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The Spartan Effect
by Gatekeeper333 reviews
Everyone's favorite Spartan is looking for a new purpose, lucky for him, the Commander his happy to oblige.
Crossover - Halo & Mass Effect - Rated: T - English - Chapters: 27 - Words: 262,984 - Reviews: 978 - Favs: 1,567 - Follows: 1,994 - Updated: 5/31 - Published: 3/27/2011 - Master Chief/John-117, Tali'Zorah, Miranda L., Shepard (M)
Here We Go Again
by Shmack1812 reviews
"You can go home when the tank says you can."
Gate - Jietai Kare no Chi nite, Kaku Tatakeri - Rated: T - English - Adventure/Fantasy - Chapters: 29 - Words: 296,098 - Reviews: 633 - Favs: 749 - Follows: 846 - Updated: 5/29 - Published: 12/10/2015 - Tuka, Lelei, Rory, OC
The Last Spartan
by DinoJake reviews
An AU fic in which the Halo and ME universes share the same galaxy. After a well deserved rest in Cryo-Sleep, Master Chief finally awakens...to a whole new galaxy.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 51 - Words: 461,909 - Reviews: 3502 - Favs: 3,304 - Follows: 3,381 - Updated: 1/1 - Published: 5/2/2010 - Master Chief/John-117
by jamiepage19 reviews
One galaxy, two Shepards; their lives will never be the same again. With the Collectors defeated, John Shepard is about head back through the Omega 4 relay when the unthinkable happens and he and his crew are suddenly teleported back to Virmire. Once there, they stumble upon the Normandy SR-1 and he soon finds out that there's a Jane Shepard in charge and nothing is as it seems.
Mass Effect - Rated: T - English - Romance/Humor - Chapters: 34 - Words: 211,341 - Reviews: 587 - Favs: 693 - Follows: 931 - Updated: 9/22/2016 - Published: 5/30/2011 - Shepard (F), Garrus V., Miranda L., Shepard (M)
Mass Effect: Clash of Civilizations
by Eterna1Soldier reviews
In 2157 a Citadel Council exploratory vessel is tasked with opening a dormant Relay into unknown regions of the galaxy. What they find is something they never expected. What happens when two civilizations centered around different technologies clash?
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Mystery - Chapters: 21 - Words: 96,812 - Reviews: 3273 - Favs: 4,417 - Follows: 5,253 - Updated: 5/22/2016 - Published: 10/13/2011 - Tali'Zorah
From Hell's Heart
by gtamaster316 reviews
AU First Contact War. It was 48 years of endless slaughter and death. And from the pain and suffering of such unprecedented conflict, emerged an unprecedented plot, born of hate, to bring it all to an end...
Mass Effect - Rated: T - English - Sci-Fi/Tragedy - Chapters: 14 - Words: 75,788 - Reviews: 383 - Favs: 810 - Follows: 933 - Updated: 5/10/2016 - Published: 2/12/2012 - Shepard (F), Garrus V.
The Mission Stays the Same
by Broken Trident reviews
DISCONTINUED. A joke of Chaos daemon sent two unlikely allies - an Eldar Farseer and an Imperial Storm trooper, through the Warp and into another Universe. In this place, everything is alien to them. Except for one thing - war. War is something they know very well.
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 20 - Words: 263,947 - Reviews: 1826 - Favs: 2,984 - Follows: 3,233 - Updated: 4/25/2016 - Published: 10/4/2011 - Shepard (F)
Tide of War: Mass Effect Warhammer Crossover
by TheSGC reviews
Warhammer 30k Pre-Heresy and Mass Effect 2 crossover. The 25th Expeditionary Fleet, with the Alpha Legion, is en route to a pacification when something very unexpected happens …
Crossover - Warhammer & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 34 - Words: 82,578 - Reviews: 278 - Favs: 477 - Follows: 618 - Updated: 4/4/2016 - Published: 10/11/2011
For Tomorrow We Die
by ElectricZ reviews
ME2- After surviving the Omega Four Relay mission, the Normandy returns to find the galaxy in political turmoil. Cerberus has been exposed, humanity has lost its council seat, and the geth offer a peace that no one seems to desire. To complicate matters, the Reapers are coming. Most characters present. AU as it invalidates Mass Effect 3. Alternate ending begins chapter 71.
