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by So-Pro Warrior reviews
Commander Shepard and his team have gathered together the races of their Galaxy in an effort to defeat the Reapers. But is it enough? When the Commander and his team come across a strange woman they find out that if they are to truly defeat the Reapers once and for all. They will need all the help they can get. But not from their Universe. Multiverse Crossover!
Crossover - Mass Effect & Halo - Rated: T - English - Adventure/Sci-Fi - Chapters: 24 - Words: 563,715 - Reviews: 303 - Favs: 173 - Follows: 172 - Updated: 13h - Published: 6/21/2013 - Master Chief/John-117, Shepard (M)
Star Effect: Deep Space 9
by NYKevin reviews
The Defiant enters the wormhole and emerges from a mass relay orbiting the Citadel. Takes place during ME2 and ME3. The Star Trek half looks like season 5 or 6 but isn't specified. Also has Fem!Shep/Garrus, but mostly off-screen, and not really the focus of the fic. T for language. Updates have become irregular lately.
Crossover - StarTrek: Deep Space Nine & Mass Effect - Rated: T - English - Drama/Humor - Chapters: 45 - Words: 86,547 - Reviews: 74 - Favs: 97 - Follows: 148 - Updated: 3/13 - Published: 9/14/2013 - E. Garak, Nog, Shepard (F), Joker
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: 82 - Words: 822,355 - Reviews: 2264 - Favs: 2,240 - Follows: 2,317 - Updated: 3/10 - Published: 3/12/2012
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: 35 - Words: 353,072 - Reviews: 1241 - Favs: 1,840 - Follows: 2,325 - Updated: 2/28 - Published: 3/27/2011 - Master Chief/John-117, Tali'Zorah, Miranda L., Shepard (M)
Battlestar Galactica: The Guiding Fire
by GunnyStacker reviews
199 days after the Cylon attack on the 12 Colonies, a chance encounter brings the Colonial Fleet in contact with the UNSC Spirit of Fire after the events of the Forerunner Shield World. Can they work together to reach UNSC space before the Cylons wipe them all out and manage to overcome the odds without killing each other first?
Crossover - Halo & Battlestar Galactica: 2003 - Rated: T - English - Sci-Fi/Drama - Chapters: 13 - Words: 157,922 - Reviews: 441 - Favs: 607 - Follows: 826 - Updated: 2/2 - Published: 11/13/2016 - J. Cutter, Serina, W. Adama, K. Thrace/Starbuck
The Infinity Effect
by creamofwheat2311 reviews
After discovering a Precursor artifact, the UNSC Infinity and the Sangheili Shadow of Intent are transported to a universe unlike anything they have ever seen, and forced into a war against a foe they never could have imagined: the Reapers. Alliances are founded, friendships are formed, and decisions are made that will change both galaxies forever.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 35 - Words: 318,138 - Reviews: 2696 - Favs: 3,177 - Follows: 3,848 - Updated: 2/2 - Published: 10/9/2013 - Master Chief/John-117, T. Lasky, Admiral Hackett, Shepard (M)
Origins of Humanity
by Aussie reviews
AU SG from mid Season 2. What would happen if SG1 gated to Caprica, three years before the Cylon Attack on the Colonies. What would happen if the SGC had access to the Colonies' industrial might early on in their fight against the Goa'uld!
Crossover - Stargate: SG-1 & Battlestar Galactica: 2003 - Rated: T - English - Sci-Fi - Chapters: 23 - Words: 91,451 - Reviews: 259 - Favs: 300 - Follows: 405 - Updated: 1/24 - Published: 1/8/2007
A Spartan in Westeros (A Song of Ice and Fire X Halo Crossover)
by Agailius reviews
When the Forward Unto Dawn lands in the North, it sets the stage for untold repercussions which will ripple throughout the whole of Westeros. With civil war threatening to tear the land apart, and an entirely more dire threat arising beyond the Wall, John and Cortana take it upon themselves to again protect the whole of mankind; from both it's own demons... and those beyond.
Crossover - Halo & A song of Ice and Fire - Rated: M - English - Sci-Fi/Fantasy - Chapters: 19 - Words: 104,174 - Reviews: 1154 - Favs: 2,583 - Follows: 3,094 - Updated: 12/28/2017 - Published: 6/3/2014 - Master Chief/John-117, Cortana, Jon S., Eddard S./Ned
Stargate:The Legend of the Arcturus Maximus Primus
by Alpha Omega Protocol reviews
Alternate universe of Stargate Atlantis. This is a story about my 3d ship I made based on the Ancients! This first story is going to be the cross over from Stargate to Star Trek. Others universe will come later.
Crossover - StarTrek: Other & Stargate: Atlantis - Rated: M - English - Sci-Fi - Chapters: 34 - Words: 207,952 - Reviews: 95 - Favs: 204 - Follows: 210 - Updated: 12/25/2017 - Published: 11/11/2009 - John S.
Mass Effect: The Hopeless War
by ProfFartBurger reviews
A/U- In the 21st century, the Batarian Hegemony discovers a beautifully violent species known as 'Humans'. After deciding to enslave the entire race, and turn them into their own personal slave warriors, the so-called Masters of War must go against the Makers of Slaves. But is it truly possible to combat an alien threat, when your own species can barely even leave its only home?
Mass Effect - Rated: M - English - Sci-Fi - Chapters: 21 - Words: 150,917 - Reviews: 737 - Favs: 748 - Follows: 846 - Updated: 6/11/2017 - Published: 5/11/2013 - OC
Stargate: The Twelve Colonies
by Seraphin2011 reviews
The Cylons are preparing to attack the Colonies, and they are determined to end all human existence once and for all. But the Cylons don't know the Terrans have learned about their attack, and they will not stay idle and let the Cylons commit such atrocity, not if they can help it. This is a spin-off from the other story I'm writing, splitting around the half of the second book.
Crossover - Stargate: SG-1 & Battlestar Galactica: 2003 - Rated: T - English - Sci-Fi/Adventure - Chapters: 27 - Words: 202,072 - Reviews: 756 - Favs: 651 - Follows: 855 - Updated: 5/23/2017 - Published: 5/21/2013
No More Gallifreys
by keita52 reviews
The Eleventh Doctor gets a call from the Illusive Man asking for his help against the Reapers. Having no idea what the crazy man was talking about, he nonetheless decides to investigate. The Reapers are exactly the sort of thing he'd like to stop - but can he work with a soldier like Shepard?
Crossover - Doctor Who & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 27 - Words: 76,352 - Reviews: 211 - Favs: 368 - Follows: 529 - Updated: 5/3/2017 - Published: 12/14/2013 - 11th Doctor, Shepard (F), Tali'Zorah, Samara
by Chaoswind2 reviews
First part of a three part project: The Great war was finally over, with the Covenant and the Flood defeated there were no enemies left to fight, mankind could finally take a breath and enjoy the peace they had earned after twenty seven years of a war that had claimed twenty three billion lives. Or so they hoped. But the galaxy has never been that kind.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 5 - Words: 39,222 - Reviews: 63 - Favs: 165 - Follows: 213 - Updated: 5/26/2016 - Published: 6/20/2013 - Master Chief/John-117, Cortana
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: 3311 - Favs: 4,634 - Follows: 5,491 - 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: 392 - Favs: 833 - Follows: 958 - Updated: 5/10/2016 - Published: 2/12/2012 - Shepard (F), Garrus V.
by doctor chocolate thunder reviews
The ORI have been defeated and Atlantis is in fast action on mars. Earth is aware of the stargate now and has begun to embrace its roll. Meanwhile in Pegasus New Lantea is also in full swing fighting the Wraith, But daniel and SG-1 have a new mission. A mission that could change the pegasus galaxy and the whole universe. both stargates bsg and The matrix will get time here
Crossover - Stargate: SG-1 & Battlestar Galactica: 2003 - Rated: K+ - English - Sci-Fi/Suspense - Chapters: 12 - Words: 89,292 - Reviews: 85 - Favs: 165 - Follows: 176 - Updated: 4/21/2016 - Published: 2/28/2013 - D. Jackson - Complete
Alternate Past, Uncertain Future Mk II
by Follower38 reviews
Co-written with aDarkOne History, a single event, can alter so much, let alone two. The San'Shyum are no more. The Krogan Empire stands strong. Humanity is now a giant among the stars. With three Galactic Superpowers in play, will an encounter see a new Golden Age, or an Era of War? (Chapters 1-12 being rewritten)
Crossover - Halo & Mass Effect - Rated: T - English - Adventure - Chapters: 32 - Words: 279,514 - Reviews: 715 - Favs: 645 - Follows: 770 - Updated: 3/10/2016 - Published: 8/28/2012
by Solaris242 reviews
Humanity never developed FTL. The Prothean archives contained no technology, no Element Zero, just a warning. Isolated from the rest of the galaxy for two thousand years, restricted to their only system, how will humanity have changed when they first meet the Turians? AU, alternate history of humanity and First Contact.
