490Star Burst of Sector 2814 » by BigTofu When I woke up with a Green Lantern Ring, I was not expecting this type of adventure.
Avengers, M, English, Adventure, chapters: 20, words: 98k+, favs: 2k+, follows: 2k+, updated: 3/19 published: 12/25/2021, Black Widow/Natasha R., OC, Nick F.
459 Only In Death Does Duty End » by Cypher1597 Spartans are the protectors of humanity. Headhunters are the sword of humanity. Both are required to fight for their species unto their dying breath. However, when death finally comes is that duty maintained? Does it continue as long as the mind can remember it? Regardless of the answer, a Headhunter must find a way to continue his duties. Even if he is no longer human.
Halo & High School DxD/ハイスクールD×D, M, English, Suspense, chapters: 17, words: 110k+, favs: 828, follows: 1k+, updated: 3/19 published: 6/29/2021, OC
2k+ On the Illusion of Might » by evevee We thought ourselves powerful, able to conquer a galaxy with nothing but toys. When we overcame every challenge, breached the space between the galaxies themselves, what use were the words of a race ashamed of their own past? Yet we cannot deny that we were warned, for while a challenge to a human is laughable, a challenge to humanity is a death sentence.
Halo & Mass Effect, M, English, Sci-Fi, chapters: 27, words: 297k+, favs: 3k+, follows: 4k+, updated: 2/21 published: 2/21/2017, Master Chief/John-117, Cortana, Garrus V., Shepard
70 United Earths Empire: The Beginning of a New Age » by Destarien What if three Universes once separate come together. three different humanities with three different paths of technology merge into one galaxy. Citadel space will never be the same because the Schahl Empire and UNSC are here. Two Civilizations, one at war and one ready for war.
Halo & Mass Effect, T, English, Fantasy & Sci-Fi, chapters: 8, words: 21k+, favs: 206, follows: 271, updated: 1/5 published: 5/29/2022, J. Keyes, J. Cutter, SPARTAN-B312/Noble Six, Jerome-092
866 Sins Of A Galactic Empire Reborn » by zzzxxc1 When the Milky Way is revealed to the universe at large by a derelict CIS warship, the UEG are forced to become members of the transgalactic community, but its existence is soon threatened by the decline of the Republic, and the rise of an Empire. Adopted from SpaceCowboy2013.
Star Wars & Halo, T, English, Sci-Fi, chapters: 16, words: 116k+, favs: 1k+, follows: 2k+, updated: 12/25/2022 published: 7/28/2018, Anakin Skywalker, Obi-Wan K., Master Chief/John-117, Cortana
191 A few Titans Solves Many Issues, Including the Reapers » by vmoneywashere In a distant yet expansive corner of the galaxy, many races rose and fell without anyone noticing. Yet a collection survived their ordeals and now look outwards. They bring Ideals, Peace, Prosperity, all under the UNSA and its Custodianship. When the Quarian Migrant fleet encounters an Expedition fleet, the nomads find a new home and a new family. (more updates in the winters) HFY
Mass Effect & Stellaris, T, English, Sci-Fi & Family, chapters: 18, words: 74k+, favs: 647, follows: 906, updated: 11/10/2022 published: 11/16/2021, [Tali'Zorah, Shepard] Rael'Zorah, OC
533 Mass Effect: Galaxy at war » by palik A Citadel Exploration fleet filled with people the council didnt want around discovers something that will change the face of Citadel Space forever. The council will experience a crash course in the fight for survival (abandoned)
Halo & Mass Effect, M, English, Sci-Fi, chapters: 29, words: 84k+, favs: 1k+, follows: 1k+, updated: 10/5/2022 published: 6/18/2020
4k+ To Infinity » by creamofwheat2311 After discovering an ancient artifact, the UNSC's most advanced warship and a Sangheili Assault Carrier are transported to a universe unlike anything they have ever seen, and forced into a war against a foe they never could have imagined.
Halo & Mass Effect, T, English, Sci-Fi & Adventure, chapters: 53, words: 473k+, favs: 5k+, follows: 6k+, updated: 3/30/2021 published: 10/9/2013, Master Chief/John-117, Arbiter, T. Lasky, Shepard
207 Flight of the Twin Eagles » by Blazblade UNSC and GDI. Two different military forces, both made to defend Humanity from forces that would destroy it. Through an anomaly in space, these two would meet in order stop a threat against one humanity as a legend is found by the Initiative. New and old threats soon appear around the two groups as a new alliance is formed. The two eagles take flight into new skies.
Command & Conquer & Halo, T, English, Adventure & Sci-Fi, chapters: 15, words: 211k+, favs: 249, follows: 293, updated: 2/23/2021 published: 1/10/2018, GDI Commander, OC, Master Chief/John-117, T. Lasky
581Humanity's Rebirth » by TallYapflip 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, M, English, Sci-Fi, chapters: 22, words: 109k+, favs: 2k+, follows: 2k+, updated: 1/28/2020 published: 3/4/2016, [Samantha T., Shepard] Admiral Hackett, OC