ReaperDeus
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Joined 03-17-18, id: 10483967
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An ISOT in Grimdark by mko95 reviews
In the year 2012 AD a magical accident on the Warhammer World changes the endless fighting forever. The Wasteland is ripped away through Spacetime and changes place with Earth s Germany. On both worlds, Earth and Warhammer, nothing will ever be the same.
Crossover - X-overs & Warhammer - Rated: M - English - Fantasy/Supernatural - Chapters: 251 - Words: 1,337,266 - Reviews: 991 - Favs: 387 - Follows: 369 - Updated: 6h - Published: 12/22/2014
47 The Long, Harsh Road by Amorphous Blue Blob reviews
When Harry turns ten, he starts having dreams of another world, and another life. As a result, a rather different Harry Potter attends Hogwarts, preparing for not one, but two, coming wars. And, this time, he's not alone. IN PROGRESS. See profile for more details. A "Harry is", reincarnation and time-travel, fic, after an AU of Thor: The Dark World.
Crossover - Harry Potter & Avengers - Rated: T - English - Drama/Friendship - Chapters: 35 - Words: 137,585 - Reviews: 194 - Favs: 719 - Follows: 1,060 - Updated: 11h - Published: 5/14 - Harry P., Thor, Loki
Post-Apocalyptic Potter from a Parallel Universe by burnable reviews
Harry finally defeats Voldemort, but only after the world has been destroyed. Harry has his vengeance, but gets pulled into Voldemort's ritual and is dragged with his body to an alternate universe.
Crossover - Harry Potter & Avengers - Rated: T - English - Adventure/Family - Chapters: 36 - Words: 206,523 - Reviews: 775 - Favs: 2,225 - Follows: 2,833 - Updated: 19h - Published: 7/1 - Harry P., Black Widow/Natasha R.
Exciting Opportunities by Of Questionable Veracity reviews
In an unexpected and highly unlikely turn of events, a catastrophic warp breach from a crippled ship manages to fling a Rogue Trader - or rather, the youngest son of a Rogue Trader - through time and space to a universe quite unlike what anyone on-board in used to. They make the best of the situation.
Crossover - Warhammer & Mass Effect - Rated: K+ - English - Chapters: 21 - Words: 82,149 - Reviews: 175 - Favs: 219 - Follows: 334 - Updated: 8/29 - Published: 4/15 - Shepard (F)
All the Stars by BlueWay reviews
When the Long Night of Solace is evaporated over Reach via the weaponized usage of a Slipspace Drive, it ferries with it in its swallowed sections the Covenant Empire and, more horrifyingly, the desperate measures that the UNSC used to fight them. When they are found in a universe on the precipice of their own history, the meaning of the term "Mass Effect" will change forever.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 20 - Words: 362,913 - Reviews: 456 - Favs: 738 - Follows: 971 - Updated: 8/27 - Published: 6/8/2018 - SPARTAN-B312/Noble Six, Rookie, Shepard (F)
Mass Effect: Trailblazer by TallYapflip reviews
Humanity, left to its own devices for centuries, comes into contact with the Citadel Council. A misunderstanding leads to hostile first contact, and the UNSC is drawn into war with the Council shortly after the Insurrection's height. The Council finds itself face-to-face with a species that has broken the shackles of Mass Effect Technology. The Era of Humanity has only just begun.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 11 - Words: 54,558 - Reviews: 516 - Favs: 1,514 - Follows: 2,054 - Updated: 8/26 - Published: 7/14/2017 - Master Chief/John-117, J. Keyes, Shepard (F), Miranda L.
A Crack in the Prism of Destiny by Shadow Master reviews
(BtVS/Star Trek Universe/West Wing/SG1)[YAHF] Everyone loves a story about adventurers braving new frontiers and overcoming unknown dangers. However for one omnipotent being there are some changes he thinks just have to be made.
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: M - English - Sci-Fi/Adventure - Chapters: 4 - Words: 54,283 - Reviews: 40 - Favs: 245 - Follows: 337 - Updated: 8/25 - Published: 2/26/2018 - Xander H.
Family Ties by bymak reviews
What happens when your baby gets stolen and ends up as the expert in Stargate, especially when you are not only an abnormal but Helen Magnus? (Nope, I'm not getting any better with summaries) (If you are re-reading this summary, the issues weren't spotted before. TY ;) )
Crossover - Stargate: SG-1 & Sanctuary - Rated: K+ - English - Hurt/Comfort - Chapters: 46 - Words: 278,716 - Reviews: 92 - Favs: 83 - Follows: 124 - Updated: 8/24 - Published: 11/10/2016 - [J. O'Neill, S. Carter] Helen M., Will Z.
Ghosts of the Past by Nimbus Llewelyn reviews
Sequel to Child of the Storm. Harry's life has changed a lot over the past year, what with the return of his father, Thor, murder attempts by everything from HYDRA assassins to Elder Gods keeping him on his toes and making a few new friends. But while Chthon and HYDRA are gone, all sorts of dark things have been stirred up, things thought long gone. And guess who they're after...
Crossover - Harry Potter & Avengers - Rated: T - English - Adventure/Fantasy - Chapters: 51 - Words: 759,969 - Reviews: 3715 - Favs: 2,833 - Follows: 3,386 - Updated: 8/24 - Published: 7/12/2016
As Strong As We Are United by shadowphoenix55 reviews
...as weak as we are divided. Harry Potter, Percy Jackson, and Annabeth Chase all end up in New York at the same time. They all end up on the run from SHIELD, and they all end up meeting - right before the Avengers are first assembled and an alien army comes flying in from space. Is it a coincidence, or is it Fate… Co-written by dearemmahansen.
Crossover - Harry Potter & Avengers - Rated: T - English - Adventure - Chapters: 13 - Words: 16,247 - Reviews: 52 - Favs: 151 - Follows: 248 - Updated: 8/21 - Published: 7/16 - Harry P., Black Widow/Natasha R., Iron Man/Tony S., Hawkeye/Clint B.
Return of the Alterans by SSG-Goku3397 reviews
At the tender age of five, Harry has a bout of incredible accidental magic drawing the attention of the Ascended Alterans. Though the Ascended don't intervene, they decide to bend the rule by allowing Janus and Ganos Lal to raise Harry until the age of nine before sending him and his guardians to the Tartarus City Ship to continue his life and try to bring back the Alterans!
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - English - Sci-Fi/Fantasy - Chapters: 5 - Words: 41,657 - Reviews: 209 - Favs: 820 - Follows: 1,070 - Updated: 8/19 - Published: 5/26 - [Harry P., OC]
Effect of a Titanfall by MidnightFenrir reviews
When you die, you expect things to happen, from the void to eternal happiness. But if given the choice to live again, wouldn't you take it? I did. Since then, it's been one crazy thing after the other, the latest of which was to end up in yet another universe. But what can you expect when the manifestations of Luck and Fate themselves tell you it's going to be an adventure? OC/SI.
Crossover - Mass Effect & Titanfall - Rated: M - English - Adventure/Sci-Fi - Chapters: 5 - Words: 36,973 - Reviews: 168 - Favs: 752 - Follows: 1,047 - Updated: 8/18 - Published: 12/17/2016 - Shepard (F), Kasumi G., OC, BT-7274
DOOM Effect: V2 by zrocker119 reviews
Alexander Carter didn't accomplish anything truly worth noting during his life. So when he was offered a chance to make a difference in the overgrowing universe he accepted without much argument on his part. Now armed with the skills and knowledge of one of the deadliest and most feared warrior in existence, The Doom Slayer, Alex will make sure that all will know his name.
Crossover - Doom & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 3 - Words: 14,748 - Reviews: 210 - Favs: 900 - Follows: 1,218 - Updated: 8/17 - Published: 3/25 - Doomguy, Shepard (F)
Natasha Romanoff and the Secrets of Death by JacobApples reviews
Parallel universe time travel? Natasha Romanoff has done it. But meeting Death himself who gives her a baby who's being hunted by terrorists? That's a new one. Simply put, she might need little Harry as much as he needs her. Natasha Mother Figure. T/M rating.
Crossover - Harry Potter & Avengers - Rated: T - English - Chapters: 16 - Words: 83,752 - Reviews: 1232 - Favs: 2,238 - Follows: 3,029 - Updated: 8/16 - Published: 5/30 - Harry P., Black Widow/Natasha R.
Empress Ascendant by Unruly Marmite reviews
The Emperor wasn't sure how he ended up in a different universe, or what the parasite leeching off Humanity was. But he was the guardian of Mankind, and there was at least one person on this world worthy of taking up his mantle.
Crossover - Warhammer & Worm - Rated: M - English - Chapters: 13 - Words: 124,685 - Reviews: 433 - Favs: 1,838 - Follows: 2,401 - Updated: 8/9 - Published: 5/12/2017 - The Emperor, Skitter
For Earth and All Her Colonies by GADPELLAEON reviews
Post Human-Covenant War AU. After the Great War, all the UNSC wants to do is rebuild and live in the peace. A peace that so many died for. What happens when they learn that no matter what, war will always find them. Chapters Updated - Chapter 11 uploaded (07/08/2019) Any criticism and/or tips welcome.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 11 - Words: 73,828 - Reviews: 366 - Favs: 866 - Follows: 1,279 - Updated: 8/7 - Published: 12/27/2018 - Master Chief/John-117, Arbiter, Shepard (F), Councilor Tevos
HALO Remnant Wars by Cronus Prime reviews
Ever since I was stationed on the Spirit of Fire during the Halo Series, things went to insane, to Bat-shit crazy. After 24 years in Cryo-sleep the year is 2555, 2 years before Halo 4, 3 years before Halo 5, and 4 years before Halo Wars 2. We were woken up early much, much earlier than I had expected in orbit of an unknown Planet. It wasn't unknown to me, that Planet was...Remnant
Crossover - Halo & RWBY - Rated: M - English - Sci-Fi/Fantasy - Chapters: 16 - Words: 51,694 - Reviews: 124 - Favs: 226 - Follows: 259 - Updated: 8/5 - Published: 9/2/2017 - J. Forge, J. Cutter, OC, Team RWBY
A New Hope by OverWarlord reviews
Contingency plan Beta; Brave the vastness of intergalactic space and setup a human civilization far away from Trader-Space. There, they find a human civilization already setup...but with their own problems as well. BSG and SOASER crossover. Rated T for language...for now. Anyone interested in helping me write this story is welcome...just PM me!