Mass Effect - Rated: T - English - Sci-Fi - Chapters: 18 - Words: 40,604 - Reviews: 1992 - Favs: 5,893 - Follows: 6,883 - Updated: 3/1/2016 - Published: 5/7/2013
What the frell did you do this time Erpman?
by The Sithspawn reviews
While testing Modifications to the Farscape 1 John and Aeryn are sucked into a Parallel s now up to John Crichton to get them back to Moya and their own dimension.
Crossover - X-overs & Farscape - Rated: T - English - Chapters: 43 - Words: 146,812 - Reviews: 1051 - Favs: 398 - Follows: 430 - Updated: 3/1/2016 - Published: 8/19/2004 - J. Crichton, Aeryn S.
HaloMass Effect: Ruptured Universe (Cancelled)
by JediSpectre177 reviews
Multiple crossovers AvP,RvB, JC's Avatar, Star wars, Halo, Mass Effect and more. Authors 2nd apology and Cancellation on chapter 14
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 15 - Words: 160,561 - Reviews: 665 - Favs: 460 - Follows: 465 - Updated: 1/20/2016 - Published: 4/16/2012 - Master Chief/John-117
The Fighting Spirit
by smart grid reviews
Spartans never die, they say. When Jorge gave his life to save his home planet of Reach, he never imagined that he would survive. But now he finds himself neck deep in the troubles of another universe; he will do what he has been trained to do, what all Spartans do best: fight.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure - Chapters: 39 - Words: 176,016 - Reviews: 730 - Favs: 1,080 - Follows: 1,156 - Updated: 1/16/2016 - Published: 12/1/2011 - Jorge-052/Noble Five, Shepard (F) - Complete
by Sable Cold reviews
The Tau'ri have a part to play in things to come.
Crossover - Stargate: SG-1 & Battlestar Galactica: 2003 - Rated: T - English - Chapters: 19 - Words: 77,486 - Reviews: 338 - Favs: 668 - Follows: 832 - Updated: 12/31/2015 - Published: 8/8/2010 - Complete
The Alliance Wars
by vliegenvanger reviews
this is a general continuation of BSG 16, Under Siege and TFS Ticonderoga. I have changed several other things. although this story is categorized as crossover, it will mainly deal with the SG side and a bit of BSG. now includes the Ori
Crossover - Stargate: Atlantis & Battlestar Galactica: 2003 - Rated: T - English - Sci-Fi - Chapters: 21 - Words: 233,843 - Reviews: 150 - Favs: 152 - Follows: 184 - Updated: 12/5/2015 - Published: 3/31/2010
The First Movement of the Odyssey
by Crazy-88 reviews
"You are the Fifth Race. Your role is clear. If there is any hope in preserving the future, it lies with you and your people" Because all it takes is one ship. Perhaps in the wrong place... But unquestionably, at the right time.
Crossover - Stargate: SG-1 & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 8 - Words: 206,461 - Reviews: 262 - Favs: 794 - Follows: 891 - Updated: 12/1/2015 - Published: 7/15/2013
Loki's Guide to Life on Earth
by Kita42 reviews
After trying to take over Midgard and being stopped by the expanded Avengers team, Loki has been forced to Earth, powerless, to learn the error of his ways. The Avengers are charged with teaching him. So of course, nothing could possibly go wrong. Also including Doctor Who, Torchwood, Supernatural and others.
Crossover - Sherlock & Avengers - Rated: T - English - Humor/Adventure - Chapters: 15 - Words: 42,074 - Reviews: 75 - Favs: 91 - Follows: 139 - Updated: 11/6/2015 - Published: 7/12/2012
Halo The Evolution Continues
by UNSpaceCommand reviews
First time Crossover. Constructive Critic welcome. Enjoy and pls Review. Chapter 27 is up. A long lost ship is returning home but it seems fate have a decision to make a mess of things. Looking for Beta Reader. On Haitus
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 27 - Words: 56,469 - Reviews: 321 - Favs: 448 - Follows: 513 - Updated: 10/14/2015 - Published: 9/22/2011
Return of the Avengers
by Dr Matthattan reviews
A new shadow falls upon Middle-earth. The Free Peoples and the Avengers join forces once more to stand against a darkness that threatens to engulf all who oppose it. Sequel to 'Avengers of the Ring'.
Crossover - Lord of the Rings & Avengers - Rated: T - English - Adventure/Humor - Chapters: 33 - Words: 199,912 - Reviews: 421 - Favs: 401 - Follows: 346 - Updated: 9/24/2015 - Published: 3/22/2014 - Complete
The Heavens Shall Tremble
by Full-Paragon reviews
Sequel to And the Meek Shall Inherit the Galaxy. On hiatus while author recovers from medical emergency.
Mass Effect - Rated: T - English - Sci-Fi/Horror - Chapters: 23 - Words: 95,248 - Reviews: 929 - Favs: 1,285 - Follows: 1,502 - Updated: 9/21/2015 - Published: 10/25/2013 - Garrus V., Liara T'Soni, Tali'Zorah, Shepard (M)
Land of Heroes
by Harbinger Of Kaos reviews
This is my attempt at Halo cross, please respect the fact that i am not entirely familiar with this universe, in which universe Marvel or DC it begins in is entirely up to me and you, so with that said lets begin, there will be strong language and gore.
Crossover - Marvel & Halo - Rated: M - English - Adventure/Sci-Fi - Chapters: 16 - Words: 215,322 - Reviews: 663 - Favs: 1,066 - Follows: 992 - Updated: 8/20/2015 - Published: 12/15/2010 - Master Chief/John-117
Conquerors they Rise
by JoeTheHighlord reviews
The year is 2650, nearly a century since the end of the Great War and the fall of the Covenant Hegemony. In that time great advances have been made in both technology and society, and the new government of the New Species Alliance enters a golden age. But, there are dark stirrings out in the vastness of space and soon Conquerors must rise again from the ashes of war.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Suspense - Chapters: 13 - Words: 74,202 - Reviews: 421 - Favs: 681 - Follows: 863 - Updated: 7/2/2015 - Published: 7/16/2013 - T. Hood
Vanguard: In at the Deep End
by USSExplorer reviews
The Vanguard finds itself flung into another galaxy that faces the threat of being overrun by a seemingly unstoppable force. With a massively damaged ship, and little time; can the Vanguard make a difference in determining the fate of a galaxy?
Crossover - StarTrek: Other & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 48 - Words: 229,314 - Reviews: 320 - Favs: 304 - Follows: 405 - Updated: 5/31/2015 - Published: 4/26/2012 - Shepard (F)
by Andrithir reviews
There are stories about them, myths and legends of once majestic species overseeing the galaxy and exploring into the space that lay beyond. There were stories about them, tales of faded past. Humanity's missing link. (Rewrite Chapters 1 to 3 now posted) COMPLETED. Rewrites are on hiatus.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 67 - Words: 328,897 - Reviews: 1620 - Favs: 1,331 - Follows: 1,251 - Updated: 2/20/2015 - Published: 10/8/2011 - Master Chief/John-117, Shepard (F) - Complete
by edclancer001 reviews
Alternate Universe to the canon Mass Effect Universe. This story takes place in "our" timeline, as such, Mass Effect games and other Mass Effect works exist and are known by humanity. How has humanity moved to prepare the galaxy in the 70 years since the discovery that fiction had become fact? Will eventually reach the Mass Effect time period.
