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Enduring the Flames of War by Masterdude21 reviews
A joint Asari-Turian operation salvaged a "package" from a derelict wreckage in the Terminus Systems, whereupon they release a force of war beyond their reckoning. Hoping to avoid another war, Commander Shepard recruits the "package" into her team. A simple act of kindness, unwittingly paving the way for a clash unlike the galaxy has ever seen. Fate directs the flames of war.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Horror - Chapters: 44 - Words: 628,893 - Reviews: 2266 - Favs: 3,470 - Follows: 4,245 - Updated: 4/4 - Published: 11/30/2015 - Master Chief/John-117, OC, Shepard
The Return of Hope by Masso 2010 reviews
Commander Shepard is dead. Knowing that they needed someone to complete his work fighting against the Reapers, The Illusive Man set his sights on the next best thing, Humanities greatest hero. The only problem is that Superman gave up on hero work a long time ago but can the threat of galactic extinction be enough for him to once again step into the light.
Crossover - Superman & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 12 - Words: 93,143 - Reviews: 176 - Favs: 415 - Follows: 483 - Updated: 4/2 - Published: 7/10/2020 - Clark K./Kal-El/Superman, Miranda L.
Half Life: Entanglement by ThePilotArchangel reviews
Ayita Shephard, Lambda Resistance; Cato'Zorah nar Rayya, hired Quarian of the Council Funded Relay 314 Expedition. Both dissatisfied with their lot in this universe; one under the heel of a Inter-Universal Empire, and the other under the boot of an Apathetic Galactic Council. Together they will change the Galaxy. (Image not Owned, Co-Written with IantheMechanic, First Contact AU)
Crossover - Half-Life & Mass Effect - Rated: T - English - Sci-Fi/Family - Chapters: 34 - Words: 285,971 - Reviews: 28 - Favs: 80 - Follows: 112 - Updated: 4/2 - Published: 6/30/2020 - [Shepard, OC] Garrus V., Tali'Zorah
Effect of a seal by Fanreader26 reviews
it was placed on him when he was born and he was never informed about it. but one day on the training field, he overloaded a seal that kept a secret from everyone in the village including himself. now that the seal is broken, he finds more about his ancestry and a new power that goes beyond his village. Gender bender (consider a one-shot, don't know if it will become more.)
Crossover - Naruto & Mass Effect - Rated: T - English - Drama/Sci-Fi - Chapters: 1 - Words: 3,263 - Reviews: 11 - Favs: 27 - Follows: 32 - Published: 4/1 - Naruto U., Hiruzen S.
Reckoning of the Reclaimers (v2) by metts101 reviews
After the Great War Humanity was a different creature. Their brush with extinction left them cold and vengeful, and so they sought revenge for the transgressions of the Covenant species. With their eradication Humanity, driven by xenophobia, took their position as the unrivalled power in the galaxy. However, will a xenophilic alien federation, in a new galaxy, change their outlook?
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 2 - Words: 14,933 - Reviews: 37 - Favs: 224 - Follows: 326 - Updated: 4/1 - Published: 9/24/2021
A god among men by tdy4234 reviews
Harry has had a hell of a life, he has survived by playing the cards he is dealt. What happens when he hits his breaking point and starts using anything he can get his hands on to win? What happens when magic deals him a new hand? He pimp slaps Mass effect into submission taking shit from no one. Badass!Harry harem!Harry AU!
Crossover - Harry Potter & Mass Effect - Rated: T - English - Romance/Adventure - Chapters: 10 - Words: 18,372 - Reviews: 221 - Favs: 1,046 - Follows: 1,422 - Updated: 3/31 - Published: 1/16/2017 - Harry P., Liara T'Soni, Tali'Zorah, Aria T'Loak
Mass Effect Interconnected by N7Reny
Tot Rithad obudził się na kontrolowanej przez Lewiatana stacji Mahavid. Uzbrojony jest w niecodzienną umiejętność, która pozwala mu wykradanie technologii i magii z znanych mu fikcyjnych światów. Technologia istniejąca tylko w marzeniach salarian, moce miażdżące biotykę asari i armia silniejsza niż wszystko cerberus i turianie mogą wykrzesać. To wystarczy na walkę ze żniwiarzami?
Crossover - X-overs & Mass Effect - Rated: M - Polish - Adventure/Romance - Chapters: 1 - Words: 2,241 - Published: 3/30 - Jack, Sovereign, Shepard, OC
Dead On Arrival: ML Short Story by TacoWrath
When the crew of the UCV Prosecutor, a Confederation destroyer, come across a floating alien derelict with a strange connection to humanity, they find something onboard that thrusts them into a fight for their lives. Based on Mass Effect: Murphy's Law, recommend you read it first for lore, technical details.