Crossover - Battlestar Galactica: 2003 & Sins of a Solar Empire - Rated: T - English - Sci-Fi - Chapters: 6 - Words: 6,909 - Reviews: 14 - Favs: 25 - Follows: 26 - Updated: 8/2 - Published: 11/18/2018
Stargate: Endless Empire by Grunt Lord Ryan reviews
Alexander the GREAT... no not the emperor of old but the present day prodigy that got nowhere in life and can't even get a date is selected by a group of R.O.B.'s with a few others to entertain them. Given a Reality jumping "Stargate Puddle Jumper" to do anything he could want as long as it entertains his Patron and the other R.O.B.'s. A Mary Sue,AU,AR, Crack Multiverse fanfiction
Crossover - X-overs & Stargate: SG-1 - Rated: M - English - Sci-Fi/Adventure - Chapters: 5 - Words: 16,143 - Reviews: 42 - Favs: 142 - Follows: 188 - Updated: 7/27 - Published: 8/28/2018
A Traveling Spirit by Helljumper206 reviews
I was just colony kid living his life. Soon the Covenant came and changed all that. Then I get 'Spirited' away on a UNSC ship and fought 'inside' a alien world only to escape with just the skin off our backs. Now I'm attending a school that teaches how to slay monsters for some ONI Spook. Just what have I got myself into?
Crossover - Halo & RWBY - Rated: M - English - Friendship/Adventure - Chapters: 18 - Words: 82,221 - Reviews: 80 - Favs: 98 - Follows: 139 - Updated: 7/27 - Published: 1/12 - J. Cutter, E. Anders, OC, Team RWBY
Harry Potter and The Chance at a New Life by kossboss reviews
A small change in Harry's battle with the Basilisk had him slowly absorbing Voldemort's memories from the Horcrux in his scar. Follow Harry as he makes preparations to leave the Wizarding world behind for good and embark on a long and exciting journey into the unknown. Little does Harry expect to be launched into a world of false gods and spaceships. Smart/Powerful/Grey Harry.
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - English - Adventure/Sci-Fi - Chapters: 15 - Words: 190,032 - Reviews: 1755 - Favs: 3,780 - Follows: 4,818 - Updated: 7/26 - Published: 1/7/2018 - S. Carter, D. Jackson, J. O'Neill, Harry P.
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: 14 - Words: 70,807 - Reviews: 234 - Favs: 331 - Follows: 424 - Updated: 7/26 - Published: 8/4/2017
To Infinity by creamofwheat2311 reviews
After discovering an ancient artifact, the UNSC's most advanced warship and a Sangheili Assault Carrier are transported to a universe unlike anything they have ever seen, and forced into a war against a foe they never could have imagined.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 46 - Words: 390,407 - Reviews: 3554 - Favs: 4,075 - Follows: 4,891 - Updated: 7/25 - Published: 10/9/2013 - Master Chief/John-117, Arbiter, T. Lasky, Shepard (M)
Agent Reach by DPLxStrife reviews
After the events of Lone Wolf, Noble Six wakes up aboard the Mother of Invention. He is offered a chance from the Director to become an agent of Project Freelancer. He takes it, but will the heart of a frozen warrior need help from another? Cover art is in-game footage.
Crossover - Halo & Red vs. Blue - Rated: M - English - Sci-Fi/Romance - Chapters: 63 - Words: 219,959 - Reviews: 522 - Favs: 639 - Follows: 646 - Updated: 7/23 - Published: 10/8/2014 - [SPARTAN-B312/Noble Six, Tex/Allison] Maine/Meta
Gate: Thus the Dominion Fought There by TheWatcher2785 reviews
After two years of peace and prosperity, a mysterious gate had opened on Korhal within the capital city of Augustgrad. From it, invaders emerge straight out of medieval times as they bare threats of slavery and death to the Terran world they had set foot on. But they were soon going to learn they had picked a fight with the wrong people. R&R please.
Crossover - StarCraft & Gate - Jietai Kare no Chi nite, Kaku Tatakeri - Rated: T - English - Fantasy/Sci-Fi - Chapters: 21 - Words: 97,470 - Reviews: 877 - Favs: 1,065 - Follows: 1,292 - Updated: 7/22 - Published: 4/4/2016
In Our Bones by Here's2tomorrow reviews
"I refuse to let an opportunity like him vanish into the system!" "And I refuse to let you get THEM involved! One way or another, we will do right by that boy. Somebody has to!" ...After all, according to canon timelines, Tony is only ten years older than Harry...
Crossover - Harry Potter & Avengers - Rated: M - English - Family/Adventure - Chapters: 5 - Words: 6,043 - Reviews: 42 - Favs: 221 - Follows: 454 - Updated: 7/21 - Published: 5/1
The Scientist's Lament by WolfishMoon reviews
Following Al's restoration, the Truth sends the Elric Brothers to another universe with zero information. Neatly forged paperwork lands Ed a job teaching summer school remedial chemistry to children who are older than he is. Due perhaps to cosmic ineffability one of these summer school kids can lead the Elric brothers to precisely who the Truth had in mind. Book 6, Brotherhood.
Crossover - Harry Potter & Fullmetal Alchemist - Rated: T - English - Fantasy/Adventure - Chapters: 22 - Words: 85,879 - Reviews: 389 - Favs: 637 - Follows: 993 - Updated: 7/19 - Published: 11/13/2016
The One Where Harry Was Finally Selfish For Once by GothicRose08 reviews
After the war, Harry discovers that he had been manipulated his entire life. So when he finds a time travel ritual in his godfathers library, he asks himself 'why not' And if, in the past he finds that his father is actually alive, and not James Potter, well, let the goblins deal with the horcruxes, he always wanted to know the States, and Malibu is a lovely place to live.
Crossover - Harry Potter & Avengers - Rated: T - English - Chapters: 3 - Words: 6,730 - Reviews: 50 - Favs: 364 - Follows: 599 - Updated: 7/14 - Published: 7/4 - Harry P., Iron Man/Tony S.
Rebirth: A Stargate Tale by lateVMlover reviews
This story follows "The Slayer's New Hope" and will be set mostly in the Peagus Galaxy where Buffy awakes in time to meet a man running from the Wraith. There will be some SG-1 crossing and scenes from Earth. Updates will be slow.
Crossover - Buffy: The Vampire Slayer & Stargate: Atlantis - Rated: K+ - English - Adventure/Friendship - Chapters: 16 - Words: 48,357 - Reviews: 159 - Favs: 165 - Follows: 266 - Updated: 7/13 - Published: 8/26/2017 - Buffy S., John S., Ronon D.
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: 32 - Words: 452,176 - Reviews: 1657 - Favs: 2,436 - Follows: 3,102 - Updated: 7/12 - Published: 11/30/2015 - Master Chief/John-117, OC, Shepard (F)
Harry Potter and the Gates Address by StoogStories reviews
When Harry is killed by Voldemort at the end of his 7th year he meets dumbledore and someone else which leads him on a different path after he comes back.
Crossover - Harry Potter & Stargate: Atlantis - Rated: K - English - Supernatural/Sci-Fi - Chapters: 7 - Words: 3,608 - Reviews: 51 - Favs: 145 - Follows: 221 - Updated: 7/9 - Published: 3/3 - Harry P., Death, Teyla E., Hermione G.
Through the Eternities by Unseen Lurker reviews
You are one in a million, Little one. Where the vast majority remain ignorant of the true vastness of existence, you can freely explore it. Where others see boundaries, you see only new places to reach. This is your right, but beware, for... Ruby, pay attention. And stop trying to set my tail on fire.
Crossover - Magic: The Gathering & RWBY - Rated: T - English - Fantasy/Adventure - Chapters: 5 - Words: 35,005 - Reviews: 159 - Favs: 478 - Follows: 641 - Updated: 6/30 - Published: 9/13/2016 - Ugin, Ruby R.
The Reclaimer Effect by Thorthemighty321 reviews
It's the eve of the centennial anniversary of the beginning of the Human-Covenant War. A mere twenty years after the discovery of Prothean Ruins on Mars. A simple case of poor communication leads to a brief but violent conflict erupting and leads to the United Earth Government and it's military arm the UNSCDF coming onto the Galactic Stage of politics, mysteries, and adventures.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure - Chapters: 17 - Words: 174,265 - Reviews: 622 - Favs: 983 - Follows: 1,431 - Updated: 6/27 - Published: 2/28/2018
Cycles Upon Cycles by The Incredible Muffin reviews
The residents of the Koprulu Sector thought they had finally achieved peace. They were wrong. Now, the Koprulu Alliance is faced with a galaxy that was bigger than they thought. They will meet new friends, and more importantly, new enemies, but all will be forced to put away their hatreds, both old and new, or none will survive the darkness that is to come...
Crossover - StarCraft & Mass Effect - Rated: T - English - Sci-Fi/Supernatural - Chapters: 37 - Words: 359,067 - Reviews: 1309 - Favs: 2,047 - Follows: 2,325 - Updated: 6/19 - Published: 1/13/2015
Avengers: Battleground by Lo'Gosh reviews
After Voldemort's defeat, Harry decides to start over in a new world to find peace. However, the world will not grant him this request as the Earth needs its heroes more than ever and Harry has to answer the call. Monsters, Spies, along with costume heroes will grant him the family he has long search for. If the world doesn't destroy him first. HP/WM (God-Like HP)
Crossover - Harry Potter & Avengers - Rated: T - English - Adventure/Supernatural - Chapters: 46 - Words: 241,528 - Reviews: 4030 - Favs: 7,116 - Follows: 8,586 - Updated: 6/18 - Published: 2/14/2017 - [Harry P., Wanda M./Scarlet Witch, OC]
State of the Union by drakensis reviews
Peter Steiner-Davion has spent six years in self-imposed exile, trying to work out who he is. When a stranger arrives at St Marinus House, he must learn whether she is a sister he never knew of… or if a sister he thought he knew is someone else entirely.