Mass Effect - Rated: T - English - Drama/Adventure - Chapters: 74 - Words: 341,352 - Reviews: 926 - Favs: 757 - Follows: 637 - Updated: 12/15/2015 - Published: 12/29/2010 - Tali'Zorah, Legion, Shepard (M), Garrus V. - Complete
by general MB reviews
Ch 12: Commander Shepard tries to sell his origin story to the people of Earth and Reach, while Halsey and Mordin's plan hits a snag. The Master Chief and his spartans are given a secret mission, as pieces start to fall into position. Events are occurring that will shape everything else that is to come.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 12 - Words: 86,373 - Reviews: 317 - Favs: 330 - Follows: 413 - Updated: 8/24/2015 - Published: 1/3/2011 - [Tali'Zorah, Shepard (M)] Master Chief/John-117, J. Keyes
Mass Effect: Records of an Irken Defective
by KiwiDayDreams reviews
An Irken stasis pod is discovered on Earth and Shepard finds herself saddled with the megalomanic Irken, Zim. Things become more complicated when they discover Zim's home planet has been reaped during Zim's stint on Earth. Set post ME2/IZ end.
Crossover - Invader Zim & Mass Effect - Rated: T - English - Adventure/Horror - Chapters: 18 - Words: 77,574 - Reviews: 240 - Favs: 454 - Follows: 427 - Updated: 5/6/2015 - Published: 6/10/2010
The Day the Arms Closed
by thesarge400 reviews
Humanity, as a whole, has been deemed 'too violent' as a species to be permitted within the Citadel and Council-controlled space. Follow those who dwell within as civil uprisings and chaos spread across a once-peaceful and grand Citadel.
Mass Effect - Rated: T - English - Sci-Fi/Drama - Chapters: 13 - Words: 37,072 - Reviews: 227 - Favs: 456 - Follows: 531 - Updated: 12/29/2013 - Published: 6/21/2011
Regret and Forgiveness
by goose2989 reviews
Mass Effect 2 centric story with Spartan B312 as a main character. While struggling to forgive himself and find peace, a certain Quarian may be the only one capable of showing it to him
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 16 - Words: 100,771 - Reviews: 306 - Favs: 471 - Follows: 508 - Updated: 12/1/2013 - Published: 7/14/2011 - SPARTAN-B312/Noble Six, Tali'Zorah
by Separatist Supporter reviews
The SPARTANs trapped in Onyx have escaped, only to find themselves in one of the last situations they expected. Post Ghosts of Onyx, during the Corellian Trilogy of SW EU. Content added to Prologue and Chapter 1. Chapter 6 complete (for now).
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 7 - Words: 18,323 - Reviews: 58 - Favs: 55 - Follows: 93 - Updated: 8/9/2013 - Published: 4/18/2011 - Leia O., Han S., F. Mendez, Tom-B292
by Animus of Masada reviews
An asari exploration vessel discovers Earth in the 2030's...and the first contact scenario has incredible implications for both species. What does humanity look like through alien eyes? Where do they go from here? /-AU: no Reapers, completely disconnected from the plot of the games, but mostly faithful to the setting. Told from many points of view.
Mass Effect - Rated: T - English - Sci-Fi - Chapters: 16 - Words: 51,333 - Reviews: 1296 - Favs: 2,570 - Follows: 2,638 - Updated: 4/10/2013 - Published: 8/12/2011
Ciaphas Cain and Commander Shepard: Blame the Eldar
by Full-Paragon reviews
When the machinations of an eldar fareer drop an entire world full of Imperial Guard, Orks, and Eldar into the Mass Effect Universe, both worlds are forever changed. Switches between the perspectives of Commissar Ciaphias Cain and Commander Jane Shepard. Rated M for language, adult situations and violence.
Crossover - Warhammer & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 10 - Words: 41,205 - Reviews: 306 - Favs: 318 - Follows: 378 - Updated: 2/5/2013 - Published: 9/5/2012 - C. Cain, Shepard (F)
by rdc30 reviews
When the Inquisition discovers a portal to another universe in the wake of the Thirteenth Black Crusade, an expedition is sent through with the goal of finding Mankind's salvation. However, not everything is as it seems in this pristine new world.
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 18 - Words: 73,492 - Reviews: 150 - Favs: 127 - Follows: 187 - Updated: 1/10/2013 - Published: 9/12/2012 - Shepard (F)
Salvation: A Half Life Mass Effect Crossover Story
by Jesse De La Rosa reviews
After Gordon Freeman is allegedly killed by the Combine, Earth enters a new technological Golden Age. Until 179 years later, when galactic civilization is threatened once more. A threat that only Earth's two greatest heroes can stop.
