Stargate: SG-1 and Halo Crossovers
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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: 16 - Words: 66,095 - Reviews: 259 - Favs: 524 - Follows: 644 - Updated: 6/20/2021 - Published: 10/12/2014
Stargate:Spartan Siege by Johnnieboy11 reviews
After the battle on Mantle's Approach, the Chief finds himself, alongside a non-rampant Cortana, helping the Humans of a galaxy similar, yet different to his own, battle their enemies, while exploring the countless worlds tied together by a network of ancient portals and uncovering the mysteries surrounding these worlds.
Rated: T - English - Adventure/Sci-Fi - Chapters: 4 - Words: 14,884 - Reviews: 46 - Favs: 259 - Follows: 398 - Updated: 3/11/2021 - Published: 12/24/2020 - D. Jackson, J. O'Neill, Teal'c, Master Chief/John-117
The Fifth-Race Reclaimers: Upheaval by Piero217 reviews
Over the course of eight months following their triumph over the Precursor threat, the Fifth-Race Reclaimers have been working hard to learn more about each other and their respective galaxies—sometimes without the other side even knowing. But with a new threat looming on the horizon, will they be prepared to defend every living creature they have been entrusted with?
Rated: T - English - Sci-Fi/Drama - Chapters: 2 - Words: 3,799 - Reviews: 8 - Favs: 63 - Follows: 89 - Updated: 1/23/2021 - Published: 6/8/2019 - S. Carter, D. Jackson, Teal'c, Arbiter
In Fire Forged (StargateHalonBSG fusion) by Illuviar reviews
The Supreme System Lord Ra has been missing for a year, the System Lords are straining their bonds, at a perilous time. The alien Covenant has proclaimed the Goa'uld and their servants, as False Gods and Heretics to be exterminated. Meanwhile, the beleagued UNSC struggles for survival, while the 12 Colonies of Kobol are none the wiser about the dangers lurking in the dark...
Rated: T - English - Sci-Fi/Adventure - Chapters: 6 - Words: 21,458 - Reviews: 23 - Favs: 95 - Follows: 122 - Updated: 12/9/2020 - Published: 10/23/2020
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: 7 - Words: 37,601 - Reviews: 251 - Favs: 489 - Follows: 582 - Updated: 3/12/2020 - Published: 10/7/2013
Humanity's Resurgence by Strikefreedom10 reviews
Two different humanity's. Both pushed around by aliens for far too long. Together, they shall show this third universe that humanity is not to be underestimated.
Rated: T - English - Sci-Fi/Adventure - Chapters: 4 - Words: 26,768 - Reviews: 94 - Favs: 230 - Follows: 276 - Updated: 8/17/2019 - Published: 4/1/2019 - S. Carter, J. O'Neill, Master Chief/John-117, T. Hood - Complete
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 now...now 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: 15 - Words: 60,674 - Reviews: 531 - Favs: 977 - Follows: 1,245 - Updated: 8/7/2019 - Published: 10/7/2014
Merged Galaxy Part 1: Tenuous Pacts by Slipspace Anomaly reviews
Nations collide as 2 alternate versions of the Milky Way Galaxy are joined into 1. As members of the SGC and the UNSC struggle to establish peaceful relations, a new threat emerges. One that includes new enemies from each of their pasts. Co-written with Jon Harper.
Rated: T - English - Chapters: 21 - Words: 164,926 - Reviews: 214 - Favs: 321 - Follows: 415 - Updated: 10/8/2018 - Published: 1/30/2017 - H. Maybourne, OC, Master Chief/John-117, C. Halsey
Side Trip by Chris000 reviews
Travel to different universes has the potential for unforeseen encounters. Major Kevin Sowell of the UNSC, the commanding officer of the Wolfhound Expedition unit, has arrived in just such an encounter. Eager to show he is not a threat, Sowell will have to take another trip to save a unit of pinned down Airmen. This is a Chaos Chronicles Short Story.
