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Quintessence Effect Collective Rebirth by EvaShinobiKaiserKnight reviews
Two Years have passed since the Paladins and the Normandy had suffered the tragedy of loss. A year since the Altean's have begun to return to the galaxy after the second battle of the Citadel. But the Reapers are not done as the Paladins and a revived John Shepard must gather allies to face this threat. This is their Rebirth into a new world of wonders as Heroes. NOW FORM VOLTRON!
Crossover - Mass Effect & Voltron: Legendary Defender - Rated: M - English - Sci-Fi/Family - Chapters: 5 - Words: 55,746 - Reviews: 20 - Favs: 25 - Follows: 28 - Updated: 2h - Published: 8/11 - [OC, Princess Allura] [Ashley W., Shepard]
Drake, Emissary by Scififan33 reviews
Tim could say with certainty that he was having a bad day. Stupid magician, stupid spells. They had a plan to deal with him, they did! That plan did not involved Tim being hit. Or waking up on an alien planet. But he could adapt. But what he really wanted was to go home. Since he couldn't, he'd help them find a way to peace with their creators, they had saved his life after all
Crossover - Batman & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 5 - Words: 23,447 - Reviews: 14 - Favs: 49 - Follows: 62 - Updated: 2h - Published: 8/24 - Timothy D./Red Robin, Tali'Zorah, Shepard
Pillars of Virtue by Son of Caliban reviews
Though divided, the Human Sphere is strong, and few among it stronger than the O-12 Council's own Commander Jonathan Shepard, the Lion of Paradiso. As a potential candidate for the Citadel's Spectre unit, Shepard must first prove his ability by solving the death of one of the Citadel's top agents, uncovering a shadowy conspiracy which will change the galaxy forever...
Crossover - Mass Effect & Infinity: A Skirmish Game - Rated: T - English - Sci-Fi/Mystery - Chapters: 3 - Words: 25,163 - Reviews: 3 - Favs: 7 - Follows: 8 - Updated: 16h - Published: 8/25 - [Shepard, Kasumi G.] Kaidan A., D. Anderson
Mass effect: Beginning of the Heresy by islamov301 reviews
Captain John Shepard and his loyal crew stopped Saren and destroyed Sovereign, an ancient Reaper who was trying to take over the Citadel to bring his army here and destroy all intelligent life in the galaxy. Shepard knew that Sovereign's death was only the beginning of the war, but every night he wondered: "Why are the Reapers destroying life in the galaxy?"
Crossover - Warhammer & Mass Effect - Rated: T - English - Romance/Adventure - Chapters: 2 - Words: 9,792 - Reviews: 8 - Favs: 9 - Follows: 14 - Updated: 23h - Published: 9/8 - [Tali'Zorah, Shepard]
Bite: ME by FriTik reviews
Sometimes a quarian's pilgrimage will take them into deep space. Most return from these journeys but there are many who do not. In such cases search teams may be sent to find these lost pilgrims and take them home. But this lost pilgrim found Copper 9, and the metal nightmares that call it home.
Crossover - Mass Effect & Murder Drones - Rated: M - English - Horror/Sci-Fi - Chapters: 2 - Words: 11,059 - Reviews: 11 - Favs: 17 - Follows: 22 - Updated: 9/11 - Published: 9/8 - J
The Terminus Exarchate by infamouswestgate reviews
Qelet B'Norai, Batarian cartel-kin and agent of the Covenant, travels the swallowed-yet-undigested worlds of the Terminus Exarchate.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 10 - Words: 28,344 - Reviews: 1 - Favs: 2 - Follows: 2 - Published: 9/11
Echoes of the Forerunners: A Covenant Unveiled by Phorus Aedelmaer reviews
The Covenant War erupts with far-reaching consequences across two universes. As the UNSC struggles to survive, they form an unexpected alliance with the species of the Citadel Council. Creative liberties will be taken with the timelines, events, and characters of both franchises.
Crossover - Halo & Mass Effect - Rated: K+ - English - Sci-Fi - Chapters: 6 - Words: 8,879 - Reviews: 21 - Favs: 24 - Follows: 38 - Updated: 9/10 - Published: 9/8
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: 68 - Words: 236,612 - Reviews: 659 - Favs: 948 - Follows: 1,040 - Updated: 9/9 - Published: 4/14/2015
Mass Effect Nega Ally by Mace sheperd reviews
Ben Tennyson was always a dour kid who thought everyone around him was a pain in the neck. Getting The Chaquetrix didn't change his misanthropic attitude. Now he finds himself in an alternate universe where intelligent machines are about to destroy all life, and if he doesn't want to die he'll be forced to cast his apathy aside and become a hero. NEGA BEN WITH CHAQUETRIX!
