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The Eternal Cycle by Imperatix reviews
The Eternal Empire has carved its place in the galaxy though unity, duty, and faith. These tenants have allowed humanity to rule the stars, however it is uncertain times in the galaxy, with the Emperor's faithful being across the galaxy, it's only a matter of time before there is conflict.
Crossover - Star Wars & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 1 - Words: 3,139 - Reviews: 17 - Favs: 61 - Follows: 75 - Updated: 56m - Published: 10/3/2023
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: M - English - Sci-Fi/Adventure - Chapters: 15 - Words: 58,195 - Reviews: 249 - Favs: 832 - Follows: 1,239 - Updated: 1h - Published: 12/26/2021 - OC, Tali'Zorah, Admiral Hackett, Rael'Zorah
The Adventures of the Lucen: The VykurCorp Conspiracy by General Rage reviews
Liara T'Soni continued her mission to protect the Galaxy while Commander Shepard is in another dimension. She must stop the Covenant and the allies they've gathered from wreaking havoc in a Galaxy without it's greatest hero. While she's had some success, there's a gathering storm on the horizon and one of her crew of misfits will be forced to confront her past before it clears.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 17 - Words: 275,180 - Reviews: 179 - Favs: 141 - Follows: 152 - Updated: 9h - Published: 6/26/2016 - OC, Liara T'Soni, U. Wrex - Complete
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: 72 - Words: 316,203 - Reviews: 287 - Favs: 406 - Follows: 528 - Updated: 14h - Published: 8/7/2022
Fall of the Citadel by Richard Scepton reviews
A fleet without an ocean, a humanity scarred forever by war. An admiral without a fleet, and a galaxy on the brink of war. It is the link in between, that will decide our fate, and that of the galaxy as a whole. CW: PTSD, depression, hand-to-hand combat and bayonets. Recommend not for children
Crossover - Mass Effect & Kantai Collection - Rated: T - English - Romance/Sci-Fi - Chapters: 15 - Words: 151,186 - Reviews: 84 - Favs: 87 - Follows: 130 - Updated: 21h - Published: 10/26/2023 - Shepard, Shigure, OC, Fubuki
As The Wind Abates by DingusMacGoo reviews
An immortal Harry Potter's journey into the future. More details to come.
Crossover - Harry Potter & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 6 - Words: 25,519 - Reviews: 35 - Favs: 154 - Follows: 240 - Updated: 2/10 - Published: 2/6 - Harry P., J. Garson, Shepard
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: 14 - Words: 103,134 - Reviews: 81 - Favs: 226 - Follows: 326 - Updated: 2/10 - Published: 8/13/2023
I Am Shepard by oliverjack666 reviews
Mass effect is own by Bioware and EA. This was Inspired by ME SI: Ultimate Krogan. Though The Dimension hopping will have to wait. Freaking Squids. After a bit of looking at my old version. I going to try to fix it up and want not. Terrible sorry for those that favored it. But the next few chapters will be just a bit different.
Crossover - X-overs & Mass Effect - Rated: M - English - Chapters: 5 - Words: 32,829 - Reviews: 1 - Favs: 17 - Follows: 22 - Published: 2/9
The Void Effect by EvaShinobiKaiserKnight
Dream not of what you are but what you want to be. A vicious cycle begins anew bringing death to the Galaxy but from deep in the Void salvation returns to the galaxy. Warrior Gods of an age long past have risen to a Galaxy on fire. Beware the Voids power of Reapers of old for the Tenno have returned and now once more they hunt for their pray. Tenno Honor till the very end.
Crossover - Mass Effect & Warframe - Rated: M - English - Sci-Fi/Adventure - Chapters: 1 - Words: 8,405 - Favs: 23 - Follows: 34 - Published: 2/8 - Ashley W., Liara T'Soni, Shepard, Operator
Ark effect Remake by EclipsePheniox reviews
After the attack on the Collector base failed, the Normandy SR-2 found themselves on Ark a planet roaming with primordial beasts. But as their Commander returns, things become more complex as they learn about Ark and the reason they are there and the purpose of the world.
Crossover - Mass Effect & ARK: Survival Evolved - Rated: T - English - Adventure/Sci-Fi - Chapters: 11 - Words: 33,669 - Reviews: 13 - Favs: 66 - Follows: 82 - Updated: 2/8 - Published: 1/3/2023 - Liara T'Soni, Miranda L., Shepard
Enthrallment Colors by undead3 reviews
Prince of the rogue human state, the Britannian Empire, Lelouch stumbles into grander conspiracies as he makes a bid for position within the Empire. Meanwhile Hana Shepard has been flung head first into a race against a renegade Spectre with the fate of all life in the balance. Are these two rising stars saviors, or destined to burn the galaxy in the flames of war?
