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by nestregge reviews
Continuing SG-A, SG-1, SG-U. starts at SG-A S5-E20, follows canon. I'll show how, using tech the heroes gained in the shows, they can defeat any bad guy they encounter, without suddenly giving them super battle ships or tech that ignores the laws of physics. I'm going to expand on all the loose ends. The shows were just the beginning of this story. (Please review.)
Stargate: Atlantis - Rated: T - English - Sci-Fi/Adventure - Chapters: 3 - Words: 15,852 - Reviews: 6 - Favs: 10 - Follows: 15 - Updated: 9/26 - Published: 8/14
by Aminta.defender reviews
Darth Vader meets a ten year old Leia Organa who winds up being his personal assistant. The two are not quite sure what to make of each other. -NO TFA SPOILERS-
Star Wars - Rated: T - English - Family - Chapters: 18 - Words: 102,005 - Reviews: 273 - Favs: 339 - Follows: 478 - Updated: 9/26 - Published: 2/20/2015 - Leia O., Darth Vader
War, Peace, and other Galactic Customs
by The Almighty Afroduck reviews
After a long, terrible war, the Federation of Sovereign Empires forms as the product of the alliance created early in the Great War between the Covenant Separatists and the UNSC. Time passes as they progress greatly, eventually discovering the existence of other galactic governments. The events that will follow will change the course of the galaxy in more ways than one. PART- 2
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 21 - Words: 189,852 - Reviews: 311 - Favs: 547 - Follows: 653 - Updated: 9/22 - Published: 3/1/2014
Living an Indoctrinated Dream
by Aberron reviews
Sending Shepard back in time? Inefficient. Unlikely to produce significant changes to timeline. Sending the Illusive Man back in time? Difficulty level has increased. Jack Harper, The Illusive Man, is back where it all started. New Cerberus, New plan, and the Reapers watching, always watching. Sending a Hero back in time does nothing; Sending back this guy? Priceless. AU.
Mass Effect - Rated: M - English - Chapters: 78 - Words: 938,249 - Reviews: 575 - Favs: 633 - Follows: 724 - Updated: 9/22 - Published: 6/16/2014 - Illusive Man, Hannah S.
by TallYapflip reviews
The First Contact War brought untold destruction to Earth, reducing Humanity to a shell of its former self. For 900 years, Humanity has been working tirelessly to lay claim to its own slice of the Milky Way Galaxy, and they are prepared to bring the Council to its knees to accomplish their goals. (Massive AU, New Technologies, and a far different humanity.)
Mass Effect - Rated: M - English - Sci-Fi - Chapters: 13 - Words: 66,223 - Reviews: 230 - Favs: 658 - Follows: 894 - Updated: 9/20 - Published: 3/4 - [Samantha T., Shepard (F)] Admiral Hackett
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: 18 - Words: 179,291 - Reviews: 1183 - Favs: 1,811 - Follows: 2,236 - Updated: 9/14 - Published: 1/26/2014
The Difference One Man Can Make
by joen1801 reviews
After the Battle of Hogwarts, Harry Potter decided to travel the world. Twelve years later when a new threat attempts to destroy the progress made in Britain he returns home to deal with the situation. During the fight that puts down the small group of upstarts Harry finds himself in a world of ice and fire
Crossover - Harry Potter & Game of Thrones - Rated: M - English - Adventure - Chapters: 19 - Words: 252,550 - Reviews: 3584 - Favs: 6,542 - Follows: 7,532 - Updated: 9/13 - Published: 3/22/2015
by Illuviar reviews
A man with the memories and skills of a Sith Warrior from a conflict that ended four millenia ago finds himself thrown in the opening weeks of the Clone Wars. He has a mission - deal with the current Sith Lord and his supporters permanently and prepare the galaxy for the eventual arrival of the Vong. This is a SI story.
Crossover - Star Wars & Star Wars: The Clone Wars - Rated: M - English - Adventure/Sci-Fi - Chapters: 77 - Words: 300,323 - Reviews: 928 - Favs: 1,249 - Follows: 1,261 - Updated: 9/8 - Published: 10/26/2014
The Immortal Sorceress
by Pass The Message reviews
Helen Potter never thought that getting ahold of the Hallows would be a curse. Never to grow old or die, survive what nobody can and regenerate fast to full health, but she COULD alter herself using her magic. Humanity is changing TOO fast and all she can do, is adapt. Although the immortal never thought to adapt is to...travel to Space where things got shitty. Starcraft X-Over
Crossover - Harry Potter & StarCraft - Rated: M - English - Sci-Fi/Adventure - Chapters: 10 - Words: 30,396 - Reviews: 100 - Favs: 391 - Follows: 412 - Updated: 9/6 - Published: 3/10/2015 - Complete
Forward Unto Dawn
by TheWizardofOzbourne reviews
Triple Crossover, TSCC/Halo w/post-series ST:Voyager elements. Trapped in a universe similar to our own, Cameron and John Henry struggle to return home. To do so, three gifts, each from another universe, will get them home and entangle them in a war they thought they knew. Eventual Jameron and MC/Cortana. Updated! 8-22-2016 CH37 Posted
Crossover - Terminator: Sarah Connor Chronicles & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 37 - Words: 255,957 - Reviews: 501 - Favs: 140 - Follows: 162 - Updated: 8/22 - Published: 3/26/2013 - [John C., Cameron] [Cortana, Master Chief/John-117]
The Dangers of Foresight
by Anne Camp aka Obi-quiet reviews
Anakin's 9 years old again and back at the Temple, bound and determined to change destiny. To do so, he has to juggle trying to stop Dooku from joining Sidious, freeing his mother, avoiding Palpatine, and his training all while maintaining his cover as a 9-year-old initiate. Too bad keeping up a facade isn't one of his strong points.
