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Mass Effect: Reaper T8 by ArcherEdgeBond
A Reaper threat and three different Sheppards. how will the universe handle this. follow Geoff, John, and Jane Shepard as they fight the reapers for survival and fight a new threat soon to take hold.(this was a challenge given to me by my friend the unforgivenone19901. if you have not checked out his work please do) (Disclaimer: I do not own the rights, this is purely fanmade)
Crossover - Terminator & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 10 - Words: 27,911 - Favs: 10 - Follows: 10 - Updated: 4h - Published: 2/25/2020
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: 19 - Words: 101,858 - Favs: 16 - Follows: 11 - Updated: 5h - Published: 8/17/2022 - Thrawn, OC, Ezra B., Shepard
The Wayfarer by Umbral Choir reviews
In the twilight of the universe, the Ihan-rii, a forgotten sect of Protoss travel to another reality to escape the hounds of the void. Xiltar, the last member of the umbral choir will guide his people into this world, only to find that he traded one war of annihilation for another.
Crossover - StarCraft & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 20 - Words: 41,194 - Reviews: 24 - Favs: 44 - Follows: 60 - Updated: 5h - Published: 2/5
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: 70,301 - Reviews: 62 - Favs: 233 - Follows: 284 - Updated: 8h - 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: 39 - Words: 136,196 - Reviews: 50 - Favs: 251 - Follows: 258 - Updated: 8h - Published: 8/2/2019
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. Crossposted by myself, Jabber the very wocky on Ao3.
Crossover - Halo & Mass Effect - Rated: T - English - Drama/Sci-Fi - Chapters: 4 - Words: 29,995 - Reviews: 106 - Favs: 310 - Follows: 458 - Updated: 14h - Published: 2/11 - Master Chief/John-117, Miranda K., Cortana
False Masks: Spectre by Mandalorian Runescaper reviews
A Mass Effect/SWTOR crossover. The sequel to False Masks, picking up two years after the first instalment. In a galaxy weakened by the horror that was the Reaper War, a new threat will arise. Our heroes won't be able to stop it alone this time. Human OC/quarian OC pairing and Male Shepard/Kasumi Goto pairing. Feedback is much appreciated! Original title: False Masks: Shadows
Crossover - Star Wars & Mass Effect - Rated: M - English - Sci-Fi/Romance - Chapters: 36 - Words: 195,954 - Reviews: 81 - Favs: 87 - Follows: 126 - Updated: 3/6 - Published: 9/30/2018 - [OC, OC] [Shepard, Kasumi G.]
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: 15 - Words: 80,116 - Reviews: 108 - Favs: 488 - Follows: 574 - Updated: 3/6 - Published: 10/31/2022 - Shepard, V
A New Opposing Force by Arentanji reviews
Adrian Shepard has escaped the G-man's prison that was an osprey in the void by going through the portal that the G-man used to leave the osprey. Elite combine 3650 was taken here with Wilson also. They find themselves on Eden Prime, hours before the attack close to the spaceport. Rated T, for now. This is a Passion Project, meaning an uploading schedule is almost nonexistent.
Crossover - Half-Life & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 3 - Words: 1,759 - Reviews: 3 - Favs: 9 - Follows: 15 - Updated: 3/6 - Published: 10/23/2022 - A. Shephard, The Combine, Tali'Zorah, Shepard
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: 17 - Words: 89,915 - Reviews: 100 - Favs: 206 - Follows: 302 - Updated: 3/6 - Published: 2/21/2022
Garden of Conquest by SirBearington reviews
Being a planet can be quite challenging especially when they live in the most hostile environment known to man. Everything could technically end them. From other planets, wandering stars or even black holes. There's a never ending list of things that could ruin their day. At least they have tentacles to protect themselves. What do you mean planets aren't supposed to have tentacle?
Crossover - Cartoon X-overs & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 4 - Words: 6,571 - Reviews: 4 - Favs: 25 - Follows: 33 - Updated: 3/5 - Published: 3/1
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: 28 - Words: 334,199 - Reviews: 636 - Favs: 470 - Follows: 581 - Updated: 3/5 - Published: 4/22/2022 - Imperial Guard, Space Marines, Adeptus Mechanicus, Shepard - Complete
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: 11 - Words: 25,561 - Reviews: 19 - Favs: 32 - Follows: 28 - Updated: 3/5 - Published: 8/7/2022
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: 31 - Words: 137,665 - Reviews: 166 - Favs: 250 - Follows: 356 - Updated: 3/5 - Published: 8/7/2022
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: 19 - Words: 289,385 - Reviews: 292 - Favs: 554 - Follows: 686 - Updated: 3/4 - Published: 12/28/2020 - OC, U. Wrex, Shepard, Councilor Tevos
The Ruby of Cerberus by Scrambleman17 reviews
1 week before classes start again, team RWBY watched a report relaying to a strange light at Vale's industrial district, what they didn't know is that it would lead them to another dimension quite different from their own, and unwillingly trap themselves in this strange dimension. contains liberties with canon from both franchises and inevitable OCs.