Crossover - Half-Life & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 46 - Words: 243,378 - Reviews: 179 - Favs: 227 - Follows: 160 - Updated: 12/13/2012 - Published: 3/7/2011
Exodus of Stars
by keiranhalcyon2010 reviews
Aleksandr Kerensky has led the war weary Star League Defense Force on a two year long journey into exile. A chance decision leads to a long awaited discovery, and final proof that humanity is not alone in the cosmos.
Crossover - Mechwarrior/Battletech & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 12 - Words: 73,164 - Reviews: 250 - Favs: 713 - Follows: 697 - Updated: 12/5/2012 - Published: 7/4/2011
by Victor Weiss reviews
Inside the Micro Dyson Sphere two humans and eight SPARTANs are finally free to leave their prison/haven only to end up in whole new universe and another war, Now they must stop forces left unchallenged for millenia. RnR and I own nothing mentioned.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 31 - Words: 114,920 - Reviews: 348 - Favs: 260 - Follows: 325 - Updated: 11/27/2012 - Published: 3/30/2010
The Commandos of Mass Effect
by Ordo Warrior reviews
A simple search and secure mission goes horribly wrong as Sigma Squad uses a strange device and are thrown into an new conflict. Rated M to be safe.
Crossover - Star Wars & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 80 - Words: 295,282 - Reviews: 179 - Favs: 262 - Follows: 193 - Updated: 11/5/2012 - Published: 5/6/2010 - OC - Complete
When There Was a Tomorrow
by General Rage reviews
Do you remember when there was a tommorow? Commander Wade Shepard does, but with a Reaper threat looming he's not sure there is one anymore. And he's about to discover that his universe may not be the only one where mankind faces extinction. M for B&V
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 25 - Words: 630,924 - Reviews: 577 - Favs: 753 - Follows: 538 - Updated: 7/31/2012 - Published: 4/13/2011 - SPARTAN-B312/Noble Six, Shepard (M) - Complete
They're Just Missing In Action
by Paragon of Awesomeness reviews
As each member of Noble Team meets their fate on Reach, they all eventually end up in the Mass Effect universe where they join forces with Shepard and his squad to stop the Collectors, and protect humanity - at any cost. Paragon male Shep, male Noble Six
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 9 - Words: 31,765 - Reviews: 124 - Favs: 194 - Follows: 212 - Updated: 6/12/2012 - Published: 5/30/2011 - SPARTAN-B312/Noble Six, Shepard (M)
Thy Rod and Staff
by PlaidButterfly reviews
After being rescued from the Collectors, Luke Skywalker finds himself aboard the Normandy - with little hope of returning home. Sequel to 'Yea, Though I Walk'.
Crossover - Star Wars & Mass Effect - Rated: T - English - Chapters: 16 - Words: 27,186 - Reviews: 125 - Favs: 187 - Follows: 221 - Updated: 5/13/2012 - Published: 7/26/2011 - Luke S., Shepard (F)
By Sheer Volume
by OnyxLeopard reviews
Resurrected from the dead, Commander Shepard must combat a synthetic race known as the Reapers. Alliances will be tested, secrets will be uncovered, and unlikely bonds will form. What does history hold that could potentially save the galaxy from doom?
Crossover - Halo & Mass Effect - Rated: M - English - Adventure/Mystery - Chapters: 13 - Words: 42,851 - Reviews: 74 - Favs: 120 - Follows: 164 - Updated: 4/6/2012 - Published: 2/20/2011 - Master Chief/John-117, Shepard (F)
by Rrazz reviews
A distress call reaches the Normandy's crew, and commander Shepard is eager to investigate it. What secrets does the USG Ishimura hold? And why does the very thought of entering the ship fill everyone with dread?
Crossover - Mass Effect & Dead Space - Rated: T - English - Horror - Chapters: 30 - Words: 115,064 - Reviews: 413 - Favs: 328 - Follows: 312 - Updated: 3/24/2012 - Published: 9/21/2010
A Noble Cause
by Vurtax reviews
Noble Six doesn't know how, but he ended up in the Mass Effect Universe. His armor is in lockdown but inside contains the info on how he got there and the knowledge of the UNSC. One Quarian might be able to crack it. Later Noble Six and Tali pairing.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 5 - Words: 28,262 - Reviews: 75 - Favs: 163 - Follows: 205 - Updated: 3/16/2012 - Published: 10/21/2011 - SPARTAN-B312/Noble Six, Shepard (F)
Storm on the Horizon
by Failcraft Heroes Society reviews
The Doctor thought he could do no more harm to the universe. It takes a fresh perspective to show him he is dead wrong. Post New!Series 3, Mass Effect post-2 pre-DLC.
