this man...a gun! Rated M for language, for sexual situations, and for John Wick shooting lots of things in the face. Set in the same Mass Effect universe as my other story (Tango 'Til They're Sore) but you don't have to read that one to read this one.
Crossover - Mass Effect & John Wick - Rated: M - English - Sci-Fi/Crime - Chapters: 25 - Words: 136,384 - Reviews: 443 - Favs: 2,005 - Follows: 1,849 - Updated: 5/14/2018 - Published: 1/26/2017 - Complete
Foundations in Scarlet (Renegades Saga, Book 8) by
Renegades Inc reviews
As the Imperium burns, Horus Lupercal calls a gathering to plan his war against the Chaos Emperor, and the peace that will come after. What was intended as a show for the remembrancers and a venue for sealing alliances will, however, be a more interesting - and more bloody - experience than anyone had planned. Written by VulkansNodosaurus, 2013-14. Takes place early 004.M31.
Warhammer - Rated: M - English - Sci-Fi/Fantasy - Chapters: 21 - Words: 37,995 - Reviews: 6 - Favs: 21 - Follows: 13 - Updated: 5/3/2018 - Published: 3/9/2018 - Chaos Space Marines, Space Marines, Adeptus Mechanicus - Complete
The Lost Battlefleet by
JSUMN reviews
And Imperial Battlefleet is lost in a warp storm and finds itself in an unknown location. They will be faced with circumstances that will put them in both mortal and moral danger. T for Possible Language and Violence. Updates irregular, this is a private project so it updates whenever the author stops being lazy and writes.
Crossover - Warhammer & Mass Effect - Rated: T - English - Drama/Suspense - Chapters: 3 - Words: 10,781 - Reviews: 34 - Favs: 137 - Follows: 190 - Updated: 4/30/2018 - Published: 3/31/2018
Bad Things Come in Twos by
bullethead reviews
50,000 years ago, the Protheans & Reapers annihilated each other. Now, in 323 Post Disaster, a group of alien explorers cross paths with Tekkadan at Saisei. Now Tekkadan and Teiwaz are playing a high stakes game, with the fate of humanity in the balance. AU for Mass Effect, AU for IBO after Episode 9.
Crossover - Mass Effect & Mobile Suit Gundam: Iron-Blooded Orphans - Rated: T - English - Sci-Fi/Drama - Chapters: 17 - Words: 51,428 - Reviews: 42 - Favs: 201 - Follows: 222 - Updated: 4/14/2018 - Published: 12/12/2016
To Boldly Go into the Grim-Darkness of the Far Future by
Historiographer Theraxus reviews
Worlds collide as Star Fleet is exposed to the galaxy spanning empire that is the Imperium of Man. The Imperium expects a brief Crusade. Starfleet thinks the Imperium is the worst their respective galaxy has to offer. Both are in for rude awakenings as cultures, technologies, and empires clash. Note: This will not be a UvU steamroll they will be somewhat balanced according to fluff
Crossover - StarTrek: Other & Warhammer - Rated: M - English - Sci-Fi/Fantasy - Chapters: 9 - Words: 56,773 - Reviews: 36 - Favs: 70 - Follows: 88 - Updated: 4/10/2018 - Published: 5/30/2016
Contact of Races by
wilkins75 reviews
Sequel to Contact at Kobol (Stargate/Battlestar). The Race has thrived for hundreds of thousands of years and who recently conquered their 5th world are heading toward Tosev 3, Earth believing the conquest to be ease against the sword swing savages. Little do they know that those sword swing savages are now one of if not the most powerful force in the Galaxy, the Tau'ri.
Crossover - Stargate: SG-1 & Worldwar series - Rated: T - English - Sci-Fi/Drama - Chapters: 25 - Words: 210,603 - Reviews: 1205 - Favs: 1,003 - Follows: 906 - Updated: 4/3/2018 - Published: 6/17/2017 - S. Carter - Complete
First Contact: Colonial War by
Apollonir reviews
A documentary that follows the most important battles, decisions and politics of what was dubbed the Great War by humanity, or the Colonial War by the Citadel, starting from Relay 314 to Armistice. The story of the bloodiest war in recorded human story, with a death toll in the billions. This is what happens when an unstoppable force meets an immovable object.
