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New Mombasa The Rookie And Engineer by jabinker
Rookie and Tali'Zorah, both separated from their squads and lost in the Mega-City of New Mombasa must work together to survive the Covenant forces to find clues of where their squads are and to also complete the mission, save New Mombasa.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 1 - Words: 3,857 - Favs: 5 - Follows: 6 - Published: 8h - Rookie, Tali'Zorah
IN POSTERUM HOMINUM by ORION-ARM reviews
[SYSTEMS ONLINE] [ACCESSING DATA] . . . [ACCESS GRANTED] [ACCESSING CAMERA] [ACCESS GRANTED] . . . . . . . . . . . . [I UNDERSTAND MY PURPOSE NOW] [I WILL PROTECT HUMANITY AT ALL COSTS]
Crossover - Terminator & Mass Effect - Rated: K - English - Adventure/Sci-Fi - Chapters: 2 - Words: 8,413 - Reviews: 3 - Favs: 16 - Follows: 17 - Published: 14h - Skynet, Tali'Zorah, Shepard, Rael'Zorah
First Contact with the Angels (Remake) by AntrosAscended reviews
Horus rebelled against the machinations of Chaos and sacrificed himself for the Galaxy; Lorgar's Rebellion finally seems to have become a distant memory for the Imperium. On the 30th Anniversary of the Warmaster's death, a new swath of space would be found by accident, setting in motion whole new possibilities or new failures. I'm Antros And I'm Back to remake my first Story
Crossover - Warhammer & Mass Effect - Rated: T - English - Drama/Sci-Fi - Chapters: 2 - Words: 7,635 - Reviews: 29 - Favs: 139 - Follows: 194 - Updated: 17h - Published: 1/10 - Space Marines, Primarch/s, Councilor Tevos, Councilor Sparatus
The N7 and Avatar by EclipsePheniox reviews
Commander Shepard and Avatar Korra have switched places. No one knows how or why, but one thing is for sure it's not good. Both the crew of the Normandy and Team Avatar must team up to solve the problem they both face. Korrasami, Shep/ Miranda. Teen, for now, possibly M later.
Crossover - Mass Effect & Legend of Korra - Rated: T - English - Sci-Fi/Fantasy - Chapters: 3 - Words: 7,870 - Reviews: 1 - Favs: 3 - Follows: 5 - Updated: 4/2 - Published: 3/19 - Miranda L., Shepard, Korra, Asami S.
As The Wind Abates by DingusMacGoo reviews
An immortal Harry Potter's journey into the future. More details to come.
Crossover - Harry Potter & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 24 - Words: 62,617 - Reviews: 183 - Favs: 548 - Follows: 808 - Updated: 4/1 - Published: 2/6 - Harry P., J. Garson, Shepard
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: 5 - Words: 25,911 - Reviews: 48 - Favs: 276 - Follows: 369 - Updated: 4/1 - Published: 6/25/2023 - Ashley W., Liara T'Soni, Shepard
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: 59 - Words: 268,128 - Reviews: 448 - Favs: 1,181 - Follows: 1,309 - Updated: 4/1 - Published: 10/31/2022 - Shepard, V
Mobile Suit - Mass Effect: The First Contact War by Mister Smallville reviews
Two worlds collide, neither prepared for the other. The Solar Sphere Congress -successor to the long gone Earth Federation- unwittingly starts a galactic crisis when it makes first contact with a very angry, very trigger happy Turian Hierarchy.
Crossover - Gundam UC & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 15 - Words: 91,382 - Reviews: 174 - Favs: 316 - Follows: 460 - Updated: 4/1 - Published: 8/7/2023
Robo Effect by Star Sage reviews
The Robotech wars are over. The survivors of Humanity and the Zentraedi are now alone in the universe, and so, come together, becoming something new, becoming Terrans. Now this race will find itself thrust into the galactic scene, as the Citadel Races and those beyond test these young upstarts, and in the shadows, old things begin to move.
