Mass Effect Crossovers
Filters
3.4K | Page 1 2 3 4 11 .. Last Next »

Never Fade Away by Ideas-Guy reviews
Lives are cheap and money is everything. That's how the orphanage made its money - lending out children for human expirementation. L is an old man at the age of fifteen and he knows he doesn't have much time left. All that mattered was getting out, but he soon learns that the world is a lot bigger than Night City. And that the galaxy is a lot bigger than Earth.
Crossover - Mass Effect & Cyberpunk 2077 - Rated: M - English - Adventure/Drama - Chapters: 7 - Words: 36,413 - Reviews: 53 - Favs: 310 - Follows: 350 - Updated: 12/12/2022 - Published: 10/31/2022 - Shepard, V
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: 15 - Words: 79,719 - Reviews: 87 - Favs: 163 - Follows: 242 - Updated: 1h - Published: 2/21/2022
Mass Effect Kills Halo by giblo126
I was frustrated and wanted to get something out.
Crossover - Halo & Mass Effect - Rated: K+ - English - Chapters: 1 - Words: 495 - Published: 9h
Technophiles and Militarists by thelordofdarkreunion reviews
The Reaper invasion is nigh. Outnumbered and outgunned, the Citadel must turn to two new, dangerous allies for salvation: the Adeptus Mechanicus and Imperium of Man.
Crossover - Warhammer & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 20 - Words: 225,585 - Reviews: 448 - Favs: 403 - Follows: 520 - Updated: 11h - Published: 4/22/2022 - Imperial Guard, Space Marines, Adeptus Mechanicus, Shepard
Saga of the Bridgers-Year 6 by Ganel750
A new Menace. As the war between the Coalition and the Empire enters a standstill, entire colonies at the edge of Wild Space start disappearing. When a new enemy will prove to be a threat to both sides in the conflict, enemies will have to join forces to prevent this new menace from conquering the galaxy.
Crossover - Star Wars & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 13 - Words: 67,773 - Favs: 14 - Follows: 10 - Updated: 20h - Published: 8/17/2022 - Thrawn, OC, Ezra B., Shepard
The third way by Konradoziom reviews
Mankind has finally united after a long time. To do this, it was necessary to discover the ruins of an ancient civilization and a wrecked spaceship. But the ship and the ruins have a completely different technology. Is it a gift from heaven that allows for enormous development in many directions, or is it a danger of their existence? Humanity will have to find out about it.
Crossover - Starblazers & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 26 - Words: 75,803 - Reviews: 124 - Favs: 177 - Follows: 217 - Updated: 1/1 - Published: 2/20/2021 - Alex W./M. Kodai, A. Avatar/J. Okita, Nihlus K.
Stellar Effect by Brandon Storm reviews
The Reapers trap was perfect in its design. Their execution refined over billions of years, their technology refined since the dawn of time itself. Right up until Someone Broke the Trap!
Crossover - Mass Effect & Stellaris - Rated: T - English - Adventure/Sci-Fi - Chapters: 22 - Words: 99,033 - Reviews: 127 - Favs: 209 - Follows: 303 - Updated: 1/1 - Published: 8/7/2022
Wasteland Galaxy by Redentor reviews
Matriarch Lantaya is a brave explorer from the Golden Age of Asari space exploration, and she wants to go home. The Lone Wanderer is a messianic cyborg from a world scorched in nuclear fire, and he wants to save the wastelands. Courier Six is a tribal postman who usurped control of an entire city state. He wants to eat people. Among other things. (Also available on Spacebattles)
Crossover - Fallout & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 38 - Words: 283,714 - Reviews: 33 - Favs: 186 - Follows: 238 - Updated: 12/31/2022 - Published: 1/5/2022 - Lone Wanderer, Courier, OC
The Final Olympian by TheSilverboar reviews
Percy Jackson. Alive since before humanity even reached Mars, wandering in solitude. But as Saren tries to destroy the galaxy he can't stand Idly by and returns to Alliance Space to help stop this new threat to his species. (Male Sheppard)
Crossover - Percy Jackson and the Olympians & Mass Effect - Rated: M - English - Sci-Fi/Friendship - Chapters: 5 - Words: 8,202 - Reviews: 39 - Favs: 522 - Follows: 631 - Updated: 12/31/2022 - Published: 11/6/2021 - Percy J., Ashley W., Tali'Zorah, Shepard
Mass Effect: Man of Steel by DarkAvenger001 reviews
What if the explosion of Krypton wasn't natural? What if Kal-El's escape pod didn't go to Earth? This is that story.