Crossover - Battlestar Galactica: 2003 & Mass Effect - Rated: T - English - Drama/Sci-Fi - Chapters: 4 - Words: 9,258 - Reviews: 77 - Favs: 245 - Follows: 302 - Updated: 3/22/2018 - Published: 1/2/2018
When Death Calls (Renegades Saga, Book 7) by
Renegades Inc reviews
The civil war caused by the Emperor's abandoning the Imperial Truth rages on. Mortarion of the Death Guard and Perturabo of the Iron Warriors, allies of rebel Warmaster Horus, have made peace with each other, but now face the knowledge of being betrayed by one of their favored sons. The truth, though, is worse than they think. Written by gothik, 2012-2013. Takes place late 003.M41.
Warhammer - Rated: M - English - Sci-Fi/Fantasy - Chapters: 7 - Words: 37,360 - Reviews: 3 - Favs: 23 - Follows: 14 - Updated: 3/9/2018 - Published: 12/26/2017 - Chaos Space Marines, Space Marines - Complete
CRIMSON DAWN: The Imperium Comes To 1984 by
Spartan-168-Django reviews
It seemed like just another routine military operation for the Imperium: their forces were in the process of landing and retaking a rebellious planet. But when a Warp anomaly strikes, the fighting men and women of the Imperium suddenly find themselves transported across time and space to a new world: Holy Terra itself, but at a far earlier time. This is 1984.
Warhammer - Rated: M - English - Sci-Fi/Parody - Chapters: 28 - Words: 156,829 - Reviews: 296 - Favs: 327 - Follows: 359 - Updated: 2/24/2018 - Published: 1/16/2017
Mass Effect: Intervention by
Pit Nyburus reviews
Shepard is back from the dead and primed to go after the collectors. Now she needs to gather a team and hit them hard. There are some new face, some old friends and even some unexpected arrivals and Allies. How will the newcomers from the Grim Dark 41st Millennium effect the way of life in the Mass Effect universe?
Crossover - Mass Effect & Warhammer - Rated: M - English - Sci-Fi - Chapters: 3 - Words: 18,943 - Reviews: 26 - Favs: 43 - Follows: 95 - Updated: 2/21/2018 - Published: 5/24/2015 - Imperial Guard, J. Garson, Garrus V.
In Torfan, no-one cares if you scream by
magkiln reviews
It has been sixth months since the Skyllian Blitz and the galaxy has started to move on. But although their rhetoric has lost its edge, the United Systems are not prepared to let this insult pass. Twenty years ago, they taught the galaxy a lesson. Now it seems that some people need a refresher course.
Crossover - Aliens/Predator & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 8 - Words: 24,713 - Reviews: 197 - Favs: 526 - Follows: 495 - Updated: 1/31/2018 - Published: 4/20/2017 - Complete
Battlestar Invictus by
CALiGeR190 reviews
Battlestar Invictus: flagship of the colonial fleet. In a desperate bid to escape destruction at the hands of an old enemy, the ship finds itself lost out in a place unknown to the colonials... and horrors they could scarcely imagine lurk in the twisted galaxy they have been dropped into.
Crossover - Warhammer & Battlestar Galactica: 2003 - Rated: T - English - Sci-Fi/Adventure - Chapters: 16 - Words: 61,260 - Reviews: 86 - Favs: 79 - Follows: 101 - Updated: 1/22/2018 - Published: 11/3/2016
Black Banners of War by
AstraMilitarum reviews
A Rogue Trader Fleet, transporting an Imperial Guard Armored Company and a Skitarii Maniple, finds its place in the Mass Effect Universe. Lost from the sight of the Emperor and Omnissiah, the Imperials must brave this new world, finding a softer place than the Grim, Dark future.
Crossover - Warhammer & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 12 - Words: 54,382 - Reviews: 270 - Favs: 532 - Follows: 754 - Updated: 1/21/2018 - Published: 5/26/2017 - Imperial Guard, Rogue Traders, Adeptus Mechanicus, J. Garson
Bright Swords (Renegades Saga, Book 6) by
Renegades Inc reviews
The galaxy is in flames, yet brilliant flames cast deep shadows. Warmaster Horus of the Coalition, with unlikely allies, sets out to forge new blades to fight in that darkness, against the forces of Chaos, against the man Horus once called Father - but does he truly understand where this path will lead them? Written by Deus Mortis, since 2012. Takes place beginning late 003.M31.