Crossover - Mass Effect & RWBY - Rated: M - English - Sci-Fi/Adventure - Chapters: 19 - Words: 84,386 - Reviews: 39 - Favs: 76 - Follows: 98 - Updated: 3/3 - Published: 9/7/2021 - Miranda L., OC, Team RWBY
Adventures of Captain Jason and Agronauts by johny woodpecker
While Shepard does his thing, captain Jason and his friends travel the galaxy from alternate perspective. Crossover with lots of stuff, but mostly TF2
Crossover - X-overs & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 7 - Words: 6,783 - Updated: 3/3 - Published: 10/14/2022
Destiny Lost by Twisted Fate MK 2 reviews
The Gods left remnant together, with the statement they would never return to it or influence it. Only, that wasn't true, was it? The God of light, ever the hypocrite and liar, didn't abandon Remnant. Instead, he reincarnated someone to do his bidding and bring Remnant to them. Cue, the now dead Pyrrha Nikos and the God of Darkness' ideas. / Supporter Requested by Espacole & Spork
Crossover - Mass Effect & RWBY - Rated: M - English - Adventure - Chapters: 65 - Words: 269,119 - Reviews: 710 - Favs: 717 - Follows: 996 - Updated: 3/3 - Published: 5/5/2019 - Legion, Pyrrha N., Penny P., God of Darkness
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: 3 - Words: 27,735 - Reviews: 41 - Favs: 160 - Follows: 204 - Updated: 3/3 - Published: 8/22/2015
Spider-Effect by pyrohelixdrago reviews
Strange needed to do more than make people forget about Peter Parker...he needed there to be no Peter Parker at all, with no other options and with some help from outside forces Strange sends Peter somewhere, he can reach his true potential as a hero and an Avenger.
Crossover - Spider-Man & Mass Effect - Rated: M - English - Chapters: 3 - Words: 53,639 - Reviews: 58 - Favs: 240 - Follows: 266 - Updated: 3/2 - Published: 7/30/2022 - Peter P./Spider-Man
Sufficiently Advanced Percussive Maintenance by WiseTomato reviews
Thor landed head first in the Presidium, and then the Geth attacked. It was an improvement on his day so far.
Crossover - Mass Effect & Thor - Rated: T - English - Sci-Fi/Adventure - Chapters: 2 - Words: 12,362 - Reviews: 54 - Favs: 358 - Follows: 397 - Updated: 3/1 - Published: 3/22/2022
Mortal Desperations by Solthrin reviews
Arcturus Magnus, Sagittarum of the Legio Custodes, has fought for years within the webway and the Impossible City. Upon taking a near-fatal wound, the Emperor Himself removes Arcturus from the front, sending him instead to bring forth reinforcements from the Mechanicum. When something goes wrong during the return, where does this Custodian find himself?
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 3 - Words: 15,989 - Reviews: 41 - Favs: 165 - Follows: 256 - Updated: 2/28 - Published: 1/17 - Adeptus Mechanicus, Tali'Zorah, Shepard
The Terran Effect 2: Beneath the Sea by TimeTraveller-1900 reviews
An unexpected discovery with no leads stuns the Seaview crew.
Crossover - Voyage to the Bottom of the Sea & Mass Effect - Rated: K - English - Sci-Fi - Chapters: 1 - Words: 1,504 - Reviews: 2 - Favs: 11 - Follows: 13 - Published: 2/28
Boundaries Displaced by Hirowolfgang reviews
When a dormant Mass Effect is activated by Battarian pirates, it is affected by a mysterious phenomenon that displaces the Dreikruz en route to their final confrontation with the Quaestors. Now stranded Mitsuba and the Dreikruz have to put differences aside in order to work together with the Normandy SR-2 against the Collectors and the following Reaper war. For better or worse.
Crossover - Mass Effect & Super Robot Wars - Rated: M - English - Sci-Fi/Drama - Chapters: 3 - Words: 11,522 - Reviews: 1 - Favs: 8 - Follows: 8 - Published: 2/28 - Garrus V., Shepard
Mass Effect-Batman: Crisis On The Citadel by James Keller reviews
After 2 years of operating on Omega, The Dark Knight comes to the Citadel in pursuit of a dangerous new drug that is about to be unleashed upon the very heart of Council Space. This will put him into an alliance with Lt. Garrus Vakarian of C-Sec's Major Crimes Unit as they uncover a massive Conspiracy.
Crossover - Mass Effect & Batman - Rated: M - English - Crime/Mystery - Chapters: 5 - Words: 33,400 - Reviews: 9 - Favs: 31 - Follows: 33 - Updated: 2/27 - Published: 10/29/2021 - Bruce W./Batman, Garrus V., Liara T'Soni, Tali'Zorah
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