Star Wars - Rated: T - English - Hurt/Comfort/Family - Chapters: 26 - Words: 162,104 - Reviews: 1721 - Favs: 3,418 - Follows: 4,029 - Updated: 8/19 - Published: 1/12/2014 - Anakin Skywalker, Count Dooku, Obi-Wan K., E. Palpatine
I Still Haven't Found What I'm Looking For
by kathryn518 reviews
Ahsoka Tano left the Jedi Order, walking away after their betrayal. She did not consider the consequences of what her actions might bring, or the danger she might be in. A chance run in with a single irreverent, and possibly crazy, person in a bar changes the course of fate for an entire galaxy.
Crossover - Star Wars & Harry Potter - Rated: M - English - Adventure/Romance - Chapters: 14 - Words: 294,774 - Reviews: 3620 - Favs: 8,234 - Follows: 9,433 - Updated: 8/14 - Published: 4/2/2015 - Aayla S., Ahsoka T., Harry P.
Mass Effect: End of Days
by Postmeat reviews
Humanity never discovered Prothean ruins, expanding through space at their own pace. Humanity develops A.I's, and many other technological breakthroughs, and encounter many dangers. One day they discover a relay in an outlying system, stumbling in on a stable, yet complacent galactic community. How will this complacency be challenged? And what new dangers await them in the galaxy?
Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 15 - Words: 152,405 - Reviews: 377 - Favs: 1,154 - Follows: 1,552 - Updated: 8/13 - Published: 3/8/2015 - Saren A., Shepard (M)
Whiskey Time Travel
by Private Jenkins reviews
When Unspeakable Harry Potter wakes up in 1976, he determines he's either A: In the past. Or B: In a mental hospital. At least the firewhiskey still tastes the same. Waiting tables at the Three Broomsticks, drunken death eater bar fights, annoying an attractive but pushy auror, and avoiding his mother's crush on him is just another day in the life of Harry Potter, 1976
Harry Potter - Rated: T - English - Adventure/Humor - Chapters: 6 - Words: 32,153 - Reviews: 981 - Favs: 4,757 - Follows: 6,012 - Updated: 8/11 - Published: 5/7/2015 - Harry P., Amelia B., Rosmerta, Nicolas F.
Q Damn it!
by BoredZero reviews
As the G-Man is so fond of saying, "The right man in the wrong place makes all the difference." Chapters containing possibly offensive/dark materials will contain multiple warnings. Detailed summary inside. Update: The hole that is Shanxi is finally over with.
Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 13 - Words: 70,214 - Reviews: 147 - Favs: 242 - Follows: 304 - Updated: 8/10 - Published: 4/15/2015 - OC
Acquainted with the Night
by Arrowsbane reviews
It isn't that she is born almost seven years ahead of schedule, or that she has dark hair rather than blonde – a fact which her mother silently curses the gods for. It is the fact that she is born with memories of a life already lived, which makes the Princess Myrcella different. [AU. X-Over. Reincarnation ficlet. Myrcella x Jon Snow] [M for Part 3]
Crossover - Harry Potter & Game of Thrones - Rated: M - English - Adventure/Romance - Chapters: 3 - Words: 14,226 - Reviews: 263 - Favs: 1,223 - Follows: 1,553 - Updated: 7/22 - Published: 11/7/2015 - [Jon S., Myrcella B.] Harry P.
Harry Potter and the Alien Reality
by Pwn Master Paladin 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: 932 - Favs: 2,282 - Follows: 2,832 - Updated: 7/21 - Published: 11/6/2010 - J. O'Neill, Harry P.
The Sum is Greater than its Parts
by Maersikai reviews
Having long since combined forces, a fleet of the Humans and Covenants finest are torn from the universe they know to be thrown in to a strange and desolate reality. They will strive to uphold the Mantle against the Mass Effect's most Ancient Enemy. Will they break the cycle?
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 18 - Words: 168,017 - Reviews: 286 - Favs: 800 - Follows: 1,002 - Updated: 6/21 - Published: 3/2/2015 - T. Hood, Cortana, Shepard (F)
Gods Among Us
by arturus reviews
Fate is a funny thing sometimes. Harry Potter and his friends survived their trial by fire and defeated Voldemort. A year has passed and Hermione Granger is apprenticed as a Curse Breaker. When she discovers an ancient tomb she talks Harry into helping with the excavation. Now they are trapped and they'll need a miracle to survive. HP/BSG now with quite a bit of Stargate in the mix
Crossover - Harry Potter & Battlestar Galactica: 2003 - Rated: M - English - Sci-Fi/Adventure - Chapters: 18 - Words: 153,336 - Reviews: 519 - Favs: 1,148 - Follows: 1,501 - Updated: 6/17 - Published: 1/9/2012 - Harry P., Hermione G.
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: 30 - Words: 285,976 - Reviews: 1009 - Favs: 2,380 - Follows: 2,821 - Updated: 6/16 - Published: 7/19/2014 - U. Wrex, Daro'Xen, Shepard (F), OC
Fall of Empires, Fall of Orders URE
by Ron the True Fan reviews
200 years after Yavin, three Terrans fall into the past, causing ripples in time. Home is a memory. Now they must find a way to survive in a timeline that's falling apart at the seams.
Star Wars - Rated: T - English - Chapters: 19 - Words: 147,702 - Reviews: 81 - Favs: 45 - Follows: 38 - Updated: 5/16 - Published: 1/23
It's been a long road, getting from there to here
by theirishdreamer reviews
The Ethereal War was devastating to humanity but it survived, rebuilds and now moves to take its place amongst the stars. How will the species of the Alpha and Beta Quadrants respond to this very different humanity. *Thanks to Artemetis for getting me to actually put it up and consider restarting it.