Mass Effect - Rated: M - English - Sci-Fi - Chapters: 17 - Words: 77,485 - Reviews: 343 - Favs: 932 - Follows: 1,156 - Updated: 2/8/2015 - Published: 11/2/2013 - Shepard (M)
The Onyx Stars
by The Hidden Sith reviews
A lost ship, a lost warrior, and a lost mind find themselves stranded in an unknown world. Full of vast wonders, threats, and opportunities, this new world is an unknown element for a crew accustomed to war and hardship. But, all Edens fall and beyond the embers of war lay the dawn of victory. Halo/Mass Effect AU John/Cortana, Lasky/Palmer
Crossover - Halo & Mass Effect - Rated: T - English - Adventure - Chapters: 16 - Words: 143,775 - Reviews: 469 - Favs: 757 - Follows: 899 - Updated: 1/22/2015 - Published: 12/9/2012 - Master Chief/John-117
The Ongoing Journey
by Senrab Nomis reviews
Atlantis has been on Earth for two months. Now the gang are eager to get back to Pegasus and to take the city they call home with them. But the Pegasus galaxy has more secrets than they imagine and many hidden threats. They will soon learn there are things hiding in the shadows that they never expected to encounter. AU. Chapter 1 now rewritten.
Stargate: Atlantis - Rated: T - English - Sci-Fi/Adventure - Chapters: 90 - Words: 447,198 - Reviews: 858 - Favs: 410 - Follows: 448 - Updated: 12/25/2014 - Published: 8/14/2010
A Clashing of Ways
by Avid Reader403 reviews
Ten years have passed since the Human-Covenant War ended and the birth of the Species Assembly has brought peace to the Galaxy. Or, at least their part of it. The discovery of a Mass Relay sparks yet another war that will have consequences for all sides involved. The Galaxy will never be the same. Disclaimer: I do not own the franchises.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure - Chapters: 13 - Words: 42,422 - Reviews: 611 - Favs: 1,154 - Follows: 1,460 - Updated: 12/25/2014 - Published: 9/20/2012 - Shepard (M)
by thebluninja reviews
Heavily AU. Thanks to a cold, humanity never discovers the Prothean ruins on Mars, and barely develops Mass Effect technology. They step out onto the galactic stage after the Reapers have harvested every other species, and find the crumbs left behind by the turians, asari, and salarians. Now they must adapt to fight a foe who won't be seen for far longer than human history.
Mass Effect - Rated: T - English - Adventure/Drama - Chapters: 13 - Words: 71,334 - Reviews: 340 - Favs: 1,159 - Follows: 1,346 - Updated: 12/21/2014 - Published: 5/27/2013
by MB18932 reviews
AU. Humanity makes First Contact with the galaxy peacfully, and the resulting technological and cultural exchanges successfully obliterate next to all Renegade beliefs the species holds. This is the world of Mass Effect where the human race is one made up virtually entirely of idealists. Inspired by College Fool's Renegade Reinterpretations.
Mass Effect - Rated: T - English - Drama/Adventure - Chapters: 26 - Words: 38,991 - Reviews: 488 - Favs: 964 - Follows: 1,044 - Updated: 11/24/2014 - Published: 1/25/2013 - Shepard (M)
Earth's Mightiest Hero
by TheWabbajackX reviews
((Post Iron Man 3/Thor 2)) Loki returns for revenge but ends up unleashing prehistoric forces on an unsuspecting world. With the combined fury of Loki's army and the MUTOs, the Avengers find themselves overwhelmed and on the losing end. To turn the tables, Earth's mightiest heroes must seek the mightiest hero of them all to help save the Earth.
Crossover - Godzilla & Avengers - Rated: T - English - Sci-Fi/Adventure - Chapters: 20 - Words: 66,090 - Reviews: 136 - Favs: 210 - Follows: 122 - Updated: 11/9/2014 - Published: 5/20/2014 - Dr. Ishiro Serizawa, Godzilla, M.U.T.O., Captain America/Steve R. - Complete
For Fleet and Flotilla - ON PERMANENT HIATUS
by CAS2109 reviews
When the crew of the BattleStar Hades discover unknown debris and a massive structure while on the run from a Cylon fleet, they find themselves thrown onto the galactic stage. How will they adapt to the new challenges thrown at them? Will they ever retake the colonies? Or will they find themselves drawn to a certain race of nomads who share their hate of Artificial Intelligence?
Crossover - Battlestar Galactica: 2003 & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 8 - Words: 39,552 - Reviews: 72 - Favs: 157 - Follows: 228 - Updated: 10/23/2014 - Published: 1/13/2014 - OC, Tali'Zorah, Admiral Hackett
The Age of Miracles
by MrAustin390 reviews
The Guardians of the Galaxy now know that an entire galaxy is depending on them to protect it from evil where it appears, and their journey takes them to Earth, where the Avengers find that they have to rely on each other more than ever to protect the Earth, knowing that no one else can be trusted to. This was the Age of Miracles. Post-TWS, Post-GOTG, Pre-AoU.
Crossover - Avengers & Guardians of the Galaxy - Rated: T - English - Sci-Fi - Chapters: 8 - Words: 33,736 - Reviews: 64 - Favs: 195 - Follows: 298 - Updated: 10/18/2014 - Published: 8/15/2014
WorldWar: The Balance Destroyed
by AlbertG reviews
The 'Race', and the Colonials of Cyrannus each tried to conquer Earth. They both failed. The Race has a new colony now. The Colonials haven't finished yet. It's a bad combination all around because everyone's stubborn. Welcome to the galaxy at large.
Crossover - Stargate: SG-1 & Battlestar Galactica: 2003 - Rated: K+ - English - Sci-Fi/Fantasy - Chapters: 30 - Words: 148,076 - Reviews: 782 - Favs: 585 - Follows: 535 - Updated: 10/11/2014 - Published: 3/16/2010 - Complete
A Change of Fate
by DX1998 reviews
While fleeing from the Ori after the death of their alllies, the Odyssey is near destruction. In a desperate bid for surviaval, a future version of Samantha Carter develops a plan to use the power of the Ori beam to save the ship. But it goes horribly wrong...now the cruiser is in a new reality, and a new war. Can they help their cousins in the UNSC? Or will the Covenant prevail?
Crossover - Stargate: SG-1 & Halo - Rated: T - English - Adventure - Chapters: 29 - Words: 104,009 - Reviews: 744 - Favs: 905 - Follows: 934 - Updated: 10/7/2014 - Published: 1/17/2013 - S. Carter, Master Chief/John-117 - Complete
by prometheus55 reviews
It's said that a single decision can alter the path of millions and the shape the galaxy. Most think those choices are epic struggles between good and evil. No one could have ever imagined that such a decision would have to do with the negligent placement of a simple wooden crate. Forty-seven years later the consequences of that decision have changed course of the entire galaxy.
Stargate: SG-1 - Rated: M - English - Adventure/Sci-Fi - Chapters: 7 - Words: 51,920 - Reviews: 179 - Favs: 433 - Follows: 525 - Updated: 10/1/2014 - Published: 8/23/2013 - S. Carter, D. Jackson, Teal'c
Halo: Mass Revelation
by REDSTORMAR555 reviews
Decades have passed since the devastation of the Human-Covenant War, with both factions forging new bonds with each other and other foreign powers that reach the galactic stage. Years after meeting a species remarkably similar to humanity, a relic is found in the icy moons of Harvest. Little does the galaxy know that this find would ignite wars for both power, and survival.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 13 - Words: 46,887 - Reviews: 175 - Favs: 394 - Follows: 470 - Updated: 9/10/2014 - Published: 1/16/2013
Lord of the Rings: The Spartan Prophecy
by So-Pro Warrior reviews
It has been four years since the Battle of the Ark. The Forward Unto Dawn crash lands onto a unknown world and onboard the Dawn. The SPARTAN John-117 better known as Master Chief awakens from his sleep. He soon finds himself on a strange new world with only his old AI partner Cortana by his side. However he will soon discover that it was not chance that brought him here. But fate.
