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Those Who Favor Fire by The.A.I.1502 reviews
In a universe reeling from the Blip, Isabelle Collins is shattered by her brother's death. But humanity's intent on colonizing the stars reveals an undeniable truth - Thanos was the harbinger of something much worse. Isabelle must peel back the layers of her new reality, because this time, the stakes are much higher than half of all life.
Crossover - Marvel & Mass Effect - Rated: M - English - Sci-Fi/Fantasy - Chapters: 25 - Words: 223,027 - Reviews: 17 - Favs: 50 - Follows: 64 - Updated: 2h - Published: 6/1/2020 - OC, P. Coulson, Harbinger, Shepard
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: 8 - Words: 21,362 - Reviews: 70 - Favs: 202 - Follows: 266 - Updated: 1/5 - Published: 5/29/2022 - J. Keyes, J. Cutter, SPARTAN-B312/Noble Six, Jerome-092
United Earths Empire Rewrite 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: M - English - Adventure/Fantasy - Chapters: 1 - Words: 8,225 - Reviews: 3 - Favs: 51 - Follows: 68 - Published: 1/5
NieR: Ghosts of a bygone Era by The meme lord of the east reviews
After the fall of the Tower, androids are finally united and ready to explore space in search of friendly species, what they found was a galactic community of aliens with deeply rooted hatred for AI. Will the galactic community make an exception for the Androids? or will they indulge in petty wars while another threat looms on the horizon? Citadel vs Reapers vs Humans.
Crossover - Mass Effect & Nier - Rated: T - English - Sci-Fi/Supernatural - Chapters: 3 - Words: 14,685 - Reviews: 15 - Favs: 66 - Follows: 100 - Updated: 1/5 - Published: 10/16/2022 - 2B, 9S, YoRHa Commander
My Mass Effect Acadamia by Astraea755
A crossover bringing all the characters you know and love from my hero acadamia and putting them into the roles of several mass effect characters. We follow Izuku Midoriya as he awakens again from yet another death at the hands of the reapers. This time he swears it will be different. This will be updated periodically, i write out the chapters after recording gameplay to use.
Crossover - My Hero Academia/僕のヒーローアカデミア & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 1 - Words: 3,156 - Follows: 3 - Published: 1/4 - Izuku M., Mina A., Ochako U., Tenya I.
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: 39 - Words: 291,863 - Reviews: 34 - Favs: 190 - Follows: 242 - Updated: 1/4 - Published: 1/5/2022 - Lone Wanderer, Courier, OC
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: 7 - Words: 46,890 - Reviews: 139 - Favs: 407 - Follows: 536 - Updated: 1/3 - Published: 12/3/2022 - D. Anderson, Admiral Hackett, Rael'Zorah, OC
Mass Effect: Into Darkness by Lara Jayd reviews
When Revan is thrown into Citadel space by a phenomenon she has never encountered before, she must join Shepard in her fight against the Reapers in order to save both of their galaxies.
Crossover - Star Wars & Mass Effect - Rated: M - English - Adventure/Romance - Chapters: 17 - Words: 71,194 - Reviews: 51 - Favs: 192 - Follows: 294 - Updated: 1/3 - Published: 6/14/2020 - Revan, Carth O., Garrus V., Shepard
Kerberos by timedraven117 reviews
Commissioned: The Green Flu struck earth like a meteor, in its clutches billions died, and a new world emerged. Now it is the year 2156 and that which has been dreaded by humanity ever since the truth of the Green Flu has come to pass. First Contact.
Crossover - Mass Effect & Left 4 Dead - Rated: M - English - Sci-Fi - Chapters: 6 - Words: 33,764 - Reviews: 16 - Favs: 110 - Follows: 172 - Updated: 1/3 - Published: 4/23/2021 - Illusive Man, Shepard
Ark effect Remake by EclipsePheniox reviews
After the attack on the Collector base failed, the Normandy SR-2 found themselves on Ark a planet roaming with primordial beasts. But as their Commander returns, things become more complex as they learn about Ark and the reason they are there and the purpose of the world.
Crossover - Mass Effect & ARK: Survival Evolved - Rated: T - English - Adventure/Sci-Fi - Chapters: 1 - Words: 7,379 - Reviews: 2 - Favs: 13 - Follows: 23 - Published: 1/3 - Liara T'Soni, Miranda L., Shepard
I'll Always Find You by Scififan33 reviews
Sora T'Soni just wanted to keep her family safe, to put her skills to use for her people, so she joined the military. Riku Yamada was running from a past he wished he could forget, grateful to those who saved him, so he joined the Alliance military. The Saren and Sovereign attacked and both their lives changed forever. Something drew them together but how could it work?
Crossover - Kingdom Hearts & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 11 - Words: 53,124 - Reviews: 8 - Favs: 21 - Follows: 20 - Updated: 1/2 - Published: 6/30/2022 - [Riku, Sora] [Liara T'Soni, Shepard]
A Metal Guardian by JawsOnYou67 reviews
The Universal Century, only a few short years ago humanity nearly eradicated itself to the tune of a madman, now it spreads, free of most of its old hatred. Yet the galaxy won't let them rest. Terminal prepares the twin Queens as best it can. (Gundam x Mass Effect)
Crossover - Gundam UC & Mass Effect - Rated: T - English - Sci-Fi/Humor - Chapters: 19 - Words: 97,089 - Reviews: 117 - Favs: 311 - Follows: 383 - Updated: 1/2 - Published: 8/18/2020 - Amuro R., Char A., Tali'Zorah, Admiral Hackett
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: 8 - Words: 41,584 - Reviews: 59 - Favs: 332 - Follows: 379 - Updated: 1/2 - 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: 91 - Favs: 173 - Follows: 255 - Updated: 1/2 - Published: 2/21/2022
Mass Effect Kills Halo by giblo126 reviews
I was frustrated and wanted to get something out.
Crossover - Halo & Mass Effect - Rated: K+ - English - Chapters: 1 - Words: 495 - Reviews: 14 - Favs: 1 - Follows: 2 - Published: 1/1
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: 225,584 - Reviews: 458 - Favs: 409 - Follows: 525 - Updated: 1/1 - 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: 1/1 - 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: 127 - Favs: 177 - Follows: 218 - 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: 128 - Favs: 211 - Follows: 307 - Updated: 1/1 - Published: 8/7/2022
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: 536 - Follows: 646 - 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: 186 - Favs: 338 - Follows: 396 - 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: 9 - Favs: 43 - Follows: 77 - 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: 129 - Favs: 490 - Follows: 747 - Updated: 12/28/2022 - Published: 12/26/2021 - OC, Tali'Zorah, Admiral Hackett, Rael'Zorah
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