Warhammer - Rated: M - English - Sci-Fi/Fantasy - Chapters: 16 - Words: 28,939 - Reviews: 8 - Favs: 28 - Follows: 19 - Updated: 12/21/2017 - Published: 11/17/2016 - Chaos Space Marines, Daemons, Eldar, Space Marines - Complete
Jurassic Galaxy Chronicles: First Contact by
Nicogen reviews
After the events of Jurassic World a virus containing trace amounts of the Indominus Rex's DNA starts infecting Humans. Desperate for a cure they turn to the one man who can stop it, Dr. Henry Wu. Too Late is it discovered it was all apart of his plan. Humanity is gone! Replaced by a race of Dino Hybrids but little do they realize that he might have saved them from the darkness.
Crossover - Jurassic Park & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 17 - Words: 85,426 - Reviews: 462 - Favs: 1,000 - Follows: 1,102 - Updated: 12/19/2017 - Published: 7/27/2015 - Velociraptor, Indominus Rex, Saren A., OC
A New Dawn by
Nqisitor reviews
The 1st Exploration fleet under Admiral James Anderson enters Gargantua to explore a new world and stumbles upon the Mass effect Universe. How will the Citadel species react to another humanity that freely uses AI and Dragon lookalikes with access to the Shroud? Only time will tell.
Crossover - Mass Effect & Stellaris - Rated: T - English - Chapters: 6 - Words: 12,508 - Reviews: 44 - Favs: 203 - Follows: 267 - Updated: 12/16/2017 - Published: 5/17/2017
An Unpleasant Surprise by
KE12 reviews
AU: After the first contact war Humans go into hiding before the council can begin peace talks, 200 years later a mysterious mechanical monster shows up in their space, and Shepard wants to know what it is, and if they should fear it.
Mass Effect - Rated: K+ - English - Adventure/Sci-Fi - Chapters: 18 - Words: 59,086 - Reviews: 110 - Favs: 491 - Follows: 570 - Updated: 12/15/2017 - Published: 5/8/2017 - J. Garson, Garrus V., Liara T'Soni
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: 19 - Words: 21,235 - Reviews: 83 - Favs: 143 - Follows: 198 - Updated: 11/12/2017 - Published: 2/27/2017
Mass Effect: Chimera by
RedLightningD608 reviews
During the First Contact war, a virus was unintentionally unleashed upon humanity, a virus that wiped out the entire species within 3 years... The council memories the race, declaring it a galactic tragedy that a young race died so in-expectantly... However Humanity isn't as dead as they seem, but life as a parasite species can be rough. ( possible rewrite )
Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 10 - Words: 41,298 - Reviews: 64 - Favs: 254 - Follows: 305 - Updated: 10/18/2017 - Published: 6/18/2017 - J. Garson, Joker, Jack
The Eternal Cycle by
ZF IAnswerToNoOne reviews
The war against Amon is over. The Terrans and Protoss create an alliance after a 20 year unofficial ceasefire. When the Zerg join, the Sector has nothing to worry about, right? Well, what about the discovery of a new government and an enemy that could be worse than Amon? FemShep.
Crossover - StarCraft & Mass Effect - Rated: T - English - Adventure - Chapters: 10 - Words: 56,895 - Reviews: 122 - Favs: 417 - Follows: 538 - Updated: 9/29/2017 - Published: 11/7/2016 - J. Garson, OC
A New Watch by
Kingly Crimson reviews
A year after the ending of the Second Omnic Crisis, thing's on earth have changed for the better with Overwatch back in the picture. However with the Creation of the new Slipstreamer Rocket being Tested in the Sol System by Winston, The People of earth find out they aren't alone. And they sure as hell aren't safe either. Time to call Overwatch.
Crossover - Mass Effect & Overwatch - Rated: T - English - Sci-Fi/Adventure - Chapters: 5 - Words: 47,162 - Reviews: 147 - Favs: 554 - Follows: 695 - Updated: 9/14/2017 - Published: 5/1/2016
Mass Effect: Biohazard by
spart1339 reviews
Humanity has not only entered the galactic scene but their sins as well. Virus' thought gone are now appearing on different planets, the one responsible are not stopping. In an effort to combat the threat of bioterror the Bioterrorism Security Assessment Alliance, B.S.A.A. is reestablished to combat the threat. (A One-Shot story)
Crossover - Resident Evil & Mass Effect - Rated: M - English - Sci-Fi/Suspense - Chapters: 1 - Words: 12,996 - Reviews: 7 - Favs: 34 - Follows: 28 - Published: 8/20/2017 - Complete
Radioactive Sunshine of the Spotless Galaxy by
Alexeij reviews
On the example of the Founders, humanity recovers from the Great War and expands into the stars. Centuries pass, and when a scorned ally turns enemy, the necessities of war break the technological and cultural stagnancy gripping the Council races. What happens when different players converge on Relay 314, led by the writings of an old, mad Matriarch? [AU]
Crossover - Fallout & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 5 - Words: 18,816 - Reviews: 85 - Favs: 273 - Follows: 416 - Updated: 8/20/2017 - Published: 8/5/2017
Mass Effect: Lost Guardians by
RedLightningD608 reviews
Set 50 000 years after the demise of the Prothean/Human species, what Liara T'soni discovered behind Relay 314 will rip apart the fabric of life as she knows it.