Mechwarrior/Battletech - Rated: T - English - Sci-Fi/Adventure - Chapters: 7 - Words: 81,400 - Reviews: 10 - Favs: 31 - Follows: 29 - Updated: 6/17 - Published: 3/31 - Complete
Mass Effect: The New Journey by Arashi the Solar Phoenix reviews
During a Joint Deployment, the UNSC Infinity and Her Sangheili allies are suddenly thrown into a new Galaxy, and end up near Charon before the Systems Alliance discovers the Charon Relay. Alliances are forged and how will the galaxy react to an aggressive humanity that not only doesn't use Mass Effect technology, but will not let anyone stand in their way of expansion? AU PreME1
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 20 - Words: 190,674 - Reviews: 1324 - Favs: 2,207 - Follows: 2,699 - Updated: 6/11 - Published: 1/26/2014
Of Shepards and Imperials by Mandrake109 reviews
One of the oldest living perpetuals along with the remains of an inquisitorial retinue are transported into an alternative past where aliens are not simply foes to slay but friends and allies to mankind. For the perpetual it's a nice change of pace for the others? Well they may learn that co-existence might not be such a bad thing after all... Rated M for obvious reasons.
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi/Fantasy - Chapters: 4 - Words: 53,993 - Reviews: 30 - Favs: 85 - Follows: 114 - Updated: 6/6 - Published: 3/7 - Imperial Guard, OC, Shepard (F)
Legends are born by maticore reviews
Ganos lal/Morgan lefay a figure from myth, a figure from legend but how did she come about at who is the person behind the mists of history
Crossover - Stargate: SG-1 & Harry Potter - Rated: M - English - Chapters: 10 - Words: 16,636 - Reviews: 84 - Favs: 152 - Follows: 199 - Updated: 5/31 - Published: 9/17/2018
Mass Effect: The Shepard and The Doomslayer by Diamond Marine reviews
Inspired by zrocker119 and Wraith002. A normal day then a ridiculous death. That's what started off my new adventures. What are they you ask? How about going into Hell and making it fear me. That's one. Now, now I'm heading to Mass Effect to help Shepard. The Reapers will know why I am feared by Hell itself. Rip and Tear, until the job is done. Blood, Gore, and Language ahead.
Crossover - Doom & Mass Effect - Rated: M - English - Humor/Sci-Fi - Chapters: 3 - Words: 9,157 - Reviews: 26 - Favs: 83 - Follows: 128 - Updated: 5/29 - Published: 11/6/2018 - [OC, Tali'Zorah] [Shepard (F), Garrus V.]
Honor-Bound by The Incredible Muffin reviews
Shepard had thought it was over. The Reapers were defeated, at the cost of her life. Or so she thought. Now, Shepard is faced with the unknown yet again. For the first time, she found herself missing the Reapers...
Crossover - Warhammer & Mass Effect - Rated: M - English - Fantasy/Suspense - Chapters: 54 - Words: 347,701 - Reviews: 1294 - Favs: 1,234 - Follows: 1,381 - Updated: 5/29 - Published: 7/25/2015 - Complete
In Golden Light by LiquiDSoL reviews
The Eternity Gate is broken. Mankind stands at the precipice of annihilation. One single elite member of the Legio Custodes, torn from his sworn father and liegelord, appears in another world where Mankind is oppressed by their machine overlords. Bathed in Golden Light, the lion of the Emperor shall be unleashed. Humanity will stand. M for violence, language, etc.
Crossover - League of Legends & Warhammer - Rated: M - English - Adventure/Sci-Fi - Chapters: 5 - Words: 16,438 - Reviews: 13 - Favs: 35 - Follows: 54 - Updated: 5/29 - Published: 12/8/2018 - OC, Ashe, Vayne, Yasuo
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. (5-23-19 Info: On Hiatus after Chapter 45. Will update with schedule after life is in order.)
Crossover - Halo & Mass Effect - Rated: T - English - Chapters: 45 - Words: 495,928 - Reviews: 1673 - Favs: 2,360 - Follows: 2,923 - Updated: 5/23 - Published: 3/27/2011 - Master Chief/John-117, Tali'Zorah, Miranda L., Shepard (M)
Are You Sure This Is A Good Idea? by BuffPidgey reviews
For political reasons, Britain asks Amestris for a bodyguard. For political reasons, Amestris sends the Fullmetal Alchemist. Unfortunately for both sides, neither Harry nor Ed really like this idea. Unfortunately for both boys, they're stuck with it. Crossposted on AO3
Crossover - Harry Potter & Fullmetal Alchemist - Rated: T - English - Adventure - Chapters: 17 - Words: 88,466 - Reviews: 266 - Favs: 541 - Follows: 857 - Updated: 5/20 - Published: 7/10/2017
Element Halo by Iron Warriors reviews
When we started to expand past the Orin Arm of the Milkyway, we didn't know what to expect. Once we were out there though, things changed big time. For those brief 30 years we were the top dogs of the galaxy in all powers but like always when humanity reaches a higher seat of power, something always comes to make us fall... This time however the fall will cost our entire race.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 23 - Words: 82,562 - Reviews: 225 - Favs: 445 - Follows: 667 - Updated: 5/20 - Published: 12/11/2017 - OC
SG-Harry by feauxen reviews
Harry's been wandering the multiverse for some time, researching the mysteries of magic. When he comes across the SGC, he can't help but wonder why Ancient technology seems to work WITH magic instead of exploding on contact. This inevitably leads to all sorts of trouble, and a wizard in the Pegasus galaxy. Harry's a cheeky genius, but not the MoD or even overpowered. Much.
Crossover - Stargate: Atlantis & Harry Potter - Rated: T - English - Adventure/Humor - Chapters: 10 - Words: 55,007 - Reviews: 334 - Favs: 1,201 - Follows: 1,770 - Updated: 5/17 - Published: 6/22/2018 - Harry P., Elizabeth W., Rodney M., Radek Z.
Ex Astris Gloria by alienyouthct reviews
When the true nature of the Veil of Death is finally discovered, Harry and Luna embark on a journey unlike anything they could have possibly imagined. An authorized reimagining of Lightning among the Stars. "f*ck this is good! and fun! I don't want to read the story this is based on because nothing shall distract me from this!" - papiliokaze
Crossover - Harry Potter & Mass Effect - Rated: M - English - Sci-Fi/Romance - Chapters: 25 - Words: 91,947 - Reviews: 664 - Favs: 2,205 - Follows: 2,939 - Updated: 5/13 - Published: 11/20/2014 - [Harry P., Luna L.] Miranda L., Aria T'Loak
Master Potter of Kamar-Taj by Ryuko monogatari reviews
How does the wizarding world react when it finds out that it is not the only wizarding world? A young Harry is taken to the home of Dr Stephen Strange, and is far more ready for the challenges he will be made to face
Crossover - Harry Potter & Avengers - Rated: T - English - Fantasy/Adventure - Chapters: 25 - Words: 84,214 - Reviews: 1028 - Favs: 2,834 - Follows: 3,953 - Updated: 5/12 - Published: 12/2/2016 - Dr. Strange/Stephen S.
Transposition, or: Ship Happens by ensou reviews
Whatever she expected when she triggered, it wasn't meeting a short white-haired girl or turning into a hyper-advanced technological platform. Of course when you're Taylor Hebert, things frequently don't go as planned.
Crossover - Worm & Arpeggio of Blue Steel/蒼き鋼のアルペジオ - Rated: T - English - Adventure - Chapters: 18 - Words: 93,958 - Reviews: 966 - Favs: 2,639 - Follows: 3,023 - Updated: 5/12 - Published: 8/5/2016 - Skitter, Tattletale, Vista, Victoria D./Glory Girl
The Greatest Prison by evevee reviews
Tracer never talked about her time as a lost soul. She's known now as the excitable Brit, the puppy of Overwatch, the fearless point on any offensive. Winston had always suspected some form of trauma, and Widow had proved that at King's Row. Unbeknownst to all, her true terror approaches, and as one wise man once said, "If you were his enemy...may god help you."
Crossover - Halo & Overwatch - Rated: M - English - Sci-Fi/Adventure - Chapters: 12 - Words: 60,651 - Reviews: 163 - Favs: 624 - Follows: 938 - Updated: 5/12 - Published: 9/12/2016 - Master Chief/John-117, Arbiter, Amélie L./Widowmaker, Lena O./Tracer
To change fate by fanfictionfanaticX reviews
Fate is a weird thing. By trying to stop it or change it, you discover that it has all already been written. Or has it? This is a Stargate and BSG 2003 crossover.
Crossover - Stargate: SG-1 & Battlestar Galactica: 2003 - Rated: T - English - Sci-Fi - Chapters: 28 - Words: 395,824 - Reviews: 324 - Favs: 345 - Follows: 456 - Updated: 5/10 - Published: 12/22/2016
The Lone Wolf at Hogwarts by Hokuto Ulrik reviews
After the disastrous ending of the Tri-Wizard Tournament, Harry begins to relive a past lifetime. Taking up the mantel of the Lone Wolf of Beta Company, Harry begins to remove his enemies and forge new alliances. How will the wizarding world react to a Hyper Lethal Vector in their midst?