Crossover - Superman & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 20 - Words: 70,226 - Reviews: 184 - Favs: 334 - Follows: 392 - Updated: 12/30/2022 - Published: 6/2/2013
Depths of Space by Lighting wolf knight
A Jedi Relic takes The fledging New Republic and a student of Luke's to new depths of space. One with new friends and enemies. Rated T for violence, death, and profanity.
Crossover - Star Wars & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 2 - Words: 8,381 - Favs: 3 - Follows: 6 - Updated: 12/30/2022 - Published: 12/11/2022 - OC, Grand Moff A. Kaine, Liara T'Soni, Peebee S.
star wars the old republic naruto story by dragons 23 reviews
naruto was left on the steps of the jedi temple and is found by grand master and is the adopted by jedi knight satele shan and become a jedi padawan to master kassandra romance be lana beniko and jaesa and all so my oc kara lockwood
Crossover - Mass Effect & Star Wars - Rated: M - English - Sci-Fi/Romance - Chapters: 5 - Words: 6,144 - Reviews: 1 - Favs: 2 - Follows: 3 - Updated: 12/29/2022 - Published: 10/16/2022 - HK-47, Nadia G., Lana Beniko, BD-1
Not in one's own plate by Sicht reviews
V was losing hope of returning to her life as she knew it. Time had become an unknown constant; had she been inside for a year? Maybe two? Either way, she felt anxious, worried. Her sacrifices couldn't have been all for naught. Right?
Crossover - Mass Effect & Cyberpunk 2077 - Rated: M - English - Mystery/Sci-Fi - Chapters: 3 - Words: 12,901 - Reviews: 8 - Favs: 40 - Follows: 72 - Updated: 12/28/2022 - Published: 9/8/2022 - V, OC
The Exiles:A New Power by Johnnieboy11 reviews
The beginning of the Battle For Earth signaled the start of the final, bloodiest campaign of the Human-Covenant War. Hastily, a plan is put into motion and an Ark Fleet, composed of a dozen Phoenix-class vessels and their escorts, makes the jump out of system. Either interference, or malfunction, causes their arrival to a new Galaxy, where new threats lurk just around the corner.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 6 - Words: 22,115 - Reviews: 127 - Favs: 479 - Follows: 726 - Updated: 12/28/2022 - Published: 12/26/2021 - OC, Tali'Zorah, Admiral Hackett, Rael'Zorah
Humanity Perpetuum by Slim Dustpan reviews
My earliest and most embarrasing published work, its not very good but by goddam will I not let it hold me back. It lives again! I shall do my very best to slavage this work! Or it may die again, who knows.
Crossover - Command & Conquer & Mass Effect - Rated: T - English - Sci-Fi/Humor - Chapters: 4 - Words: 4,324 - Reviews: 11 - Favs: 27 - Follows: 36 - Updated: 12/28/2022 - Published: 4/17/2018
Snack Bytes: Is There a Dream Effect by Wynnt'r reviews
They say a machine cannot dream, cannot feel, but what if. What if, there was someone that can make more than just AI. And there's only one person can bring a dream for synthetics, and that's her!
Crossover - Kamen Rider & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 1 - Words: 2,548 - Reviews: 4 - Favs: 6 - Follows: 4 - Published: 12/27/2022 - Shepard - Complete
Mass effect Fallout by norwi
A fan project of mine merging mass effect and Fallout (Plus ocs) into one universe
Crossover - Fallout & Mass Effect - Rated: T - English - Sci-Fi/Fantasy - Chapters: 2 - Words: 3,035 - Favs: 3 - Follows: 5 - Published: 12/26/2022 - Tali'Zorah, Benezia, OC
Mass effect: the Jaded ones by Ray SK reviews
A UNSC Human-covenant war-era battle group led by a Punic class supercarrier is introduced to a new galaxy. One where people are xenophilic, use to times of peace and harmony, and against disrupting the Status Quo. What will an extremely aggressive xenophobic and battle-hardened human faction add to the mix? and will their addition change the future of this galaxy. (No Spartans)
Crossover - Halo & Mass Effect - Rated: M - English - Adventure/Humor - Chapters: 5 - Words: 29,851 - Reviews: 68 - Favs: 155 - Follows: 232 - Updated: 12/25/2022 - Published: 2/6/2022 - E. Buck, OC
Maelstrom Effect Book 2: Shadows of Crimson by godospartan the Kitsune reviews
