Stargate: SG-1 and Halo Crossovers
Rebirth of the UNSC by ultimate Deathsaurer 2 reviews
Reach has Fallen and the Pillar of Autumn has set a course to earth but not the earth they remember. Adopted from Original Owner: Samsara Sage
Rated: T - English - Sci-Fi/Adventure - Chapters: 12 - Words: 39,415 - Reviews: 106 - Favs: 192 - Follows: 243 - Updated: 12/24/2015 - Published: 10/12/2014
Ragnarok by Redsquadron reviews
The 'metastability event' destroyed everything, not even sparing space-time itself. The past conflicts with the present, as alternate realities fight one another either out of opportunistic ideals, or simply out of fear. Humanity is in the midst of it all, in a universe gone mad. But hey, what can't the Reclaimers, or the Fifth-race survive?[Multcrossover]
Rated: T - English - Sci-Fi/Supernatural - Chapters: 3 - Words: 9,189 - Reviews: 56 - Favs: 81 - Follows: 102 - Updated: 12/6/2015 - Published: 7/29/2013 - S. Carter, J. O'Neill, Prophet of Truth, T. Hood
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.
Rated: T - English - Sci-Fi/Adventure - Chapters: 8 - Words: 206,461 - Reviews: 244 - Favs: 673 - Follows: 764 - Updated: 12/1/2015 - Published: 7/15/2013
Halo: Interstellar War by Merodach the Original Sin reviews
The UEG has been exploring and colonizing the Milky Way galaxy for centuries, growing and developing in isolation. It is only when they find a Stargate that humanity realizes that they aren't alone in the universe. Many great wonders and opportunities along with equally great dangers and secrets are revealed at the dawn of the first interstellar war in Earth's recorded history. AU
Rated: T - English - Sci-Fi/Adventure - Chapters: 1 - Words: 11,001 - Reviews: 35 - Favs: 108 - Follows: 153 - Published: 10/9/2015 - S. Carter, J. O'Neill, Master Chief/John-117, C. Halsey
The Long Road Home by FuzyDr4G0NZ reviews
A UNSC battle group, led by an experimental battleship, end up stuck in the middle of a bitter war between Stargate Command and the Goa'uld. Will the Veterans from one war of survival be able to stop the insidious parasites and the other bad guys that follow after them?
Rated: T - English - Sci-Fi/Adventure - Chapters: 4 - Words: 17,397 - Reviews: 70 - Favs: 180 - Follows: 294 - Updated: 9/8/2015 - Published: 12/14/2012 - S. Carter, J. O'Neill, M. Sullivan
Halo: The Ori War by DX1998 reviews
7 Months Ago...the USS Odyssey vanished without a trace. Seven long months, that saw the Ori march almost unopposed through the Milky Way Galaxy. With none able to stand against them, the armies of Origin were triumphant in all battles. But the Odyssey has returned, and with the aid of the UNSC and Sangheili, they will bring the fight to the Ori.
Rated: T - English - Adventure/Drama - Chapters: 12 - Words: 50,548 - Reviews: 425 - Favs: 642 - Follows: 828 - Updated: 7/12/2015 - Published: 10/7/2014
Destiny Trapped by Jochern reviews
The Phoenix gets flung through a wormhole and ends up in an unknown galaxy in a war between the Covenant and UNSC. They were transporting Bra'tac and Rya'c to a meeting. Colonel Jade Kavanagh knowns neutrality isn't going to hold if they want to survive in the long run and get home. Takes place after the Ori loses somewhere in the timeline.
Rated: K+ - English - Tragedy/Sci-Fi - Chapters: 10 - Words: 12,812 - Reviews: 43 - Favs: 81 - Follows: 121 - Updated: 7/12/2015 - Published: 2/1/2015 - Braítac, J. O'Neill, R. McKay, J. Keyes
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 the cruiser is in a new reality, and a new war. Can they help their cousins in the UNSC? Or will the Covenant prevail?
Rated: T - English - Adventure - Chapters: 29 - Words: 104,009 - Reviews: 727 - Favs: 809 - Follows: 891 - Updated: 10/7/2014 - Published: 1/17/2013 - S. Carter, Master Chief/John-117 - Complete
Rebirth of the UNSC by Samsara Sage reviews
Reach has Fallen and the Pillar of Autumn has set a course to earth but not the earth they remember.
Rated: T - English - Chapters: 14 - Words: 17,519 - Reviews: 137 - Favs: 210 - Follows: 261 - Updated: 10/1/2014 - Published: 5/3/2012
Stargate 117 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.
Rated: T - English - Sci-Fi/Adventure - Chapters: 6 - Words: 37,433 - Reviews: 213 - Favs: 359 - Follows: 460 - Updated: 8/15/2014 - Published: 10/7/2013
HaloGate: A Spartan's Test by Caedous reviews
After being engaged by Covenant forces, Spartan Lieutenant Commander Tom-292 is forced to make an emergency jump into slipspace. Upon his exit however he is confronted by... Earth. Just not the Earth he knows. Now he and his A.I. Hrothgar must quickly adapt to a situation that gets stranger and stranger by the second.