Crossover - Harry Potter & Halo - Rated: M - English - Adventure/Sci-Fi - Chapters: 4 - Words: 9,111 - Reviews: 70 - Favs: 330 - Follows: 480 - Updated: 5/1 - Published: 10/24/2017 - Harry P., SPARTAN-B312/Noble Six
Jimmy Evans by TheNewJeniferChurch reviews
Harry runs away to America and eventually joins the Air Force under an assumed name. He ends up on SG-20, and is captured by Herur. His host is damaged, so he tries to take Harry as a replacement. Big mistake. Chapter 3 is up.
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - English - Adventure/Drama - Chapters: 3 - Words: 11,899 - Reviews: 116 - Favs: 656 - Follows: 1,205 - Updated: 4/30 - Published: 1/24 - S. Carter, D. Jackson, J. O'Neill, Harry P.
Ever Forwards by kivey reviews
It should have been an easy win, maybe the plan wasnt great but he at least had one. Now He's Thousands of years out of place, and put in charge of a galactic empire. The only goal he's given: The Survival and success of the Empire and himself. Then again, the Galaxies a dangerous place.
Crossover - Harry Potter & Stellaris - Rated: M - English - Adventure/Sci-Fi - Chapters: 14 - Words: 77,555 - Reviews: 38 - Favs: 98 - Follows: 127 - Updated: 4/29 - Published: 11/30/2017
Imperium Effect by BlackPhantom247 reviews
As the Great Crusade grinds on, the Emperor has finally found the last of his sons. But unfortunately someone has been pulling the strings and now Chaos Undivided is ready to make it's move. Warhammer AU. M for eventual bloodshed. Also contains elements of Attack on Titan. Part 1 of the Rebellion series. Reviews are welcome.
Crossover - Warhammer & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 6 - Words: 12,712 - Reviews: 52 - Favs: 114 - Follows: 146 - Updated: 4/27 - Published: 11/14/2016 - The Emperor, Primarch/s, Shepard (M)
Like the Galaxy Wasn't Strange Enough Already by MojoTheSpaceMonkey reviews
Harry felt the need to start over after the wizarding world took that final step off the ledge to insanity. What better place to begin fresh than a new galaxy where he would be the only magical?
Crossover - Harry Potter & Mass Effect - Rated: M - English - Humor/Adventure - Chapters: 24 - Words: 159,076 - Reviews: 685 - Favs: 1,872 - Follows: 2,466 - Updated: 4/26 - Published: 6/7/2017
Infinity by GatsuBerk reviews
Given the chance of a lifetime our favorite Zeppo is going to hit the ground running and won't care about whom or what he knocks down along the way. He was once powerless and now he has the ability and resources to fight evil his way.
Crossover - Buffy: The Vampire Slayer & Halo - Rated: M - English - Sci-Fi/Fantasy - Chapters: 5 - Words: 68,489 - Reviews: 71 - Favs: 310 - Follows: 367 - Updated: 4/24 - Published: 1/14/2017 - Xander H., Buffy S., Master Chief/John-117, Roland
Mass Effect: Human Revolution by IgnusDei reviews
Adam Jensen finds himself in a time only dreamed of in vids, humanity is now part of a great galactic community that fears synthetics, and he struggles to find his place within it. Note: Primarily a DX/ME crossover, with elements borrowed and integrated from other Square Enix franchises.
Crossover - Deus Ex & Mass Effect - Rated: M - English - Sci-Fi/Supernatural - Chapters: 89 - Words: 859,638 - Reviews: 2515 - Favs: 2,542 - Follows: 2,607 - Updated: 4/19 - Published: 3/12/2012
Shattered Fate by Illuviar reviews
The year is 2175 and the galaxy is at peace. In the Terminus Systems, Battarian sponsored pirates gather, willing to test the resolve and capabilities of the System Alliance. At a X-COM facility, the last surviving soldier from the last war has been released from stasis, ready to be healed. Meanwhile the Ethereals plot in the shadows beyond the Relay Network and Nazara awakens...
Crossover - X-Com & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 26 - Words: 80,121 - Reviews: 83 - Favs: 290 - Follows: 371 - Updated: 4/19 - Published: 2/3/2016
Spartan and Wolf: Realities Collide by Arisentactica reviews
Chief and Cortana drift to a forerunner planet in the remains of the Forward Unto Dawn. In another timeline, in another part of the Galaxy, an admiral is the lone survivor of a costly battle. Will they meet? Will they become allies or bitter enemies? Where will they go and what will they do? M for blood, gore, and language. HIATUS! (Chapters 5-6 being rewritten!)
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 7 - Words: 36,246 - Reviews: 33 - Favs: 109 - Follows: 149 - Updated: 4/2 - Published: 10/11/2018 - Master Chief/John-117, Cortana, OC, T. Vasir
Imperial Warlord by deeed22 reviews
A man and his friends are conscripted for a mission. Will they succeed in their endeavors? Will they be able to figure out whats going on? Can they make themselves a home in a strange universe?
Crossover - Warhammer & Mass Effect - Rated: M - English - Adventure - Chapters: 13 - Words: 61,127 - Reviews: 117 - Favs: 220 - Follows: 294 - Updated: 4/2 - Published: 6/20/2018 - Imperial Guard, Adeptus Mechanicus, Shepard (F)
The Fall of Phaeton by Griff1007 reviews
New Vegas awaits the coming storm with bated breath. A confrontation is brewing at Hoover Dam between two ideologies and the enigmatic Mr. House. The Courier may very well hold the key to New Vegas' future. Until a wildcard arrives from the stars. Will they represent a Force Majeure or will they fall to the wasteland like so many before them?
Crossover - StarCraft & Fallout - Rated: M - English - Adventure/Sci-Fi - Chapters: 40 - Words: 197,213 - Reviews: 58 - Favs: 80 - Follows: 105 - Updated: 3/28 - Published: 5/26/2015
DOOM Effect by zrocker119 reviews
Alexander Carter was a normal man that lived a normal life. That is until he was hit and killed by a drunk driver. Now dead he is offered a chance by a powerful being to be a part of something much that he thought only existed in fiction. Mass Effect SI story with the MC starting out in DOOM 2016. Rating should be for obvious reasons. Pairings have been decided.
Crossover - Mass Effect & Doom - Rated: M - English - Adventure/Sci-Fi - Chapters: 15 - Words: 57,757 - Reviews: 589 - Favs: 1,634 - Follows: 1,944 - Updated: 3/25 - Published: 6/25/2016 - Shepard (F), Miranda L., OC
Hades Effect:Spartans of the Normandy by Johnnieboy11 reviews
In the year 2549, an ONI Spartan-III Team, known as Team HADES, goes missing with their ship, the UNSC Diamond in the Rough whilst on a mission to destroy a Covenant Staging ground. What neither they, nor the UNSC know is that the Spartans had been sent to a world beyond their own, a galaxy similar to theirs, but far more different... With a darker threat looming...
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Romance - Chapters: 10 - Words: 32,819 - Reviews: 15 - Favs: 77 - Follows: 110 - Updated: 3/16 - Published: 12/19/2016 - OC, Shepard (F)
Harry Potter Meets the Starks and the Gods with Them: Hogwarts Years by PuffsOfPygmys reviews
Sequel - Harry and Co. finally make it to Hogwarts after an eventful summer. What adventures lay ahead of them, what of Dumbledore's plans and of Regulus Black? [Harry Potter/Draco Malfoy, Catlin Stark/Severus Snape/Regulus Black, Sirius Black/Remus Lupin. There will be eventual slash, not very graphic, but still mentioned. All characters will be over the age of consent (16).]
Crossover - Harry Potter & Avengers - Rated: M - English - Adventure/Romance - Chapters: 10 - Words: 34,404 - Reviews: 73 - Favs: 242 - Follows: 356 - Updated: 3/10 - Published: 8/14/2018
Soft as Thunder by silencewillfall009 reviews
Strength. Discipline. Honor. These are the pillars of Turian Society. And after meeting a race faced with extinction, they will stand by these pillars. No matter what the Asari say.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Fantasy - Chapters: 3 - Words: 4,309 - Reviews: 109 - Favs: 376 - Follows: 619 - Updated: 3/4 - Published: 11/27/2017
The Return by fmfan1980 reviews
This is an alternate future AU to my 'An Extraordinary Journey' story. Atlantis detects an attacking force of unknown vessels heading for Earth, and a ship is sent from Pegasus to help in the planet's defence. Is this just a one off encounter to protect the ancestral home of Humanity, or the prelude to an unexpected return of old enemies? (BSG 2003 and BtVS included)
Crossover - StarTrek: Other & Stargate: SG-1 - Rated: K+ - English - Chapters: 27 - Words: 164,201 - Reviews: 189 - Favs: 196 - Follows: 239 - Updated: 3/4 - Published: 10/6/2016
An Extraordinary Journey by fmfan1980 reviews
Formerly titled "An Extraordinary Meeting", Willow from Sunnydale arrives at the SGC under extraordinary circumstances and goes on amazing adventures with the gang from the SGC. BSG:2003 also included in later chapters. (26.08.2018: Slight edits on Chap 111, 116, and 125.)
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: T - English - Sci-Fi/Drama - Chapters: 225 - Words: 1,527,218 - Reviews: 992 - Favs: 413 - Follows: 486 - Updated: 3/4 - Published: 1/26/2014 - [Faith L., Willow R.]
I Fleetly Flee, I Fly by emouse33 reviews
A slightly different encounter with Quirrell at the end of first year leads to new problems, new abilities, and a gateway to the extraordinary. A HP/Avengers crossover that respects the timelines while throwing in new twists and characters you may not have seen coming. Now in Year 3. Enjoy!
Crossover - Harry Potter & Avengers - Rated: T - English - Adventure - Chapters: 20 - Words: 97,828 - Reviews: 232 - Favs: 849 - Follows: 1,314 - Updated: 3/3 - Published: 5/7/2018 - Harry P.