Crossover - Lord of the Rings & Halo - Rated: T - English - Adventure/Sci-Fi - Chapters: 18 - Words: 131,910 - Reviews: 206 - Favs: 400 - Follows: 289 - Updated: 9/6/2014 - Published: 4/7/2013 - Aragorn, Master Chief/John-117 - Complete
Mass Effect X Halo Spartan Dawn
by Freedom Guard reviews
Yet another creation of mine to help ease my mind, I hope that everyone does not mind seeing this one. I know there are a lot of crossover with Mass Effect and Halo, but no sense not trying a bit of it in my free time. Story on Ice, Updating all NON Halo stories is priority now.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 13 - Words: 233,980 - Reviews: 900 - Favs: 1,304 - Follows: 1,182 - Updated: 8/27/2014 - Published: 10/8/2010 - Master Chief/John-117
Nature Has An Order
by kreite reviews
The encroaching kaiju menace awakens an ancient super predator. The events and lore of Pacific Rim are here meshed with those of Godzilla (2014).
Crossover - Godzilla & Pacific Rim - Rated: T - English - Sci-Fi/Drama - Chapters: 4 - Words: 8,194 - Reviews: 30 - Favs: 117 - Follows: 145 - Updated: 8/19/2014 - Published: 5/29/2014 - Godzilla, Mako M., Raleigh B.
by BIG Z1776 reviews
When the UNSC finds a Stargate and decides to use it things happen in a way never before seen. The most powerful Human entity in the galaxy has arisen to take the galaxy back from evil and oppression. But the road ahead is long and tough, and Earth will look to its mightiest champions to take the fight to their enemies. No Covenant or Forerunners. Normal SG-1 bad guys and setting.
Crossover - Stargate: SG-1 & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 6 - Words: 37,433 - Reviews: 228 - Favs: 399 - Follows: 499 - Updated: 8/15/2014 - Published: 10/7/2013
Mass Effect: The Superman
by Magik8ball reviews
If you are reading my previous story, Mass Effect: The Bat's Legacy then this story should be familiar. This is a combination of two different franchises, none of which I own. This is a fan-fiction following Superman in the Mass Effect Universe. Reviews are encouraged and hope you enjoy.
Crossover - Superman & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 18 - Words: 41,843 - Reviews: 69 - Favs: 111 - Follows: 126 - Updated: 8/5/2014 - Published: 1/16/2013
by AlexanderD reviews
How much naquadah would a woodchuck chuck if a woodchuck could chuck naquadah?
Stargate: Universe - Rated: T - English - Chapters: 54 - Words: 354,787 - Reviews: 1331 - Favs: 456 - Follows: 454 - Updated: 7/24/2014 - Published: 5/1/2012
The Lost Tribe
by wilkins75 reviews
during the victory tour celebrating five years since the end of thee Reaper war, the Normandy travels to the Cronian Nebula to let Javik put the ghost of his dead team to rest only to discover something that will rewrite history of not just humanity but the galaxy as a whole. Male solider Sheppard/Ash
Crossover - Battlestar Galactica: 2003 & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 59 - Words: 206,051 - Reviews: 779 - Favs: 436 - Follows: 440 - Updated: 7/12/2014 - Published: 7/20/2012 - Shepard (M) - Complete
by Fabius Maximus reviews
Set after Season 7 of SG1 and Before the Battlestar Galactica miniseries, two people's are about to discover that they have to radically reassess how they and the larger universe interact.
Crossover - Stargate: SG-1 & Battlestar Galactica: 2003 - Rated: T - English - Sci-Fi/Drama - Chapters: 11 - Words: 20,540 - Reviews: 163 - Favs: 235 - Follows: 368 - Updated: 6/29/2014 - Published: 4/14/2013
A Universal Galaxy Ruptures
by Halo-Guy Fan reviews
Multiple crossovers JC's Avatar, Star Wars, Halo, Mass Effect, and more. Ch.10: Turians vs Mandalorians
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 10 - Words: 99,090 - Reviews: 2753 - Favs: 379 - Follows: 398 - Updated: 6/16/2014 - Published: 3/17/2013 - Master Chief/John-117, Shepard (M)
by Ordos Yama reviews
In the Grim Darkness of the 41st Millennium: there is only constant war and death. The Imperium struggles to stand strong. The Eldar strive for survival. The Tau seek out their destiny. The Necrons move to reclaim their former glory. The Tyranids continue consuming to sate their endless hunger. De Orks go WAAAAGHH!. The Citadel just doesn't have enough dakka.
Crossover - Warhammer & Mass Effect - Rated: K - English - Sci-Fi - Chapters: 4 - Words: 22,619 - Reviews: 158 - Favs: 180 - Follows: 222 - Updated: 5/26/2014 - Published: 4/16/2014
Mass Effect: The Bat's Legacy
by Magik8ball reviews
This idea came about while playing Mass Effect and visualizing what Batman could do with all the technology and story elements available in the Mass Effect Universe. This is a complete amalgamation of the two concepts and involves totally new characters. Purely fanfiction, hope you enjoy. I read all comments and will try to incorporate any ideas into story, thanks.
Crossover - Batman & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 21 - Words: 48,540 - Reviews: 40 - Favs: 94 - Follows: 94 - Updated: 5/16/2014 - Published: 9/10/2012
Halo: Mass Contact
by BattleshipFusou reviews
Thirty-five years have past since the end of the Human-Covenant War. Having reclaimed most all its previous glory, the UNSC exploration locates a massive artificial construct in the outer orbit of a star. While investigating the object alongside their Sangheili allies, new aliens come forth from the construct and bring humanity into a fate they never expected. ON HIATUS
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 20 - Words: 26,814 - Reviews: 641 - Favs: 885 - Follows: 1,185 - Updated: 4/30/2014 - Published: 12/22/2012
Stargate: The Rise of Terra
by Lord Knightsky reviews
With Earth in the possession of the Asgard Core as well as Atlantis and the Alteran Database on Earth it is now time for humanity to unite. Terra will rise to follow in the wake of the Ancients and travel the Universe to discover its secrets.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Adventure/Sci-Fi - Chapters: 8 - Words: 56,270 - Reviews: 50 - Favs: 187 - Follows: 242 - Updated: 3/13/2014 - Published: 4/25/2012 - J. O'Neill, S. Carter/Sam
The Effect of Diaspora
by ReaderMike reviews
In 2157 PD, A Turian patrol attacked a newly discovered race for attempting to activate a prime relay. Unfortunately, the race in question had been in space nearly as long as the Asari have. Unlike the Asari, this wasn't a race of diplomats. This race had a fleet far more vast than the combined citadel races, and the Turians managed to piss them off. Eventual Slash.
Crossover - Mass Effect & Honor Harrington - Rated: M - English - Sci-Fi - Chapters: 14 - Words: 48,579 - Reviews: 420 - Favs: 867 - Follows: 1,021 - Updated: 1/30/2014 - Published: 8/21/2012 - Shepard (M)
Coming of the Ancients
by Shadowz081 reviews
Centuries after the end of the great war, the UNSC and Neo-covenant now live in peace, but what happens when they discover not just one but two splinter fraction of humans? The System Alliance and their Citadel and Prehistoric humanity and their old allies. But with their welcoming appearance, so will ancient threats loom around the corner ready to wage war...
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 7 - Words: 74,425 - Reviews: 283 - Favs: 568 - Follows: 629 - Updated: 1/4/2014 - Published: 9/19/2012
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: 459 - Follows: 534 - Updated: 12/29/2013 - Published: 6/21/2011
Avengers of the Ring
by Dr Matthattan reviews
Due to a freak accident involving the Bifrost, the Avengers Captain America, Thor and the Hulk are thrown into the world of Middle-earth. They join the Fellowship of the Ring in their epic struggle to defeat the Dark Lord Sauron.
Crossover - Lord of the Rings & Avengers - Rated: T - English - Adventure/Humor - Chapters: 46 - Words: 269,301 - Reviews: 1063 - Favs: 1,334 - Follows: 757 - Updated: 12/3/2013 - Published: 12/7/2012 - Complete
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: 307 - Favs: 490 - Follows: 525 - Updated: 12/1/2013 - Published: 7/14/2011 - SPARTAN-B312/Noble Six, Tali'Zorah
by Eterna1Soldier reviews
An Asari research team is dispatched by the Thessian Council to an unexplored region of space. Their mission? Observe and document the cultural and technological progression of a newly discovered pre-space flight species.