Crossover - X-Com & StarTrek: Enterprise - Rated: M - English - Chapters: 16 - Words: 91,722 - Reviews: 28 - Favs: 125 - Follows: 138 - Updated: 5/5 - Published: 7/22/2015
The Sith & the Senator
by WrittinInStone reviews
AU. Anakin Skywalker is captured and sold into slavery to Darth Sidious at the tender age of nine. Padmé Amidala, Queen of Naboo, faces the horrors of the Trade Federation's invasion without the help of the Galactic Senate. Both become warped by their experiences; hardened, vicious, cunning. But then they meet their match… in one another. And it changes the Republic for all time.
Star Wars - Rated: M - English - Romance/Drama - Chapters: 34 - Words: 208,638 - Reviews: 2692 - Favs: 1,705 - Follows: 1,824 - Updated: 4/23 - Published: 11/1/2011 - Darth Vader, Padmé Amidala
A Long Journey Home
by Rakeesh reviews
In one world, it was Harry Potter who defeated Voldemort. In another, it was Jasmine Potter instead. But her victory wasn't the end - her struggles continued long afterward. And began long, long before. (fem!Harry, powerful!Harry, sporadic updates)
Harry Potter - Rated: T - English - Drama/Adventure - Chapters: 13 - Words: 189,460 - Reviews: 680 - Favs: 2,135 - Follows: 2,367 - Updated: 4/4 - Published: 11/19/2013 - Harry P., Ron W., Hermione G.
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: 30 - Words: 169,562 - Reviews: 94 - Favs: 179 - Follows: 182 - Updated: 3/29 - Published: 11/11/2009 - John S.
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: 1836 - Favs: 5,056 - Follows: 5,955 - Updated: 3/1 - Published: 5/7/2013
Harry Potter and the Rejected Path
by zArkham reviews
After one taunt too many by Draco & learning of dark things while possessed, Harry refuses to play his part anymore. Into this comes Luna with her own dark story to tell. They shall both get revenge and shake magical Britain before the end. - Harry/Multi
Harry Potter - Rated: M - English - Adventure/Drama - Chapters: 31 - Words: 389,965 - Reviews: 2550 - Favs: 5,672 - Follows: 6,427 - Updated: 2/28 - Published: 10/5/2010 - Harry P., Luna L.
by Marquis Black reviews
Some men live their whole lives at peace and are content. Others are born with an unquenchable fire and change the world forever. Inspired by the rise of Napoleon, Augustus, Nobunaga, and T'sao T'sao. Very AU.
Harry Potter - Rated: M - English - Adventure - Chapters: 44 - Words: 638,154 - Reviews: 1810 - Favs: 2,946 - Follows: 2,682 - Updated: 1/26 - Published: 4/17/2010 - Harry P.
Last Second Savior
by plums reviews
While leading the final charge against a retreating Dark Lord, Harry is thrown through a destabilized Demon Portal, landing on a strange world in a galaxy far far away. Eventual Harry / Multi
Crossover - Star Wars & Harry Potter - Rated: M - English - Adventure/Fantasy - Chapters: 10 - Words: 123,003 - Reviews: 1959 - Favs: 6,437 - Follows: 7,503 - Updated: 1/23 - Published: 3/4/2013 - [Aayla S., Harry P., M. Brood, Shaak Ti]
by CWBasset reviews
The New Republic is on the brink of collapse. The Sith have reemerged, and war is on the horizon. Yet, everything that is happening around him feels utterly wrong... So when Luke Skywalker receives a mysterious offer to go back in time and correct the Galaxy's destiny, how can he refuse?
Star Wars - Rated: T - English - Drama/Suspense - Chapters: 28 - Words: 169,121 - Reviews: 888 - Favs: 1,004 - Follows: 1,226 - Updated: 1/3 - Published: 4/20/2009 - Luke S., Anakin Skywalker
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: 16 - Words: 22,448 - Reviews: 182 - Favs: 375 - Follows: 535 - Updated: 12/31/2015 - Published: 8/24/2014 - Harry P.
The Phoenix and the Wolverine
by clavina reviews
Q junior's first foray into playing with humanity. So; he decides to throw in a couple of supposedly dead Xmen ; fleeing Colonials ; vengeful cylons and also adds the United Planets of the Federation to the potentially explosive mix !
Crossover - X-Men: The Movie & Battlestar Galactica: 2003 - Rated: T - English - Adventure/Romance - Chapters: 47 - Words: 523,636 - Reviews: 427 - Favs: 271 - Follows: 326 - Updated: 12/16/2015 - Published: 5/9/2012 - Jean G., L. Adama/Apollo
by Dave19941000 reviews
With the discovery of a new trans-galactic gate coordinate, Star Gate Command forms a new expedition to the Triangulum Galaxy. But where the Ancients went trouble always followed, and the Triangulum Expedition finds themselves facing one unlike any the Milky Way or Pegasus galaxy had to offer.
Stargate: SG-1 - Rated: T - English - Sci-Fi - Chapters: 6 - Words: 18,175 - Reviews: 28 - Favs: 67 - Follows: 101 - Updated: 12/10/2015 - Published: 11/30/2014 - OC
Master of the Force: Book 1
by smaster28 reviews
An infant Harry is taken in and raised by an ancient Jedi master Fay after the death of his parents. A budding Jedi Harry tackles the problems of Wizarding world before embarking on a journey that would change the fate of the Jedi order and the Galactic Republic. Light side Harry/ Multi story.
