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Anthem Effect by DragonKnight374 reviews
What if more than the world of Coda was isolated in space time? What will the freelancers do when they realize there’s more to the universe than their little planet, and how will the citadel react, to the Anthem of Creation?
Crossover - Mass Effect & Anthem - Rated: M - English - Sci-Fi/Adventure - Chapters: 15 - Words: 76,702 - Reviews: 68 - Favs: 302 - Follows: 364 - Updated: 3/14 - Published: 8/8/2022
Mass Effect demi humans by EclipsePheniox reviews
Long ago on earth demi-humans appeared on earth. Now expanding into the galaxy the other races have to deal with both humans and demi-humans. Mass effect story from beginning to end but with monster people to make it more interesting. Experimental, possible harem
Crossover - Mass Effect & Monster Girl Encyclopedia - Rated: M - English - Adventure/Sci-Fi - Chapters: 45 - Words: 153,211 - Reviews: 63 - Favs: 285 - Follows: 304 - Updated: 3/12 - Published: 8/2/2019
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: 22 - Words: 59,245 - Reviews: 162 - Favs: 455 - Follows: 672 - Updated: 3/11 - Published: 2/6 - Harry P., J. Garson, Shepard
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: 12 - Words: 32,244 - Reviews: 24 - Favs: 30 - Follows: 33 - Updated: 3/11 - Published: 2/15 - [Ben T., Miranda L.] Ship, Shepard
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: 1 - Words: 3,832 - Reviews: 5 - Favs: 24 - Follows: 36 - Published: 3/11 - Garrus V., Liara T'Soni, Admiral Hackett, C. Pressley
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: 56 - Words: 256,273 - Reviews: 402 - Favs: 1,156 - Follows: 1,285 - Updated: 3/11 - Published: 10/31/2022 - Shepard, V
Temporal Displacement with Gamer Characteristics by Keywielder reviews
As if shifting between the real world and Elite-verse when I had just graduated from Senior High for a few months wasn't enough, now they're telling me that it was a goddamned Beta THE WHOLE TIME, after FIVE FUCKING YEARS of God knows what in the actual fuck and ONLY NOW I get the full release! Fuck it. Let's just roll with this crap... Gamer, OC, SI. Current World: Mass Effect.
Crossover - Mass Effect & Elite Dangerous - Rated: M - English - Sci-Fi - Chapters: 7 - Words: 73,051 - Reviews: 66 - Favs: 341 - Follows: 423 - Updated: 3/10 - Published: 11/20/2021
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: 76 - Words: 333,862 - Reviews: 323 - Favs: 415 - Follows: 537 - Updated: 3/10 - Published: 8/7/2022
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: 3 - Words: 10,174 - Favs: 2 - Follows: 3 - Updated: 3/10 - Published: 3/3 - 4th Doctor, Sarah Jane S., Garrus V., Tali'Zorah
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: 19 - Words: 187,859 - Reviews: 94 - Favs: 97 - Follows: 147 - Updated: 3/9 - Published: 10/26/2023 - Shepard, Shigure, OC, Fubuki
Spirit Unto Dawn by free man writer reviews
Spartan's found only to be lost. A ship filled with humans in a galaxy not their own. The Spirit of Fire finds itself with new allies in a galaxy they are unfamiliar with, dealing with its own set of problems and apocalyptic enemies. Co-created and written with BulletStormX. UNDERGOING REWRITE AND REVAMP
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 14 - Words: 120,419 - Reviews: 769 - Favs: 1,767 - Follows: 2,229 - Updated: 3/8 - Published: 4/16/2020 - Master Chief/John-117, SPARTAN-B312/Noble Six, Tali'Zorah, Shepard
Operation ECLIPSE by HelenTheMoon reviews
Pre-ME1 post-Frontiers Xover, in which the Sonic version of Earth replaces ME Earth. A Batarian planet suddenly turns invisible, and things only get weirder from there. That poor STG agent won't know what hit him, that's for sure. And neither will the rest of the galaxy - once Sonic and Eggman get there. Crossposted on Spacebattles and AO3. Rating may change.
Crossover - Sonic the Hedgehog & Mass Effect - Rated: T - English - Sci-Fi/Fantasy - Chapters: 6 - Words: 62,746 - Reviews: 23 - Favs: 57 - Follows: 76 - Updated: 3/6 - Published: 11/26/2023 - Sonic, Tails, OC
Enthrallment Colors by undead3 reviews
Prince of the rogue human state, the Britannian Empire, Lelouch stumbles into grander conspiracies as he makes a bid for position within the Empire. Meanwhile Hana Shepard has been flung head first into a race against a renegade Spectre with the fate of all life in the balance. Are these two rising stars saviors, or destined to burn the galaxy in the flames of war?
Crossover - Code Geass & Mass Effect - Rated: M - English - Drama/Sci-Fi - Chapters: 16 - Words: 86,640 - Reviews: 49 - Favs: 51 - Follows: 62 - Updated: 3/5 - Published: 1/8 - Lelouch L., Kallen S., Shepard, Garrus V.