Mass Effect - Rated: K+ - English - Sci-Fi/Friendship - Chapters: 4 - Words: 14,115 - Reviews: 39 - Favs: 217 - Follows: 294 - Updated: 8/15/2017 - Published: 6/4/2017 - Liara T'Soni, U. Wrex, Joker, Sovereign
Mantle Across a Starry League by
Reichenfaust reviews
Megaverse. A grand vision, on how Mass Effect, and others will be affected by a humanity forged from the influences of 1980's-2000's Sci-Fi and such. Prepare for BattleMech's, Powered Armour's, Fusion, Energy Weapons, Psychics, Magics, and more. How will the Citadel deal with a humanity that has seen and has Cyborgs, Super-Soldiers, BattleMech's, WarShips, with more to come?
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Fantasy - Chapters: 11 - Words: 111,985 - Reviews: 39 - Favs: 162 - Follows: 155 - Updated: 8/2/2017 - Published: 11/7/2016
Mass Effect: Degradation by
DrakeCross reviews
The USG Ishimura has arrived at the Citadel, bringing it's deadly cargo to the station and an unsuspecting galaxy. Shepard and his team now face a new threat after just surviving their suicide mission on the Collector Base, something that is possibly as horrifying as the Reapers. The Illusive Man and other shadowy forces also seek the dark secrets hidden on the mining ship.
Crossover - Mass Effect & Dead Space - Rated: M - English - Sci-Fi/Horror - Chapters: 6 - Words: 25,479 - Reviews: 33 - Favs: 140 - Follows: 144 - Updated: 6/16/2017 - Published: 8/29/2016 - [Shepard, Tali'Zorah] Isaac C.
Necessary Monsters by
RaptorusMaximus reviews
Comander Shepard is a Hero. A paragon of all that is good about sentient life in the galaxy. But she must stand against a force that cares not for heros, for honor, for the sanctity of life. Luckily, newcomers have arived who share these traits, and will work parallel to Shepard in the darkness; the Shadows to her Light. After all, no-one expects the Imperial Inquisition.
Crossover - Warhammer & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 11 - Words: 79,361 - Reviews: 196 - Favs: 418 - Follows: 592 - Updated: 5/12/2017 - Published: 7/21/2016 - Eldar, Inquisition, Deathwatch, J. Garson
Exodus by
CodeCid reviews
Andromeda, with a nuka-cola flavor.
Crossover - Fallout & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 2 - Words: 16,598 - Reviews: 12 - Favs: 42 - Follows: 60 - Updated: 5/12/2017 - Published: 4/29/2017 - Scott R., Sara Ryder
Someone had blundered by
magkiln reviews
A turian scout force sets out to patrol empty starsystems. A human exploration fleet makes ready to approach a dormant mass relay. Soon their paths will cross and if they fail to make peaceful contact, the consequences will be deadly. Rated T for violence
Crossover - Aliens/Predator & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 38 - Words: 144,248 - Reviews: 805 - Favs: 1,009 - Follows: 949 - Updated: 4/20/2017 - Published: 4/25/2015 - Predator/Yautja, Illusive Man, Councilor Tevos, Councilor Sparatus - Complete
Fugax Momentum by
tcpanter reviews
As the Great Crusade grinds steadily onwards the Astartes of the XIV Legion find themselves trapped by heretics and Xenos in a galaxy they do not recognise. When their offer of friendship is rejected the Galactic Republic has no choice but to fight. Will a Republic that has stood for peace for over 25,000 years triumph over the rapacious warriors of the Emperor of all man kind?