Crossover - Mass Effect & Dead Space - Rated: M - English - Sci-Fi/Horror - Chapters: 3 - Words: 17,433 - Favs: 9 - Follows: 17 - Updated: 3/29 - Published: 2/16
Ripples in the Stream by Vyrexuviel reviews
Eden Prime was a disaster, but from the ashes of a hero's pyre rises a new hope. A very different warrior rises to take the place of a fallen legend. Time to quit dreaming. Time to Awaken. ME Universe, Out-of-universe character with D&D roots; some Shadowrun influence. (Will update erratically, please be patient!) Co-Authored by MasterMind4892! Book One Complete!
Crossover - Mass Effect & Dungeons and Dragons - Rated: M - English - Adventure/Sci-Fi - Chapters: 34 - Words: 419,818 - Reviews: 46 - Favs: 201 - Follows: 280 - Updated: 3/29 - Published: 5/1/2015 - [Jack, OC] Liara T'Soni, Kasumi G.
The Rise of the Enclave by 6-4 pilot reviews
Stuck in a more peaceful galaxy, the Tau of the Farsight Enclave must still prepare themselves for war against the forces that conspire to destroy it. But as they fight for their existence, elements from their old home come to strengthen their power in said old home.
Crossover - Warhammer & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 15 - Words: 86,856 - Reviews: 82 - Favs: 259 - Follows: 303 - Updated: 3/28 - Published: 4/20/2020 - Chaos Space Marines, Tau, Legion, Shepard
StellarEffect: The Imperial Chronicles by Jack Smith1 reviews
The Empire is in a time of Peace and prosperity, After Crown Princess Sarah Led the Fremas Offensive during the Fremas Rebellion where Imperial Forces clashed with Traitors and Renegade Elements of Imperial Society, Only for the Empire to finally Emerge Triumphant, But a new threat emerges and a Whole new galaxy is now aware of them, Irene Protects, Let no one be found wanting.
Crossover - Mass Effect & Stellaris - Rated: M - English - Sci-Fi/Drama - Chapters: 5 - Words: 16,283 - Reviews: 11 - Favs: 57 - Follows: 66 - Updated: 3/28 - Published: 1/16 - [Shepard, Ashley W.] Admiral Hackett, OC
Force, Intent, Effect by WayfinderRed reviews
StarWarsAU: Palpatine is successfully killed and the Empire never rises. Mass effectAU: mostly scaling fixes to make the story work better. A Republic Unknown Regions exploration fleet discovers a strange object in deep space while investigating the disappearance of a colony fleet. Meanwhile the Alliance prepares to launch the Normandy on it's first mission. M for language/in case
Crossover - Star Wars & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 5 - Words: 50,501 - Reviews: 46 - Favs: 145 - Follows: 191 - Updated: 3/26 - Published: 4/10/2021 - OC, Shepard
Primal Beings, New Horizons by Trico216 reviews
Lustria is destroyed, the lizardmen departed for the stars. Finding an ancient gateway, what will the children of the Old Ones find on the other side?
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi/Fantasy - Chapters: 3 - Words: 6,036 - Reviews: 21 - Favs: 50 - Follows: 64 - Updated: 3/25 - Published: 3/11 - Lizardmen
Lunar Incident by Konradoziom reviews
After the discovery of the Prothean ruins in 2128, the nations of the world formed the System Alliance as a military alliance against the alien threat. However, in 2137, the Lunar Incident threatened to fragment the alliance. However, a new discovery could spur the entire history of mankind. The game for mankind's survival has begun.
Crossover - Mass Effect & Touhou Project - Rated: K+ - English - Mystery/Sci-Fi - Chapters: 6 - Words: 20,339 - Reviews: 9 - Favs: 33 - Follows: 44 - Updated: 3/25 - Published: 3/21
Dead Effect by EndlessExplorer
Can Shepard and Miranda help Isaac and Ellie stop a Necromorph Outbreak?
Crossover - Mass Effect & Dead Space - Rated: M - English - Horror/Friendship - Chapters: 1 - Words: 2,062 - Follows: 2 - Published: 3/24 - Miranda L., Shepard, Isaac C., Ellie L.