Alchemic Wizardry by swimmjacket reviews
Ed is back from Xeres and Mustang has a new set of orders for him. Teach at Hogwarts School of Witchcraft and Wizardry! Ed and Al go to England for Ed to teach Alchemy and Al to research magic in hopes of getting their original bodies back. During Order of the Phoenix and set in the BROTHERHOOD 2009 series/manga (around episodes 18-20) T for some violence and Ed's mouth!
Crossover - Harry Potter & Fullmetal Alchemist - Rated: T - English - Adventure/Humor - Chapters: 44 - Words: 171,654 - Reviews: 1082 - Favs: 1,441 - Follows: 1,794 - Updated: 2/28 - Published: 9/16/2014 - Harry P., Alphonse E., Edward E.
A God Among Us? by Aianoir reviews
A Goa'uld stayed on Earth after the rebellion that forced Ra to leave. Having been forced into taking a magical host, it finds itself attending Hogwarts and being drawn into a war on multiple fronts. AU.
Crossover - Harry Potter & Stargate: SG-1 - Rated: M - English - Adventure - Chapters: 16 - Words: 91,201 - Reviews: 276 - Favs: 658 - Follows: 935 - Updated: 2/27 - Published: 1/25/2017 - OC
Starfall on Remnant by silencian reviews
Essentially follows the adventures of a SI/OC character in the world of RWBY given the powers and technology of a Terran Commander.
Crossover - StarCraft & RWBY - Rated: M - English - Sci-Fi - Chapters: 26 - Words: 48,621 - Reviews: 63 - Favs: 175 - Follows: 197 - Updated: 2/24 - Published: 1/1/2018
On the Illusion of Might by evevee reviews
We thought ourselves powerful, able to conquer a galaxy with nothing but toys. When we overcame every challenge, breached the space between the galaxies themselves, what use were the words of a race ashamed of their own past? Yet we cannot deny that we were warned, for while a challenge to a human is laughable, a challenge to humanity is a death sentence.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 20 - Words: 225,409 - Reviews: 1316 - Favs: 2,099 - Follows: 2,779 - Updated: 2/21 - Published: 2/21/2017 - Master Chief/John-117, Cortana, Shepard (F), Garrus V.
The Unknown by LostGirlInTheForest reviews
Fem!Harry. After saving the Philosopher's stone, Dahlia Potter soon discovers the world isn't as black and white as she believes it to be. She suddenly discovers the truth of her true parentage and is faced with the threat of not just Lord Voldemort, but beings and people off realm, who would wish her harm, if they discovered who her father is.
Crossover - Harry Potter & Avengers - Rated: T - English - Drama/Family - Chapters: 72 - Words: 355,002 - Reviews: 1778 - Favs: 2,927 - Follows: 3,224 - Updated: 2/21 - Published: 11/4/2017 - Complete
Harry and the Pirates by Technomad reviews
Harry Potter grew up in Roanapur, with his loving Aunt Petunia, his best friend/cousin Dudley, and the woman they all worked for, Balalaika! Until the day a mysterious visitor arrived with news that would change both boys' lives forever...
Crossover - Harry Potter & Black Lagoon - Rated: T - English - Adventure/Humor - Chapters: 71 - Words: 178,302 - Reviews: 518 - Favs: 991 - Follows: 1,089 - Updated: 2/15 - Published: 2/15/2012 - Harry P., Balalaika
Walking Through by AnguishOC reviews
Harry Potter – Now Unspeakable has chosen to study the Veil, not for its mysteries but for its isolation and proximity to the Ministry. In his free time, he has kept himself busy with any whim and desire. Now nearly three years since Voldemort's defeat and Harry is ready to move on to the next great adventure. Interestingly, the Veil has whispered something about a Stargate.
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - English - Adventure/Sci-Fi - Chapters: 2 - Words: 6,893 - Reviews: 45 - Favs: 337 - Follows: 611 - Published: 2/10 - S. Carter, D. Jackson, J. O'Neill, Harry P.
Republic of Terra by SonoftheLost reviews
From the very begin, we wondered if we are alone. If we have a place in the universe beyond our world. Now we take our steps out of the crib and into worlds beyond our own. Under the command of the Republic of Terra and the Chancellor at the helm, humanity is unified and ready to face anything we may face.
Crossover - Civilization Series & Mass Effect - Rated: M - English - Spiritual/Sci-Fi - Chapters: 6 - Words: 16,354 - Reviews: 29 - Favs: 122 - Follows: 174 - Updated: 2/6 - Published: 5/21/2018
Dawn of Valor: Lightning's Horizon by Hunter Dracon reviews
A feisty lone wolf Hunter of the Guardians of the City who's determined to remember her past. A green armored super-soldier from long ago with an AI that remembers the Hunter, plus an elite force determined to wipe out the remnants of Humanity, taking away the Traveler's Light and stripping the Guardians or their power. It's the Dawn of Valor my friends, you don't want to miss it.
Crossover - Halo & Destiny - Rated: M - English - Adventure/Sci-Fi - Chapters: 5 - Words: 10,707 - Reviews: 9 - Favs: 26 - Follows: 42 - Updated: 1/31 - Published: 12/7/2018 - Master Chief/John-117, OC
The Lost Primarch by ArmedSammy123 reviews
No Imperial records of the Second Primarch or his Legion of Adeptus Astartes exist. They have long since been purged on orders of the Emperor, yet this does not mean he did not once live, nor that he does not still live. In a Galaxy eerily similar yet foreign to the one he once inhabited, will the Primarch of the Second Legion be able to survive and adapt or will he die forgotten?
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 3 - Words: 23,667 - Reviews: 57 - Favs: 238 - Follows: 363 - Updated: 1/28 - Published: 5/11/2018 - Primarch/s, Shepard (F), Liara T'Soni, Tali'Zorah
Harry Potter Prince of Blades by Dreximus0000 reviews
After the end war and death of Amon. A fleet of the three Koprulu Races join and set out to explore the multiverse. Centuries later they hear a psionic cry for help. Finding a child they take him with them. How will the universe handle a Harry Potter raised to be a hero.
Crossover - Harry Potter & StarCraft - Rated: M - English - Chapters: 5 - Words: 14,475 - Reviews: 12 - Favs: 109 - Follows: 172 - Updated: 1/26 - Published: 12/15/2018 - Harry P., James R., Sarah K.
Avalon, Secret of the Stars by donniedarko81 reviews
A hidden history revealed and the dawning of a new era or the end of another. There is some bashing in this story. You don't like it don't bother reading.
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - English - Sci-Fi/Adventure - Chapters: 43 - Words: 231,494 - Reviews: 1027 - Favs: 1,647 - Follows: 2,172 - Updated: 1/24 - Published: 4/27/2016 - [Harry P., Hermione G.]
The Displaced Spartan by Noidontthinkso7924 reviews
The damage done to the Dawn during the slipspace jump had unintended consequences.
Crossover - Halo & Stargate: Atlantis - Rated: M - English - Chapters: 2 - Words: 1,580 - Reviews: 10 - Favs: 26 - Follows: 54 - Updated: 1/14 - Published: 12/5/2018
The Unknown Defender by Gabenator5 reviews
While Shepard is closing in on Saren. Stories begin to spread among the pirates and slavers of the galaxy. Rumors of a nameless fear, of a creature, a demon wreathed in green armor. It and its allies appear from nowhere slughtering all who oppose them, then vanish without a trace. What is the purpose of this unknown faction... and what will they do next?
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 17 - Words: 115,734 - Reviews: 1006 - Favs: 2,631 - Follows: 3,438 - Updated: 1/13 - Published: 9/27/2016 - Master Chief/John-117, Cortana, Shepard (F), Tali'Zorah
Harry potter and the Inheritance by daniphantomforlife reviews
After being entered against his will in the Goblet of Fire everyone turns on him thinking that he entered the Stupid thing wanting even more fame he decided to learn everything and along the way finds out surprising things about his family " What do you mean I'm not a Potter!" Fem Harry since someone complained
Crossover - X-overs & Harry Potter - Rated: M - English - Family/Adventure - Chapters: 30 - Words: 68,738 - Reviews: 178 - Favs: 231 - Follows: 278 - Updated: 1/9 - Published: 8/13/2018 - Harry P.
Mass Effect: Universal Outcasts by Gyvon reviews
Shepard's mission to stop the Collectors had only just begun when she receives a strange distress call. She directs the Normandy to an uninhabited planet, where she finds four strange people, people not even from her universe, but from somewhere else. Somewhere far more hostile than her universe. A universe where something like the reaper threat has another name; Tuesday.
Crossover - Warhammer & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 1 - Words: 5,590 - Reviews: 29 - Favs: 90 - Follows: 175 - Published: 1/1 - Eldar, Deathwatch, Sisters of Battle, Shepard (F)
A SPARTAN and a Huragok Abroad: Sera Ahoy! by Camolot the Creator reviews
A Huragok and a SPARTAN-II, completely by accident, take the Covenant heavy corvette Ardent Prayer for a universe-hopping joyride. Perhaps some good can come of this? And what kind of idiot names their planet Sera? The first arc in what I hope to be a series of fics, all orbiting around Jorge-052, a huragok named Bobs Occasionally and the Ardent Prayer.
Crossover - Halo & Gears of War - Rated: T - English - Sci-Fi - Chapters: 7 - Words: 20,099 - Reviews: 15 - Favs: 84 - Follows: 117 - Updated: 1/1 - Published: 2/1/2017 - Jorge-052/Noble Five
Independence Day: Mass Contact by D'terran reviews
Over 150 years after the War of 1996, the United Systems Alliance now has to face the wider galaxy with fewer ships, better tech, and a fear of alien species caused by a war that united the world against a very real alien threat. Now they have new troubles on the horizon...