Crossover - Star Wars & Harry Potter - Rated: M - English - Chapters: 8 - Words: 88,529 - Reviews: 1154 - Favs: 2,226 - Follows: 2,568 - Updated: 11/7/2015 - Published: 3/29/2014 - Padmé Amidala, Aayla S., Shaak Ti, Harry P.
Far, Far Away
by Battle Fries reviews
Whisked away to another galaxy, Buffy and Faith train in the ways of the Force. While one learns the ways of the Jedi Order, the other trains to become a Dark Lord of the Sith. (Post-Chosen / Contemporary with The Old Republic / 300 Years Post-KOTOR) Rated M for some language.
Crossover - Buffy: The Vampire Slayer & Star Wars - Rated: M - English - Sci-Fi/Romance - Chapters: 37 - Words: 148,116 - Reviews: 56 - Favs: 59 - Follows: 36 - Updated: 11/5/2015 - Published: 10/25/2012 - Buffy S., Faith L., Satele S. - Complete
by LoneWolf1968 reviews
I've seen several Star Trek/Stargate crossovers so I decided to do one with a bit of a twist. With the theory being that there are an infinite number of realities, wouldn't it make sense that there was an equivalent Jack O'Neill in the Star Trek Universe?
Crossover - StarTrek: The Next Generation & Stargate: SG-1 - Rated: K+ - English - Sci-Fi - Chapters: 12 - Words: 125,446 - Reviews: 68 - Favs: 125 - Follows: 117 - Updated: 9/21/2015 - Published: 4/26/2014 - Complete
Converging of Eras: The Tale of Bethany Cross
by Loretwister reviews
AU and cross-over with SWTOR. Bethany Cross, the Hero of Tython, finds herself fighting in the clone wars almost 3,5 thousand years after her fight against the old emperor. Will the actions of this old republic Jedi ripple trough the war and change the outcome? Or will destiny still go its way? Anakin/OC friendship.
Star Wars - Rated: T - English - Sci-Fi/Adventure - Chapters: 20 - Words: 100,420 - Reviews: 57 - Favs: 81 - Follows: 102 - Updated: 7/24/2015 - Published: 6/19/2013 - Anakin Skywalker, OC
The Fall of Iconia
by wesleyehowell reviews
Book 3 of the Iconia Continuum. The twelve tribes end up in Star Trek's delta quadrant. After forming an alliance with the Iconian representatives there, they help in the dominion war. What does a "fobbed" O'Neill have to do with anything? Reading "Birth" and "Rise" first is a good idea.
Crossover - Stargate: SG-1 & Battlestar Galactica: 2003 - Rated: K+ - English - Sci-Fi - Chapters: 26 - Words: 111,516 - Reviews: 5 - Favs: 33 - Follows: 41 - Updated: 7/23/2015 - Published: 1/1/2015 - D. Jackson, J. O'Neill, W. Adama, L. Adama/Apollo - Complete
What if Darth Maul killed ObiWan Kenobi
by Revenaught reviews
How things might have unfolded had Darth Maul killed Obi-Wan instead of Qui-Gon. Hang on everybody. After a mega delay due to a multitude of factors this story is again under construction.
Star Wars - Rated: M - English - Adventure/Drama - Chapters: 9 - Words: 128,595 - Reviews: 83 - Favs: 155 - Follows: 152 - Updated: 6/19/2015 - Published: 5/6/2005 - Anakin Skywalker, Qui-Gon J.
Glory and Honor To Naharra
by dispatcher652 reviews
John/Teyla,Lorne/OC must find a way to stop a shield from failing that has protected planet Naharra for 10,000 years....Please review...Rated T for language
Stargate: Atlantis - Rated: T - English - Romance/Drama - Chapters: 27 - Words: 126,808 - Reviews: 62 - Favs: 28 - Follows: 34 - Updated: 5/22/2015 - Published: 1/27/2009 - John S., Teyla E.
100,000 Years Later
by Loo Dig-E reviews
The war is lost. Humanity has fallen. As the Forerunner's genocidal campaign nears completion, at least one human manages to escape their wrath. Now, 100,000 years later, the last Titan once again finds herself on a journey to save humanity, uncover the past, and reclaim what was lost.
Crossover - Halo & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 7 - Words: 30,579 - Reviews: 64 - Favs: 152 - Follows: 211 - Updated: 5/11/2015 - Published: 11/20/2013 - OC, Shepard (M)
Legacy of Mankind
by Castage reviews
Mankind traveled through stars. Created and uplifted many species. Fought against Protheans. And was destroyed by Reapers. 48 thousand years later, the last human, prepares universe for Reaper Invasion. M- for safety.
Crossover - Crest of the Stars & Mass Effect - Rated: M - English - Sci-Fi - Chapters: 11 - Words: 26,896 - Reviews: 132 - Favs: 361 - Follows: 389 - Updated: 3/22/2015 - Published: 5/16/2014 - OC
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: 340 - Favs: 851 - Follows: 1,056 - Updated: 2/8/2015 - Published: 11/2/2013 - Shepard (M)
To Boldly Go
by Thrans reviews
When Harry Potter finds himself flung into the world of Star Trek Online, how will he join together Earth's hidden past with the manipulations of Q, as the Federation finds itself at war. Engineer Class, Harem, erratic update schedule.
Crossover - Harry Potter & Star Trek Online - Rated: M - English - Adventure/Romance - Chapters: 7 - Words: 75,717 - Reviews: 89 - Favs: 426 - Follows: 537 - Updated: 1/15/2015 - Published: 4/24/2014 - Harry P.
