Bruce Wayne, billionaire philanthropist and businessman by day, by night he is the caped crusader, the dark knight of Gotham, the Batman. So why is it Bruce has woken up in an unfamiliar place, surrounded by talking horses? Why has he regressed back to being a child? Why is he now a talking horse himself? Will you ever get any answers? Find out in the next exciting chapter, same bat site, same bat story.
(Story proofread by King Murdock)
Read the sequel here - Bruce Wayne, dark knight of Ponyville

Warning: Silliness inbound.

By order of the high lords of Terra themselves, a lone soldier from the Death Korps of Krieg has been sent to the planet Epona to wipe out its Xeno population. Starting with Equestria, the Korpsman has sworn not to leave the planet until he falls or completes his mission.

However, no Korpsman should fight without setting up a proper trench first, and so the Korpsman must dig...and dig...and dig.

Destroying Equestria is going to take a while.

Robert Parker is a 24 year old ex-web developer living in New York city. In the wake of the conversion movement, he has seemingly lost everything. Haunted by the same nightmare every night, he soon realizes that he must make a choice.

To those unfamiliar with the Conversion Bureau: it is a scenario created by an author named blaze in which Ponies either appear in the human world or have lived beside humans without incident for millennia. One day, in the face of all the damage humanity has done to its world, the ponies offer a solution: undergo conversion to become a pony and allow the world to be inundated with Equestria's influence: thus healing it and bring forth a golden age.

Many different authors have taken many different approaches to this idea, all of them are worth checking out.

http://www.ponychan.net/chan/fic/res/53616.html (The current thread)
http://www.equestriadaily.com/2011/04/conversion-bureau-compilation.html (The compilation post on EQDaily. *NOT UPDATED*)

Bioshock meets MLP in this psychological thriller, where Celestia's new faithful student, Siren Song, must discover the truth behind the city beneath the waves.

Beautiful, gifted, and faithful student of the Princess of the Sun, Siren Song has very nearly everything a pony could want. Sometimes though, in the twilight hours, Siren can see the sadness in her mentor's eyes. Once, ponies whisper, the Princess had another student named Twilight Sparkle, but she left Equestria, never to return. The pony who has a perfect life just needs one more thing—to convince Twilight Sparkle to come home so the Princess will smile again. But when Siren arrives in pursuit of Twilight, she soon finds herself trapped in a city of horrors, with only its monstrous denizens for help.

Now with a TV Tropes page!

Officially complete!

Trouble is brewing in Equestria, and Spider-Man is summoned to save the day! However, he takes the form of a pony upon his arrival and slowly starts to lose his powers. Now as Peter Pony Parker, he must become Equestria's new hero as the Amazing Spider-Mane, but with past failures haunting his mind, will somepony be able to give him the happiness he deserves and save him from a prophecy that ends with his death?

Across Equestria and through Earth, two hearts will join together, but one may die to ensure the survival of reality...

Cover image drawn by jmkplover and colored by Saljian

Official Theme Song done by XAVI- Playful Banter

It even has a Tvtropes page!

Spiders and Magic: Rise of Spider-Mane

When a male human is created in the Canterlot Underground Labs and tortured for experiment, what will he do in order to free himself from his captors and live the life of freedom he craves?
This is the first fanfic I have written ever, so any criticism or advice is much obliged. Leave both good and negative comments for anything you have to say about the story.

Cover Art by Mexican Brony 101, with it being a linoleum print on paper.

This story is a sequel to 64 vs. Equestria

Featured: 7/27/14
Now in the employ of Princess Celestia, Project 64 must come to terms with his new life and what it will bring, but how will he do that with the visions and memories of the past coming to haunt him at every corner? What new enemies will he face? With his new abilities he will embark on a new adventure, this time with friends and allies alongside him.

This is obviously a sequel to 64 vs Equestria, so any constructive criticism is incredibly encouraged.

A hot dog vendor from New York gets teleported to the market square of Ponyville. And the person behind it? Doesn't care at all.

(Why did I do this?)

This story is a sequel to Gravity of the Situation

The great Gravity Queen, Kat Shifter, the scourge of her Equestria now faces the greatest challenge of her immortal life: living as a pony!

With an eccentric earth pony from another world, a bubbly pegasus, and a neurotic unicorn by her side, Kat will search the universe over looking for a way back to normal. Adventures, monsters, and aliens all waiting along the way... this might take a while.

Cover art courtesy of Equiniox _
With assistance from Golden Script

Theme Song: What the Hell by Avril Lavigne
This story is made in tribute to the Doctor Whooves and Assitant radio show on YouTube. I own no rights to the series (or either Doctor Who or MLP: Fim) and is not intended for any infringement.

After a month of being missing after a magical mishap, Spike has returned to Ponyville. However, he's not the adorable baby dragon everyone remembers.

Now a well fleshed out drake, and garbed in armor the likes of which ponies have never seen, he walks with caution, grace, and absolute confidence. His eyes show wisdom beyond his years, but he has trouble remembering details about his friends. But he returned with a purpose.

He also didn't return alone.

One thing is certain though...he has a story to tell. That is this story.

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MLP/Metroid crossover.
Part of the PWNY-verse.

Edit: Now with cover art by DavieRocket.