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The Lost Civilization
by Apollonir reviews
After the Battle of the Ark, a UNSC Pelican dropship crash lands on Thessia. Two ODSTs survive the crash and make contact with primitive Asari. Ninety thousand years later, Liara T'Soni discovers a strange looking aircraft and Human remains in an ancient cave burial chamber. The discovery she makes will take the Asari on a journey to discover their true lineage.
Crossover - Halo & Mass Effect - Rated: T - English - Mystery/Suspense - Chapters: 6 - Words: 11,638 - Reviews: 280 - Favs: 725 - Follows: 1,084 - Updated: 11/13 - Published: 7/2 - Ashley W., Liara T'Soni, Mordin S., Shepard (M)
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: 33 - Words: 328,276 - Reviews: 1162 - Favs: 1,702 - Follows: 2,170 - Updated: 11/6 - Published: 3/27/2011 - Master Chief/John-117, Tali'Zorah, Miranda L., Shepard (M)
Halo: Finishing the Fight
by Red Mage 04 reviews
The Ark wasn’t the end. Stranded on an alien world where the rules of reality no longer apply, the Master Chief and his allies will face new challenges. When darkness rises, they must show that sometimes, a few brave souls can make all the difference.
Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 46 - Words: 389,135 - Reviews: 890 - Favs: 1,213 - Follows: 1,034 - Updated: 10/22 - Published: 3/2/2008 - Master Chief/John-117, A. J. Johnson
Enduring the Flames of War
by Masterdude21 reviews
A joint Asari-Turian operation salvaged a "package" from a derelict wreckage in the Terminus Systems, whereupon they release a force of war beyond their reckoning. Hoping to avoid another war, Commander Shepard recruits the "package" into her team. A simple act of kindness, unwittingly paving the way for a clash unlike the universe has ever seen. Fate directs the flames of war.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Horror - Chapters: 18 - Words: 198,651 - Reviews: 820 - Favs: 1,571 - Follows: 2,074 - Updated: 9/1 - Published: 11/30/2015 - Master Chief/John-117, OC, Shepard (F)
The Last Spartan
by DinoJake reviews
An AU fic in which the Halo and ME universes share the same galaxy. After a well deserved rest in Cryo-Sleep, Master Chief finally awakens...to a whole new galaxy.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 51 - Words: 461,909 - Reviews: 3524 - Favs: 3,364 - Follows: 3,449 - Updated: 1/1 - Published: 5/2/2010 - Master Chief/John-117
Loved By the Monster Girls
by Gamer95 reviews
One night, Harry makes a wish in his cupboard for one simple thing...A family. Little does he know, this innocent action will come to fruition, in the form of a lamia, a harpy, a centaur, a slime, a mermaid, an arachne, a dullahan, and a human uncle as well. These seven women all grow to love him in their own way...But are they willing to share and cooperate?
Crossover - Harry Potter & Daily Life with a Monster Girl/モンスター娘のいる日常 - Rated: T - English - Family/Hurt/Comfort - Chapters: 6 - Words: 25,798 - Reviews: 181 - Favs: 607 - Follows: 635 - Updated: 2/5/2016 - Published: 8/18/2015
Harry Potter and the Ultimate Force
by DarkKing666 reviews
Asgard monitors all issued Prophecies quite closely. Occasionally, somebody needs to step in for some hands-on corrective action...
Crossover - Harry Potter & Oh My Goddess! - Rated: M - English - Adventure/Fantasy - Chapters: 22 - Words: 151,512 - Reviews: 944 - Favs: 2,387 - Follows: 2,342 - Updated: 10/24/2015 - Published: 2/17/2012 - Harry P., Belldandy, Urd, Skuld - Complete
by lone wolf legendary reviews
Over the course of the Fall of Reach, billions died to the Covenant, but some managed to survive. This is the story of one such group of survivors who after escaping reach, find themselves crash landed on a planet where the greatest threat to humanity is not the Covenant... but Titans. How will the adapt and who can they trust.