Crossover - Ben 10 & Mass Effect - Rated: M - English - Sci-Fi/Romance - Chapters: 1 - Words: 7,641 - Reviews: 1 - Favs: 4 - Follows: 5 - Published: 9/9 - Nega Ben, Jack
The Reclaimer Wars:The Reaper Crisis by Johnnieboy11 reviews
Six months prior to the worst crisis the normal Milky Way would face, Commander Shepard hunts the Collectors abducting human colonists in the Terminus Systems when she comes upon a terrifying new sight:Three Intergalactic fleets arrayed against each-other and her sole Frigate. Three new factions, one seeking a home and two seeking answers, all linked by the Star Roads.
Crossover - Game X-overs & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 24 - Words: 126,097 - Reviews: 140 - Favs: 214 - Follows: 272 - Updated: 9/9 - Published: 4/26 - Liara T'Soni, Tali'Zorah, Miranda L., Shepard
Canadian Blues: Beauty Marks by brooklynrhyno
Just how did Wrex get those scars? Here is the legend.
Crossover - X-Men & Mass Effect - Rated: T - English - Sci-Fi/Humor - Chapters: 1 - Words: 5,002 - Favs: 1 - Follows: 3 - Published: 9/8 - James H./Wolverine/Logan, U. Wrex - Complete
Imperium Effect: Terra Rising by Deathwatch Razgriz reviews
The long awaited sequel to UNSC Pheonix Rising. The fledgling Empire has survived it's birthpains, and now looks to the stars to rebuild what was once theirs...
Crossover - Warhammer & Mass Effect - Rated: M - English - Humor/Sci-Fi - Chapters: 20 - Words: 98,872 - Reviews: 364 - Favs: 534 - Follows: 661 - Updated: 9/8 - Published: 8/4/2017
Deathwatch: Embers (the Citadel incident) by Imperiumpilled30k reviews
999.m41 the brothers of Kill-Team Embers have been sent on what should have been a routine purging of Orkz in the Octurus sector, however something is a foot, a missing inquisitor and strange device make for a deadly pairing...with this encounter setting forth a much more dangerous chain of events... (please leave reviews)
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi/Fantasy - Chapters: 6 - Words: 35,079 - Reviews: 15 - Favs: 60 - Follows: 75 - Updated: 9/7 - Published: 7/14 - Space Marines, Deathwatch, U. Wrex, Shepard
Home is where family is by Bl4ckHunter reviews
One-shot story. The Bad Batch try to find a shelter from the Empire in the Sanctury on Horizon, but find more than they had bargained for, while learning family is more than blood.
Crossover - Mass Effect & Star Wars: The Bad Batch - Rated: T - English - Friendship/Family - Chapters: 1 - Words: 2,487 - Reviews: 1 - Favs: 3 - Follows: 2 - Published: 9/7 - 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: 29 - Words: 103,478 - Reviews: 189 - Favs: 616 - Follows: 907 - Updated: 9/7 - Published: 7/8/2022 - Rookie, Shepard
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: 22 - Words: 131,005 - Reviews: 255 - Favs: 406 - Follows: 572 - Updated: 9/7 - Published: 8/7/2023
Dying Star by Lighting wolf knight
The galaxy swallows Starfleet... And dumps them in a new land with new allies and enemies. Rated T for violence, death, and profanity.
Crossover - Mass Effect & Star Trek: Lower Decks - Rated: T - English - Sci-Fi/Adventure - Chapters: 1 - Words: 808 - Favs: 4 - Follows: 5 - Published: 9/6 - Admiral Hackett, Shepard
Pandora Effect by Depressing Rat reviews
In wake of the RDA'S defeat at the hands of the Resistance, Pandora has soon entered a state of unity with the aid of Human Resistance and Avatars by introducing Sky people technology to the Na'vi tribes, this alliance soon forming the Pandoran Alliance.