Crossover - Doctor Who & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 9 - Words: 30,825 - Reviews: 73 - Favs: 215 - Follows: 313 - Updated: 2/24/2012 - Published: 1/13/2012 - 10th Doctor, Shepard (F)
by CharNobyl reviews
Shanxi becomes the first human world since Earth to be invaded by hostile aliens. Outnumbered and reeling, the GDI troops dig in for war, hoping their trenches will not become their graves. The First Contact War, with GDI replacing the Systems Alliance.
Crossover - Command & Conquer & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 9 - Words: 75,362 - Reviews: 184 - Favs: 589 - Follows: 351 - Updated: 2/18/2012 - Published: 5/4/2011 - Complete
Look Behind You
by Aquillo reviews
Stranded on a broken down station with an enemy that knows her and a man with no fashion sense, Shepard begins to question everything. Worse still, everyone starts to question her. Post-collectors and Post-series 6.
Crossover - Doctor Who & Mass Effect - Rated: K+ - English - Adventure/Humor - Chapters: 7 - Words: 26,710 - Reviews: 40 - Favs: 42 - Follows: 67 - Updated: 2/12/2012 - Published: 10/6/2011 - 11th Doctor, Shepard (F)
by Commander Copyright reviews
The Normandy is destroyed in a surprise attack, and Commander John Shepard killed. But this wasn't what went wrong. In a horrific turn of events, the Commander's body is recovered by the wrong party. As a consequence, everything changes.
Mass Effect - Rated: T - English - Drama/Adventure - Chapters: 11 - Words: 18,289 - Reviews: 192 - Favs: 358 - Follows: 413 - Updated: 2/10/2012 - Published: 6/25/2011 - Shepard (M)
Behind the Skull
by I have a jar of dirt reviews
Emile, in his final death moments, awakes in a completely different world where Humanity isn't facing extinction. A certain commander is skeptical towards the Spartan's origins. On Reach, Noble Six is looking for his missing squadmate... CANCELLED
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 12 - Words: 16,535 - Reviews: 128 - Favs: 131 - Follows: 143 - Updated: 2/5/2012 - Published: 11/12/2010 - Emile-A239/Noble Four, Shepard (M) - Complete
by Teromad reviews
The Normandy burned and Shepard died. When Cerberus brought him back he begins to notice a young girl in red following him and strange thing begin to happen. But what does this mean for him and his new mission?
Crossover - F.E.A.R. & Mass Effect - Rated: M - English - Sci-Fi/Supernatural - Chapters: 6 - Words: 27,450 - Reviews: 65 - Favs: 124 - Follows: 129 - Updated: 1/27/2012 - Published: 6/29/2011 - Alma W., Shepard (M)
A Shattered Era
by Dyranum reviews
Long after the Human-Covenant War and the Collapse of the UNSC, a discovery is made that will usher in a new era for the galaxy.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 37 - Words: 128,897 - Reviews: 129 - Favs: 108 - Follows: 103 - Updated: 1/16/2012 - Published: 6/4/2011 - Complete
by Unheard Flipper reviews
Captain John Sheperd of the UNSC, Savior of Elysium, and first human Spectre. But a firestorm is coming and will take everything he has and more to stop the two greatest threats the galaxy has ever faced
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 4 - Words: 18,529 - Reviews: 24 - Favs: 38 - Follows: 47 - Updated: 12/28/2011 - Published: 11/23/2011 - Shepard (M)
Dead Man Walking
by lsq78 reviews
In 2157, 133 years after the Ceph War, humanity makes contact with aliens again. And finds itself needing the help of one particular soldier, trapped in his Nanosuit 2.0 and stored in cryo.
