An ODST ends up on an un-mapped sector of the universe. He discovers a world that is inhabited by humans while he was tracking down a damaged Covenant Corvette which was carrying a valuable object that belonged to the UNSC.

Equestria has been at war for three years against the Griffin Kingdom. When the alien ship crashes the Equestrians discovered that they are not alone. When the ODST encounters the natives he learns that no matter where he goes war is still the same.

ALL MLP characters Humanized. Equestria and the rest of the world have achieved certain inventions. Cars, Planes, Phones and stuff like that.
Sorry for the terrible description.
HALO belongs to bungie
MLP:FIM belong to hasbro
coverart image is by johnjoseco

Twilight is about to have her hooves full. Who is this newcomer on the edge of town? AND WHY DOES STUFF KEEP BLOWING UP OVER THERE!? What is with the strange shifting star patterns high above? Join Twilight and friends as they discover that a whole new universe of alien life lies out among the stars. They make new friends and acquire new power. But there will be suffering also, for some things the universe holds are not for the faint of heart.

Because war..... war never changes..... no matter where you are.

If you like Halo AND MLP:FIM you may wanna keep reading

Events in this story take place after the events of Halo 4 Spartan Ops, but before Twilight becomes an Alicorn.

(please note, im juggling a few things, so this story may take me a while. But i figured, what the hay? how else can i spend those free hours in my week?)

Disclaimer: I do not own MLP:FIM or Halo and this story is not an official continuation for either franchise. The real owners are Hasbro, Bungie, Microsoft Studios, and 343 Industries. Give them due credit for the characters, locations, and starships they created.

(Status Update 12/29/2014): Sequel status in doubt. Although considering renaming the sequel based on the name of a song from the band Muse and the song itself (source of some inspiration) I'll let you guys guess in the comments page below the sequel what song inspired me to give the sequel more time and basically, you know, give it a chance. :)

Rarity was never one for adventure, or any thing remotely what she considered dirty. But when a spell goes awry, she'll need to change those views if she's to survive the brutal alien hegemony known as the covenant and return home.
Sex for dialogue

Paladin Knight Vaughn of the Brotherhood of Steel from the Capital Wasteland was sent on a lone mission to investigate the strange occurrences around Fort Constantine, but when he arrives, a portal opens up and fell to the land of Equestria. How will he get back home? Will he ever return? That remains to be seen....

(Warning: The MLP characters are humanized but with some traits, such as pesasi having wings and the unicorns, while not having a horn, use magic with their hands. Also is from Fallout 3 but with the Fallout 4 style, such as the power armors actually being mech suits and such, and a few other types of crossovers.) NOW CANCELED FOR REVISIONED

Even the tiniest change can alter the future in ways you can't imagine.

The battle with Lord Tirek did not end the way it was supposed to. The centaur was still sent back to Tartarus as he should have been and Equestria and all of its' ponies were saved, but thanks to one final act of defiance, Twilight vanished without a trace not long afterwards.

One month after her disappearance, Twilight has returned to Equestria, but not in a state anypony was expecting her to. Now they're all filled with questions about what has happened to her, but what tale does she have to share with them? What is she willing and unwilling to tell them?

Can a battered phoenix still rise from the ashes?

Marcus, an NCR Ranger just got Ranger Sequioa, a gun that represents 20 years of service to the NCR when it all goes wrong on his first mission with it. Mainly being nuked by the courier.
Now follow Marcus "Ranger" as he helps Equestria become a better place in his adventures at the Fillydelphia War Zone.
Note: this is 3 years after the initial epilogue.
Origonal story by KKat and can be found here
Would like some cover art. Appreciated but not necessary
Looking for a pre-reader to help cover any mistakes i make
another note: This story will be updated irregularly due to it being a way for me to try and cure writer's block

On the night he tests a new invention involving time magic, Midnight is somehow transported well over a thousand years into the past! Figuring out his circumstance, and realizing his invention is his one way home, Midnight must journey through the very history of Equestria, and along the way he witnesses various events minor and significant, causing others, and having adventures and overcoming obstacle after obstacle in his desperate quest to return to his own time and find his way back to those he loves!

It's been a year now since Twilight vanished after attempting a sonic rainboom. She's spent her time fighting in WWII alongside her brothers in arms. Now, after a bad jump, she finds herself back in Equestria. After a well deserved rest, a nice, warm bath, and the most unusual breakfast, she begins to tell her story.

Vinyl Scratch and Lyra Heartstrings are vampires, creatures of the night whose civilization has lived in humanity's shadow for thousands of years. They are self-sufficient and prideful, only venturing out of their hidden cities to replenish their stock of blood. But ties to past lives are not so easily severed.

When Lyra catches wind of supernatural happenings in her hometown of Canterlot, she and Vinyl take it upon themselves to investigate the cause.

Lyra teleports a human to Equestria to learn more about their culture. Some SF concepts in the first two chapters, but probably going to delve into slice-of-life and some platonic romance.

My first foray into fiction after a ton of essay writing. C&C welcome!

Please also check out Nethelli's Far From Home, which has a similar premise and came first.

Story image courtesy Steeve.