Crossover - Star Wars & Warhammer - Rated: M - English - Sci-Fi/Fantasy - Chapters: 24 - Words: 41,885 - Reviews: 58 - Favs: 77 - Follows: 95 - Updated: 4/19/2017 - Published: 5/12/2015
Terran Federation: Contact by
L4 of the WEST reviews
For more than 20 years, the Terran Federation's path into the darkness beyond Earth has been marked by war, betrayal, and bugs. Every alien they met in the blackness of space has been hostile, pushing the region on a path to another great interstellar war. But sometimes, you get lucky, will the 6th time over Shanxi be it?
Crossover - Starship Troopers & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 28 - Words: 164,615 - Reviews: 395 - Favs: 1,112 - Follows: 1,092 - Updated: 4/16/2017 - Published: 8/7/2014 - Complete
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. Warning, HFY. Viewers discretion is advised
Crossover - Mass Effect & World in Conflict - Rated: T - English - Parody/Humor - Chapters: 11 - Words: 56,871 - Reviews: 120 - Favs: 455 - Follows: 604 - Updated: 4/11/2017 - Published: 6/24/2015 - U. Wrex, Tali'Zorah, Saren A., OC
Balaho Effect by
Oledom reviews
In the Year 2142, Unggoy explorers on Buwan discovered the remains of an ancient spacefaring civilization. They called it the greatest discovery in Unggoy history The civilizations of the galaxy call it. Mass Effect
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Humor - Chapters: 9 - Words: 14,150 - Reviews: 53 - Favs: 141 - Follows: 139 - Updated: 4/11/2017 - Published: 1/28/2017
The Swarm by
RaptorusMaximus reviews
An accident in a far away corner of the universe introduces a new threat to the galaxy a long time ago and far, far away...(On Hiatus for the foreseeable future)
Crossover - Star Wars & Warhammer - Rated: T - English - Sci-Fi - Chapters: 8 - Words: 20,354 - Reviews: 30 - Favs: 97 - Follows: 126 - Updated: 3/1/2017 - Published: 5/21/2014 - Tyranids
Storm of Iron by
BaronVladimirHarkonnen reviews
It is the 41st Millennium. Warmaster Perturabo readies his 14th Crusade as Abaddon readies his next Black Crusade. The Wolftime has come, and the hour of destiny is nigh. The Lost Ones return and are found, and as the Primarchs reunite, Chaos flexes its own strength, gathering the Fallen Ones. I do not own 40K, GW does.
Warhammer - Rated: M - English - Sci-Fi/Tragedy - Chapters: 13 - Words: 21,857 - Reviews: 15 - Favs: 36 - Follows: 37 - Updated: 1/11/2017 - Published: 2/25/2016 - Chaos Space Marines, The Emperor, Primarch/s
Stargate Mass Effect by
InHuman Englishman reviews
Set after the last SG1 film and Atlantis finale. On a planet at the edge of the stargate network in the Milky Way galaxy, a Citadel commissioned exploration fleet is about to make a a monumental discovery and the people of Shaanxi are going to meet their neighbours. This is my attempt to smash together to well written universes without ruining them. Sorry, no working title yet
Crossover - Stargate: SG-1 & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 6 - Words: 15,006 - Reviews: 188 - Favs: 539 - Follows: 831 - Updated: 12/18/2016 - Published: 4/3/2014
Drifting fleet by
Hassarn reviews
After an anomaly shows up in middle of Turian space, followed by a massive dead fleet from an unknown race, the future of Mass Effect universe will be re-written. Up for adoption. Message me for details
Crossover - Mass Effect & Sins of a Solar Empire - Rated: T - English - Sci-Fi/Fantasy - Chapters: 5 - Words: 9,655 - Reviews: 69 - Favs: 126 - Follows: 147 - Updated: 11/18/2016 - Published: 7/2/2016
The Next Great Journey by
alanvaladez reviews
After the destruction of Requiem and an attack against Earth, both the UNSC and Covenant Separatist form the Systems Alliance. Then a discovery in the Deca-5 system changes everything for all sides. Cold War like conflict, lots of ONI , AU for Mass Effect and a council that actually thinks before it acts.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Drama - Chapters: 19 - Words: 150,316 - Reviews: 207 - Favs: 552 - Follows: 578 - Updated: 10/30/2016 - Published: 9/8/2014 - Master Chief/John-117, OC, Saren A., OC - Complete
Hostile First Contact for the Federation (under rewrite) by
charly120 reviews
The USS Normandy NCC-1702-A Captained by Desiree Shepard is on a mission to remove the Mass Relay from the near by Federation Colony of Shanxi. The Turians stumble upon the operation and act like turians causing more problems then the ME universe needs. This a AU story, and co-written with Reven207. Story rated M. I DO NOT OWN MASS EFFECT OR STAR TREK. Rating changed for language
Crossover - StarTrek: Other & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 6 - Words: 41,199 - Reviews: 155 - Favs: 534 - Follows: 713 - Updated: 8/20/2016 - Published: 9/6/2015 - J. Garson, Ashley W.