Crossover - Halo & Shingeki no Kyojin/進撃の巨人 - Rated: M - English - Adventure/Horror - Chapters: 9 - Words: 39,704 - Reviews: 126 - Favs: 234 - Follows: 265 - Updated: 5/26/2015 - Published: 1/10/2014 - SPARTAN-B312/Noble Six, Eren Y., Erwin Smith, Levi
by General Rage reviews
Fleeing from the glassing of Reach in the belly of the Pillar of the Autumn, the crew of the SR-2 Normandy find themselves stranded with their UNSC allies on a strange Forerunner constructed ring world called Halo with the Covenant hunting them. But Halo holds a secret, one deadlier than both the Covenant and Reapers combined... and it's hungry.
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Horror - Chapters: 38 - Words: 890,040 - Reviews: 994 - Favs: 580 - Follows: 530 - Updated: 1/28/2015 - Published: 11/5/2012 - Master Chief/John-117, Shepard (M) - Complete
Star Wars: The Rise of Reach
by SpartanPrime101 reviews
Following the discovery of the ravaged planet of Harvest, a joint Jedi-Mandalorian Taskforce set out to aid the UNSC against the Covenant onslaught...and to re-shape the fate of the galaxy forever. Adventure/Sci-Fi
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 2 - Words: 5,210 - Reviews: 43 - Favs: 116 - Follows: 136 - Updated: 10/7/2014 - Published: 3/1/2014 - Anakin Skywalker, Ahsoka T., Master Chief/John-117, SPARTAN-B312/Noble Six
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: 640 - Favs: 869 - Follows: 1,169 - Updated: 4/30/2014 - Published: 12/22/2012
Reclaiming the Remnants
by pbluekan reviews
One hundred years after the Reaper's harvest, the remaining inhabitants of the galaxy are running for their lives and searching for a new home. When a lone vessel enters an area denied to the Reaper's harvest, they make contact with a race that could end the cycle for all time and return the galaxy to its former glory. Rated M for language.
Crossover - Halo & Mass Effect - Rated: M - English - Tragedy/Adventure - Chapters: 1 - Words: 13,140 - Reviews: 68 - Favs: 323 - Follows: 477 - Published: 2/9/2014
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: 2402 - Favs: 1,356 - Follows: 924 - Updated: 6/9/2012 - Published: 10/5/2010 - Shepard (F) - Complete
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Attack on Titan: Spartan Assault (Looking for Beta Readers) reviews
Humanity is under siege. For 107 years, they have been forced to cower behind their walls in the face of the greatest threat they have ever known; the Titans. But, in their darkest hour, help arrives from the stars. John-117 may be able to change the tide of war, but new threats lay beyond the horizon, and it's not just the flesh eating giants he has to worry about. (Ch 2 Updated)
Crossover - Halo & Shingeki no Kyojin/進撃の巨人 - Rated: M - English - Horror/Sci-Fi - Chapters: 3 - Words: 12,813 - Reviews: 284 - Favs: 507 - Follows: 660 - Updated: 7/22 - Published: 9/20/2013 - Master Chief/John-117, Cortana, Eren Y., Mikasa A.
From Heir to Familiar reviews
When Louise the Zero wanted to summon a familiar that could strike fear into the hearts of Dragons, she got exactly what she wanted, even if it was in a form that she wasn't quite expecting. Pulled from the Throat of the World, Wulfgar Iron-Fist, now sole heir to the Ruby Throne, must put up with an annoying brat in a land where magic is everything, and true honor means nothing...
Crossover - Elder Scroll series & Familiar of Zero - Rated: M - English - Friendship/Fantasy - Chapters: 2 - Words: 13,260 - Reviews: 27 - Favs: 131 - Follows: 185 - Updated: 9/12/2015 - Published: 9/2/2015