Crossover - Code Geass & Mass Effect - Rated: M - English - Drama/Sci-Fi - Chapters: 14 - Words: 75,580 - Reviews: 40 - Favs: 43 - Follows: 52 - Updated: 2/7 - Published: 1/8 - Lelouch L., Kallen S., Shepard, Garrus 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: 28 - Words: 155,737 - Reviews: 173 - Favs: 337 - Follows: 496 - Updated: 2/7 - Published: 2/21/2022
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: 13 - Words: 57,418 - Reviews: 76 - Favs: 406 - Follows: 579 - Updated: 2/7 - Published: 7/7/2016 - SPARTAN-B312/Noble Six
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: 26 - Words: 395,885 - Reviews: 460 - Favs: 713 - Follows: 841 - Updated: 2/7 - Published: 12/28/2020 - OC, U. Wrex, Shepard, Councilor Tevos
The Traveler's Second Chance by Caldesan reviews
The Traveler has a different response to the Darkness. A story where the Guardians never accept the Darkness. The Traveler gave them a second chance, what do they do with it? Destiny shows up in Mass Effect. OC's for Destiny MC and Ghosts, different take on Destiny Lore
Crossover - Mass Effect & Destiny - Rated: M - English - Adventure/Romance - Chapters: 7 - Words: 64,818 - Reviews: 15 - Favs: 82 - Follows: 123 - Updated: 2/6 - Published: 8/6/2023
Star Mahou effect by phantompain12 reviews
Tanya finally winds up in mass effect after having dealt with Being X. Starkiller's son too ends up in mass effect after his own sacrifice to stop the empire. This is something like that. I have no idea what I am going to write. Author note: Guys, I don't know what the hell I am doing. I just decided to write and this is the result. Any help would be appreciated as Eng is 2nd lang.
Crossover - Star Wars & Mass Effect - Rated: T - English - Humor/Adventure - Chapters: 12 - Words: 26,426 - Reviews: 10 - Favs: 26 - Follows: 32 - Updated: 2/6 - Published: 1/30
Torch and Burn by Lighting wolf knight reviews
The Tau Empire was strained... And a new galaxy offers a new lease on life. Rated T for violence, death, and profanity.
Crossover - Warhammer & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 2 - Words: 2,829 - Reviews: 1 - Favs: 10 - Follows: 14 - Updated: 2/6 - Published: 12/10/2023 - Tau, Subcommander Torchstar, Admiral Hackett
Frontlines: the Attican Front by vmoneywashere reviews
For over half a decade, the Citadel is losing a war against the race simply nicknamed the Friskies (Lankies). Their worlds slowly being lost, armies even numbers in the hundreds of thousands wiped off the map, and millions dead. But hope can be found. A signal detected off in the Attician Traverse. A recon force ventures out: To find a duel between Humanity and the Lankies.
Crossover - Misc. Books & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 4 - Words: 20,943 - Reviews: 26 - Favs: 128 - Follows: 193 - Updated: 2/5 - Published: 9/4/2023
The Sword of the Geth by Doctor poo and the TURDIS reviews
Dying on Mantle's Approach, Cortana wakes up in an unfamiliar environment. In her drive to get home, she 'employs' the assistance of the local synthetics. She never wanted to be a galactic overlord. But a UNSC AI in an environment woefully unprepared for one of her caliber makes an easy one.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Humor - Chapters: 23 - Words: 123,604 - Reviews: 566 - Favs: 1,088 - Follows: 1,542 - Updated: 2/4 - Published: 11/23/2023 - Cortana, Shepard
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: 17 - Words: 59,187 - Reviews: 140 - Favs: 493 - Follows: 733 - Updated: 2/3 - Published: 7/8/2022 - Rookie, Shepard
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: 64 - Words: 228,012 - Reviews: 640 - Favs: 917 - Follows: 996 - Updated: 2/2 - Published: 4/14/2015
Mario Effect by OroDeus
Haunted by visions of impending doom, Mario summons his ragtag team of explorers to adventure. Their journey across the stars will uncover the koopa king's horrible plot to take over the galaxy.
Crossover - Mario & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 4 - Words: 4,472 - Favs: 2 - Follows: 5 - Updated: 1/31 - Published: 12/27/2023 - Mario, Luigi, Daisy, Toad
Operation ECLIPSE - Apocrypha and Sidestories by HelenTheMoon
Omakes, sidestories and Apocrypha written by me and others for Operation ECLIPSE. The Sidestories are canon, the rest just for fun. Feel free to submit content yourselves! (I'll credit you, obviously)
Crossover - Sonic the Hedgehog & Mass Effect - Rated: T - English - Chapters: 6 - Words: 8,161 - Favs: 12 - Follows: 7 - Updated: 1/31 - Published: 12/25/2023
Operation ECLIPSE by HelenTheMoon reviews
Pre-ME1 post-Frontiers Xover, in which the Sonic version of Earth replaces ME Earth. A Batarian planet suddenly turns invisible, and things only get weirder from there. That poor STG agent won't know what hit him, that's for sure. And neither will the rest of the galaxy - once Sonic and Eggman get there. Crossposted on Spacebattles and AO3. Rating may change.
Crossover - Sonic the Hedgehog & Mass Effect - Rated: T - English - Sci-Fi/Fantasy - Chapters: 5 - Words: 51,951 - Reviews: 11 - Favs: 49 - Follows: 66 - Updated: 1/31 - Published: 11/26/2023 - Sonic, Tails, OC
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: 12 - Words: 74,722 - Reviews: 143 - Favs: 274 - Follows: 405 - Updated: 1/30 - Published: 8/7/2023
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