Rated: T - English - Sci-Fi/Adventure - Chapters: 3 - Words: 7,616 - Reviews: 2 - Favs: 26 - Follows: 41 - Published: 4/1/2018 - D. Jackson, Gen. Landry, OC
Gateway by Commander Kelec reviews
In 2020 the Stargate program has gone public and there is a fragile alliance between Earth, the UNSC, the Free Jaffa and the Sword of Sanghelios. Chaos is ripping at the galaxy and it wouldn't take much to break.
Rated: T - English - Sci-Fi/Friendship - Chapters: 6 - Words: 17,599 - Reviews: 8 - Favs: 17 - Follows: 22 - Updated: 3/12/2018 - Published: 1/26/2018 - J. O'Neill, C. Mitchell, T. Hood
Gateway Codex by Commander Kelec reviews
The codex in preparations for the new version of Gateway. Facts and historical events explaining how the galaxy looks as the story begins.
Rated: K - English - Sci-Fi - Chapters: 2 - Words: 1,494 - Reviews: 1 - Favs: 6 - Follows: 5 - Updated: 1/27/2018 - Published: 1/25/2018
Halo Gateway (Old Version) by Commander Kelec reviews
Major June Cooper is returning to active duty as General Jack O'Neill takes command of the SGC. The year is 2020 and new threats loam on the horizon. Alternative Universe story where the Halo and Stargate races are in the same galaxy.
Rated: T - English - Sci-Fi/Friendship - Chapters: 6 - Words: 16,827 - Reviews: 5 - Favs: 24 - Follows: 20 - Updated: 11/19/2017 - Published: 4/26/2017 - J. O'Neill, Teal'c, C. Mitchell
Halo: Interstellar War by Merodach the Original Sin reviews
The UEG has been exploring the Milky Way galaxy for centuries, expanding and developing in isolation. It is only when the UNSC finds a Stargate that humanity learns that they aren't alone amongst the stars. Many wondrous mysteries and dangerous secrets are revealed at the dawn of the first interstellar war in human history with an alien foe.
Rated: T - English - Adventure - Chapters: 1 - Words: 10,993 - Reviews: 24 - Favs: 135 - Follows: 161 - Published: 10/30/2016 - S. Carter, J. O'Neill, Master Chief/John-117, C. Halsey
Universal Journey by Jochern reviews
A new version of "Destiny trapped". The USS Aleppo and five Ha'tak under Bra'tac was flung into an alternative universe when pulled into a wormhole. They found themselves in the middle of a major conflict and Lt. Colonel Adriana Callahan, Doctor Rodney McKay and Richard Woolsey had to try getting her crew home in one piece. (AU)
Rated: T - English - Hurt/Comfort/Suspense - Chapters: 21 - Words: 67,918 - Reviews: 50 - Favs: 47 - Follows: 64 - Updated: 7/30/2016 - Published: 3/23/2016 - Braítac, R. Woolsey, R. McKay
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: 303 - Favs: 897 - Follows: 997 - Updated: 12/1/2015 - Published: 7/15/2013
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: 77 - Favs: 258 - Follows: 382 - Updated: 9/8/2015 - Published: 12/14/2012 - S. Carter, J. O'Neill, M. Sullivan
Destiny Trapped by Jochern reviews
This story has started over with "Universal Journey" with better writing and hopefully with a better storyline.
Rated: K+ - English - Tragedy/Sci-Fi - Chapters: 10 - Words: 12,812 - Reviews: 44 - Favs: 85 - Follows: 128 - Updated: 7/12/2015 - Published: 2/1/2015 - Braítac, J. O'Neill, R. McKay, J. Keyes - 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?
Rated: T - English - Adventure - Chapters: 29 - Words: 104,009 - Reviews: 771 - Favs: 1,065 - Follows: 1,032 - Updated: 10/7/2014 - Published: 1/17/2013 - S. Carter, Master Chief/John-117 - Complete
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: 22 - Favs: 42 - Follows: 71 - Updated: 2/4/2014 - Published: 2/2/2014
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: 32 - Favs: 45 - Follows: 42 - 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: 78 - Favs: 158 - Follows: 229 - 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: 45 - Follows: 48 - 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: 5 - Follows: 9 - 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: 77 - Follows: 99 - 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
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