Mass Effect - Rated: T - English - Drama/Tragedy - Chapters: 2 - Words: 7,273 - Reviews: 114 - Favs: 332 - Follows: 427 - Updated: 12/1/2013 - Published: 10/14/2013
Worldwar: Change of the Balance
by MTT3 reviews
The Race has invaded, much of the Earth has fallen to the lizards from outer space. Humanity is on the brink of being overrun...but then from a totally unexpected side they receive help. Note: For a better view on the pic please go here: /gallery/39115728
Worldwar series - Rated: T - English - Sci-Fi - Chapters: 9 - Words: 64,412 - Reviews: 24 - Favs: 36 - Follows: 30 - Updated: 11/9/2013 - Published: 3/11/2013
Halo: A New Age
by xpredatorx reviews
In the 26th century humanity along with the sangheili, san'shyuum formed the Orion Systems Alliance the center of galactic government in the orion arm of the galaxy, soon the OSA will meet the citadel council and discover a billion year old secret.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Suspense - Chapters: 34 - Words: 225,340 - Reviews: 709 - Favs: 741 - Follows: 725 - Updated: 10/7/2013 - Published: 3/24/2012
Reclamation of a Scattered Race
by Andybiotics reviews
The Absolute Record. The archive of all Forerunner knowledge. It will lead the UNSC to heights unimaginable. But it will also reveal the impossible that lies hidden within the galaxy.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure - Chapters: 6 - Words: 18,894 - Reviews: 250 - Favs: 474 - Follows: 609 - Updated: 10/1/2013 - Published: 3/10/2013 - S. Palmer, Shepard (F)
Dust of the Stars
by bryan0711 reviews
The Colonies believed themselves alone in the galaxy. The Cylons were their only enemy. After a confrontation between the Valkyrie BSG and Ha'tak motherships the Colonies are thrown onto the galactic scene, unprepared, for an inevitable confrontation...
Crossover - Stargate: SG-1 & Battlestar Galactica: 2003 - Rated: T - English - Chapters: 24 - Words: 323,498 - Reviews: 337 - Favs: 391 - Follows: 447 - Updated: 9/12/2013 - Published: 4/5/2010 - J. O'Neill, W. Adama
Halo: First Contact
by FuzyDr4G0NZ reviews
An Asari Deep space exploration craft discovers an unknown wreck in space, meanwhile the UNSC Gorgon is sent out on a scouting mission into the lost outer colonies.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 16 - Words: 62,980 - Reviews: 477 - Favs: 628 - Follows: 850 - Updated: 8/26/2013 - Published: 12/19/2012
A New Start
by FuzyDr4G0NZ reviews
The remaining Forerunners leave their home galaxy for a new, only to find somethings will never leave them.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 10 - Words: 22,210 - Reviews: 291 - Favs: 347 - Follows: 425 - Updated: 8/22/2013 - Published: 3/26/2013 - Didact, Shepard (M)
A different kind of drop
by FuzyDr4G0NZ reviews
The Rookie ends up at the SGC, what does SG-1 and Hammond think of this newcomer and will the rookie ever adjust to his new situation? and will he ever find a way home.
Crossover - Stargate: SG-1 & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 6 - Words: 18,856 - Reviews: 77 - Favs: 140 - Follows: 208 - Updated: 8/17/2013 - Published: 8/26/2012 - J. O'Neill, Rookie
A Slipspace Occurrence
by Lizburn reviews
When a Slipspace portal sucks the four Spartans of the original Blue Team into a new Universe, they'll find themselves fighting Collectors, Geth and a foe they can relate to. The fate of humanity falls to Commander Shepard's team, and to the Spartans of the UNSC, once again. (Apologies for lack of uploading. Recent writer's block, will be finished in one month approx.)
Crossover - Halo & Mass Effect - Rated: M - English - Humor/Sci-Fi - Chapters: 12 - Words: 25,155 - Reviews: 62 - Favs: 65 - Follows: 116 - Updated: 7/29/2013 - Published: 4/22/2013 - Master Chief/John-117, Shepard (M)
Veteran Player, Different Game
by D4RKL0RDR3V4N reviews
A new age has dawned. New alliances have formed. Old grudges have been forgotten. But darkness looms on the edges of dark space, and it has sworn none shall escape the coming fire... AU post-Halo 3, pre-Mass Effect
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 35 - Words: 56,069 - Reviews: 332 - Favs: 332 - Follows: 411 - Updated: 7/28/2013 - Published: 5/31/2012 - Fred-104, Admiral Hackett, Shepard (F)
by aaron vig reviews
Shepard had seen that the Reapers were coming, then the Heretics and the mercenary armies now sent to stop her. But she never could have predicted the other-world power and opportunity she'd be given... by Cortana and the Master Chief. Mass Effect/Halo
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 13 - Words: 81,220 - Reviews: 365 - Favs: 669 - Follows: 774 - Updated: 7/16/2013 - Published: 5/5/2010 - Master Chief/John-117, Shepard (F)
Star Trek: The Mass Effect
by Jed Rhodes reviews
Commander John Shepard of the Federation Starship USS Normandy faces demons from his past that now threaten both Council Space and the Federation...
Crossover - StarTrek: The Next Generation & Mass Effect - Rated: T - English - Drama/Horror - Chapters: 30 - Words: 89,564 - Reviews: 108 - Favs: 217 - Follows: 166 - Updated: 7/10/2013 - Published: 3/15/2013 - J. Picard, Shepard (M), Tali'Zorah - Complete
by swsf09 reviews
Empires rise and fall in the Milky Way Galaxy. Could one person have the power to bring them all down? Or will they find the strength to forge something greater out of the fires of war. Update.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 7 - Words: 112,173 - Reviews: 217 - Favs: 243 - Follows: 254 - Updated: 7/4/2013 - Published: 11/18/2012 - Master Chief/John-117, Shepard (M)
Clash of Empires: Reclaimer War
by HD-spartan reviews
The USFA with the help of a Precursor Artefact have achieved intergalactic travel and have begun to colonies new worlds. The Turian Hierarchy discover an new race and move to suppress them. The wheels of fate are turning and soon the Reclaimer will bring fire to this new galaxy.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 8 - Words: 31,593 - Reviews: 448 - Favs: 782 - Follows: 950 - Updated: 6/28/2013 - Published: 7/8/2012 - Master Chief/John-117, Kelly-087, Shepard (F), Garrus V.
Halo: The Empyrean Effect
by Vizantir reviews
What if humanity has a much grander destiny than anyone has ever even imagined? They need only to discover the secret, buried for eons uncounted. Rated T for battle scenes and thematic content. Features many OC's. Warning: This fic is EXTREMELY AU. - FULL REVISION IS BEING PLANNED
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 11 - Words: 67,716 - Reviews: 220 - Favs: 278 - Follows: 354 - Updated: 5/11/2013 - Published: 9/3/2012
Master Chief and the Order of the Phoenix
by LordCaldrin45 reviews
It's been four years since Master Chief escaped the explosion of Halo. The wreckage of the Forward Unto Dawn went through a black hole, teleporting Master Chief and Cortana to back to 1995 Earth and crash land in England, where Harry Potter is taking his fifth year. A new adventure is about to begin. Review!
Crossover - Harry Potter & Halo - Rated: T - English - Chapters: 10 - Words: 19,003 - Reviews: 239 - Favs: 280 - Follows: 369 - Updated: 5/7/2013 - Published: 7/16/2012 - Harry P., Master Chief/John-117
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: 1317 - Favs: 2,678 - Follows: 2,732 - Updated: 4/10/2013 - Published: 8/12/2011
Mass Effect: Intertwined History
by Artificial Care reviews
Just 10 years after the Interplanetary War, after Humanity is unified under the UNSC, do they meet the Turian Hierarchy in the First Contact War. After being introduced to the Galactic Community and technology which will allow them to colonize other systems, what effect will the early Halo Humanity have on the galaxy? Will they be prepared for the trials to come?