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: 17 - Words: 254,012 - Reviews: 562 - Favs: 1,128 - Follows: 1,536 - Updated: 3/5 - Published: 4/30/2020
Opposing Effect by ego023
Adrian Shephard went through hell on black mesa. Now he finds himself in a different future and galaxy. Now he is ready to complete his task.
Crossover - Half-Life & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 1 - Words: 613 - Favs: 5 - Follows: 6 - Published: 3/4 - A. Shephard, OC, Shepard
Bellum Terranum by F35B reviews
Humanity has long since recovered from the effects of the Human-Covenant War, beginning to resettle and rebuild. The Quarians, with help from the Council, have also begun to rebuild their fallen civilization, settling pre-approved Council planets finally settling after surviving the Morning Wars. One pirate attack on a Quarian Colony however will alter the course of history...
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 3 - Words: 23,006 - Reviews: 191 - Favs: 450 - Follows: 713 - Updated: 3/4 - Published: 7/31/2023
RWBY Effect 2: Rebirth by Owriush reviews
A year and a half has gone by, since the attack on the Citadel. Team RWBY and the crew of the Normandy suffer a tragedy. Ending in the loss of many lives. Awakened now a few years later. The girls of team RWBY, Elizabeth Shepard and their new allies must fight against a threat. One even more dangerous then the last. This is their Rebirth into a new world of wonders and insanity.
Crossover - Mass Effect & RWBY - Rated: T - English - Adventure/Romance - Chapters: 4 - Words: 66,224 - Reviews: 7 - Favs: 35 - Follows: 38 - Updated: 3/4 - Published: 8/10/2022
Audax Novus by A-01 reviews
A bold new world - A strange new reality - Fresh trials, tribulations, allies, and enemies. John fell through the portal from the Mantles Approach, but his luck works in mysterious ways. Now stranded in an alternate reality, how will he strive forward? The galaxy takes a sharp turn from the world we know, and the Reaper threat looms just as large, but no longer so uncontested.
Crossover - Halo & Mass Effect - Rated: M - English - Adventure/Romance - Chapters: 26 - Words: 656,439 - Reviews: 807 - Favs: 1,770 - Follows: 2,177 - Updated: 3/2 - Published: 9/4/2020 - [Master Chief/John-117, Miranda L.] [Shepard, Tali'Zorah]
New Start Plus: in spaaaaace! by omaster43 reviews
Nick Walters and his merry band of misfits are back with a story about helping Shepard and crew fight giant eldritch robot abominations, most likely through Dumb magic and crazy shenanigans This is a continuation of my previous story, so reading that one first is recommended. but I'm not your nanny you wanna be confused that's your choice. Oc-insert, just came from Dragon age
Crossover - Game X-overs & Mass Effect - Rated: M - English - Humor/Adventure - Chapters: 10 - Words: 254,829 - Reviews: 117 - Favs: 305 - Follows: 374 - Updated: 3/2 - Published: 6/6/2023 - Garrus V., Tali'Zorah, Shepard
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: 29 - Words: 55,332 - Reviews: 9 - Favs: 68 - Follows: 83 - Updated: 3/2 - Published: 6/23/2019 - Shepard, Samantha T., Kai Leng, OC
Noble Reborn (Timeline of Events) by TheJSmooth reviews
This is a timeline of events that intertwines the universes of Halo and several other fandoms, the biggest being Mass Effect. Changes here and there have altered the final script in the Infinite Journey of the Master Chief as well as his equal Noble Six. Dare to take a peek inside...
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 5 - Words: 14,250 - Reviews: 1 - Favs: 13 - Follows: 14 - Published: 3/2 - Complete
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: 14 - Words: 86,680 - Reviews: 164 - Favs: 304 - Follows: 443 - Updated: 3/1 - Published: 8/7/2023
The Galaxy's last shinobi by Kfbanime87 reviews
As for summary. His planet and people were gone. Destroyed by the reapers. But he survived. Now thousands of years in the future, Naruto must navigate a galaxy unfamiliar to him along with his ragtag crew of friends. All while he makes a name for himself and makes plans to destroy the reapers when they return
Crossover - Naruto & Mass Effect - Rated: M - English - Adventure/Humor - Chapters: 5 - Words: 47,069 - Reviews: 315 - Favs: 724 - Follows: 782 - Updated: 3/1 - Published: 3/27/2023 - Naruto U., Shepard
Massive Reckoning: Interstellar Assualt by vmoneywashere reviews
In the 2700s, the Milky Way is flourishing. Access to Forerunner ruins has allowed the races of the galaxy to explore their home and new galaxies. Now, a new fleet, lead by an Ancient Punic Class Fleet Carrier, is moving to explore a new galaxy. Soon enough, the UNSC will find itself embroiled in a new Great War, with a few standing in the way of mass extinction. (slow updates)
Crossover - Halo & Mass Effect - Rated: K+ - English - Sci-Fi - Chapters: 3 - Words: 25,036 - Reviews: 35 - Favs: 188 - Follows: 270 - Updated: 3/1 - Published: 10/9/2023 - P. Cole, OC, Admiral Hackett, Shepard
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: 65 - Words: 230,336 - Reviews: 642 - Favs: 927 - Follows: 1,010 - Updated: 3/1 - Published: 4/14/2015
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