RWBY Effect by Owriush reviews
The Breach has been dealt with and team RWBY needs a break, but not before they are sent to stop a sudden Grimm gathering. Now they seem to have ended up in a different world with its own humans living along side various alien species. Join Shepard and her crew along with team RWBY as they fight to stop a darkness from rising. P.S WhiteRose and BumbleBee paring plus FemShepXTali
Crossover - Mass Effect & RWBY - Rated: T - English - Adventure/Romance - Chapters: 43 - Words: 692,194 - Reviews: 125 - Favs: 321 - Follows: 324 - Updated: 3/24 - Published: 9/16/2015
The Book of Wrex: A Walking Dead Story by Boobymitch reviews
Taking place 5 years after the event of Mass Effect 3, Wrex discovers a mysterious device on Tuchanka that sends him to a different universe! Wrex now must have to work together with other humans to survive in this world as it is plummeting in it's own world of chaos.
Crossover - Mass Effect & Walking Dead - Rated: T - English - Horror/Fantasy - Chapters: 4 - Words: 10,418 - Reviews: 3 - Favs: 10 - Follows: 17 - Updated: 3/24 - Published: 3/14 - U. Wrex, Lee E., Clementine
Iron Effect by Akashic Silhouette reviews
A unique Iron Warrior Sorcerer finds himself within Mass Effect, in this new reality, there is no chaos to twist the hearts and minds of weak men. Jane Shepard, the Butcher of Torfan, a woman of iron heart, soul, and mind, she needs to be if she intends to save the galaxy from the Reapers, it is a cause she will do almost anything for. No deed is too cruel, no sacrifice is too much
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 2 - Words: 8,627 - Reviews: 14 - Favs: 46 - Follows: 68 - Updated: 3/22 - Published: 2/28 - Chaos Space Marines, Shepard
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: 1 - Words: 10,136 - Reviews: 20 - Favs: 150 - Follows: 187 - Published: 3/22
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: 14 - Words: 66,974 - Reviews: 28 - Favs: 59 - Follows: 86 - Updated: 3/21 - Published: 9/7/2021 - Miranda L., OC, Team RWBY
The Reclamation by Fade Maybe reviews
Through ONI's manipulation, the UNSC stumbles upon a Mass Relay and is dragged into a new war. They'll discover the battered races of the Citadel, the political intrigue of its factions, and a second group of humans governed by the Systems Alliance, divided by Cerberus, and lead by Commander Shepard. Yet no one can stop what is to come: the Reclamation, and the death of the galaxy.
Crossover - Halo & Mass Effect - Rated: T - English - Drama/Suspense - Chapters: 54 - Words: 407,389 - Reviews: 1630 - Favs: 1,710 - Follows: 2,124 - Updated: 3/21 - Published: 3/13/2013
Mass Dragon Effect I: Shadows of the Past by raw666 reviews
After humanity discovered dilithium crystals and later the darkspawn, technology began to drastically change for the Mass Effect Universe. From space exploration to an alliance that rivals the Council, the galaxy has entered into a new golden era. Will it be enough for John and Jane Shepard to stop the cycle of extinction, or will Saren succeed in bringing back the Reapers?
Crossover - Mass Effect & Dragon Age - Rated: M - English - Drama/Sci-Fi - Chapters: 8 - Words: 96,745 - Reviews: 25 - Favs: 92 - Follows: 111 - Updated: 3/20 - Published: 12/24/2020 - [Shepard, Liara T'Soni] [Garrus V., Tali'Zorah]
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: 8 - Words: 63,539 - Reviews: 27 - Favs: 90 - Follows: 122 - Updated: 3/20 - Published: 6/19/2021 - [Shepard, Liara T'Soni] [OC, Tali'Zorah]
The Last Shinobi by XlikeX14 reviews
The numbers of shinobi drastically decreased over the past generations till near extinction. People stopped using chakra as their source of power and focused on developing a modern society with the help of technology until they've achieved space-flight and the Reapers harvested their civilization... except one. Follow the ninja way of the last living shinobi Akane Uchiha.
Crossover - Naruto & Mass Effect - Rated: M - English - Tragedy/Mystery - Chapters: 35 - Words: 148,710 - Reviews: 48 - Favs: 137 - Follows: 186 - Updated: 3/20 - Published: 7/4/2019 - OC, Shepard
I'm Nobody by free man writer reviews
He didn't have anything when he was born. Just a name and number. But over time, what he had grew. He, with his friends began to understand that there was more to their existence then just their name and number. They will prove that they were meant to be real. To exist. To become something more than just a Nobody. Co-written and created with Jebest4781. Fem Shepard. Now on Ao3.
Crossover - Kingdom Hearts & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 37 - Words: 664,684 - Reviews: 491 - Favs: 453 - Follows: 475 - Updated: 3/20 - Published: 9/13/2020 - Axel, Roxas, Xion, Shepard
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