Harry Potter & The New Life
by smaster28 reviews
Based on SilverAegis Harry Potter: A New Life. Its an AU. Harry's a Shadow Mage. Neville is 'The Boy Who Lived'.
Harry Potter - Rated: M - English - Adventure/Humor - Chapters: 32 - Words: 243,776 - Reviews: 2348 - Favs: 2,817 - Follows: 2,788 - Updated: 12/27/2014 - Published: 1/11/2011 - Harry P., Lily Evans P.
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: 829 - Favs: 367 - Follows: 413 - Updated: 12/25/2014 - Published: 8/14/2010
by plums reviews
A Weapon. A Hero. But now… a loose end. Harry Potter resolves to destroy the enemies who betrayed him on his terms, only to find all his plans torn asunder when he's summoned to a new world plagued with the same enemies as his own.
Crossover - Harry Potter & Warcraft - Rated: M - English - Fantasy/Adventure - Chapters: 18 - Words: 283,005 - Reviews: 2194 - Favs: 5,167 - Follows: 5,082 - Updated: 11/23/2014 - Published: 1/21/2013 - [Harry P., Draenei, Night Elf, Onyxia]
A Stranger on the Frontier
by keiranhalcyon2010 reviews
Keiran Swan was going to die, but rescued from death's clutches by our favorite single letter ROB. Now in another universe, burdened with the knowledge of what's to come, he must walk a tight rope of temptation - and truly face the dilemma of a certain famous Vulcan proverb. (SI)
StarTrek: Deep Space Nine - Rated: M - English - Sci-Fi/Adventure - Chapters: 12 - Words: 55,344 - Reviews: 195 - Favs: 308 - Follows: 267 - Updated: 10/21/2014 - Published: 3/25/2013 - Jadzia D., B. Sisko
by Naitch03 reviews
While hunting for more ZPM's for Atlantis, Dr. Jackson discovers hints to the location of the Ancient city of Avalon. Little did he know that his discovery would reunite the 13th colony with it's long lost bretheren. Stargate SG1 Atlantis nBSG xover
Crossover - Stargate: SG-1 & Battlestar Galactica: 2003 - Rated: M - English - Adventure/Sci-Fi - Chapters: 18 - Words: 85,517 - Reviews: 397 - Favs: 490 - Follows: 641 - Updated: 9/21/2014 - Published: 9/11/2006 - Cassandra F., J. O'Neill, W. Adama, K. Thrace/Starbuck
by Myrddin le Fay reviews
The world was changing. The magical people didn't notice. Harry Evans had been sent away, banished from the magical world when he was 17 & had a dream too big for the 'light' or the 'dark' wishing to bring magic to all humans. However, he was a genius & though sealed he created technology to build magic. Then with the SGC he envisioned a unified earth to expand into the universe.
Crossover - Stargate: SG-1 & Harry Potter - Rated: M - English - Sci-Fi/Fantasy - Chapters: 13 - Words: 73,408 - Reviews: 503 - Favs: 1,624 - Follows: 1,873 - Updated: 9/6/2014 - Published: 6/18/2012 - [Harry P., Daphne G.] [Astoria G., Draco M.]
Mass Effect: Pieces
by Chemiclord reviews
100 years after Shepard destroyed the Mass Relays, one colony world spared the worst of the conflict finally attempts to reach out and reconnect with the galaxy at large. But nothing is ever all that simple...
Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 67 - Words: 219,341 - Reviews: 407 - Favs: 240 - Follows: 298 - Updated: 8/3/2014 - Published: 3/13/2012
Not Who She Seems
by Children of Darkness reviews
Lily Potter was never Lily Potter, but only James ever knew the truth. And instead of a son, they had a baby girl, Rayna. Upon discovering their sister's death, Thor and Loki swear to protect their niece, when they find her. How will the discovery that she is one of the Aesir change the events after fourth year? Fem/Harry! Complete!
Crossover - Harry Potter & Thor - Rated: T - English - Family/Adventure - Chapters: 32 - Words: 124,149 - Reviews: 1368 - Favs: 3,414 - Follows: 2,799 - Updated: 7/21/2014 - Published: 8/13/2012 - Harry P. - Complete
Stargate: The Tollan
by Shadowburst Enigma reviews
What has happened to the Tollan over the last few years? if they weren't really destroyed, what will they do now? will they become a major presence in the Galaxy? I really hope so. I also hope that there'll be some Sam/Narim. I love the Tollan. They deserve to live on.
Stargate: SG-1 - Rated: T - English - Chapters: 4 - Words: 12,860 - Reviews: 22 - Favs: 28 - Follows: 35 - Updated: 7/17/2014 - Published: 3/16/2014 - Narim, OC
Hannah O'Neill Pt3
by AvaC reviews
The Clone that SG1 got instead of Fruit Basket for saving the world and universe what not returns to Atlantis... what trouble will the girl get herself into now? OC story.. SGA-Season 4 with SG1 characters making appearances! (Warning slightly OCish Ronon.. he talks more..)
Stargate: Atlantis - Rated: M - English - Chapters: 40 - Words: 176,030 - Reviews: 29 - Favs: 37 - Follows: 55 - Updated: 7/7/2014 - Published: 12/5/2011 - OC, S. Carter/Sam, Ronon D., John S.
A Stitch in Time
by cassikat reviews
AU. Dumbledore should never have left Harry on the Dursley's doorstep unattended. Now someone else has found him, and what will become of the Wizarding World with Harry raised by the most pragmatic genius in the universe?
Crossover - Doctor Who & Harry Potter - Rated: T - English - Adventure/Mystery - Chapters: 14 - Words: 53,661 - Reviews: 290 - Favs: 1,399 - Follows: 1,754 - Updated: 6/12/2014 - Published: 6/11/2011 - The Rani, Harry P.