Rated: K - English - Sci-Fi - Chapters: 2 - Words: 2,741 - Reviews: 20 - Favs: 35 - Follows: 64 - Updated: 2/4/2014 - Published: 2/2/2014
The Fifth Race meets the Reclaimers by firstprime1230 reviews
After the defeat of the Goa'uld and the Wraith in a civil war, Earth decides to send out the USS George Hammond to a new galaxy where the Ancients were said to have met an advanced race the rivaled themselves. But when they arrive they discover a galaxy at war, and another enemy that causes them to step back into the action less they spread to other parts of the universe.
Rated: T - English - Chapters: 2 - Words: 12,505 - Reviews: 69 - Favs: 201 - Follows: 264 - Updated: 11/18/2013 - Published: 11/9/2013
A Change of Fate: Codex by DX1998 reviews
Entries into the SGC/UNSC Codex. Companion to the main story, all technological aspects are included here.
Rated: T - English - Sci-Fi - Chapters: 4 - Words: 3,205 - Reviews: 29 - Favs: 33 - Follows: 38 - Updated: 9/11/2013 - Published: 8/21/2013
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.
Rated: T - English - Sci-Fi/Adventure - Chapters: 6 - Words: 18,856 - Reviews: 77 - Favs: 126 - Follows: 189 - Updated: 8/17/2013 - Published: 8/26/2012 - J. O'Neill, Rookie
StargateHalo: Nexus Point by Evident Disaster reviews
SG-1 takes an unexpected trip to a world where they discover an ancient alien outpost, but it isn't as empty as they thought it would have been. The close encounter with an alternate universe. The UCAF joins the greater galaxy of the Stargate universe. New story, join in the fun! Sorry uploaded a mixed file. I've corrected it now.
Rated: T - English - Adventure/Sci-Fi - Chapters: 1 - Words: 8,930 - Reviews: 9 - Favs: 33 - Follows: 40 - Published: 6/14/2013
Ultimatum- Part 2 by GradualHail6758 reviews
This is what happens when the Spartans we ended with in Ghosts of Onyx find themselves in separate worlds where magic is real, technology is slow, heroes exist, and the missing could be closer than you think. Based off the characters from the books, games, cartoons, comics, tv series and movies that make up this web of worlds.
Rated: T - English - Adventure - Chapters: 1 - Words: 2,938 - Reviews: 1 - Favs: 2 - Follows: 7 - Published: 5/16/2013
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.
Rated: T - English - Adventure/Sci-Fi - Chapters: 3 - Words: 7,167 - Reviews: 46 - Favs: 70 - Follows: 95 - Updated: 1/29/2013 - Published: 11/3/2012
Halo Stargate by jaller-skirata reviews
l'UNSC a retrouvé sa place dans la galaxie,mais un mystérieux vaisseau venant d'une autre Terre apporte avec lui un ennemi encore pire que tout ce que l'UNSC avait combattu jusqu'alors. Humains, Covenants...tous seront touchés par cette nouvelle guerre.
Rated: T - French - Sci-Fi/Adventure - Chapters: 5 - Words: 6,002 - Reviews: 8 - Favs: 4 - Follows: 6 - Updated: 11/27/2011 - Published: 10/22/2011 - C. Mitchell
Reclaiming the Mantle by Lord Hierarch reviews
We are the last of those who gave their lives to protect this galaxy. Your time is at an end - we have come to reclaim the Mantle you forsook. We are the Forerunners. This is our answer.
Rated: T - English - Chapters: 1 - Words: 1,416 - Reviews: 17 - Favs: 29 - Follows: 29 - Published: 10/7/2011 - Complete
Consequences of War by Lord Hierarch reviews
Reach has fallen, and humanity is on its death bed. The Pillar of Autumn has fled and is returning to Earth. On Earth, mankind is taking its first step out into the galaxy... through the Stargate.
Rated: T - English - Chapters: 16 - Words: 31,924 - Reviews: 221 - Favs: 205 - Follows: 259 - Updated: 5/12/2011 - Published: 8/3/2010
Halo SG1: Heroes in the making by SLAYERMT reviews
What happens when the Reds find a star gate? Complete insanity of Epic proportions. The Blues get a new team member who knows how to fight, And Simmons finds some one who isn't bored to death about worm hole theory.
Rated: T - English - Humor/Adventure - Chapters: 1 - Words: 345 - Reviews: 6 - Favs: 3 - Follows: 5 - Published: 4/3/2011
Halogate by Chris7221 reviews
AU/Crossover; The Covenant, a religious alliance, has declared war on humanity. Among their defenses is the recently-formed SGC, a branch of the military that uses a device called a Stargate which allows instant interplanetary travel.
Rated: T - English - Sci-Fi - Chapters: 12 - Words: 21,665 - Reviews: 25 - Favs: 39 - Follows: 45 - Updated: 9/20/2010 - Published: 5/13/2010 - Complete