Crossover - Halo & Mass Effect - Rated: M - English - Mystery/Sci-Fi - Chapters: 3 - Words: 11,729 - Reviews: 190 - Favs: 283 - Follows: 371 - Updated: 4/7/2013 - Published: 4/4/2013
Halo: First Contact
by Real Teagy SOT reviews
The year is 2525 during the golden age of Humanity. After centuries of expansion Humanity will encounter an alien intelligence and realize that no amount of preparation could have prepared them for first contact. Contact with Harvest is lost and the Human Race will dedicate itself to Interplanetary War once more. The Covenant has conquered more species into it's Empire.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Suspense - Chapters: 3 - Words: 11,079 - Reviews: 50 - Favs: 118 - Follows: 133 - Updated: 3/21/2013 - Published: 3/10/2013 - A. J. Johnson
A City Upon A Hill
by prometheus55 reviews
They say a single choice can change the course of history. I'm not sure if that is true but I think it can certainly influence it. When I stood at the core of Panchaea all those years ago I had no idea what would come about as a consequence of my actions. So perhaps I did change history. But at the time all I did was what I thought was right. - Adam Jensen, 2078
Crossover - Deus Ex & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 5 - Words: 63,836 - Reviews: 311 - Favs: 939 - Follows: 939 - Updated: 3/11/2013 - Published: 10/27/2012
Embers of War
by ChaoslordZX reviews
As the Cylon war ends bringing peace to the twelve colonies the Covenant war begins, blanketing the UNSC and her colonies in brutal warfare. While two ships from both sides are on a simple patrol they cross paths. This event draws both ships into a world of political secrets and intrigue as well as a horrifying war against a ruthless enemy. Early Halo/Blood and Chrome era x-over
Crossover - Halo & Battlestar Galactica: 2003 - Rated: M - English - Adventure/Sci-Fi - Chapters: 7 - Words: 46,576 - Reviews: 81 - Favs: 75 - Follows: 88 - Updated: 3/10/2013 - Published: 11/14/2012
by Turrasta reviews
Halo AU/X-over. Humanity's first contact with extra-terrestrial intelligence goes poorly for all around...
Crossover - Halo & Battlestar Galactica: 2003 - Rated: M - English - Sci-Fi/Adventure - Chapters: 23 - Words: 88,617 - Reviews: 256 - Favs: 373 - Follows: 365 - Updated: 3/5/2013 - Published: 11/2/2010
An Essential Guide to TheMantleverse: CODEX
by Qwerty282 reviews
This is the timeline for TheMantleverse, and also is the archive of the many massive info-dumps I will be putting up. BEWARE: MASSIVE amounts of information inside. Risk of over-saturation present.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 4 - Words: 12,000 - Reviews: 37 - Favs: 49 - Follows: 49 - Updated: 3/4/2013 - Published: 1/14/2013
Flames of War
by ICHeart reviews
The USF...founded in the ashes of the Great War has spent years rebuilding. They are inheritors of the Forerunners and are ready to take hold of the Mantel...but first they have to deal with another Galactic Superpower. However, dark forces gather as these two groups fight to gain control of the Galaxy.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 5 - Words: 33,471 - Reviews: 221 - Favs: 414 - Follows: 482 - Updated: 3/2/2013 - Published: 11/19/2012 - Master Chief/John-117, Shepard (M)
The Fifth Race
by Lord Nomad reviews
Stargate SG1/Battlestar Galactica Crossover: Set after the movie "the Ark of Truth" and Season 3 of BSG. The remnants of the 12 colonies of Kobol are at the end of their journey and encounters the Fifth race.
Crossover - Stargate: SG-1 & Battlestar Galactica: 2003 - Rated: T - English - Sci-Fi - Chapters: 16 - Words: 83,273 - Reviews: 254 - Favs: 498 - Follows: 600 - Updated: 2/28/2013 - Published: 3/24/2008
Halo Colonial Horizon
by SpaceCowboy2013 reviews
A UNSC Cruiser escaping a deadly battle with the Covenant Onslaught and performing the Cole Protocol jumps into the middle of the Cyrannus Sector. But will the Covenant onslaught destroy the Colonials and the UNSC before they destroy each other? (CANCELLED, FOCUSING ON HALO THE IMPERIAL WAR)
Crossover - Halo & Battlestar Galactica: 2003 - Rated: T - English - Sci-Fi - Chapters: 13 - Words: 93,820 - Reviews: 446 - Favs: 448 - Follows: 439 - Updated: 2/21/2013 - Published: 6/24/2011 - Kurt-051, W. Adama
by ResurgentClone reviews
The Lucian Alliance is defeated, the line has been held against the Wraith in orbit around Earth. Now it's time for Atlantis to yield it's secrets.
Crossover - Stargate: SG-1 & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 12 - Words: 26,674 - Reviews: 231 - Favs: 369 - Follows: 464 - Updated: 2/18/2013 - Published: 9/26/2012
HALO: The Terran Republic Affair
by UH-60 NIGHTSTALKER reviews
When the Newly formed Terran Union and its allies make contact with the Galactic Republic, it sets off in motion events that would shake up a galaxy that is not so far away. Slight A/U.
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 32 - Words: 79,884 - Reviews: 987 - Favs: 885 - Follows: 598 - Updated: 2/15/2013 - Published: 8/18/2012 - Complete
by I Am Atrocity reviews
During the battle against the Chitauri, Loki has a change of heart. Can the Lord of Lies and Mischief become something more than a man, broken by his own misdeeds, seeking the acceptance he was never given? Loki/Natasha.
Avengers - Rated: M - English - Adventure/Romance - Chapters: 26 - Words: 142,168 - Reviews: 464 - Favs: 575 - Follows: 414 - Updated: 1/30/2013 - Published: 5/12/2012 - [Black Widow/Natasha R., Loki] Thor, Thanos - Complete
Trafalgar's 'Gate V2
by FuzyDr4G0NZ reviews
A Battle group on an exploration mission, finds themselves far from home with friends old and new and enemies that have a tendency to not die.
Crossover - Stargate: SG-1 & Halo - Rated: T - English - Adventure/Sci-Fi - Chapters: 3 - Words: 7,167 - Reviews: 46 - Favs: 69 - Follows: 95 - Updated: 1/29/2013 - Published: 11/3/2012
Improbable Meetings of the Wibbly Wobbly Kind
by Wednesday1990 reviews
The Doctor finds himself landing back on Earth, much to his confusion. Unfortunately for him, SHIELD is waiting for his arrival.
Crossover - Doctor Who & Avengers - Rated: T - English - Adventure/Sci-Fi - Chapters: 9 - Words: 21,703 - Reviews: 336 - Favs: 1,052 - Follows: 1,339 - Updated: 1/10/2013 - Published: 6/15/2012 - 10th Doctor, Agent Phil Coulson
Over the Horizon
by Glennfiddich12 reviews
While on missions of discovery, two cultures meet and must face the challenges of their enemies and their pasts together. A Battlestar Galactica/Stargate crossover.
Crossover - Stargate: SG-1 & Battlestar Galactica: 2003 - Rated: T - English - Drama/Adventure - Chapters: 10 - Words: 197,463 - Reviews: 405 - Favs: 526 - Follows: 653 - Updated: 12/31/2012 - Published: 2/22/2010
The Consequences Of Not Being Polite
by The Sidhe reviews
The Colonials finally encounter their long lost relatives. However, they find out that their cousins are not quite what they had expected. Now AU due to progression in the recent season.
Battlestar Galactica: 2003 - Rated: T - English - Sci-Fi - Chapters: 47 - Words: 266,212 - Reviews: 780 - Favs: 1,145 - Follows: 877 - Updated: 12/17/2012 - Published: 10/12/2006 - Complete
by MovinTarget666 reviews
The Logic Rebellion began and ended with Sonny, now he leads the NS5s and all of Earth to the new era of development. And soon the discovery of Prothean ruins starts a new journey for Sonny and all of Sol. I am done with this story (can't think of where to go). the story is now available for anybody to advance, write in this universe you know?