Crossover - Mass Effect & Independence Day - Rated: T - English - Sci-Fi/Adventure - Chapters: 3 - Words: 9,630 - Reviews: 70 - Favs: 267 - Follows: 355 - Updated: 12/29/2018 - Published: 8/11/2018
City of the Reapers by Civilian Paradox reviews
Mass effect/SG-1/Atlantis AU. The crew of the SGC want to help those in need. How will they fare when they are thrust into the unknown? Will they be able to help defend a new galaxy? [ABANDONED]
Crossover - Stargate: Atlantis & Mass Effect - Rated: T - English - Chapters: 6 - Words: 20,026 - Reviews: 25 - Favs: 78 - Follows: 113 - Updated: 12/20/2018 - Published: 4/11/2018 - John S., S. Carter/Sam, Shepard (F)
The Pegasus Intervention by kaln7 reviews
With the Covenant war over the UNSC can finally begin exploring the universe, but there first step outside their galaxy could lead them to another enemy that would prefer to feed on them instead of destroying them, can one ship survive in a galaxy teaming with an overwhelming enemy or will they get help from a group of humans who are also exploring the universe themselves.
Crossover - Halo & Stargate: Atlantis - Rated: T - English - Sci-Fi/Adventure - Chapters: 10 - Words: 75,688 - Reviews: 102 - Favs: 183 - Follows: 254 - Updated: 12/19/2018 - Published: 4/7/2017
Stargate Valkyrie by Brenna's Urbangirl Projects reviews
On that fateful Halloween night. Buffy, Xander, Willow, Dawn, Cordelia, Harmony, Giles, Jenny Calendar and Oz would be given a new destiny. Along with that destiny they would be given a 3 space going vessels in which to help fight the Goa'uld.
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: T - English - Sci-Fi/Supernatural - Chapters: 8 - Words: 18,400 - Reviews: 66 - Favs: 246 - Follows: 356 - Updated: 12/10/2018 - Published: 6/15/2017 - Xander H., Buffy S., Dawn S., Willow R.
Desperate Times Call For Desperate Measures by ARCCaptainFordo reviews
To defeat Horus and his fellow traitors wouldn't be easy. While the Emperor answered Horus' open challenge at Istvaan III by dispatching seven of his sons to deal with their errant brothers, the Imperium dispatched a battle group of the best forces on hand at the time to deal a blow to the traitors by attacking a Dark Mechanicus Forge World. The Dark Gods have other plans.
Crossover - Warhammer & Mass Effect - Rated: M - English - Sci-Fi/Fantasy - Chapters: 5 - Words: 89,220 - Reviews: 91 - Favs: 178 - Follows: 251 - Updated: 12/6/2018 - Published: 7/16/2016
A new Emperor by flaming hunter reviews
What if the Emperor of mankind was reborn in the Dc universe.
Crossover - Warhammer & Green Lantern - Rated: T - English - Sci-Fi/Adventure - Chapters: 4 - Words: 1,713 - Reviews: 29 - Favs: 38 - Follows: 50 - Updated: 12/5/2018 - Published: 11/16/2015
A Battle of Wills by insinr8 reviews
Following the destruction of the Temple Ship, humanity rises to become stronger than ever, and is determined that they will never again allow any enemy to repeat what the Ethereals did. In Vigilo Confido.
Crossover - X-Com & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 59 - Words: 262,053 - Reviews: 781 - Favs: 1,151 - Follows: 1,390 - Updated: 12/5/2018 - Published: 7/4/2015
Harry Potter and the Stargate by Sinyk reviews
What if Remus was not... quite... as fast as he needed to be to catch Harry before he tried to get to Sirius in front of the Veil of Death. And what if the Veil was not what the magicals believed it to be? Oops! AU HP/LL Bash!AD/RW/GW (as my usual).
Crossover - Harry Potter & Stargate: SG-1 - Rated: M - English - Fantasy/Sci-Fi - Chapters: 24 - Words: 224,912 - Reviews: 3111 - Favs: 4,005 - Follows: 3,807 - Updated: 11/24/2018 - Published: 9/1/2018 - [Harry P., Luna L.] Sirius B., Remus L. - Complete
Dreadnought by Raller49 reviews
The Dreadnought Ventrau has been sent to the mass effect universe, what kind of change will it bring and what will happen to the species it comes into contact with?
Crossover - Mass Effect & Stellaris - Rated: T - English - Sci-Fi - Chapters: 1 - Words: 1,571 - Reviews: 9 - Favs: 35 - Follows: 49 - Published: 11/22/2018
Revenant by Quatermass reviews
An immortal Harry, cast through the Veil, ends up in Oxford over five decades into the past. Taken in by Charles Xavier and Raven, he falls for the shapeshifter. Now, in 1962, Harry must help Charles and Raven as they help the CIA investigate the sinister Sebastian Shaw...but as a man fixed on revenge gets involved, Harry and Raven have to wonder where their loyalties lie...
Crossover - Harry Potter & X-Men: The Movie - Rated: M - English - Sci-Fi/Fantasy - Chapters: 8 - Words: 19,903 - Reviews: 195 - Favs: 1,145 - Follows: 1,399 - Updated: 11/19/2018 - Published: 6/10/2018 - [Harry P., Raven/Mystique] Erik L./Magneto, Charles Xavier/Professor X
SSDD by K2JC reviews
After an anomaly in Slipspace sent the Assault Carrier, Power Overwhelming, off course and into another dimension where everything is a whole lotta different. One thing stayed the same. Humanity is once more threatened by genocidal aliens. Is this really a thing? Where Humans are constantly attacked by alien assholes? Well... Same Shit, Different Day.
Crossover - Halo & Mass Effect - Rated: M - English - Adventure - Chapters: 8 - Words: 32,427 - Reviews: 18 - Favs: 102 - Follows: 143 - Updated: 11/15/2018 - Published: 8/29/2018 - Shepard (F), OC
The Roads of War by Sierra.BN312 reviews
Our galaxy is home to billions of stars, each star could hold new life, and every life holds a new story. Commander Jane Shepard attempts to rally the galaxy against the Reaper threat, but a distress signal leads her to discover more than what she bargained for.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 6 - Words: 74,018 - Reviews: 118 - Favs: 635 - Follows: 925 - Updated: 10/25/2018 - Published: 4/30/2017 - Master Chief/John-117, Cortana, Shepard (F)
Merged Galaxy Part 1: Tenuous Pacts by Slipspace Anomaly reviews
Nations collide as 2 alternate versions of the Milky Way Galaxy are joined into 1. As members of the SGC and the UNSC struggle to establish peaceful relations, a new threat emerges. One that includes new enemies from each of their pasts. Co-written with Jon Harper.
Crossover - Stargate: SG-1 & Halo - Rated: T - English - Chapters: 21 - Words: 164,926 - Reviews: 201 - Favs: 278 - Follows: 377 - Updated: 10/8/2018 - Published: 1/30/2017 - H. Maybourne, OC, Master Chief/John-117, C. Halsey
Gravity by DONOVAN94 reviews
Elaine Cousland's duty is done: the Archdemon is dead. Where she once thought to join her family at the Maker's side, instead she awakes on a strange world. Here, an evil both new and familiar has come, and as a Warden it is her responsibility to vanquish it. At any cost. She will join the strange ship that sails the stars, the Normandy, and defeat the Collectors. Once and for all.
Crossover - Mass Effect & Dragon Age - Rated: M - English - Adventure/Romance - Chapters: 43 - Words: 287,177 - Reviews: 441 - Favs: 318 - Follows: 389 - Updated: 10/8/2018 - Published: 8/15/2017 - [Garrus V., Cousland] Tali'Zorah, Shepard (M) - Complete
Harry Stark (The Rewrite) by mugglemomto1 reviews
Rewrite of my original story, Harry Stark. Takes place before Iron Man and before Harry Potter, but will mesh the two series together. What happens when Tony finds out he has a son, but not just any son, but the BWL? What happens when Harry Potter, a lonely orphan meets a man who never wanted to be dad? T for now. Rating may change as I get into more writing again.
Crossover - Harry Potter & Avengers - Rated: T - English - Drama/Family - Chapters: 6 - Words: 17,869 - Reviews: 83 - Favs: 453 - Follows: 687 - Updated: 9/30/2018 - Published: 3/4/2018
The Eternal Devil by megatronus89 reviews
The greatest trick the devil ever played was to convinced the world he never existed. But what happens when the devil saves an old friend John Wick and travels to the end of the world to... Roanapur. Meet Rokuro Okajima also known as the Eien Akuma:the Eternal Devil. (Badass Assassin Rock). Roanapur is about to become home to the devil himself.
Crossover - Black Lagoon & John Wick - Rated: M - English - Crime/Humor - Chapters: 1 - Words: 7,124 - Reviews: 8 - Favs: 74 - Follows: 81 - Published: 9/18/2018 - Rock, Revy, Balalaika
Warslayer by JohnDeath reviews
The Halloween episode had a different result, and from it arose champions that will strike fear into all the forces of evil that threaten humanity. Rated M for strong language and violence.
Crossover - Buffy: The Vampire Slayer & Warhammer - Rated: M - English - Adventure/Sci-Fi - Chapters: 44 - Words: 162,072 - Reviews: 1109 - Favs: 1,682 - Follows: 1,769 - Updated: 9/15/2018 - Published: 11/5/2010
Harry Potter and the Magical Tok'ra by HufflepuffBadger1978 reviews
Summary: Harry Potter narrowly manages to escape his wicked uncle by magically teleporting himself to another world. Harry becomes host to a Tok'ra symbiote named Einar.
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - English - Adventure/Friendship - Chapters: 4 - Words: 16,266 - Reviews: 280 - Favs: 1,098 - Follows: 1,738 - Updated: 9/13/2018 - Published: 11/10/2016 - S. Carter, Harry P., Hermione G., N. Tonks
Azuveya: Fury Oh Fury by Kira Kyuu reviews
Aloe Potter (fem!HP) wasn't sure how she got here - 'here' being in what seemed to be a young girl's body, four-hundred-and-some-odd years into the future, and at risk of being killed by an alien empire, but it seemed like something her luck would come up with.
