Twilight and her five friends are transported during a botched spell, across dimensions to... Ponyville, Equestria? But not the same one that they knew. Sitting on a bench is Harpsy and Babar. The Doctoress avoids apples from an aspiring Applebuck. And in a library across town, six stallions join their forces as they try to decipher the appearance of filly look-alikes of themselves around Ponyville!

This will be a series of romantic drabbles based around one concept: take a pairing, apply rule 63 to one of the ponies involved, and see what happens. Characters updated as story goes along.

By the way, Rule 63 of the internet is as follows: For every given male character, there exists a female version of that character and vice versa.

What would you do, if you met a pony who was at once your brother, and yet not? Applebuck wishes to reunite with his 'Cousin JayJay', and braves the dimensional divide to reach his goal. But being a small foal, how will he deal with a world in which everything is flipped? His friends, his family, and even... himself?

Luna has had enough of Celestia's games, and has found the perfect means of revenge. Using a long-forbidden spell, she transforms her sister into little more than a small filly, all so she could pull the greatest prank ever. Unfortunately, she soon learns that before you fool around with dangerous magic, you really need to read the fine print...

A sequel can be found here.

After a brief spat with Spike over a seemingly trivial matter Twilight decides that in order to learn more about dragons she should try to become one. With a simple spell she transforms her little pony self into a larger dragon and quickly realizes that she has no way to change back available to her....

A TF2 crossover? Seriously, how many of these have shown up? Oh well, time for my effort.

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Equestria and Aquileon, the griffon's realm, have a long-standing agreement: Every five years, teams from each country will face each other in a competition to garner fame and glory for their home and for themselves. This year, the griffons have chosen war games, confident that they can steamroll the peace-loving Equestrians.
Princess Luna, determined to stop this from happening, pulls nine great warriors from their world to help Equestria and to train their representatives. But was this a good idea?

This is kinda... experimental. If this garners enough interest, then I shall continue it. Otherwise, I shall let it die quietly.
Also, if somepony can give me the source of the picture I'm using, I'd appreciate that immensely.

Twilight Sparkle, Celestia and Luna are transported into a strange alternate Equestria, the Land of Always Summer, where the day lasts forever and a terrible queen rules with an iron hoof.

Feel free to check out or add to the story's TV Tropes page.

A love triangle is made as Carrot Top and Little Strongheart compete for Braeburn's affection, and life will never be the same again! Derpy gets a taste of cowpony life as she integrates herself into a new town and Dinky will never be taken seriously with her mother around to treat her like a foal. Join our favorite background ponies in some frontier life, adventure, and even romance?