Crossover - Mass Effect & Avatar - Rated: T - English - Sci-Fi/Fantasy - Chapters: 2 - Words: 4,012 - Reviews: 10 - Favs: 14 - Follows: 24 - Updated: 9/5 - Published: 7/11
Shadows and Dust by HistoricalHijinks reviews
Shattered, Reborn, Reforged, Remade. The gaze of the Pheonix Force, seeking purpose and understanding, falls upon the Reapers and their harvests. Disgusted by their perverted, farcical 'cycle', it decides to wipe their stain from the multiverse. Needing a perfect host, it waits tens of millennia until, as Hannah Shepard is miscarrying due to eezo radiation, it finds one in her womb
Crossover - X-Men & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 6 - Words: 31,766 - Reviews: 69 - Favs: 334 - Follows: 461 - Updated: 9/5 - Published: 6/25/2023 - Ashley W., Liara T'Soni, Shepard
The N7 and Avatar by EclipsePheniox reviews
Commander Shepard and Avatar Korra have switched places. No one knows how or why, but one thing is for sure it's not good. Both the crew of the Normandy and Team Avatar must team up to solve the problem they both face. Korrasami, Shep/ Miranda. Teen, for now, possibly M later.
Crossover - Mass Effect & Legend of Korra - Rated: T - English - Sci-Fi/Fantasy - Chapters: 8 - Words: 21,128 - Reviews: 1 - Favs: 11 - Follows: 22 - Updated: 9/5 - Published: 3/19 - Miranda L., Shepard, Korra, Asami S.
Fall of the Citadel (reboot) by Richard Scepton reviews
Many years have passed since our great victory. But as we rejoice in light of what the future has for us, we also equally weep, shed tears of sorrow, for the dearly departed who have fallen for this victory to be a reality. But what was our suffering to the innocent? What was our morals to the haughty? What was, our efforts, our sacrifices, to the complacent?
Crossover - Mass Effect & Kantai Collection - Rated: T - English - Sci-Fi/Adventure - Chapters: 6 - Words: 42,116 - Reviews: 15 - Favs: 41 - Follows: 51 - Updated: 9/4 - Published: 8/4 - Admiral Hackett, Shepard, OC, Fubuki
Drift Effect by Demon Eyes Laharl reviews
In the early 21st Century, Humanity made First Contact. By the end of it, they lost Earth. However, they survived, carving their place in the sea of stars, hoping one day to finally retake back their home world. The void, though, is a dangerous place. Another alien artifact was found near one of their border worlds, which would lead to another conflict.
Crossover - Mass Effect & Misc. Movies - Rated: M - English - Chapters: 16 - Words: 116,853 - Reviews: 96 - Favs: 290 - Follows: 412 - Updated: 9/4 - Published: 8/13/2023
XCOM Terran Empire by emperorcaligula05 reviews
Sometime after the fall of the Elders at the hands of XCOM, a new government had formed from the combined efforts of the Reapers and the Templars, one that wished to see aliens not just exterminated from the face of the Earth but the eminent domain of human space. Will the might of the Citadel triumph over this new player or will the empires be swept forevermore into the dust bin?
Crossover - X-Com & Mass Effect - Rated: T - English - Sci-Fi/Angst - Chapters: 3 - Words: 11,502 - Reviews: 20 - Favs: 47 - Follows: 68 - Updated: 9/3 - Published: 8/1 - Liara T'Soni, Councilor Valern, Councilor Tevos, Councilor Sparatus
Petroleum Effect by PetroleumHead reviews
A dark alternative Mass Effect universe with a little bit of XCOM and a little bit of Cthulhu Mythos, along with some short-lived Care Bears. If humanity discovers that, in the right circumstances, petroleum can be used as a superior alternative to element zero, just how far will Earth's increasingly post-human, xenophobic, authoritarian government go to obtain oil?
Crossover - Mass Effect & Cthulhu Mythos - Rated: M - English - Sci-Fi/Horror - Chapters: 19 - Words: 68,733 - Reviews: 30 - Favs: 51 - Follows: 62 - Updated: 9/3 - Published: 9/16/2023
Blue Flames by n7kairos reviews
Shepard ends up on Middle Earth after being caught up in the Crucible explosion. Follow her now as she slowly but surely becomes embroiled in a new war.
Crossover - Mass Effect & Lord of the Rings - Rated: M - English - Fantasy/Sci-Fi - Chapters: 10 - Words: 21,681 - Reviews: 24 - Favs: 57 - Follows: 86 - Updated: 9/3 - Published: 12/6/2019 - J. Garson, Gandalf
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