Crossover - Harry Potter & Halo - Rated: T - English - Chapters: 17 - Words: 24,632 - Reviews: 213 - Favs: 582 - Follows: 803 - Updated: 9/3/2018 - Published: 8/24/2014 - Harry P.
A Paragon of Magic by Alex Blackclaw reviews
Shepard finally did it. She had destroyed the Reapers, just as she promised she would. However, things didn't go according to plan. Instead of dying or maybe falling to Earth with the wreckage of the Crucible, she instead finds herself thrown into a life she never lived, facing things that were only fairy tales to her. Join Morgana Lilian Shepard as she takes on a whole new world!
Crossover - Harry Potter & Mass Effect - Rated: T - English - Adventure/Romance - Chapters: 5 - Words: 41,282 - Reviews: 95 - Favs: 218 - Follows: 342 - Updated: 8/30/2018 - Published: 7/15/2018 - [Shepard (F), Liara T'Soni]
Noctilucent by You talk like a dentist reviews
Is he cursed? It seems like no matter what Wick does, he can't seem to shake off the shadow his past casts over his life. Always a fight, always corpses littered around him. And now he has his own little shadow, Harry, a boy with a cursed luck of his own.
Crossover - Harry Potter & John Wick - Rated: T - English - Hurt/Comfort/Adventure - Chapters: 6 - Words: 9,367 - Reviews: 153 - Favs: 604 - Follows: 862 - Updated: 8/17/2018 - Published: 1/7/2017 - Harry P.
Harry Potter Meets the Starks and the Gods with Them by PuffsOfPygmys reviews
Ever wondered how Tony Stark would have been Like if he had an older brother, adopted his niece, and met Loki before becoming Iron Man? Or how Hogwarts would be for Harry Potter if a billionaire took him off Hagrid's hands when he first entered Gringotts and met Severus Snape and the Malfoy's before he could be poisoned against all Slytherins? Add in adventure and love.
Crossover - Harry Potter & Avengers - Rated: M - English - Romance/Adventure - Chapters: 28 - Words: 65,481 - Reviews: 168 - Favs: 757 - Follows: 832 - Updated: 8/13/2018 - Published: 3/4/2018 - Complete
The Spirit of Humanity by Kazlin reviews
After decades of ponderous travel through space the UNSC Spirit of Fire stumbles across the drifting tomb of Humanities greatest hero. Within the ship they find the means of possibly making it home, but to get there they will have to make alliances that could upend the balance of power in the Galaxy and change everything the Council races thought true.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 4 - Words: 16,964 - Reviews: 148 - Favs: 491 - Follows: 848 - Updated: 8/3/2018 - Published: 5/24/2018
X-COM Ad Infinitum by Xphonias reviews
X-Com, Mass Effect Crossover, Space Engineers elements. As Humanity pushes off the Ethereal threat a cycle continues, while a vast, unknown Galactic Civilization lives right upon its borders, bringing with it possible friends, or foes.
Crossover - X-Com & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 6 - Words: 5,422 - Reviews: 11 - Favs: 63 - Follows: 93 - Updated: 7/28/2018 - Published: 3/25/2018
Flying Solo by fakeyourdecaf reviews
After stumbling into an alchemic experiment whilst on a mission, Ed is sent through the Gate and into a foreign world of magic and which defies everything he understands about alchemy and the laws equivalent exchange. Unable to understand the people, technology and the language Ed stumbles through London in search of a way back home..until the Knight Bus turns up.
Crossover - Fullmetal Alchemist & Harry Potter - Rated: T - English - Adventure - Chapters: 8 - Words: 34,817 - Reviews: 66 - Favs: 176 - Follows: 289 - Updated: 7/17/2018 - Published: 4/9/2017 - Harry P., Hermione G., Alphonse E., Edward E.
Returning Races by WillProbablyWork reviews
Thought long gone for millennia, the missing races that have shaped multiple Galaxies are returning, can the newly raised Fifth Race survive it? SG-1, Atlantis, and Universe under one roof as well as some OC's. Starting off about mid season 1 SGU, Won't be changing anything about SGU.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Sci-Fi/Adventure - Chapters: 11 - Words: 72,613 - Reviews: 47 - Favs: 73 - Follows: 111 - Updated: 7/8/2018 - Published: 2/17/2018
Expansion Edition by Danen5 reviews
Its a game. Or is it? Turians get to welcome the denizens of a Stellaris based civilization that is hell bent on the extermination of all aliens, well except for some. Of course the Turians fired first, Galactic laws and all that bullshit. In return they are faced with an enemy that doesn't play fair. Warning: HFY. Read at your own peril AU Fic. Rated T for ridiculous explanations.
Crossover - Mass Effect & Stellaris - Rated: T - English - Sci-Fi/Humor - Chapters: 7 - Words: 70,549 - Reviews: 91 - Favs: 230 - Follows: 312 - Updated: 7/6/2018 - Published: 4/27/2017
The Fall and Rise of the Alteran by Nichiwwa reviews
In another universe their choice may have been to Ascend or perhaps return to Terra and start afresh. So with that train of thought the most renowned scientists still among them came up with a daring plan; escape to another universe. Or the story where the Alteran finally grew a backbone.
Crossover - Stargate: Atlantis & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 2 - Words: 8,639 - Reviews: 44 - Favs: 198 - Follows: 307 - Updated: 7/2/2018 - Published: 6/30/2018 - U. Wrex, Harbinger, Councilor Tevos, Aethyta
The Butterfly Effect: And the Chamber of Secrets by UnchartedConstellations reviews
When Edward and Alphonse Elric are sent to another world with little to no instruction, they have to find a way to survive. After becoming a Hogwarts professor, will Edward figure out what's going on? Or will their strange effect on this world, planned or not, change everything as they know it. Rated: T for occasional harsh language and darker themes
Crossover - Harry Potter & Fullmetal Alchemist - Rated: T - English - Adventure/Mystery - Chapters: 17 - Words: 57,013 - Reviews: 78 - Favs: 246 - Follows: 148 - Published: 6/21/2018 - Luna L., Fred W., Alphonse E., Edward E. - Complete
A Study in Alchemy by SylvanDaggers reviews
Edward Elric would never become a teacher– never mind teach at a school for magic of all things. So how did he end up at Hogwarts? With a pair of mischievous twins, a murderer on the loose, and an alchemy class to teach, will the Fullmetal Alchemist be able to survive his year at Hogwarts?
Crossover - Harry Potter & Fullmetal Alchemist - Rated: T - English - Adventure - Chapters: 14 - Words: 61,153 - Reviews: 370 - Favs: 860 - Follows: 1,221 - Updated: 6/21/2018 - Published: 6/6/2017 - Remus L., George W., Fred W., Edward E.
Tale of an Imperium by Phoenix of Rome reviews
The Imperium has risen from a minor Galactic power to an Interstellar powerhouse, great megastructures and fleets dot the galaxy as the Imperium grows consistently, but in the outer rim of the Galaxy, 10 Gateways are found, where do they lead? What adventures await the Imperium? And why has their god descended? (All docs link reposted on Profile)
Crossover - Mass Effect & Stellaris - Rated: T - English - Chapters: 8 - Words: 27,190 - Reviews: 17 - Favs: 100 - Follows: 126 - Updated: 6/12/2018 - Published: 5/21/2018
You Can't Keep An Old Dog Down by Lady FoxFire reviews
HP-SG1 Magic can make anything possible and when you mix in SG1 it's a guarantee that the impossible will happen.
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - English - Drama/Humor - Chapters: 18 - Words: 78,161 - Reviews: 937 - Favs: 2,268 - Follows: 3,357 - Updated: 6/10/2018 - Published: 9/23/2007 - J. O'Neill, Harry P.
The Human War by Generatedname reviews
The Citadel Council is a peaceful conglomerate of races, blissfully unaware of the horrors that lurk beyond their space. Humanity, meanwhile, is a race that has fought against these alien horrors ever since they made contact. What will happen when the two societies meet? Will peace follow war? Or is the Citadel Council doomed to fall to humanity? Rewrite of When Civilizations Meet.
Crossover - X-Com & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 13 - Words: 138,222 - Reviews: 651 - Favs: 1,650 - Follows: 2,258 - Updated: 5/30/2018 - Published: 3/29/2016
Same Stuff, Different Universe by nicomnovillo reviews
An Imperial Storm Trooper finds himself thrown into a Universe different of his own, due to a cataclysmic event. Action, adventure, love and humor will ensue, as the titular character waltz through a Milky Way different than what he knows and tries (failing miserably) to have a somewhat normal life. Mass Effect-Warhammer crossover.
Crossover - Warhammer & Mass Effect - Rated: M - English - Romance/Adventure - Chapters: 8 - Words: 47,310 - Reviews: 33 - Favs: 56 - Follows: 93 - Updated: 5/20/2018 - Published: 3/18/2018
Long Black Road by FrankLeroux reviews
The one that "you send to kill the f***ing boogeyman" wakes up in the future to face the ultimate boogeyman. Somebody PLEASE get this man...a gun! Rated M for language, for sexual situations, and for John Wick shooting lots of things in the face. Set in the same Mass Effect universe as my other story (Tango) but you don't have to read that one to read this one.
Crossover - Mass Effect & John Wick - Rated: M - English - Sci-Fi/Crime - Chapters: 25 - Words: 136,505 - Reviews: 419 - Favs: 1,362 - Follows: 1,416 - Updated: 5/14/2018 - Published: 1/26/2017 - Complete
Davion & Davion (Deceased) by drakensis reviews
When Prince John Davion dreamed of a distant descendant, he never expected to meet the ghost of that man outside his bathroom the next day. What Hanse Davion has to tell him is a nightmare. Together the two princes, man and ghost, are faced with a nigh-impossible challenge: save the Star League or see billions die in the fires of the Succession Wars.