Crossover - Mass Effect & Crysis - Rated: M - English - Sci-Fi/Adventure - Chapters: 5 - Words: 15,165 - Reviews: 98 - Favs: 250 - Follows: 309 - Updated: 12/26/2011 - Published: 10/25/2011
From One Doomed Galaxy to Another
by Ordo Warrior reviews
After a devistating defeat, the Ebon Hawk and her crew attempts to flee from their enemy only to be flung into a new mess. Can the Jedi ignore the blight that threatens their home to save this strange new galaxy? LS Revan and Exile, MShep Para/Earth/Sole
Crossover - Star Wars & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 34 - Words: 127,428 - Reviews: 84 - Favs: 267 - Follows: 182 - Updated: 12/12/2011 - Published: 6/18/2010 - Complete
by College Fool reviews
A species without Paragons is one with a sad and terrible history. Humanity enters a very different First Contact War, and Mass Effect as you know it will change. Warning: this fic may make you rage and wish genocidal retributions against aliens.
Mass Effect - Rated: K+ - English - Chapters: 70 - Words: 95,544 - Reviews: 898 - Favs: 872 - Follows: 500 - Updated: 9/25/2011 - Published: 7/11/2011
The Frozen Planet
by Purple Butter reviews
Shepard, Garrus and Tali land on an uncharted planet. They discover the remains of an ancient civilization and an underground vault containing an army of metal men, frozen in time. Only the Doctor can save them, but he's lost in time.
Crossover - Doctor Who & Mass Effect - Rated: K+ - English - Adventure/Sci-Fi - Chapters: 6 - Words: 13,137 - Reviews: 29 - Favs: 47 - Follows: 97 - Updated: 8/23/2011 - Published: 6/22/2011 - 11th Doctor, Shepard (F)
by Mine6Chan reviews
After a malfunction of the Omega Four Relay something nobody expected to ever happen, happened. Now, with a stranger turn of events than ever, can the Shepards and their teams, new and old, stop the growing threat of the Reapers in time?
Mass Effect - Rated: M - English - Adventure/Romance - Chapters: 8 - Words: 40,818 - Reviews: 165 - Favs: 151 - Follows: 238 - Updated: 8/10/2011 - Published: 5/16/2011 - Shepard (F), Shepard (M)
by Sith Lord Darth Revan reviews
KOTOR/Mass Effect X-Over. The Citadel receives a new guest in the form of a Mysterious Stranger. One not limited by morality, political ambition or the restraints of Element Zero. New Chapter added 7/22/11
Crossover - Star Wars & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 13 - Words: 71,664 - Reviews: 394 - Favs: 694 - Follows: 766 - Updated: 7/22/2011 - Published: 3/5/2010 - Revan, Shepard (M)
Mass Effect: The Reclaimers
by Left hand turn signal reviews
During the battle for Earth, a few UNSC soldiers make contact with a group of aliens, with their new allies they try to do all they can to save their species. Meanwhile, one of the remaining inner colonies, Shanxi, goes dark.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 13 - Words: 63,524 - Reviews: 193 - Favs: 362 - Follows: 434 - Updated: 6/9/2011 - Published: 8/13/2010 - Shepard (F)
The Sleeping Casket
by S058 reviews
The SR-2 discovers a abandoned ship. The Ship's name: Forward Unto Dawn.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure - Chapters: 21 - Words: 39,335 - Reviews: 277 - Favs: 233 - Follows: 318 - Updated: 5/31/2011 - Published: 2/18/2010 - Master Chief/John-117, Shepard (M)
Sort: Category . Published . Updated . Title . Words . Chapters . Reviews . Status .
Gate: American Expedition reviews
The Gate opens in the busy streets of Los Angeles. In response to the violent invasion, the United States sends an expeditionary force beyond the portal to secure the safety of her citizens.
Gate - Jietai Kare no Chi nite, Kaku Tatakeri - Rated: T - English - Adventure/Fantasy - Chapters: 10 - Words: 36,352 - Reviews: 56 - Favs: 122 - Follows: 178 - Updated: 6/6 - Published: 4/9/2016
He Was A Good Stalker reviews
Two friends in the Zone wilderness.
S.T.A.L.K.E.R. - Rated: T - English - Friendship - Chapters: 1 - Words: 1,226 - Reviews: 1 - Favs: 1 - Published: 5/26/2013
The Ghost and the Spectre reviews
Captain Cedric Ferguson of D Company, 1st Battalion, 5th SFG ends up in the future after an encounter with alien technology in the deep jungles of Cambodia.
Crossover - Mass Effect & Ghost Recon series - Rated: T - English - Sci-Fi/Adventure - Chapters: 1 - Words: 3,132 - Reviews: 20 - Favs: 18 - Follows: 28 - Updated: 10/27/2012 - Published: 7/23/2011 - Shepard (M)