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Sith Effect Episode I: First Contact by Metagray reviews
The ruins of Mars belonged not to the protheans but to humanity's ancestors, the Sith Empire. How will the Citadel react to a race that not only doesn't use mass effect technology, but is an anathema to their ideals. When the turians find the Sith, they face a war unlike any this galaxy has seen. The First Contact War has begun. Peace is a lie, there is only passion.
Crossover - Star Wars & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 15 - Words: 124,227 - Reviews: 528 - Favs: 1,361 - Follows: 1,790 - Updated: 3h - Published: 12/3/2022 - D. Anderson, Admiral Hackett, Rael'Zorah, OC
Feared Reverence by ayab reviews
376 years after the battle between heaven and earth. Two humans have achieved godhood. Using their power to guide humanity to the stars. How will the galaxy react to see a species so advanced yet so primitive? So powerful yet not wanting to use their power. They are what the citadel race aspires to be and hates because of their jealousy. (up for adoption.)
Crossover - Naruto & Mass Effect - Rated: T - English - Fantasy/Sci-Fi - Chapters: 5 - Words: 14,318 - Reviews: 48 - Favs: 178 - Follows: 247 - Updated: 8h - Published: 1/14
The Long, Long Walk by This Is Sarcasm reviews
Having stopped the Hive incursion on Eden Prime at the expense of being stuck in Commander Shepard's reality, Crow is offered a place on the Normandy. With nowhere to go, he accepts, and finds himself at the front of the fight against the Collectors, while at the same time trying to learn how to trust the ship's residents. In the end, though... maybe he's not 'stuck' after all.
Crossover - Mass Effect & Destiny - Rated: T - English - Sci-Fi/Angst - Chapters: 27 - Words: 90,505 - Reviews: 185 - Favs: 340 - Follows: 480 - Updated: 1/19 - Published: 9/15/2021 - Joker, Shepard, Dr. Chakwas, Crow
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: 1 - Words: 18,830 - Reviews: 21 - Favs: 125 - Follows: 147 - Published: 6/6 - Garrus V., Tali'Zorah, Shepard
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: 3 - Words: 27,845 - Reviews: 180 - Favs: 521 - Follows: 553 - Updated: 6/5 - Published: 3/27 - Naruto U., Shepard
Demigod Effect by MightyWarHammer
Descendant of Frank Zhang and Hazel Levesque named Marcus Zhang in. The year of 2183, and this is his story.
Crossover - Mass Effect & Percy Jackson and the Olympians - Rated: T - English - Sci-Fi - Chapters: 2 - Words: 3,590 - Favs: 3 - Follows: 2 - Published: 6/5 - OC, 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: 26 - Words: 130,342 - Reviews: 186 - Favs: 716 - Follows: 813 - Updated: 6/5 - Published: 10/31/2022 - Shepard, V
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: 19 - Words: 99,906 - Reviews: 110 - Favs: 246 - Follows: 367 - Updated: 5/1 - Published: 2/21/2022
The New Order by Germanspeaker reviews
The Emperor give Thrawn everything what he need to destroy the Rebellion in the near of Lothal, but as he moves from Kuat to Lothal he hits a hyperspace anomaly. What Thrawn will do when he arifes with the sevens fleet the terminus systems? Will he brings the imperial order to this new galaxy?
Crossover - Star Wars & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 10 - Words: 30,312 - Reviews: 55 - Favs: 186 - Follows: 262 - Updated: 6/4 - Published: 6/14/2022 - Thrawn
A Whole New World by Spartan III Commando reviews
Noble six's story did not end on Reach, he escaped the doomed planet after saving the Pillar of Autumn, and he and 117 fought across each Halo, until an incident sent him to a whole new world. And he is wholly unprepared for the journey in store.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 10 - Words: 40,311 - Reviews: 59 - Favs: 318 - Follows: 463 - Updated: 6/4 - Published: 7/7/2016 - SPARTAN-B312/Noble Six
Adversor Et Admorsus by PhoinexFire reviews
An ancient battle millennium old will soon begin again, forces of a dark order shall face an Empire of Light. Nations caught in the middle must choose and the future shall be shaped in the stars. Peace shall reign in the end, whether it comes in darkness or arises in light. One way or the other the darkness shall come and face the Terran Star Imperium. Sequel to Britannia Rising.
Crossover - Code Geass & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 11 - Words: 88,439 - Reviews: 161 - Favs: 451 - Follows: 607 - Updated: 6/4 - Published: 5/13/2020 - [Lelouch L., C.C.]
The Dream Effect by DarkPhoenixLady reviews
A rewrite of the original dream effect. Set hundreds of years after the Deep Dream series. Humanity has been slowly expanding across space, and has just encountered the citadel races. After a rocky start, the two groups start to co-exist. Then someone attacks Eden Prime and tries to remove the prothean beacon.
