It is recommended you read this story in one of the Dark formats in order to better distinguish the colored text of the 'other voices'.

Hey folks! Name's Deadpool!
I thought that was all of us?
It is. He's just introducing us as a single entity.
Will you two idiots be quiet? I'm trying to talk to the readers! Anyway, I know you've all been waiting with bated breath for this story ever since it was announced, and here it is! And it's going to have everything you'd expect of such a story!
Explosions!
Adorable father-daughter bonding moments.
Total babes!
Awkward hilarity.
Not to mention me, Deadpool, the merc with-
Daddy, who are you talking to?
Oh hey Chryssi! Just telling the readers about-
Are you breaking the fourth wall again? I thought you were going to teach me how to do that today.
That's what I'm doing! Say hi to the readers, Chryssi!
You will all love me and despair as I feed upon your adoration to become an unstoppable god!
That's my girl! Hey, wanna read the story with me?
I brought popcorn and chimichangas.
*sniffle* You're the best thing to ever happen to me, Chryssi!

Hey look! We've got cover art now!
Aww, you were so cute at that age!
And I'm not cute now?
Now you're sexy!
We should thank Sanyo21 for the image.
Then I guess I'll throw up a link! Nnnghha! http://www.fimfiction.net/user/sanyo21
...did you really have to literally throw it?
Yup!
Oh, and for those who don't know yet, this story is part of the PWNY-verse. It's not all about us - even if it should be - but you'll probably enjoy it to-Oh, stop making me a shill already!

Oh, by the way, it's recommended you read this story in Dark or Ultra Dark. Some of the colored text doesn't show up clearly otherwise. Not necessary, but just a suggestion.

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.

This story is a sequel to Luna's Protégé

Growing up is an adventure. Especially when it takes place under the tutelage of Princess Luna! Under her care, Twilight, Trixie, and Sunset are now friends. However, they're not quite PBFFs, yet. And since they've barely begun being Luna's Protégées, there's still a great deal left for them to learn.

Naturally, since they're still fillies, there will be some missteps, mistakes, and even the odd problem or two along the way. But, it's nothing they can't handle, as long as they have each other!

Direct sequel to Luna's Protégé
Set in the Trio-verse.

This story is a sequel to Fortresshy: The Nine Fathers

Fluttershy has returned to Equestria after being temporally displaced to another world, where she was raised by a loving but insane family. She didn't return alone, though. Her new family came back with her, now working for Princess Luna, their new Fortress being built near to Ponyville. All involved would need time to adjust.

Unfortunately, time waits for no one, pony or human. Still, the former RED Team - now Team RED MOON - is used to handling craziness. After all, they live under the same roof.

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Part of the PWNY-verse.

Edit: New fan art by G_Haze, who also did the cover art!

Pinkie doesn't tell ponies about Pinkamena and Surprise. The doctors said that they were bad for her, that they were a disease, but she disagrees. Sure, Pinkamena's a bit of a grumpy-pants, but she's still a great friend! She's often the voice of reason to counter-act some of the other two's crazier ideas, after all. Surprise, on the other hand, is a great prank-player, and always up for some fun. She's more like Pinkie, only more hyper. Both are great fun to be around, and they get on well.

Thing is, she knows that if she told ponies about them, then they would be dragged back to the hospital. And then be 'treated' again. None of them want that. Because of this, not even her best not-in-head friends know about them. The three of them have, for years now, been careful enough to keep the existence of Pinkamena and Surprise secret.

This has, of course, gone out the window now that Twilight is hammering on the door after overhearing one third of a conversation, with no sign of anyone else talking.

Hints of F/F shipping inside. Nothing will actually come of it here, though. Maybe in a future story.

Cover art can be found here: http://killryde.deviantart.com/art/Smile-338206490

This is a fic based on the Time Loop Files, the format of which was first codified by Innortal on fanfiction.net.
Here's a brief guide.
The basic idea is, one character (the Anchor, usually the main character of a fictional setting) is looping back to the very first moments of their parent series every time either they die or some kind of time limit expires. They of course end up monumentally stir crazy given enough time.
Eventually others start to loop as well.
The reset is not always perfect. Sometimes a loop's history will be different to the "prime" loop, or canonical plot.
"Crossover" or "Fusion" loops also occur, randomly. These can involve the home loopers having a guest, or the anchor for one universe spending time in another, or replacements of one character by another.
Vacation Loops are where the Anchor (or others) decide/s "buck it" and lets off steam by doing whatever comes to mind. There's little or no attempt to maintain the original timeline.

In addition, and particularly more recently, it should be known that this story has a collaborative element to it - people may submit loop ideas or loops, ideally at the Spacebattles thread (a link to the current version of which is on the Trope page), and they may become included.

There's two page image options, thanks to Filraen - the current page image has been edited by the original creator from this work of theirs.. The other one is here:
http://hourglass-vectors.deviantart.com/art/MLP-Loops-466030169