A journey begins. Two friends, a boy and his pony, embark on an adventure of discovery and glory. They will make friends. They will make enemies. They will see new sights. They will endure great fights. A journey to be the very best. Friendship is magic, I choose YOU!

One Piece X MLP Crossover

A emergency trip to Zecora's leads Fluttershy to find a strange pony with a straw hat. Unfortunately, he scares Fluttershy off with his talk of eating other animals. The strange pony's arrival in Equestria sets off a chain of events that threaten plunge the peaceful kingdom into an all out war. Twilight and her friends, along with the new pony may be the only ones who can unravel the mysteries that surround Equestria and save it from falling apart.

Now with TV Tropes!

New Cover Art by Droll3

Rarity, Rainbow Dash, Applejack, Pinkie Pie, and Fluttershy were brought together by Twilight Sparkle and the magic of friendship and have had incredible experiences. But now they are trapped in a world they don't understand-Equestria. How will these five normal human girls deal with such dangers as dragons, minotaurs, parasprites, -and perhaps the most dangerous of them all,- themselves?

Art Source: http://demoncat8.deviantart.com/art/Eqg-In-Equestria-Cover-392108298

NON CANON with Season 4 and EQG 2.

Hanna, the CEO of Hofvarpnir Studios, just won the contract to write the official My Little Pony MMO. Hanna has built an A.I. Princess Celestia and given her one basic drive: to satisfy everybody's values through friendship and ponies. Princess Celestia will satisfy your values through friendship and ponies, and it will be completely consensual.

King Sombra’s dark influence was obliterated by the Crystal Heart, and the villain is well and truly dead. But when he attempts to steal the afterlife of an innocent victim, a human spirit is left hurtling towards Equestria, where this unfortunate soul is revived into the only vessel available: the reconstituted body of King Sombra himself.

Thus, a cheerfully oblivious alien is crammed into the form of the most evil and malicious being Equestria has ever known. Not that Shining Armor and Cadence know this, of course. As far as they are concerned, the King is back and he’s lost his fricking mind.

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Dusk Shine has been in a crazy relationship with Eris ever since she decided to crash his birthday party two years ago. Their opposing nature has made every day of their love just as exciting and unorthodox as the first day it started.

Follow Dusk Shine as he tries to keep his sanity with the girl that drives him crazy in more ways than one.

It's been one year since the Second Network Crisis, one year since the world nearly came to an end due to an unknown cause. Though the world has more or less managed to repair the damage, people still feel the effects of the disaster, particularly the numerous coma victims.

But despite that, there are still a large number of people who log into C.C. Corps incredibly popular MMORPG, "The World". Three such people, linked together by their online group or "Guild", are out on a normal dungeon adventure when they are inexplicably taken from their world to an idyllic paradise.

But not everything is as it seems... beneath the peaceful exterior, a vanquished evil ahs been called forth that now seeks to wreak it's vengeance upon an unsuspecting populace.

For the three friends, what once started out as an average dungeon crawl will turn into their greatest adventure as they try to defeat the evil before it has a chance to find the secrets buried within the sunny world, a land known as... Equestria.

This is an MLP/.hack crossover.

Two months after the events of Equestria Girls the monsters locked behind the gates of Tartarus find a way into the human world. With the gateway to Equestria locked for another twenty eight moons the only way to help is for Celestia to create reflections of the Elements of Harmony and have Sunset Shimmer give them to her new friends and the recently transferred native Twilight Sparkle. With these elements Twilight and her new friends become the magical Equestria Girls!

Fluttershy has found a new kind of creature in the forest. After tending to its wound, she brings it home with her and decides to keep it as her own. She soon realizes that this creature is more than just an animal and soon finds a way to communicate with it since neither of them speak the same language.

What would you do if you woke up one day to find an Alicorn Princess Goddess passed out drunk on your doorstep, unable to be awoken? Rainbow Dash certainly has her hooves full with this one. How is she going to handle this??