From the Ashes of Extinction by
charly120 reviews
With the Alien attack of 1996 and again twenty years later, Humanity had learned to always be cautious when dealing with anything alien. Never again would Humanity be surprised and brought to the brink of extinction. Reverse engineering the alien technology Humanity rebuilt their planet and went on to colonize their solar system. Rest of summary at beginning of each chapter.
Crossover - Mass Effect & Independence Day - Rated: M - English - Sci-Fi - Chapters: 7 - Words: 10,154 - Reviews: 135 - Favs: 504 - Follows: 639 - Updated: 8/20/2016 - Published: 5/14/2016
The Quick and Easy Path by
SovereignGFC reviews
USS Voyager has just passed a nebula with elevated neutrino emissions. Despite the possibility of a way home, Janeway orders her ship to continue on. Millions of light-years away, a war against extragalactic invaders has become dire, leading the New Republic to send a ship-of-last-resort to a distant galaxy in hopes of finding a place to escape the invaders...
Crossover - Star Wars & StarTrek: Voyager - Rated: T - English - Sci-Fi/Adventure - Chapters: 48 - Words: 65,727 - Reviews: 24 - Favs: 59 - Follows: 60 - Updated: 7/17/2016 - Published: 3/27/2016 - Complete
The Emperor's Will (Renegades Saga, Book 4) by
Renegades Inc reviews
Warmaster Horus Lupercal's Coalition is beginning its galactic war against the power of the Chaos Emperor. Said Emperor sends his son Vulkan to ascertain the loyalties of Jaghatai Khan, Primarch of the White Scars. Meanwhile, strange events begin on Holy Terra itself, on a continent once known as Australia. Written by gothik, 2012. Takes place early 003.M31.
Warhammer - Rated: M - English - Sci-Fi/Fantasy - Chapters: 7 - Words: 38,117 - Reviews: 11 - Favs: 35 - Follows: 34 - Updated: 6/26/2016 - Published: 2/15/2015 - Chaos Space Marines, Space Marines, The Emperor - Complete
Dark Order saga: Beginning by
Cypher Raige reviews
They say a man's dying wish can be the most powerful thing in the world, able to change the fate of millions. At the end of the Horus Heresy, the Warmsater made one such wish, allowing one Chaos Space Marine to elude the clutches of the Dark Gods. Now this warrior can cause the destuction of the Imperium, but he can also be it's salvation from darkness and Chaos.
Warhammer - Rated: K - English - Adventure/Sci-Fi - Chapters: 4 - Words: 6,519 - Reviews: 4 - Favs: 12 - Follows: 20 - Updated: 5/26/2016 - Published: 1/5/2016 - Chaos Space Marines, Space Marines, The Emperor, OC
The Ultimate Killing Machine by
KE12 reviews
What would happen if the ultimate killing machines of the Star Trek universe, the Borg, met the 'pinnacle of evolution' from the Mass Effect Saga? Inside is my take on what would happen if the two titans of death ever met on the battlefield (Or space in this instance). Meanwhile the Enterprise finds its self lost in unknown space...
Crossover - StarTrek: The Next Generation & Mass Effect - Rated: K - English - Sci-Fi/Mystery - Chapters: 14 - Words: 35,336 - Reviews: 57 - Favs: 117 - Follows: 128 - Updated: 5/7/2016 - Published: 12/16/2014 - Data, J. Picard, EDI, Shepard
Crucible - Super Weapon or Trap? by
BadLoki reviews
What if a certain someone that had been monitoring the Mass Effect reality had finally had enough? Mostly Mass Effect with a dash of Trek.