Mechwarrior/Battletech - Rated: M - English - Sci-Fi/Drama - Chapters: 59 - Words: 348,485 - Reviews: 62 - Favs: 171 - Follows: 118 - Updated: 5/1/2018 - Published: 11/26/2017 - Complete
Harry Potter and the Extraterrestrial Combat Unit by defiasstone2 reviews
Harry Potter, sick of the Wizarding world and mourning the loss of his closest companions, enacts a ritual not completed since the time of Merlin. His aim is to get away from the pain and bitter memories of his old life, and with the appearance of aliens and flurries of green plasma death, in this new world he will not be short of distractions... Based on X-Com: Enemy Unknown
Crossover - Harry Potter & X-Com - Rated: M - English - Chapters: 10 - Words: 44,175 - Reviews: 141 - Favs: 561 - Follows: 794 - Updated: 4/30/2018 - Published: 1/6/2016
Harry Potter's most excellent adventure by wolfd890 reviews
The boy who lived simply wanted to take a break from being everyone's Hero. Who'd have thought that being kidnapped by Jaffa out of some lousy Diner would do the trick? Poor SG1. They have no idea how far down the rabbit hole goes. Harry Potter/Stargate Crossover, eventual AU
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - English - Humor/Adventure - Chapters: 20 - Words: 123,879 - Reviews: 855 - Favs: 2,609 - Follows: 3,483 - Updated: 4/10/2018 - Published: 11/16/2015 - J. O'Neill, Vala, Harry P.
Harry Potter and the Lost Ancients by warugaki reviews
AU After the final battle the Hallows give Harry dreams on how to fully unite them and it turns out that they are a hidden and updated repository of knowledge for the Lantean people. How will he lead the wizarding world to the stars? under rewrite...
Crossover - Harry Potter & Stargate: Atlantis - Rated: M - English - Sci-Fi - Chapters: 18 - Words: 107,290 - Reviews: 374 - Favs: 1,140 - Follows: 1,490 - Updated: 2/19/2018 - Published: 8/12/2016 - Harry P., Parvati P., Padma P.
Day of the Falcon by nomuse reviews
Controversial adventurer-archaeologist Lara Croft crosses paths with the top-secret Stargate project. Their quarry; an ancient parasite who has been playing god with Earth's history - and has designs on its future.
Crossover - Stargate: SG-1 & Tomb Raider - Rated: T - English - Adventure - Chapters: 28 - Words: 161,828 - Reviews: 73 - Favs: 154 - Follows: 254 - Updated: 1/29/2018 - Published: 7/8/2014 - S. Carter, D. Jackson, Lara Croft
World of Warcraft: Fall of Dawn by Stellar Castaway reviews
After the destruction of the Ark and the defeat of both the Covenant and the Flood, the Master Chief and Cortana now find themselves on the mysterious world of Azeroth. How will the races of the Alliance and the Horde handle the arrival of a Spartan and his A.I. companion from beyond the stars...?
Crossover - Warcraft & Halo - Rated: M - English - Sci-Fi/Adventure - Chapters: 7 - Words: 63,442 - Reviews: 180 - Favs: 625 - Follows: 738 - Updated: 1/12/2018 - Published: 10/19/2012 - Night Elf, Master Chief/John-117
Psi Effect by Cap'n Chryssalid reviews
A fun-loving asari mercenary finds herself a little in over her head when she ends up abducted by terrifying aliens from beyond the galactic frontier. These asari-like creatures call themselves 'humans.' They seem to be secretly nosing about on the borders of known space, acting through proxies, conducting covert operations, and they've got a deal for an enterprising asari...
Crossover - X-Com & Mass Effect - Rated: T - English - Humor/Sci-Fi - Chapters: 43 - Words: 387,570 - Reviews: 1367 - Favs: 3,349 - Follows: 3,880 - Updated: 1/2/2018 - Published: 7/19/2014 - U. Wrex, Daro'Xen, Shepard (F), OC
Harry Potter: My Life Is My Own by Sashian reviews
Harry has a great memory, photographic even. He remembers everything even the day he was born. Every sight, sound, smell or touch he remembers with crystal clarity and he has power from the moment he is born. And whats up with Hedwig? All chapters edited for spelling, grammar, and some content. You may want to re-read it.
Harry Potter - Rated: M - English - Adventure/Drama - Chapters: 26 - Words: 182,168 - Reviews: 2889 - Favs: 9,950 - Follows: 11,326 - Updated: 12/31/2017 - Published: 8/4/2009 - Harry P.
A Glimmer of Hope by The Hidden Sith reviews
It's been five years since disclosure and the City of Atlantis breathes new life with thousands inhabiting her. When a subspace anomaly propels the city and her stalwart defenders through time and space, they discover a galaxy in turmoil and humanity in peril once again. With no way back, they must establish a new home for humanity and uncover the mystery behind Andromeda. SG/ME
Crossover - Stargate: Atlantis & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 4 - Words: 17,602 - Reviews: 53 - Favs: 219 - Follows: 353 - Updated: 12/31/2017 - Published: 5/14/2017
Harry Potter - Alteran - Part 2 by Sashian reviews
The rebirth of an entire race and society is a tall order when this and other galaxies are not safe. What is Harry to do? What he does best, jump in feet first. Here is Part 2 of the Harry Potter/Stargate saga. Rating T for some language and mentions of nudity later on. Pairings HP/HG/LL/other
Crossover - Stargate: SG-1 & Harry Potter - Rated: M - English - Chapters: 6 - Words: 42,949 - Reviews: 395 - Favs: 1,833 - Follows: 2,471 - Updated: 11/15/2017 - Published: 9/18/2017
Harry Potter - Alteran by Sashian reviews
The rebirth of an entire race and society is a tall order when this and other galaxies are not safe. What is Harry to do? What he does best, jump in feet first. Rating T for some language and mentions of nudity later on. Pairings HP/HG/LL/other
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - English - Sci-Fi/Adventure - Chapters: 25 - Words: 196,908 - Reviews: 1489 - Favs: 2,920 - Follows: 2,944 - Updated: 9/18/2017 - Published: 2/16/2017 - Harry P., Hermione G., Luna L. - Complete
Tara Sheppard by fmfan1980 reviews
What if Tara was Major John Sheppard's half sister? Just a thought I had while writing one of my chapters. Takes place after the Siege of Atlantis, and during 'Seeing Red' of BtVS. I know timelines don't match which is why this is AU. *Chapter 30 has been edited.*
Crossover - Buffy: The Vampire Slayer & Stargate: Atlantis - Rated: T - English - Sci-Fi - Chapters: 66 - Words: 225,873 - Reviews: 229 - Favs: 149 - Follows: 224 - Updated: 7/21/2017 - Published: 7/11/2015 - [Tara M., Willow R.] Buffy S., John S.
Vigil by Peptuck reviews
Mankind has survived its crucible, and while scarred and changed by the Ethereals, they advance into the cosmos. The galaxy beyond is a place of wonder and terror, of wealth and strife. Amid the threats and opportunities, both within and without, XCOM remains vigilant. Mass Effect/XCOM/Eclipse Phase/FEAR/Destiny fusion.
Crossover - X-Com & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 18 - Words: 170,804 - Reviews: 427 - Favs: 955 - Follows: 1,048 - Updated: 9/14/2016 - Published: 9/2/2014
Harry Potter and the Alien Reality by Maestro Hazard reviews
In the graveyard, Voldemort banished Harry to a new universe. Stranded in a reality of technology, adventure, and snake-like aliens that are bent on galactic conquest, Harry will join with a new group to hopefully find a way home. A group called SG-1.
Crossover - Stargate: SG-1 & Harry Potter - Rated: T - English - Chapters: 12 - Words: 146,773 - Reviews: 1041 - Favs: 2,770 - Follows: 3,422 - Updated: 7/21/2016 - Published: 11/6/2010 - J. O'Neill, Harry P.
Red Alert: A New Day Dawns by Tallman7 reviews
Shepard defeated Sovereign, but it cost him his Spectre status, and nearly his life. Will defeating the Reapers cost him even more? Can the Alliance build a force to defeat the greatest menace the galaxy has ever known? What will happen when Yuri and Cerberus meet? Come and find out in the sequel to Red Alert: The Dawn of Man!
Crossover - Command & Conquer & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 12 - Words: 64,262 - Reviews: 27 - Favs: 83 - Follows: 103 - Updated: 3/3/2015 - Published: 5/10/2014 - Shepard (M), Tali'Zorah
Red Alert: The Dawn of Man - Redux by Tallman7 reviews
The rewrite of Red Alert: The Dawn of Man. What's new? What's old? The only way to know is to read and find out. C&C: Red Alert and Mass Effect crossover.
Crossover - Command & Conquer & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 14 - Words: 75,353 - Reviews: 52 - Favs: 183 - Follows: 216 - Updated: 11/5/2014 - Published: 5/11/2014 - Shepard (M), Tali'Zorah
Renegade by Peptuck reviews
The year: 2183. An attack on the Global Defense Initiative colony of Eden Prime threatens to ignite war between GDI and the Citadel, and only one woman can keep the peace, track down the attackers, and expose the true threat to the galaxy. Alt.Universe
Crossover - Command & Conquer & Mass Effect - Rated: T - English - Drama/Sci-Fi - Chapters: 17 - Words: 164,661 - Reviews: 542 - Favs: 1,129 - Follows: 1,111 - Updated: 1/11/2014 - Published: 3/28/2010 - Kane, Shepard (F)
Harry Potter and the Next Great Adventure by AmateurFanfic reviews
The war is over, and the sheep of the wizarding world have once again begun to turn their backs on him. In hopes of avoiding the hostility of the public and the greed of the Ministry, Harry embarks on a journey that will take him to a new life. Repost ch
Crossover - Stargate: SG-1 & Harry Potter - Rated: M - English - Adventure/Sci-Fi - Chapters: 14 - Words: 121,781 - Reviews: 1182 - Favs: 3,161 - Follows: 3,639 - Updated: 5/13/2013 - Published: 9/9/2009 - S. Carter, Harry P.