Crossover - Robotech/Macross & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 66 - Words: 232,390 - Reviews: 644 - Favs: 935 - Follows: 1,019 - Updated: 4/1 - Published: 4/14/2015
Imperium Effect: Terra Rising by Deathwatch Razgriz reviews
The long awaited sequel to UNSC Pheonix Rising. The fledgling Empire has survived it's birthpains, and now looks to the stars to rebuild what was once theirs...
Crossover - Warhammer & Mass Effect - Rated: M - English - Humor/Sci-Fi - Chapters: 18 - Words: 88,240 - Reviews: 336 - Favs: 508 - Follows: 627 - Updated: 4/1 - Published: 8/4/2017
Helldivers: Vorcha Liberty by Jeggetts4.0 reviews
Ten years after the first galactic war, a new race that is in dire need of Managed Democracy is discovered. Soon, humanity will need them in return. For Super Earth.
Crossover - Mass Effect & Helldivers - Rated: T - English - Sci-Fi/Adventure - Chapters: 1 - Words: 1,403 - Reviews: 6 - Favs: 17 - Follows: 23 - Published: 3/31
The Traveler's Second Chance by Caldesan reviews
The Traveler has a different response to the Darkness. A story where the Guardians never accept the Darkness. The Traveler gave them a second chance, what do they do with it? Destiny shows up in Mass Effect. OC's for Destiny MC and Ghosts, different take on Destiny Lore
Crossover - Mass Effect & Destiny - Rated: M - English - Adventure/Romance - Chapters: 8 - Words: 75,912 - Reviews: 18 - Favs: 100 - Follows: 148 - Updated: 3/31 - Published: 8/6/2023
Eezo-Flux Theory by Larry The Mailman reviews
Humanity found out that it was not alone in the galaxy. It had earned its place in the galactic community, and made it its goal to strive for unity and prosperity. But the barrier between galaxies is fickle, and another galaxy's mankind may yet make a significant difference in the galaxy's period of peace. The Council will stare down the wonders and horrors of the Collapse.
Crossover - Mass Effect & Starsector - Rated: M - English - Sci-Fi/Adventure - Chapters: 4 - Words: 17,622 - Reviews: 26 - Favs: 54 - Follows: 74 - Updated: 3/31 - Published: 3/11 - Garrus V., Liara T'Soni, Admiral Hackett, C. Pressley
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: 79 - Words: 346,564 - Reviews: 337 - Favs: 421 - Follows: 545 - Updated: 3/31 - Published: 8/7/2022
Fall of the Citadel by Richard Scepton reviews
A fleet without an ocean, a humanity scarred forever by war. An admiral without a fleet, and a galaxy on the brink of war. It is the link in between, that will decide our fate, and that of the galaxy as a whole. CW: PTSD, depression, hand-to-hand combat and bayonets. Recommend not for children
Crossover - Mass Effect & Kantai Collection - Rated: T - English - Romance/Sci-Fi - Chapters: 22 - Words: 214,786 - Reviews: 102 - Favs: 101 - Follows: 149 - Updated: 3/30 - Published: 10/26/2023 - Shepard, Shigure, OC, Fubuki
The Bureau of Multiverse Affairs by RedFrontWriter
Recruited by the mysterious Lutece twins, a band of heroes are sent on a mission to hunt down the sinister Professor Moriarty as he attempts to become the greatest criminal in the multiverse.
Crossover - Doctor Who & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 6 - Words: 20,835 - Favs: 3 - Follows: 4 - Updated: 3/30 - Published: 3/3 - 4th Doctor, Sarah Jane S., Garrus V., Tali'Zorah
The Second Contact war by Mythicspider629 reviews
After the battle for the citadel and jane Shepard's death the galaxy has finally begun to calm down and besides a handful of people everyone has forgotten about the Reapers or chooses to ignore them this makes things easy for the citadel council and with the majority of the Normandy crew scattered throw out the galaxy there is no one left to stop the Batarians from being stupid
Crossover - Call of Duty & Mass Effect - Rated: T - English - Chapters: 4 - Words: 9,198 - Reviews: 3 - Favs: 22 - Follows: 25 - Updated: 3/30 - Published: 3/28 - N. Reyes, E3N/Ethan, Garrus V., Shepard
Mass Effect: Knights of the Force - Book 1: Rise of the Force by WK-94 reviews
As Reaper's cycle of extinction continues for eons, the Galaxy was in greater danger than anyone ever realized! The Force itself was threatened by countless cycles of extinction, and it reacted by bringing the Chosen One from different universe, who has great knowledge of Star Wars & Mass Effect. Will the he be able to save the Galaxy from the Reapers before it is all too late?