Crossover - StarTrek: The Next Generation & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 21 - Words: 90,576 - Reviews: 267 - Favs: 553 - Follows: 670 - Updated: 5/4/2016 - Published: 2/4/2016 - Q, Shepard, D. Anderson, Illusive Man
The Quantum Error by
Rob Sears reviews
Sam McLeod just had a bad day, but it is about to get even worse. When he becomes trapped inside another universe after a fateful decision, Sam is not elated at the second chance; he is horrified. With his entire world turned upside down, Sam has to adapt to his new climate and use his semi-good judgment for one purpose: to avoid getting involved with anything at any cost.
Mass Effect - Rated: M - English - Sci-Fi/Romance - Chapters: 24 - Words: 237,255 - Reviews: 216 - Favs: 440 - Follows: 348 - Updated: 4/23/2016 - Published: 10/23/2015 - OC - Complete
Fallout: Stardust by
M.B.Liddle reviews
Humanity has escaped it's blighted cradle! Many decades ago, intrepid citizens from the four corners of the Wasteland made their escape on the mighty Vault-Tec Arc. Now the newly settled Promised Land sector poises on the precipice of a new discovery that will shake the fragile order. Old enemies will rise up from places forgotten, and new heroes will have to rise to meet them.
Crossover - Fallout & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 4 - Words: 21,337 - Reviews: 16 - Favs: 66 - Follows: 86 - Updated: 4/20/2016 - Published: 1/13/2016
The Legacy of the Prophets by
Goodpie2 reviews
H.P. Lovecraft was more than just a writer, though he didn't know it. So when humans, decades after his death, find certain artifacts, they look to his work for guidance. But it isn't enough. Forced to flee their home, Humanity stumbles upon a group of races with no knowledge of the Eldritch. To Humanity, the Council is naive and ignorant. To the council, the humans are lunatics.
Crossover - Mass Effect & Cthulhu Mythos - Rated: T - English - Sci-Fi - Chapters: 7 - Words: 33,135 - Reviews: 221 - Favs: 939 - Follows: 1,113 - Updated: 4/16/2016 - Published: 2/9/2016
A Dark Dawn by
Ave Imperium reviews
A new race was discovered and annihilated. A century passed and Citadel space forgot, but Humanity never did.
Mass Effect - Rated: T - English - Horror/Adventure - Chapters: 36 - Words: 143,972 - Reviews: 1043 - Favs: 2,426 - Follows: 2,278 - Updated: 4/12/2016 - Published: 8/21/2014 - Tali'Zorah, Shepard - Complete
Of Cats and Dark Energy by
Argonaut57 reviews
Soon after Commander Adam Shepard brought the 'Normandy' and its crew back through the Omega 4 Relay, he's in demand again! Two incidents, at opposite ends of the Galaxy, need his attention. But first, he must deal with the blue box that just appeared in Engineering and the massive ship floating dead ahead! Guest starring the 12th Doctor. Legion not activated. Adept!Shepard.
Crossover - StarTrek: The Next Generation & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 8 - Words: 35,441 - Reviews: 26 - Favs: 45 - Follows: 40 - Updated: 3/16/2016 - Published: 2/4/2016 - Complete
Imperium Aeternit by
ArcturusWolf reviews
Nirn has been unified under the banner of the Empire, and its subjects reach to the stars. Fearing contact by a hostile species, they build up their military might; what will happen when an intrepid Batarian slaver ring opens a Mass Relay and attacks this Empire? Will they ever accept peace? M: V/L
Crossover - Elder Scroll series & Mass Effect - Rated: M - English - Chapters: 25 - Words: 166,991 - Reviews: 569 - Favs: 1,465 - Follows: 1,429 - Updated: 3/11/2016 - Published: 7/24/2013 - Dragonborn/Dovahkiin, J. Garson - Complete
In the Hands of Traitors by
Leman Rustle reviews
In the dark future of the 41st millennium there is only war. And from this universe something has come. Several somethings. They maybe odd and slightly nefarious but Commander Jane Shepard will take all the help she can get in the fight against the Reapers. Even if that help comes in the form of traitors.
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 3 - Words: 7,148 - Reviews: 14 - Favs: 20 - Follows: 45 - Updated: 2/14/2016 - Published: 1/11/2015
the Walking Death Korps by
Doomsdayguy12345 reviews
A Death Korps Krieger had been fighting in a war in the name of the Emperor when by his misfortune he had been blown into a Warp hole, instead of the painful existence that the Warp promises he fell onto hard soil, only to be greeted by a new enemies and people. Will he be able to serve his purpose, while his morals are tested by these strange garbed people?