Crossover - Harry Potter & Mass Effect - Rated: T - English - Sci-Fi/Fantasy - Chapters: 22 - Words: 108,891 - Reviews: 7 - Favs: 31 - Follows: 42 - Updated: 6/4 - Published: 5/9 - Liara T'Soni, Tali'Zorah, Shepard
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: 44 - Words: 196,052 - Reviews: 194 - Favs: 300 - Follows: 416 - Updated: 6/4 - Published: 8/7/2022
The Exiles:A New Power by Johnnieboy11 reviews
The beginning of the Battle For Earth signaled the start of the final, bloodiest campaign of the Human-Covenant War. Hastily, a plan is put into motion and an Ark Fleet, composed of a dozen Phoenix-class vessels and their escorts, makes the jump out of system. Either interference, or malfunction, causes their arrival to a new Galaxy, where new threats lurk just around the corner.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 7 - Words: 25,155 - Reviews: 146 - Favs: 568 - Follows: 864 - Updated: 6/3 - Published: 12/26/2021 - OC, Tali'Zorah, Admiral Hackett, Rael'Zorah
Saga of the Bridgers-Year 6 by Ganel750 reviews
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: 29 - Words: 165,797 - Reviews: 6 - Favs: 23 - Follows: 18 - Updated: 6/3 - Published: 8/17/2022 - Thrawn, OC, Ezra B., Shepard
Paracausal Effect by Aquilarion reviews
After discovering what Light and Dark truly were— after finding Balance in their universe, Elsie Bray discovers a secret to the Guardian that forces him to act. Forces them both to act. The Darkness moves once again. Only this time, not in their universe. [FemShep] [M for safety]
Crossover - Mass Effect & Destiny - Rated: M - English - Adventure/Sci-Fi - Chapters: 3 - Words: 12,003 - Reviews: 12 - Favs: 53 - Follows: 92 - Updated: 6/3 - Published: 3/12 - Liara T'Soni, Shepard, OC, Exo Stranger
Maelstrom Effect Book 2: Shadows of Crimson by godospartan the Kitsune reviews
After Soverign's defeat, the sibling Commanders left to clean up the mess it left behind. But one of them was struck down by an unknown force. The next 2 years they go in search of the ones responsible, unknowing that a secret group is bringing their sibling back to life to fight the Reapers again. How will they react when they meet again? NaruxTali, Shakarian, Mature content later
Crossover - Naruto & Mass Effect - Rated: M - English - Sci-Fi/Hurt/Comfort - Chapters: 13 - Words: 155,959 - Reviews: 74 - Favs: 330 - Follows: 375 - Updated: 6/2 - Published: 12/25/2019 - Naruto U., J. Garson, Garrus V., Tali'Zorah
A New Effect by KingKaper reviews
The Galaxy is a dark and mysterious place, even for those who think they have it all figured out. Humans were sure that Pokemon were the strongest beings in this dimension, however Shepard and all living beings will be reeducated, there are dark places even Giratina fears. Cross-posted on AO3
Crossover - Pokémon & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 7 - Words: 22,353 - Reviews: 19 - Favs: 83 - Follows: 114 - Updated: 6/2 - Published: 3/16/2022 - Moon, Liara T'Soni, Shepard
A Warden Amongst Starry Skies by SophimusPrime reviews
What if, by chance, our esteemed Commander and her crew just so happened to unearth a strange, seemingly mundane mirror upon one of their many expeditions throughout the systems one day? Sure, at first it would have seemed like nothing. Just sat in the Shuttle Deck gathering dust for a while.. until a certain Hero just so happened to come tumbling out of it.
Crossover - Mass Effect & Dragon Age - Rated: M - English - Romance/Humor - Chapters: 5 - Words: 49,902 - Reviews: 2 - Favs: 14 - Follows: 18 - Updated: 6/2 - Published: 4/22 - Garrus V., The Warden
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: 37 - Words: 203,292 - Reviews: 81 - Favs: 94 - Follows: 133 - Updated: 6/1 - Published: 9/30/2018 - [OC, OC] [Shepard, Kasumi G.]
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: 74 - Words: 298,852 - Reviews: 774 - Favs: 758 - Follows: 1,039 - Updated: 6/1 - Published: 5/5/2019 - Legion, Pyrrha N., Penny P., God of Darkness
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: 14 - Words: 31,288 - Reviews: 22 - Favs: 36 - Follows: 32 - Updated: 5/31 - Published: 8/7/2022
The Stranger of Horizon by Soulless Reader reviews
A wanderer finds himself displaced in space and time to a colony under attack by vile aliens. Accompanied by a few survivors, he attempts to save who he can and strike back against the invaders. But why would he of all people end up there?
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 5 - Words: 38,609 - Reviews: 18 - Favs: 55 - Follows: 65 - Updated: 5/29 - Published: 5/25 - Complete
Descent of the Angels by IReadToLive99 reviews
From a war-torn galaxy to another at the edge of extinction. The Blood Angels, through mysterious providence, are here now. Absent of the guidance of the Primarch and the Emperor, duty and devotion will lead them on a path to safeguard humanity from the darkness that lurks amongst the stars.
Crossover - Warhammer & Mass Effect - Rated: K+ - English - Sci-Fi - Chapters: 5 - Words: 9,313 - Reviews: 27 - Favs: 76 - Follows: 113 - Updated: 5/28 - Published: 5/25 - Space Marines, Shepard
Not in one's own plate by Sicht reviews
Time has become an elusive concept, leaving V uncertain if she has been trapped for a year or even longer. Amidst lingering anxiety and worries, she clings to the belief that her sacrifices were not in vain, desperately seeking a glimmer of hope for a meaningful outcome to her plight. Since hope dies last.
Crossover - Mass Effect & Cyberpunk 2077 - Rated: M - English - Adventure/Sci-Fi - Chapters: 8 - Words: 39,810 - Reviews: 13 - Favs: 63 - Follows: 119 - Updated: 5/28 - Published: 9/8/2022 - V, OC
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