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A Spartan in Westeros (A Song of Ice and Fire X Halo Crossover) by
Agailius reviews
When the Forward Unto Dawn lands in the North, it sets the stage for untold repercussions which will ripple throughout the whole of Westeros. With civil war threatening to tear the land apart, and an entirely more dire threat arising beyond the Wall, John and Cortana take it upon themselves to again protect the whole of mankind; from both it's own demons... and those beyond.
Crossover - Halo & A song of Ice and Fire - Rated: M - English - Sci-Fi/Fantasy - Chapters: 21 - Words: 128,153 - Reviews: 1565 - Favs: 3,421 - Follows: 4,028 - Updated: 10/1/2018 - Published: 6/3/2014 - Master Chief/John-117, Cortana, Jon S., Eddard S./Ned
Master Chief and the Order of the Phoenix by
LordCaldrin45 reviews
It's been four years since Master Chief escaped the explosion of Halo. The wreckage of the Forward Unto Dawn went through a black hole, teleporting Master Chief and Cortana to back to 1995 Earth and crash land in England, where Harry Potter is taking his fifth year. A new adventure is about to begin. Review!
Crossover - Harry Potter & Halo - Rated: T - English - Chapters: 10 - Words: 19,003 - Reviews: 242 - Favs: 296 - Follows: 385 - Updated: 5/7/2013 - Published: 7/16/2012 - Harry P., Master Chief/John-117
The Hope of Humanity: Lost in the Wastes by
Taco Dinero reviews
After the Battle of Installation 00, Master Chief & Cortana do get teleported back to Earth. However, the planet they come back to is not the same one they left. Halo 3/Fallout 3 Crossover
Crossover - Fallout & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 6 - Words: 15,081 - Reviews: 75 - Favs: 144 - Follows: 182 - Updated: 2/3/2010 - Published: 11/8/2009 - Master Chief/John-117