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

Equestria is still picking up the pieces after the defeat of Tirek, and everypony is helping out with the paperwork, even Rainbow Dash. Things change when Princess Celestia arrives, bringing with her a letter with some very stunning accusations of the exploits of a resident in the town of Oasis. Now, the main six are tasked with finding out if the letter was truth or fiction. Did this Mister Baker really do what they claim? Only one way to find out.

However, Mister Baker is not who, or what they expected.

Rated Teen for occasional language. Additional tags added for more dark themes.

Proof read and edited by the amazing SunnyPack , Snakeskin Ducktape, and Tyrannosaurus Tux.

Battle Ready is the new pony in Ponyville. A peculiar stallion, he has agreed to become Ponyville's temporary librarian while Princess Twilight Sparkle and her assistant Spike are away. As Ponyville begins to grow accustomed to Battle's odd habits, Twilight's friends can't help but feel that he's hiding something. A stranger from a strange land, there is nothing to be suspicious about a unicorn from a foreign country travelling to Equestria is there? But what about the scars that can been seen across his body? What 'personal tools' has he kept secret in the city vault? And perhaps most importantly, what sort of stallion has a Cutie Mark of a skull on a black shield?

Fluttershy's last expedition to find and observe the breezies had been an amazing experience for her, all things considered, but if there was one thing about it she hadn't loved, it was having nopony there to share the experience with.

Now, presented with the similar opportunity, Fluttershy decides to invite Rainbow Dash and Rarity on her latest expedition to the Crystal Forest. The expedition, however, ends up being far more dangerous than any of them ever expected...

As well as having to avoid the ever-present threat of the wildlife living on the island, the three are forced to deal with seemingly inexplicable magical phenomena and the mental toll of being separated from one another. They discover forgotten history buried in time, new and exotic creatures, and, for Fluttershy and Rainbow Dash, emerging feelings for each other.

Note: takes place before the events of Season 4

This story is a sequel to From the Ashes

Equestria and the Avengers have formed close friendships. Friendships that may eventually help form the foundations of the relations between Earth and Equis.
There's only one man who stands in their way: Victor Von Doom. With his army, formed from the enemies of the Avengers and the Elements of Harmony, Doom intends to bring both worlds under his dominion. Separated across two worlds, the two teams must find a way to stop him, or risk losing everything.

(Takes place after Thor Ragnarok, and Father Knows Beast. Ignores Infinity War)

A search for a mysterious energy reading leads a Commander to Equestria and reawakens some of his memories from a place he once called home, but his presence there is not welcomed by some of the nations.
(Note: rating may change later. Also the sex tag is for certain situations)

Twilight Sparkle has been abandoned.

After an expedition into the badlands is torn to tatters by an unprecedented monster attack, Twilight finds herself stranded in a hostile environment with no safe way back home. With no supplies and no survival training, It all seems hopeless for the scholarly unicorn until she is discovered by a type of creature she has never seen before. A changeling named Thorax, a native of the badlands.

With Thorax's knowledge of the environment, he is Twilight's best chance of getting home safely. And by that same token, perhaps Twilight is the best chance the timid, pacifistic drone has of discovering something he has lived his entire life without.

Set well before the Season 2 Finale.

Cover art was drawn by me.

This is a spiritual successor to The Bug in The Herd, and The Bug in The Basement.

Edited by Mister Hypothetical.

Twilight has just opened her school for all creatures to attend, only for the EEA to shut it down. Starlight brought her out of her rut, and Twilight's ready to open the school again... only for her star students to be missing. With threats of war on the horizon, the missing students need to turn up fast.

Someone else, however, has other things in mind for the students. And the first step involves releasing a serious threat to Equestria. Something that only those with a select power can face.

A power that the students now have.

Cover by alts-art.

This story is a sequel to The Legend of Zelda: Friendship is Magic

It's been a long while since Ganondorf was defeated for the final time by Link, the Hero of Twilight. Now, something far more evil and sinister, or just as sinister as Ganondorf threatens the land of Equestria. A sinister Spirit named Majora has returned and only Link, Colin, and their friends can stop them. Twilight, and all her friends will be there for her, and the Elements of Harmony will help Link defeat Majora just as they had helped him defeat Ganondorf, and bring peace to both Hyrule and Equestria once more.

Stuck in a creative rut, Rarity welcomed the opportunity Twilight gave her to be Equestria's ambassador to a newly discovered kingdom in the sea to the south. Perhaps in a new land, with a new culture, style, and fashion she could finally have that creative spark reignited in her. And if nothing else how many ponies get to say they opened up relations with a completely new people?

Unfortunately for Rarity things don't go as well as she hoped.