After Soverign's defeat, the sibling Commanders left to clean up the mess it left behind. But one of them was struck down by an unknown force. The next 2 years they go in search of the ones responsible, unknowing that a secret group is bringing their sibling back to life to fight the Reapers again. How will they react when they meet again? NaruxTali, Shakarian, Mature content later
Crossover - Naruto & Mass Effect - Rated: M - English - Sci-Fi/Hurt/Comfort - Chapters: 12 - Words: 141,870 - Reviews: 69 - Favs: 321 - Follows: 364 - Updated: 12/25/2022 - Published: 12/25/2019 - Naruto U., J. Garson, Garrus V., Tali'Zorah
A Galaxy of Inheritors and Usurpers by HaloZealotDemon reviews
The Separatists destroy the Covenant in a brutal war, yet in the 2570s persist in their efforts, though in a few years they will hopefully be history. It seems however The Gods have other plans. The Migrant fleet decides that they shall go through Relay 314 into unknown space and run into, as Captain Church said "Sleep-deprived Titans with negative zero fucks to give." AU
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Drama - Chapters: 1 - Words: 4,788 - Reviews: 13 - Favs: 80 - Follows: 117 - Published: 12/25/2022 - Arbiter, T. Hood, Tali'Zorah, Councilor Sparatus
Sith Effect Episode I: First Contact by Metagray reviews
The ruins of Mars belonged not to the protheans but to humanity's ancestors, the Sith Empire. How will the Citadel react to a race that not only doesn't use mass effect technology, but is an anathema to their ideals. When the turians find the Sith, they face a war unlike any this galaxy has seen. The First Contact War has begun. Peace is a lie, there is only passion.
Crossover - Star Wars & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 6 - Words: 37,521 - Reviews: 103 - Favs: 350 - Follows: 470 - Updated: 12/23/2022 - Published: 12/3/2022 - D. Anderson, Admiral Hackett, Rael'Zorah, OC
United Earths Empire: The Beginning of a New Age by Destarien reviews
What if three Universes once separate come together. three different humanities with three different paths of technology merge into one galaxy. Citadel space will never be the same because the Schahl Empire and UNSC are here. Two Civilizations, one at war and one ready for war.
Crossover - Halo & Mass Effect - Rated: T - English - Fantasy/Sci-Fi - Chapters: 7 - Words: 21,354 - Reviews: 69 - Favs: 212 - Follows: 278 - Updated: 12/23/2022 - Published: 5/29/2022 - J. Keyes, J. Cutter, SPARTAN-B312/Noble Six, Jerome-092
Things Alliance and Imperial Forces are No Longer Allowed to Do by thelordofdarkreunion reviews
As blending cultures and bored soldiers often goes, both the Alliance and Imperial militaries have gotten up to some very interesting hijinks. Admiral Hackett and the Commissariat have decided enough is enough, and posted these handy rules for their respective soldiers to follow.
Crossover - Warhammer & Mass Effect - Rated: K+ - English - Humor/Sci-Fi - Chapters: 2 - Words: 3,427 - Reviews: 35 - Favs: 88 - Follows: 64 - Updated: 12/23/2022 - Published: 8/11/2022 - Imperial Guard, Space Marines, Admiral Hackett - Complete
Glory to the Imperium! by V-rcingetorix reviews
Astartes Shepard has been assigned a new task: to escort strange alien civilians to a site within Imperium borders. The Emperor Renewed has issued a personal directive that preparations are to take place, an alien race seeks to destroy the peace achieved within the Imperium's holy borders. My first foray into the 40k 'verse, insight would be helpful.
Crossover - Warhammer & Mass Effect - Rated: T - English - Drama/Adventure - Chapters: 3 - Words: 28,961 - Reviews: 40 - Favs: 170 - Follows: 204 - Updated: 12/23/2022 - Published: 11/15/2021
StellarEffect: The Imperial Chronicles ((On hold)) by Jack Smith1 reviews
The Empire is in a time of Peace and prosperity, After Crown Princess Sarah Led the Fremas Offensive during the Fremas Rebellion where Imperial Forces clashed with Traitors and Renegade Elements of Imperial Society, Only for the Empire to finally Emerge Triumphant, But a new threat emerges and a Whole new galaxy is now aware of them, Irene Protects, Let no one be found wanting.
Crossover - Mass Effect & Stellaris - Rated: M - English - Sci-Fi/Drama - Chapters: 8 - Words: 24,797 - Reviews: 20 - Favs: 86 - Follows: 96 - Updated: 12/22/2022 - Published: 1/16/2022 - [Shepard, Ashley W.] Admiral Hackett, OC
3.4K | Page 1 2 3 4 11 .. Last Next »