Crossover - Mass Effect & I, Robot - Rated: M - English - Chapters: 7 - Words: 8,058 - Reviews: 70 - Favs: 146 - Follows: 152 - Updated: 12/12/2012 - Published: 6/28/2012 - Complete
Worldwar: War of Equals
by Drgyen reviews
In 1942, the alien known as the "Race" arrived in Earth's orbit and invaded the planet in the midst of World War II. The events that occurred happened in another universe. But what if fate allow the Race to wait another 70 years to their invasion plan... (As of 2016, story is declared dead fic.)
Worldwar series - Rated: M - English - Sci-Fi - Chapters: 7 - Words: 22,907 - Reviews: 63 - Favs: 209 - Follows: 189 - Updated: 11/21/2012 - Published: 9/8/2012 - Complete
by fjun reviews
Adrift in Slipspace, hoping to get out Master Chief goes to cryo sleep, while Cortana keeps vigil. When, or where are they going to get out of the everlasting blackness?
Crossover - Halo & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 3 - Words: 5,509 - Reviews: 18 - Favs: 34 - Follows: 77 - Updated: 11/20/2012 - Published: 11/6/2012 - Master Chief/John-117, Shepard (F)
Mass Effect : The Rise of the UNSC
by UNSC - 30134424 reviews
The UNSC chases the Storm to the Citadel where they are finally defeated. The UNSC makes first contact with the Citadel Council after preventing their station from falling into Storm control. Unfortunately however, the Shield World of Requiem is destroyed and it's vast archive of knowledge is lost. The UNSC is rebuilding from the Great War. What could happen next?
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 1 - Words: 4,676 - Reviews: 40 - Favs: 95 - Follows: 97 - Published: 11/14/2012
Stargate: A New Era
by DN7 reviews
It's been 15 years since the first mission through the gate. When President Hayes visits the SGC to start talking about disclosure, a discovery about the Stargate Network will change everyone's understanding of the galaxy. AU fic, after SG:U, T for now
Crossover - Stargate: SG-1 & Mass Effect - Rated: T - English - Adventure - Chapters: 6 - Words: 22,659 - Reviews: 144 - Favs: 290 - Follows: 451 - Updated: 10/13/2012 - Published: 9/14/2011 - Complete
Into the Wild
by zero0hero reviews
A lone UNSC frigate finds itself far from home and holding the keys to ending the Covenant war. If only they can survive insane aliens, a race rampant AIs, and a cutoff branch of their own species.
Crossover - Halo & Battlestar Galactica: 2003 - Rated: T - English - Chapters: 7 - Words: 63,650 - Reviews: 63 - Favs: 168 - Follows: 194 - Updated: 9/16/2012 - Published: 9/13/2010
Of Time and Space
by CatsbytheGreat reviews
The Doctor travels to New Mexico to investigate an atmospheric disturbance. What he finds is a Norse God, a secret organization, and far more trouble than he ever wanted to get himself into.
Crossover - Doctor Who & Avengers - Rated: T - English - Adventure/Sci-Fi - Chapters: 7 - Words: 14,196 - Reviews: 43 - Favs: 105 - Follows: 193 - Updated: 9/14/2012 - Published: 7/3/2012 - 11th Doctor, Loki
Forward Unto Atlantis
by LucyFearsTheMorningStar reviews
On the way back to Atlantis, the USS Daedalus stumbles upon a wrecked Frigate floating in the void of space between the Pegasus Galaxy and the Milky Way. Will a weary expedition find unexpected salvation? Or will they add to the monument of Ancient sins?
Crossover - Halo & Stargate: Atlantis - Rated: M - English - Sci-Fi/Romance - Chapters: 6 - Words: 18,081 - Reviews: 312 - Favs: 402 - Follows: 533 - Updated: 9/5/2012 - Published: 1/4/2010
by robertp6165 reviews
What if the Colonial Fleet from the 2003 version of BATTLESTAR GALACTICA had jumped into the Delphic expanse in the year 2153, where it encountered Captain Jonathan Archer and the U.S.S. Enterprise NX-01?
Crossover - StarTrek: Enterprise & Battlestar Galactica: 2003 - Rated: M - English - Sci-Fi/Adventure - Chapters: 13 - Words: 52,092 - Reviews: 119 - Favs: 172 - Follows: 232 - Updated: 8/31/2012 - Published: 3/26/2012 - J. Archer, W. Adama
What The Future Brings
by Real Teagy SOT reviews
Only 5 years after the End of the Human-Covenant war does Humanity meet another alien Civilization. but this one has different technology and hasn't heard of the Forerunners. Is this one open to peace at first contact? or will Humanity be bludgeoned by outside forces yet again?
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 17 - Words: 54,286 - Reviews: 376 - Favs: 445 - Follows: 452 - Updated: 8/28/2012 - Published: 7/18/2012 - Master Chief/John-117, Shepard (M)
The Lost Soldier
by bsm117 reviews
Shepard is on a mission to stop the collector's. But before she has a chance to get her team into the best shape that they can be, she stumbles onto a ship named Forward Unto Dawn.Paragon Shepard, Spacer War Hero.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Sci-Fi - Chapters: 6 - Words: 24,410 - Reviews: 83 - Favs: 193 - Follows: 237 - Updated: 7/29/2012 - Published: 7/30/2011 - Master Chief/John-117, Shepard (F)
by Eterna1Soldier reviews
"I came, I saw, I conquered." Julius Ceasar. In the 21st century humans make rapid advances into space, with individual nations striving to create their own interstellar empires. Space, for most people, was a means to escape, to leave a conflicted, divided and violent world. But wherever man went, devastation soon followed. (Title Changed)
Mass Effect - Rated: T - English - Chapters: 5 - Words: 14,865 - Reviews: 220 - Favs: 519 - Follows: 581 - Updated: 7/26/2012 - Published: 1/22/2012 - Councilor Tevos
It Started With A Tuning Fork
by Milo J7 reviews
During a less then routine scouting mission Captain 'Bulldog' Novacek makes an unplotted jump and discovers an object that will change Humanity's view of the galaxy. But when both sides go on the war footing and the Twelve Colonies find themselves hopelessly outmatched will the galaxy be ready for a desperate humanity who will do anything to win?
Crossover - Battlestar Galactica: 2003 & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 9 - Words: 32,235 - Reviews: 119 - Favs: 157 - Follows: 223 - Updated: 7/1/2012 - Published: 8/31/2011 - W. Adama
Halo Effect: Reunion
by Sedsone reviews
Halo and Mass Effect crossover. System Alliance is in war with Turian Hierarchy and Batarian Hegemony while SSV Normandy looks for their lost relatives. re-upload
Crossover - Halo & Mass Effect - Rated: T - English - Chapters: 6 - Words: 27,613 - Reviews: 70 - Favs: 112 - Follows: 157 - Updated: 6/9/2012 - Published: 4/4/2012
Mass Effect New Origins V2
by erttheking reviews
On the dawn of the 27th century, the UNSC discovers a Mass Relay, and unlock its power. What follows not only includes making contact with new species and making new friends, but making new enemies as well, and the entire galaxy will shake.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Romance - Chapters: 109 - Words: 442,687 - Reviews: 2407 - Favs: 1,389 - Follows: 936 - Updated: 6/9/2012 - Published: 10/5/2010 - Shepard (F) - Complete
A New Frontier
by Willowfan reviews
The crew of the USS Enterprise-E has had to face many different threats, but this one is unlike any they have ever faced.
Crossover - StarTrek: The Next Generation & Stargate: SG-1 - Rated: K+ - English - Adventure/Sci-Fi - Chapters: 6 - Words: 25,133 - Reviews: 73 - Favs: 173 - Follows: 266 - Updated: 6/5/2012 - Published: 10/8/2011
A New Dawn
by AlexanderD reviews
SG1, Atlantis, and SGU all work towards a brighter future. Past conflicts heat up more than imagined, and a long wondered question is answered. Ancients, Tauri, Asgard, Furling, and a few others thrown in. This ties up the loose ends the writers left us.
