Mass Effect Crossovers
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Mass Effect: The Gears of War by IX404 reviews
Marcus thought he was done fighting after the death of Queen Myrrah, and the activation of the Imulsion Countermeasure. When he goes to help Baird investigate an abandoned COG facility, he will soon discover that while he ended one fight, another one has just begun.
Crossover - Gears of War & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 31 - Words: 173,255 - Reviews: 219 - Favs: 216 - Follows: 248 - Updated: 8/16 - Published: 3/31 - Marcus F., A. Cole, Garrus V., Shepard
Mass Effect Terran Effect by The Grandiose Library reviews
Work In Progress
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 1 - Words: 695 - Reviews: 3 - Favs: 21 - Follows: 25 - Published: 8/16
Mass Avengers Effect by JungleFurious reviews
It's been thirty years since Thanos, since the endgame battle between his forces and the Avengers. Now the majority of the Avengers have retired, but the mantles have been filled by their children, now full-grown adults. When a portal sends a few of the Avengers to a new universe, things are going to get hectic. The world of Mass Effect will never be the same.
Crossover - Mass Effect & Avengers - Rated: M - English - Sci-Fi/Adventure - Chapters: 9 - Words: 71,949 - Reviews: 31 - Favs: 100 - Follows: 137 - Updated: 8/15 - Published: 6/19/2021 - [Shepard, Liara T'Soni] [OC, Tali'Zorah]
Command effect: Rise of the three powers by aris1606 reviews
Anyone wondering what would happen after the events of the Uprising? There are a lot of possibilities. Time machines, Yuriko Omega on the loose, desolators, giga fortresses and a lot of other stuff. It's gonna be a crazy ride.
Crossover - Mass Effect & Command & Conquer - Rated: M - English - Adventure/Sci-Fi - Chapters: 32 - Words: 113,908 - Reviews: 76 - Favs: 141 - Follows: 212 - Updated: 8/15 - Published: 10/16/2019 - Shepard
Whitley Shepard: The Commander's Brother by Hadrian Kallig reviews
Whitley Schnee couldn't take it anymore. The soul crushing loneliness was too much for the boy, and he ended up taking his life. However, in a twist of fate, an amnesiac Whitley ends up being found by Hannah Shepard. Years later, as a fresh faced engineering graduate, Whitley Shepard decides to join his sister's mission to hunt down Saren.
Crossover - Mass Effect & RWBY - Rated: M - English - Romance/Family - Chapters: 17 - Words: 36,813 - Reviews: 119 - Favs: 295 - Follows: 345 - Updated: 8/14 - Published: 4/20/2021 - [Garrus V., Shepard] [Whitley S., Tali'Zorah]
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: 5 - Words: 26,980 - Reviews: 6 - Favs: 13 - Follows: 14 - Updated: 8/14 - Published: 6/30 - [Riku, Sora] [Liara T'Soni, Shepard]
Of Shepards and Imperials by Mandrake109 reviews
One of the oldest living perpetuals along with the remains of an inquisitorial retinue are transported into an alternative past where aliens are not simply foes to slay but friends and allies to mankind. For the perpetual it's a nice change of pace for the others? Well they may learn that co-existence might not be such a bad thing after all... Rated M for obvious reasons.
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi/Fantasy - Chapters: 8 - Words: 92,484 - Reviews: 66 - Favs: 184 - Follows: 258 - Updated: 8/13 - Published: 3/7/2019 - Imperial Guard, OC, Shepard
Unknown events have unmeasurable answers by Watsi reviews
When someone contacts the Quarians about old machinery, they should think twice before engaging with a strange yet so familiar species, a war, and circumstances that will shock two galaxies now that the rift is open.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Drama - Chapters: 15 - Words: 126,144 - Reviews: 269 - Favs: 362 - Follows: 548 - Updated: 8/13 - Published: 4/21 - [Master Chief/John-117, Tali'Zorah] J. Cutter
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: 15 - Words: 61,824 - Reviews: 47 - Favs: 175 - Follows: 270 - Updated: 8/12 - Published: 6/14/2020 - Revan, Carth O., Garrus V., Shepard
The Final Horizon by Touhoufanatic reviews
Taking a different route of technology, humanity ascends to the stars upon Sails of light with hearts full of hope and adventure. the second Age of Exploration has truly begun, and nothing, not aliens, ancient space squids, or genocidal robots will stop humanity, and perhaps its greatest legend of the seas, from finding the Horizon once more! Rated T for now.
Crossover - Pirates of the Caribbean & Mass Effect - Rated: T - English - Adventure - Chapters: 2 - Words: 4,701 - Reviews: 25 - Favs: 157 - Follows: 220 - Updated: 8/12 - Published: 7/31 - Capt. Jack Sparrow
Star-Bound by The Incredible Muffin reviews
Some destinies are written out centuries, or even millennia, ahead of time. However, when destiny is derailed, new plans have to be implemented. Sometimes, that involves ripping someone away from the peaceful end they seek and thrusting them into a tide of never-ending war in order to fix what can never be repaired.
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi/Supernatural - Chapters: 36 - Words: 245,454 - Reviews: 1034 - Favs: 1,258 - Follows: 1,548 - Updated: 8/11 - Published: 5/29/2019
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: 1 - Words: 1,595 - Reviews: 17 - Favs: 41 - Follows: 30 - Published: 8/11 - Imperial Guard, Space Marines, Admiral Hackett - Complete
Clone Effect: Rebels by Twistedstitcher27 reviews
The Republic has fallen and given rise to The Empire. With everything they fought for destroyed, there's little left to hope for. But as soldiers who have pledged their lives to protecting the innocent, evil will not stand unopposed.