Mystery Of The Veil
by Shadowz101 reviews
When Sirius fell through the Veil, his sacrifice invoked powerful magic. Lily, now back from the dead, has vowed to guide Harry and keep him alive through the coming darkness. Armed with a loving mother, knowledge, and another ally returned from Death, will Harry finally get the life he's always wanted? Chapters 1-5 reposted and Beta'd
Harry Potter - Rated: M - English - Family/Adventure - Chapters: 15 - Words: 158,342 - Reviews: 517 - Favs: 1,440 - Follows: 1,805 - Updated: 4/26/2014 - Published: 2/8/2013 - Harry P., Lily Evans P., OC, Helena R.
Stargate: The Second Great Alliance
by Seraphin2011 reviews
With the Second Great Alliance finally being formed, the Guardians, the Terrans, the Asgard and the Nox are set out to bring everlasting peace and prosperity to the region of space they inhabit. A task not easy to accomplish when faced by so many, old and new, enemies constantly trying to destroy them with every means at their disposal.
Stargate: SG-1 - Rated: T - English - Sci-Fi/Adventure - Chapters: 41 - Words: 458,068 - Reviews: 599 - Favs: 444 - Follows: 450 - Updated: 4/3/2014 - Published: 9/14/2012 - J. O'Neill
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: 280 - Favs: 522 - Follows: 587 - Updated: 1/4/2014 - Published: 9/19/2012
The Will of the Force
by SapOzh reviews
It's a time travel story about Revan and Mission. They find themselves about four thousand years in the future with the Star Forge still intact.
Crossover - Star Wars & Star Wars - Rated: T - English - Sci-Fi/Adventure - Chapters: 10 - Words: 33,655 - Reviews: 290 - Favs: 708 - Follows: 865 - Updated: 1/3/2014 - Published: 12/11/2011 - Padmé Amidala, Revan, Mission V.
Harry Potter and the Deus Ex Machina
by Karmic Acumen reviews
It was a normal day, until newly turned 8 year-old Harry Potter decided to make a wish upon the dog star (even though he'd almost never actually seen it) and set off something in the Unlabeled Room in the Department of Mysteries. Turns out Dumbledore was wrong. Again. It wasn't love that the Unspeakables were studying down there.
Harry Potter - Rated: T - English - Adventure/Supernatural - Chapters: 22 - Words: 292,433 - Reviews: 856 - Favs: 2,399 - Follows: 1,398 - Updated: 12/22/2013 - Published: 1/10/2013 - Harry P., Sirius B., Regulus B., Marius B. - Complete
by Lord Silvere reviews
Harry is a prisoner, and Bellatrix has fallen from grace. The accidental activation of Bella's treasured heirloom results in another chance for Harry. It also gives him the opportunity to make the acquaintance of the young and enigmatic Bellatrix Black as they change the course of history.
Harry Potter - Rated: T - English - Chapters: 46 - Words: 392,449 - Reviews: 7108 - Favs: 10,288 - Follows: 7,237 - Updated: 9/21/2013 - Published: 11/14/2009 - Harry P., Bellatrix L. - Complete
The Empire of the Alterra
by Lord Alterran reviews
The IOA is plotting something disastrous. Something that could have repercussions on all of Earth and Atlantis. Sheppard and McKay take matters into their own hands and as a result begin to build the largest intergalactic empire since the Alterrans. AN: Long term postponement, will not be updated for a long time
Stargate: Atlantis - Rated: T - English - Adventure/Sci-Fi - Chapters: 5 - Words: 8,800 - Reviews: 57 - Favs: 63 - Follows: 77 - Updated: 7/22/2013 - Published: 6/29/2012 - Rodney M., John S.
Past and Future Collide
by Razial reviews
Anakin's future becomes more and more clouded, as some unexpected allies show up during the Clone Wars.
Crossover - Star Wars & Star Wars: The Clone Wars - Rated: T - English - Adventure - Chapters: 17 - Words: 58,542 - Reviews: 187 - Favs: 409 - Follows: 427 - Updated: 6/20/2013 - Published: 10/26/2010 - Revan, Anakin S.
Now is the Winter of Our Discontent
by jrrm64 reviews
AU. What if T'Pol left the ship before the Expanse and Archer died while in the Expanse. The fate of the Federation changes in many ways.
StarTrek: Enterprise - Rated: T - English - Adventure/Romance - Chapters: 27 - Words: 83,096 - Reviews: 245 - Favs: 59 - Follows: 44 - Updated: 6/17/2013 - Published: 1/19/2013 - T'Pol, C. Tucker - Complete
Harry Potter and the Accumulation of Power
by Zyachta reviews
In the Chamber of Secrets, the basilisk venom had already been in his system for several minutes before Fawkes healed him, what if Fawkes was too late ? Super!Harry / Harry/Many / Gray Harry, rating for later chapters.
Harry Potter - Rated: M - English - Chapters: 20 - Words: 80,225 - Reviews: 1364 - Favs: 3,936 - Follows: 4,579 - Updated: 4/28/2013 - Published: 6/18/2011 - Harry P., Fawkes
Wisdom of a seer
by kalinzar reviews
About a week before halloween James decides to consult a real seer about the prophecy. This has some interesting results. Very different timeline, but canon characters. Read and find out what real foreknowledge can do:
Harry Potter - Rated: T - English - Fantasy/Family - Chapters: 69 - Words: 260,076 - Reviews: 1154 - Favs: 839 - Follows: 1,153 - Updated: 4/28/2013 - Published: 4/13/2012 - James P., Harry P.