Stargate: Universe - Rated: T - English - Sci-Fi/Adventure - Chapters: 74 - Words: 295,200 - Reviews: 1324 - Favs: 685 - Follows: 470 - Updated: 4/16/2012 - Published: 4/29/2011 - Complete
Stargate: Birth of the Federation
by Nairda reviews
With the Asgard and Ancient repository of knowledge, humanity stands ready for a new birth. "It tells the story of the newly created Terran Federation from a Macroscale point of view. Federation expansion, Space battles and the like."
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: T - English - Sci-Fi - Chapters: 13 - Words: 100,942 - Reviews: 226 - Favs: 403 - Follows: 447 - Updated: 2/6/2012 - Published: 2/20/2010
by prometheus55 reviews
After the battle with the Collectors, the Normandy tries to return to the Terminus systems. Unfortunately things don't go as planned and now the remnants of the crew must find a way home. However intentions and outcomes are rarely similar for Shepard. -ON HIATUS.
Crossover - Stargate: SG-1 & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 16 - Words: 128,713 - Reviews: 414 - Favs: 798 - Follows: 836 - Updated: 10/23/2011 - Published: 2/19/2010 - Shepard (F)
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: 911 - Favs: 897 - Follows: 521 - Updated: 9/25/2011 - Published: 7/11/2011
The Cold Open
by V1p3r Mk7 reviews
Galactica finds a Mass Relay that connects humanity to Citadel Space. Brief First Contact War. Total rewrite of the story: now set just months before the fall. Not really a narrative: more like closely spaced snippets and POVs one after another.
Crossover - Battlestar Galactica: 2003 & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 6 - Words: 20,843 - Reviews: 34 - Favs: 67 - Follows: 105 - Updated: 9/19/2011 - Published: 3/10/2011
Survival of the Lambs
by Axemen236 reviews
Battered and beaten, a group of civilian ships protected by eight battlestars struggle to make their way to a "fortress world" rumored to harbor survivors. Before they can find this world, they are thrust into a war never before seen by colonial eyes.
Crossover - Halo & Battlestar Galactica: 2003 - Rated: T - English - Sci-Fi/Adventure - Chapters: 7 - Words: 16,134 - Reviews: 53 - Favs: 35 - Follows: 44 - Updated: 8/30/2011 - Published: 8/8/2011
ME meets ST: Part 2
by Lord Maximus reviews
A series of oneshots involving the Enterprise and other Federation and Citadel characters are they explore the galaxy.
Crossover - Mass Effect & Star Trek: 2009 - Rated: T - English - Chapters: 2 - Words: 18,355 - Reviews: 30 - Favs: 112 - Follows: 118 - Updated: 8/7/2011 - Published: 7/19/2011
The not so sleeping giant
by Morlow reviews
What if humanity had a more realistic tech-level in Mass Effect? What if Humanity was not that much in love with the Citadel councel? When the Earth Union entered the galactic stage, no one really new what to think, only that changes will comming.
Mass Effect - Rated: T - English - Sci-Fi - Chapters: 2 - Words: 3,569 - Reviews: 24 - Favs: 109 - Follows: 143 - Updated: 8/1/2011 - Published: 7/23/2011 - Shepard (M)
Mass Effect: A new past
by Bombsquad reviews
A different history to Mass Effect in which Human technology develops along different lines than anything the Citadel knows...an Alternative History of Mass Effect.
Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 15 - Words: 137,294 - Reviews: 669 - Favs: 1,495 - Follows: 832 - Updated: 5/18/2011 - Published: 12/11/2010 - Complete
Star Trek: Divergence
by keiranhalcyon2010 reviews
In the 22nd Century, after a year of exploration in deep space Enterprise is damaged, near adrift. Their distress call is answered by those who would bring about a new era for Earth and the Galaxy.
Crossover - Stargate: SG-1 & StarTrek: Enterprise - Rated: M - English - Sci-Fi/Adventure - Chapters: 7 - Words: 69,764 - Reviews: 216 - Favs: 712 - Follows: 767 - Updated: 12/29/2010 - Published: 10/18/2009 - S. Carter
Doctor in the House
by Mistress of the Knight reviews
The tenth Doctor has arrived but, due to a well intentioned time machine, will not be being nursed back to health in a London flat by Jackie Tyler. If House gets a hold of him though, he might be less grateful for this fact. Dr Who & House M.D. Crossover
Crossover - Doctor Who & House, M.D. - Rated: T - English - Humor/Drama - Chapters: 17 - Words: 39,249 - Reviews: 267 - Favs: 367 - Follows: 245 - Updated: 8/18/2010 - Published: 3/25/2007 - 10th Doctor, G. House - Complete
ME meets ST
by Lord Maximus reviews
What if not all of the Protheans died? What if they destroyed a Mass Relay in one system to save one race from their fate? What would be the result?
Crossover - Mass Effect & Star Trek: 2009 - Rated: T - English - Chapters: 22 - Words: 139,972 - Reviews: 240 - Favs: 519 - Follows: 303 - Updated: 7/26/2010 - Published: 4/22/2010 - Complete
Halo The Secret Wars
by Demonwithasoul reviews
When the Master Chief and the Arbiter are transported to an unknown place, the war takes a whole new meaning when the fate on entire realities lies at their hands. Crossover Halo/Stargate/Star Wars and many more. R & R
Halo - Rated: M - English - Sci-Fi - Chapters: 17 - Words: 154,401 - Reviews: 178 - Favs: 80 - Follows: 65 - Updated: 3/15/2010 - Published: 10/20/2005
It's only just beginning
by charming-witch reviews
This story starts after the Stargate Atlantis season finale. There will be new enemies and new adventures, as well as new characters from other fandoms - Crossover with JAG, Primeval, Animorphs, Angel & Doctor Who/Torchwood - J/S, D/V, J/E, 10/R, ...
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: M - English - Sci-Fi/Romance - Chapters: 16 - Words: 71,000 - Reviews: 5 - Favs: 10 - Follows: 17 - Updated: 2/6/2010 - Published: 6/17/2009
by imjustaguy reviews
After over two millennia of separation humanity reunites among stars.
Battlestar Galactica: 2003 - Rated: T - English - Adventure/Drama - Chapters: 25 - Words: 58,213 - Reviews: 502 - Favs: 440 - Follows: 381 - Updated: 11/26/2007 - Published: 11/28/2004
Brave New World
by Dekardkain reviews
What if things had taken a very different turn after the return from Kobol? What if instead of finding the Pegasus, they found Earth? Or if Earth found them?
Battlestar Galactica: 2003 - Rated: M - English - Adventure/Romance - Chapters: 22 - Words: 147,562 - Reviews: 58 - Favs: 38 - Follows: 47 - Updated: 5/10/2007 - Published: 4/17/2007 - K. Thrace/Starbuck, L. Adama/Apollo
Far Flung Hope: The Great War
by Bombsquad reviews
It has begun...the Great War. There are two sides, one is the Sentient Coalition. The other, the Covenant Hegemony. This war shall be the largest the Universe shall ever see. Trilions shall fight and die, Galaxies shall be destroyed.
X-overs - Rated: T - English - Sci-Fi/Adventure - Chapters: 16 - Words: 152,887 - Reviews: 174 - Favs: 59 - Follows: 37 - Updated: 11/8/2006 - Published: 5/28/2004
Far Flung Hope: The Beginning PERMENANT HOME
by Bombsquad reviews
Humanity is on it's last leg. It's fleets are gone, it's worlds decimated, it's armies annhilated. Hope is gone. Humanity must search the stars for allies, before the Covenant subjugates more races to use in the war. Moved here because it's getting big
X-overs - Rated: T - English - Sci-Fi/Adventure - Chapters: 14 - Words: 97,918 - Reviews: 39 - Favs: 61 - Follows: 27 - Updated: 5/27/2004 - Published: 5/4/2004 - Complete
Farscape: The Lost Warrior PART I
by NeilGartner reviews
FarscapeBattlestar: GalacticaStargate:SG1 crossover. Lt. Sheba unexpectedly joins the crew of Moya and things goes from bad to worse for everyone when the Goa’uld shows up. Events takes place after Fractures. Please R & R!
Farscape - Rated: T - English - Adventure - Chapters: 23 - Words: 37,095 - Reviews: 94 - Favs: 63 - Follows: 20 - Updated: 8/31/2002 - Published: 4/3/2002 - Complete