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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: 741 - Favs: 1,093 - Follows: 1,322 - Updated: 7/17 - Published: 7/15/2015 - D. Anderson, Admiral Hackett, OC
The Good Shepherd: Season One by Dingo32 reviews
In her time Carrie white was the first human biotic, but she was driven to insanity, slaughter and apparent suicide by the cruelty of those around her. In another age her gift of natural biotics holds the key to a better life for those of her ilk, but that may not be all she has to offer the galaxy. Undergoing rewrite.
Crossover - Mass Effect & Carrie - Rated: M - English - Sci-Fi/Supernatural - Chapters: 3 - Words: 28,421 - Reviews: 26 - Favs: 75 - Follows: 111 - Updated: 7/17 - Published: 5/6/2016
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: 9 - Words: 102,160 - Reviews: 78 - Favs: 204 - Follows: 288 - Updated: 7/16 - Published: 3/7/2019 - Imperial Guard, OC, Shepard
Place of Our Legacy by firstprime1230 reviews
Earth has been overrun by the forces of the Ori. Beaten, demoralized and on the run in the Ancient city of Atlantis the survivors of Earth make a desperate gamble to save what little they have left. Arriving in a galaxy so different from their own, can they uphold the legacy left to them by the races that came before? And save a galaxy doomed to a suffer a fate worse than death.
Crossover - Stargate: SG-1 & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 15 - Words: 194,967 - Reviews: 484 - Favs: 1,020 - Follows: 1,406 - Updated: 7/15 - Published: 4/30/2020
The Milky Way's Solo by Likeableheart reviews
V finds himself away from Night City and dealing with a whole new environment where there's aliens, politics, and whole new planets. How will the former Corporate rat turned netrunning solo react to this? Will the galaxy notice this new individual, or will he fade as a Mr. Nobody?
Crossover - Mass Effect & Cyberpunk 2077 - Rated: M - English - Sci-Fi/Adventure - Chapters: 13 - Words: 22,662 - Reviews: 63 - Favs: 314 - Follows: 457 - Updated: 7/15 - Published: 1/20/2021 - OC, V, Johnny Silverhand
The Serpent's Venom by Lighting wolf knight reviews
All Alpha Legion warbands were different... And insanely weird... They are no different. Rated T for violence, profanity, and death. Doesn't entirely follow lore. Focusing more on Alpha Legion's infiltration and planning abilities and uncertain allegiances to chaos and the imperium and chaos... No OP Chaos Marines.
Crossover - Warhammer & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 2 - Words: 2,931 - Reviews: 1 - Favs: 8 - Follows: 17 - Updated: 7/14 - Published: 7/8 - Chaos Space Marines, OC, Admiral Hackett, Illusive Man
Paracausal Effect by Aquilarion reviews
After discovering what Light and Dark truly were— after finding Balance in their universe, Elsie Bray discovers a secret to the Guardian that forces him to act. Forces them both to act. The Darkness moves once again. Only this time, not in their universe. [FemShep] [M for safety]
Crossover - Mass Effect & Destiny - Rated: M - English - Adventure/Sci-Fi - Chapters: 7 - Words: 31,014 - Reviews: 17 - Favs: 78 - Follows: 123 - Updated: 7/13 - Published: 3/12 - [Exo Stranger, Guardian] Liara T'Soni, Shepard
A Bar at the End by n7kairos reviews
Two soldiers at the end of their wars meet at a bar. Just not the ones they were expecting.
Crossover - Call of Duty & Mass Effect - Rated: T - English - Angst/Sci-Fi - Chapters: 1 - Words: 822 - Reviews: 2 - Favs: 4 - Follows: 8 - Published: 7/12 - Cpt. John Price, Garrus V., Shepard - Complete
Rise of the Federation Alliance: Federation-Citadel War by SimplyLaggy reviews
( AU) A Citadel Council patrol fleet stumbles upon a Starfleet exploratory fleet who just discovered a mass relay, and fires on it, sparking a war on levels beyond the Citadel's imaginations! Meanwhile, Reapers detect these newcomers, and with their superiority complex, attack early! Meanwhile, Q sits on a beach chair munching popcorn, watching, and laughing!
Crossover - StarTrek: The Next Generation & Mass Effect - Rated: T - English - Chapters: 4 - Words: 8,143 - Reviews: 41 - Favs: 161 - Follows: 230 - Updated: 7/11 - Published: 2/21 - J. Picard, Admiral Hackett, Shepard
Mass effect: the Sovereign crisis 1 by micelzod reviews
After discovering a cache of prothean technology on Mars in 2090, humanity is spreading to the stars; the newest interstellar species is struggling to carve out its place in the great galactic community. But no one ever asks, What happened to the Prothean? It's up to a brave few to uncover a dark truth while stopping a rogue agent from carrying out his unknown master's plan.