Crossover - Star Wars: The Clone Wars & Mass Effect - Rated: M - English - Adventure/Romance - Chapters: 3 - Words: 9,223 - Reviews: 4 - Favs: 11 - Follows: 17 - Updated: 8/10 - Published: 7/31 - [Captain Rex, Shepard] James V., Jack
A few Titans Solves Many Issues, Including the Reapers by vmoneywashere reviews
In a distant yet expansive corner of the galaxy, many races rose and fell without anyone noticing. Yet a collection survived their ordeals and now look outwards. They bring Ideals, Peace, Prosperity, all under the UNSA and its Custodianship. When the Quarian Migrant fleet encounters an Expedition fleet, the nomads find a new home and a new family. (more updates in the winters) HFY
Crossover - Mass Effect & Stellaris - Rated: T - English - Sci-Fi/Family - Chapters: 16 - Words: 70,415 - Reviews: 168 - Favs: 493 - Follows: 725 - Updated: 8/10 - Published: 11/16/2021 - [Tali'Zorah, Shepard] Rael'Zorah, OC
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: 1 - Words: 28,458 - Reviews: 2 - Favs: 13 - Follows: 14 - Published: 8/10
The Prelude of War by Indigard reviews
A very different Mass Effect galaxy encounters a strange and relentless invader that is on constant hunger for Biomass but they never know it's just a glimpse of what coming for them. Featuring: alternative history for every species, a bigger and more populated galaxy, cunning Asari, militarized and germanized human empire.
Crossover - Warhammer & Mass Effect - Rated: T - English - Chapters: 5 - Words: 91,678 - Reviews: 16 - Favs: 52 - Follows: 55 - Updated: 8/10 - Published: 11/6/2021 - Imperial Guard, Tyranids, OC, Shepard
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: 2 - Words: 42,769 - Reviews: 38 - Favs: 164 - Follows: 171 - Updated: 8/8 - Published: 7/30 - Peter P./Spider-Man
Were it So Easy by Sigma0327 reviews
Six's life was a giant war. Every battle was a test of sheer tenacity and stubbornness against insurmountable odds. Every moment, every bullet fired, every Covenant, Insurrectionist, and Flood spore killed has led up to his last fight. Once again he was one of the few that stood between Earth and her enemies. This would be his final battle, and nothing could change that, right?
Crossover - Halo & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 6 - Words: 59,419 - Reviews: 101 - Favs: 583 - Follows: 838 - Updated: 8/6 - Published: 11/9/2020 - SPARTAN-B312/Noble Six, Tali'Zorah, Miranda L., Shepard
Mass Effect:Titans by Chronos0305 reviews
Giants of all kinds in outer space. The citadel and the entire galaxy is forever changed
Crossover - Mass Effect & X-overs - Rated: T - English - Sci-Fi - Chapters: 3 - Words: 2,728 - Reviews: 6 - Favs: 31 - Follows: 29 - Updated: 8/6 - Published: 3/16 - Complete
Saga of the Bridgers-Year 5 by Ganel750 reviews
The Death Star has been destroyed. While the Coalition celebrates, Ezra and Jaral return to Lothal, to spend some time with their family and introduce Luke to the ways of the Jedi. But the Empire is far from broken, as Grand Admiral Tanis and his fleet are already preparing to avenge the death of so many of their comrades.
Crossover - Mass Effect & Star Wars Rebels - Rated: K+ - English - Sci-Fi/Adventure - Chapters: 33 - Words: 169,512 - Reviews: 9 - Favs: 23 - Follows: 17 - Updated: 8/5 - Published: 2/2 - [Ezra B., Sabine W.] Stromtroopers, OC - Complete
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: 3 - Words: 11,089 - Reviews: 30 - Favs: 160 - Follows: 249 - Updated: 8/5 - Published: 7/8 - Rookie, Shepard
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: 33 - Words: 113,228 - Reviews: 42 - Favs: 231 - Follows: 233 - Updated: 8/5 - Published: 8/2/2019
Fashionable Tactics by Lighting wolf knight
He didn't know what else was coming, only that this could have been decided now. Rated T for violence, death, and profanity.
Crossover - Mass Effect & RWBY - Rated: T - English - Romance/Adventure - Chapters: 1 - Words: 806 - Favs: 3 - Follows: 4 - Published: 8/4 - [OC, Coco A.] Primarch Adrien Victus
The Long, Long Walk by This Is Sarcasm reviews
Crow is stuck, but it's not all bad news; he's been offered shelter on the Normandy, and Spider can't hurt them here. Shepard now has an unkillable paracausal warrior, and his 'not-an-AI', Glint, is a complete cinnamon roll, but it's not all good news; he's half-starved, in culture shock, and has a bad case of trust issues. He might need work, sure, but who on this ship doesn't?
Crossover - Mass Effect & Destiny - Rated: T - English - Sci-Fi/Angst - Chapters: 20 - Words: 65,587 - Reviews: 127 - Favs: 255 - Follows: 356 - Updated: 8/3 - Published: 9/15/2021 - Joker, Shepard, Dr. Chakwas, Crow
En otro contexto by magnolias5 reviews
La humanidad ha sido una extraña espina clavada en la mente de su vecino mas antiguo, una nación estelar de milenios con un fuerte sentido del deber, lamentablemente esos no son los Turianos, la Humanidad y la Ciudadela se encuentran en un periodo tumultuoso sin que ellos lo sepan del todo, pues, el Imperio T'au tiene como imperativo llevar el bien mayor a todos, lo quieran o no.
Crossover - Warhammer & Mass Effect - Rated: T - Spanish - Sci-Fi - Chapters: 2 - Words: 2,585 - Reviews: 3 - Follows: 3 - Updated: 8/3 - Published: 7/26
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