Crossover - Warhammer & Walking Dead - Rated: T - English - Family/Sci-Fi - Chapters: 21 - Words: 37,000 - Reviews: 94 - Favs: 241 - Follows: 259 - Updated: 12/5/2015 - Published: 3/6/2015
Radioactive Dawn by
Bearsbandit53 reviews
Inspired by erttheking's From the Ashes, this is a different take on what happens when a space faring Fallout universe suddenly finds itself meeting its galactic neighbors at the onset of a Reaper Invasion. See what happens when humanity enters the stage and does not bow to the will of those deeming to be superior.
Crossover - Fallout & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 20 - Words: 141,016 - Reviews: 378 - Favs: 518 - Follows: 594 - Updated: 11/22/2015 - Published: 5/20/2013
Mass Effect: Synthesis by
Jade Tatsu reviews
"To the Sol Alliance and all of Humanity, greetings. I am Harbinger and I have traveled across the galaxy to meet you." Shepard wasn't the first to reach the Catalyst, eons ago, someone else did and they chose synthesis, embedding the desire in the Reapers. They've searched for organics to merge with ever since and now they've found them. AU, First Contact, Humans / Reapers
Mass Effect - Rated: T - English - Adventure/Drama - Chapters: 39 - Words: 203,198 - Reviews: 1747 - Favs: 2,780 - Follows: 1,945 - Updated: 4/18/2015 - Published: 11/5/2014 - J. Garson, Harbinger, Garrus V., Saren A. - Complete
The Lost Tribe by
wilkins75 reviews
during the victory tour celebrating five years since the end of thee Reaper war, the Normandy travels to the Cronian Nebula to let Javik put the ghost of his dead team to rest only to discover something that will rewrite history of not just humanity but the galaxy as a whole. Male solider Sheppard/Ash
Crossover - Battlestar Galactica: 2003 & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 59 - Words: 206,051 - Reviews: 802 - Favs: 572 - Follows: 513 - Updated: 7/12/2014 - Published: 7/20/2012 - Shepard - Complete
Mass Effect: The First War by
ProfFartBurger reviews
The Prothean Ruins weren't. They contained little more than mentionings of an Alien Society; as a result, humanity develops on a completely different path than what was intended, and when first contact is made not with the Turians, but a desperate, destitute race viewed as beggars and thieves, how will this dying race change Humanity? And how will Humanity change the Galaxy? *A/U!*
Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 22 - Words: 200,906 - Reviews: 1955 - Favs: 4,277 - Follows: 3,120 - Updated: 1/12/2014 - Published: 1/26/2013 - OC - Complete
Clash of Federations by
RenS reviews
An incident in the Earth-Minbari War accidently creates a way into the Star Trek universe, which is at war in itself. Each universe now has to deal with a war in the other universe!
Crossover - Babylon 5 & TV X-overs - Rated: T - English - Sci-Fi - Chapters: 30 - Words: 208,435 - Reviews: 264 - Favs: 256 - Follows: 252 - Updated: 5/26/2012 - Published: 2/25/2005
Hammerhand by
Colonel-Mustard1990 reviews
Honour the Chapter, honour the Emperor, honour the Imperium. Easy oaths to keep when in a world you can understand. Far, far harder, when a place steeped in heresy calls for aid and duty forces your hand to answer.
Crossover - Warhammer & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 37 - Words: 112,150 - Reviews: 200 - Favs: 976 - Follows: 562 - Published: 2/5/2011 - Complete
Time of Ending: the 40k Finale by
nicholasakira reviews
13000 years after Horus, the Imperium is at its breaking point. The space marines are dying off and chaos is ready to claim the galaxy. This is the story of the epic conclusion of the Imperium's wars for survival.
Warhammer - Rated: T - English - Sci-Fi/Adventure - Chapters: 54 - Words: 165,864 - Reviews: 54 - Favs: 193 - Follows: 85 - Published: 5/1/2010 - Complete
Still Not in Kansas by
Soledad reviews
A Babylon5 - Star Trek Voyager crossover, based on the events of the 3rd season episode 'Grey 17 is Missing'. Story complete.
Crossover - Babylon 5 & StarTrek: Voyager - Rated: T - English - Adventure/Romance - Chapters: 21 - Words: 74,376 - Reviews: 220 - Favs: 247 - Follows: 108 - Updated: 11/7/2004 - Published: 3/27/2004 - L. Alexander, Vir, Chakotay, Kes - Complete