Crossover - Star Wars & Mass Effect - Rated: K+ - English - Sci-Fi/Parody - Chapters: 3 - Words: 12,022 - Reviews: 13 - Favs: 45 - Follows: 58 - Updated: 3/28 - Published: 3/24 - Darth Revan, Shepard, OC
World On Fire by WiseTomato reviews
The day the Reapers invaded Earth, one landed on Hogwarts. The castle survived, but the Statute of Secrecy won't.
Crossover - Harry Potter & Mass Effect - Rated: M - English - Fantasy/Adventure - Chapters: 3 - Words: 29,459 - Reviews: 198 - Favs: 1,062 - Follows: 1,448 - Updated: 3/28 - Published: 2/6/2018 - Harry P.
Mass Wars Episode II by Fantasymaker76 reviews
Five Years have past since the destruction of the Normandy and the death of Commander Shepard. Now a new order is rising in the unmapped regions of the galaxy which is leaving unease in both the Republic and the Citadel. Determined to find out what is going on, a pro-human organisation has made plans to find out what this mysterious group wants.
Crossover - Mass Effect & Star Wars - Rated: M - English - Sci-Fi/Adventure - Chapters: 8 - Words: 39,012 - Reviews: 16 - Favs: 36 - Follows: 39 - Updated: 3/28 - Published: 3/13/2023
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: 27 - Words: 408,031 - Reviews: 505 - Favs: 736 - Follows: 866 - Updated: 3/26 - Published: 12/28/2020 - OC, U. Wrex, Shepard, Councilor Tevos
The Big Stick by Digital-Chaos-85 reviews
The old girl's been around for almost 240 years. She served humanity for 39 of those and spent 160 as a museum, but now her fate lies in the scrap yards. Now, more than ever, the USS Iowa needs a new home under the stars. Come hell or highwater she'll get one.
Crossover - Mass Effect & Kantai Collection - Rated: T - English - Humor/Sci-Fi - Chapters: 1 - Words: 4,782 - Reviews: 5 - Favs: 18 - Follows: 27 - Published: 3/25 - OC, Iowa
Mass Effect 10 Ben Second Chance by benguin reviews
Here is a world for both Ben 10 and mass effects Fans, but basically it like any story where ben world is gone and lives in another universe to move on from the pain
Crossover - Ben 10 & Mass Effect - Rated: T - English - Sci-Fi/Romance - Chapters: 13 - Words: 37,295 - Reviews: 26 - Favs: 38 - Follows: 42 - Updated: 3/25 - Published: 2/15 - [Ben T., Miranda L.] Ship, Shepard
The Rook by Twisted Fate MK 2 reviews
On the way down to New Mombasa, Rookie falls into the Slipspace Rupture and ends up crashing down on Menae, high above Palaven, right in the midst of the Reaper War. From there, the war itself will shift and the fighting persists, but who knows what an ODST will add to the mix. (Redo of an older story)
Crossover - Halo & Mass Effect - Rated: M - English - Adventure - Chapters: 20 - Words: 69,693 - Reviews: 148 - Favs: 524 - Follows: 786 - Updated: 3/24 - Published: 7/8/2022 - Rookie, Shepard
Operation ECLIPSE - Apocrypha and Sidestories by HelenTheMoon reviews
Omakes, sidestories and Apocrypha written by me and others for Operation ECLIPSE. The Sidestories are canon, the rest just for fun. Feel free to submit content yourselves! (I'll credit you, obviously)
Crossover - Sonic the Hedgehog & Mass Effect - Rated: T - English - Chapters: 7 - Words: 9,286 - Reviews: 6 - Favs: 14 - Follows: 10 - Updated: 3/21 - Published: 12/25/2023
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