Crossover - Mass Effect & EndWar - Rated: M - English - Sci-Fi/Adventure - Chapters: 1 - Words: 7,481 - Reviews: 1 - Favs: 9 - Follows: 9 - Published: 7/10 - [Ashley W., OC] 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: 38 - Words: 260,949 - Reviews: 1092 - Favs: 1,402 - Follows: 1,726 - Updated: 7/10 - Published: 5/29/2019
The Return of Hope by Masso 2010 reviews
Commander Shepard is dead. Knowing that they needed someone to complete his work fighting against the Reapers, The Illusive Man set his sights on the next best thing, Humanities greatest hero. The only problem is that Superman gave up on hero work a long time ago but can the threat of galactic extinction be enough for him to once again step into the light.
Crossover - Superman & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 28 - Words: 232,467 - Reviews: 316 - Favs: 687 - Follows: 796 - Updated: 7/10 - Published: 7/10/2020 - Clark K./Kal-El/Superman, Miranda L.
Hero From A Distant Galaxy by fitoxi reviews
'Returner':This Quirk sent Izuku to another world, only to return him to Quirk world aferwards, retaining all the powers he had obtained.Unfortunately, no one will believe him if he tries to reveal the origin of his others Quirks,'Biotics/Omnitool' and much less will they believe the tale that he was the greatest hero of an entire galaxy[Izuku OOC/Initially,Vigilant/only2 Romances]
Crossover - Mass Effect & My Hero Academia/僕のヒーローアカデミア - Rated: T - English - Adventure/Romance - Chapters: 7 - Words: 86,230 - Reviews: 39 - Favs: 260 - Follows: 320 - Updated: 7/9 - Published: 3/3/2022 - [Liara T'Soni, Himiko Toga, Izuku M., Mei H.]
The Sins of our Fathers by MarkerMagnum reviews
Unknown to the Citadel Council, the Human-Covenant war nears its vicious end. Miranda Keyes is seconds too slow. Delta Halo fires, leaving UNSC space as a lifeless snapshot in time. The Citadel must morn the loss of a civilization they never knew.
Crossover - Halo & Mass Effect - Rated: T - English - Drama/Sci-Fi - Chapters: 8 - Words: 70,555 - Reviews: 315 - Favs: 961 - Follows: 1,334 - Updated: 7/9 - Published: 2/11 - Cortana, Councilor Valern, Councilor Tevos, Councilor Sparatus
Cursed by Hookshot25 reviews
Clayton Carmine has only known hate and carnage for so many years. But once he survives the war he hoped to die in, things get strange. When people need help he isn’t one to shy away, and while helping Baird he gets sent to a place in dire need of a man like him. A man that can’t be claimed by death as easily as his kin.
Crossover - Gears of War & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 5 - Words: 48,632 - Reviews: 6 - Favs: 41 - Follows: 64 - Updated: 7/9 - Published: 4/10 - C. Carmine, Samantha B./Sam, Shepard, Tali'Zorah
Things the United Nations is Banned from doing (The List!) by vmoneywashere reviews
A new galactic power, the Solar United Nations, has taken a mantle alongside the Citadel Council. Two powerful forces acting in concert to form a stable, galactic community- Where did these space creatures come from? What do you mean the Humans Summoned spirits- No! Don't Adopt the Quarians! (One-shot, but can expand later).
Crossover - Mass Effect & Stellaris - Rated: T - English - Humor/Sci-Fi - Chapters: 4 - Words: 4,559 - Reviews: 9 - Favs: 78 - Follows: 100 - Updated: 7/7 - Published: 5/24 - Councilor Tevos, OC
Assassin's Creed: The Mass Effect by TomTheCat1 reviews
The Reaper War, 2186. Even in the face of complete annihilation, The Milky Way still suffers from infighting, some of which has been raging for thousands of years. As the last surviving member of the Assassin Brotherhood, Abigail has one chance to bring an end to the Templars, and to Cerberus.
Crossover - Mass Effect & Assassin's Creed - Rated: T - English - Romance/Adventure - Chapters: 28 - Words: 52,325 - Reviews: 9 - Favs: 62 - Follows: 78 - Updated: 7/3 - Published: 6/23/2019 - Shepard, Samantha T., Kai Leng, OC
War of the Old Ones by Ian the Mechanic reviews
In forgotten ages past, two near eldritch forces vied for the very life essence of the Galaxy. Unknown to the young races, that war is still ongoing. how can the UNSC, the Citadel Council or the Covenant hope to stand against such forces, when they are still embroiled in their own petty squabbling? How could they hope to survive the War of the Old Ones?