The Return of the Marauders
by TheLastZion reviews
James sacrificed himself to save his wife and son. Sirius took them into hiding and trained Harry the Marauders way. Neville became the BWL. That doesn't mean that he's the Chosen One. This is a AU story. Harry/Ginny MA Rating
Harry Potter - Rated: M - English - Romance/Adventure - Chapters: 56 - Words: 369,854 - Reviews: 2808 - Favs: 4,205 - Follows: 2,971 - Updated: 1/29/2013 - Published: 3/30/2010 - Harry P., Ginny W. - Complete
by jacobds reviews
After saving the stone Harry is approached by Oma Desala, and is told that he is the subject of two different prophecies but one is currently blocking the other. He is given a chance to change his path and fulfill both destinies. Smart/Powerful Harry
Crossover - Harry Potter & Stargate: Atlantis - Rated: M - English - Adventure/Sci-Fi - Chapters: 41 - Words: 206,427 - Reviews: 2752 - Favs: 3,903 - Follows: 3,210 - Updated: 11/18/2012 - Published: 4/28/2010 - Harry P. - Complete
Mass Effect: A New History
by Bombsquad reviews
A continuation of the 'A new Past' story arch. The Alliance and Citadel have an uneasy peace...and the Alliance's safety and security is threated from without and from within, by extremists and terrorists...and one being whose mind is subverted.
Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 7 - Words: 68,896 - Reviews: 162 - Favs: 541 - Follows: 553 - Updated: 9/8/2012 - Published: 5/23/2011 - Nihlus K.
Stargate: The Guardian's Order
by Seraphin2011 reviews
The story follows the advantures of Liam, an Alterran who decides to leave the higher plane of existance in order to take care of the many mistakes his race made before ascending.
Stargate: SG-1 - Rated: T - English - Sci-Fi/Adventure - Chapters: 16 - Words: 267,262 - Reviews: 134 - Favs: 381 - Follows: 258 - Updated: 8/6/2012 - Published: 4/16/2012 - J. O'Neill - Complete
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: 1290 - Favs: 613 - Follows: 433 - Updated: 4/16/2012 - Published: 4/29/2011 - Complete
by Amerie0227 reviews
Home is the place where when you have to go there, they have to take you in-right? At least that's what Buffy had hoped, but when she returned to the Wizarding World she had left it wasn't exactly all proverb-y as she had liked
Buffy X-overs - Rated: K - English - Chapters: 73 - Words: 350,153 - Reviews: 751 - Favs: 223 - Follows: 192 - Updated: 10/31/2011 - Published: 1/12/2008 - Complete
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: 413 - Favs: 762 - Follows: 799 - Updated: 10/23/2011 - Published: 2/19/2010 - Shepard (F)
30 Minutes II: The Gathering Storm
by Radaslab reviews
Harry & Co. enter Hogwarts. Dumbledore is not faced with a pawn. Voldemort is not faced with fertile ground. The world is about to change as war and revolution are in the air. Sequel.
Harry Potter - Rated: T - English - Adventure/Friendship - Chapters: 16 - Words: 142,208 - Reviews: 1979 - Favs: 2,799 - Follows: 3,376 - Updated: 10/16/2011 - Published: 10/31/2009 - Harry P., Hermione G.
The Quantum Gate: Prologue
by ChaosCarlos reviews
AU. Set 20 years after Season 8. The Ori fleet has decimated the Milk Way and Ida Galaxies, in one last desperate attempt, the Tau'ri, Asgard, Jaffa and Tok'ra plan to escape through a Quantum Gate to a reality free of their enemies. Multi-Crossover.
Stargate: SG-1 - Rated: T - English - Sci-Fi/Adventure - Chapters: 8 - Words: 26,614 - Reviews: 140 - Favs: 255 - Follows: 230 - Updated: 10/12/2011 - Published: 2/5/2009 - Complete
Child of the Ancients
by Marcus S. Lazarus reviews
The discovery of the Alterean counterpart to the Orici changes the entire course of Earth's war with the Ori and the Wraith, as well as revealing a secret of Sam and Daniel's past that not even they knew -SamDaniel, Atlantis X-over and ShWeir-
Stargate: SG-1 - Rated: T - English - Drama/Romance - Chapters: 47 - Words: 183,477 - Reviews: 432 - Favs: 208 - Follows: 222 - Updated: 7/18/2011 - Published: 8/17/2006 - [D. Jackson, S. Carter] - Complete
New Lantean Chronicles: Lost City Found
by Chiara Crawford reviews
After five years of having no contact with Earth, the Earth-born New Lanteans are reunited with the Tau'ri. But five years in a different galaxy changes people, sometimes irrevocably. Full summary inside.
Crossover - Stargate: SG-1 & Stargate: Atlantis - Rated: M - English - Adventure - Chapters: 20 - Words: 96,043 - Reviews: 121 - Favs: 290 - Follows: 226 - Updated: 6/3/2011 - Published: 4/7/2009 - Elizabeth W. - Complete
This should never have happened
by skipper 1337 reviews
Due to an accident and a first contact gone horribly wrong the Colonies of Kobol attempt to invade Earth. But there's more out there than just a measly thirteen planets! Back with Chapter 9!
Crossover - Stargate: SG-1 & Battlestar Galactica: 2003 - Rated: T - English - Drama/Sci-Fi - Chapters: 11 - Words: 129,649 - Reviews: 406 - Favs: 284 - Follows: 336 - Updated: 5/14/2011 - Published: 3/3/2010
The Last Jedi
by Darth Marrs reviews
There are no Jedi; no Sith. There are Abnormals—persons born with a midi-chlorian count proscribed at a dangerous level by the Galactic Empire. Those persons are euthanized immediately upon discovery. That is, until they come for the son of the last Jedi.