Crossover - Mass Effect & Halo - Rated: M - English - Sci-Fi/Horror - Chapters: 21 - Words: 113,263 - Reviews: 118 - Favs: 267 - Follows: 400 - Updated: 7/2 - Published: 2/21/2022
Beyond: A Mass Effect and Halo Story by yaknsneeze reviews
AU. 7 months after the events on the Citadel, Commander Shepard and an old ally return to fight an old enemy. Their new mission however, just got a lot more complicated. Post Mass Effect 3, and set in the Halo universe during the book Shadows of Reach.
Crossover - Halo & Mass Effect - Rated: M - English - Chapters: 3 - Words: 4,783 - Reviews: 3 - Favs: 12 - Follows: 22 - Updated: 7/2 - Published: 6/27 - Master Chief/John-117, Shepard
A Tale of Two Engineers: Redux by Inkytan reviews
A romantic action story involving Isaac Clarke (romanced with Tali'Zorah) After Isaac becomes somehow thrown into the universe of Mass Effect, he joins up Shepard's crew, experiencing crazy adventures and emotional moments with his new family and newfound love. Just, give it a read, you might like it. - This is an old high school fanfiction I'm rewriting. It's been 8 years lol
Crossover - Mass Effect & Dead Space - Rated: M - English - Romance/Sci-Fi - Chapters: 5 - Words: 44,491 - Reviews: 72 - Favs: 210 - Follows: 279 - Updated: 7/2 - Published: 8/22/2015
Effects of Man by Krotosin reviews
During the shitshow that Eden Prime was, Shepard finds a man buried near the beacon. With him, two AIs, one from Reach, the other from Typhon. With him at her side, Jane's mission is easier. If it wasn't for the fact he's a hyper-lethal killing machine. And a shy one at that. Mostly Titanfall and Halo, with some Deep Rock Galactic. First stab at writing, so keep that in mind.
Crossover - Mass Effect & Titanfall - Rated: M - English - Sci-Fi - Chapters: 2 - Words: 15,753 - Reviews: 6 - Favs: 35 - Follows: 52 - Updated: 6/28 - Published: 6/10
Héroe De Una Galaxia Distante by fitoxi reviews
'Retornador'; El Quirk que envio a Izuku a otro mundo, para luego regresarlo de vuelta, conservando todos los poderes que había ganado. Lamentablemente, nadie le creera si intenta revelar el origen de sus otros Quirks, 'Bioticos/Omniherramienta' y menos se creeran el cuento de que fue el más grande héroe de una galaxia. [Izuku OOC/Inicialmente, Vigilante/Harem ( Solo 2 parejas)]
Crossover - Mass Effect & My Hero Academia/僕のヒーローアカデミア - Rated: T - Spanish - Adventure/Romance - Chapters: 9 - Words: 84,654 - Reviews: 3 - Favs: 21 - Follows: 21 - Updated: 6/27 - Published: 3/3/2022 - [Liara T'Soni, Himiko Toga, Tali'Zorah, Izuku M.]
Mass Effect: Resurrection by RabidRabbids reviews
Shepard's life hadn't gotten any easier. Entire colonies were disappearing, millions of people gone. And that's not even mentioning she'd been dead for two years, but desperate times call for desperate measures, and Shepard is forced to work with Cerberus to find out what's behind the disappearances. Thankfully, she's got monsters backing her up. (Sequel to Monstrum Immortalem)
Crossover - Mass Effect & Guardians of the Galaxy - Rated: M - English - Sci-Fi/Adventure - Chapters: 25 - Words: 114,596 - Reviews: 7 - Favs: 20 - Follows: 25 - Updated: 6/26 - Published: 6/15/2021
Shadows and Dust by HistoricalHijinks reviews
Shattered, Reborn, Reforged, Remade. The gaze of the Pheonix Force, seeking purpose and understanding, falls upon the Reapers and their harvests. Disgusted by their perverted, farcical 'cycle', it decides to wipe their stain from the multiverse. Needing a perfect host, it waits tens of millennia until, as Hannah Shepard is miscarrying due to eezo radiation, it finds one in her womb
Crossover - X-Men & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 1 - Words: 4,405 - Reviews: 9 - Favs: 89 - Follows: 126 - Published: 6/25 - Ashley W., Liara T'Soni, Shepard
Stellar Effect Codex by Brandon Storm reviews
A Codex exploring the History and Lore of the Stellar Effect Universe
Crossover - Mass Effect & Stellaris - Rated: T - English - Sci-Fi - Chapters: 15 - Words: 34,063 - Reviews: 24 - Favs: 38 - Follows: 36 - Updated: 6/25 - Published: 8/7/2022
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