Star Wars - Rated: T - English - Sci-Fi/Fantasy - Chapters: 46 - Words: 184,903 - Reviews: 1132 - Favs: 832 - Follows: 388 - Updated: 3/24/2011 - Published: 1/30/2010 - Complete
Harry Potter and the Root of all Evil
by Baron Von Anarchy IV reviews
HP/RR time travel fic. During Harry's limbo trip in the Forbidden Forest, Harry is faced with two choices; to die, or be sent back 1000 years to stop the Root of All Evil before it can manifest itself. Harry chooses to live and emerges in the unknown
Harry Potter - Rated: M - English - Adventure/Fantasy - Chapters: 15 - Words: 135,679 - Reviews: 660 - Favs: 1,821 - Follows: 1,787 - Updated: 2/27/2011 - Published: 12/7/2009 - Harry P., Rowena R.
Heir to the Empire: Lost in Time
by Arxanti reviews
The Republic is strugling through the corruption of the Senate, the Trade Federation blockades Naboo and a Sith Lord is waking to a new galaxy, a Sith Lord that has been forgotten and lost.
Crossover - Star Wars & Star Wars - Rated: M - English - Adventure/Romance - Chapters: 19 - Words: 80,779 - Reviews: 147 - Favs: 610 - Follows: 327 - Published: 3/30/2010 - Padmé Amidala - Complete
by KathainBowen reviews
Earth is a dead world, culled and brought to its knees by the Wraith. But when one comes calling three years later with the offer to help Sheppard and Ronon find McKay alive in what *used* to be America, it is an offer they cannot refuse.
Stargate: Atlantis - Rated: T - English - Angst/Adventure - Chapters: 14 - Words: 123,566 - Reviews: 77 - Favs: 36 - Follows: 57 - Updated: 3/20/2010 - Published: 12/24/2008
Turning Point: Divergence: Mature Version
by MaureenT reviews
Sequel to Turning Point. When SG-1 find the descendants of Estrania's population, their dire plight leads to a decision that will ultimately alter the course of the future and the battle against the Goa'uld. Daniel/Other. COMPLETE!
Stargate: SG-1 - Rated: M - English - Drama/Romance - Chapters: 32 - Words: 200,341 - Reviews: 282 - Favs: 208 - Follows: 165 - Updated: 2/26/2010 - Published: 8/9/2009 - D. Jackson - Complete
This Time Around
by Idrelle Miocovani reviews
When an old enemy reappears, Jaina Solo and Kyp Durron embark on a dangerous quest through time to save Anakin Skywalker from the dark side. The deepest secrets of the Force slowly unravel as their mission is plagued with evils no one could have foreseen. Cover art by Iverna. Note: this story, in its current state, is unfortunately unfinished and will remain that way.
Star Wars - Rated: T - English - Adventure/Supernatural - Chapters: 60 - Words: 303,347 - Reviews: 633 - Favs: 312 - Follows: 349 - Updated: 11/21/2009 - Published: 3/1/2008 - Jaina S., Kyp D.
by MaureenT reviews
Daniel is transported into the past, where he meets a Goa'uld like no other, one who will play an extraordinary role in history. Will Daniel's presence alter the course of that history or will it lead to something he could never have imagined? COMPLETE.
Stargate: SG-1 - Rated: T - English - Adventure/Drama - Chapters: 20 - Words: 127,240 - Reviews: 437 - Favs: 464 - Follows: 253 - Updated: 8/6/2009 - Published: 2/18/2009 - D. Jackson - Complete
by TheRealThing reviews
Darth Vader finally captures the rebel leader who has thwarted him again and again, Black Widow. The only problem is, she is his wife, who he has believed dead for four years.
Star Wars - Rated: T - English - Drama/Angst - Chapters: 64 - Words: 143,669 - Reviews: 1764 - Favs: 819 - Follows: 337 - Updated: 6/30/2009 - Published: 2/16/2009 - Darth Vader, Padmé Amidala - Complete
Heart of Darkness
by Cka3ka reviews
AU: Vader finds Leia at an early age. Is the redemption of the Dark Lord at hand? Or will the Princess fall into darkness. Follow Leia as she grows up to be a loving daughter, dependable friend, swoop bike fanatic, chic shopaholic, and Sith Lord.
Star Wars - Rated: T - English - Drama/Angst - Chapters: 49 - Words: 215,499 - Reviews: 1665 - Favs: 1,158 - Follows: 933 - Updated: 1/5/2009 - Published: 4/27/2005 - Darth Vader, Leia O.
The Ninth Chevron
by jadedfirefly reviews
Now complete... SG-1 must race to beat Ba'al to a power source capable of dialing a Stargate using a ninth symbol. Set between seasons 8 and 9.
Stargate: SG-1 - Rated: T - English - Adventure/Romance - Chapters: 39 - Words: 127,313 - Reviews: 450 - Favs: 172 - Follows: 94 - Updated: 12/31/2008 - Published: 9/21/2008 - S. Carter, J. O'Neill - Complete
Gods of Dark and Light
by Darth Marrs reviews
What happens when the Ori, a race of godlike ascended beings who are currently rampaging through the Stargate Universe, suddenly arrive in a Galaxy Far Far Away? Any who do not follow the path of Origin must be destroyed.
Crossover - Star Wars & Stargate: SG-1 - Rated: T - English - Sci-Fi/Fantasy - Chapters: 41 - Words: 122,474 - Reviews: 340 - Favs: 531 - Follows: 181 - Updated: 8/6/2007 - Published: 4/28/2007 - Luke S., Thor - Complete