After an accident, Rarity and Twilight are thrown in a race against time to stop their transformation into changelings before they become part of Chrysalis' swarm forever.

After the changelings' failed invasion of Canterlot, Twilight tries to soothe some of Ponyville's rampant paranoia by casting a spell to prove there are no imposters hiding in the town. But her spell leaves her in an alien body, facing a mob of angry ponies who just don't believe her when she says she is Twilight Sparkle.

Or, at least, she was Twilight Sparkle, anyway...

Featured on Equestria Daily, 2/17/13
Cover art is by the awesome and amazing Conicer

Twilight one night found a crying pink blob, and she could swear it was a changeling...but changelings aren't pink blobs...so she takes the creature in.

Featured: 11/30/2015! (For like ten minutes XD)

For years, Twilight Sparkle and Queen Chrysalis have been at each other's throats. Both have experienced victory over the other, and both have experienced defeat. Out of all the creatures in Equestria, none despise each other the way the pony Princess and changeling Queen do. They seemed destined to remain locked in battle forever, or at least until one is finally dead at the hooves of the other. The cruel insults, the vicious loathing, and the powerful spells that have passed back and forth between them at each meeting have become the stuff of legend.

Imagine Twilight's surprise when she finds out changelings consider this dating.

And now they're married.

***

Sequel: Pony Courtship Rituals

***

Some beautiful fanart of the end of chapter three was done by Dmann892; you can see it here.

More awesome fanart, this time from chapter one.

Now with a TvTropes page (obligatory TvTropes warning goes here).

If you want a Russian translation, you can find it here.

There is now a reading of the story on Youtube, which starts here.

[I only know so much about the OC Twivine.This is the one who created her. Rating will either change to M or the next installment will be an M story. Tags added as I need them.]

Emerald Morrison didn't have the best life, but certainly not the worst. She didn't have the best grades, but also not the worst. But now? Now she finds herself as Twivine, an OC made by another brony. Problem is, she has no idea who Twivine is. She heard of Twivine, seen one or two fan made pictures but that's about it.

Somehow Twilight's magic surge brought Emerald or rather Twivine to Equestria and now she grows up (again), only this time in the Sparkle household.

08/29/2015 Featured? Thanks. Sure hope this isn't because of a short raise in the amount of views.

I used to be a human, but then I pissed off a wizard. Now I'm stuck in "Ponyville", in a land called "Equestria", and with no apparent way back home. I'm also pretty sure that I've just replaced somepony. I'd rather not have to answer any tricky questions, so I'm better off trying to be this unicorn whose name has been forced onto me.

My name is Twilight Sparkle, and I'm not a pony.

[Rated Teen for extensive use of vulgar language and sexual references.]

[Cover art made by richhap on deviant art. Unamused Twilight, go figure.]

[Brybrythesciguy is working on a cool audiobook of this story right HERE. The characters' voices are even simulated with an AI! I definitely recommend giving it a listen!]

In a remote corner of the Solana Galaxy lies a backwater planet called Veldin. Nothing important ever happens there. Nothing exciting, either. Ratchet, a Lombax with no idea of his origins, is beginning to grow bored with his life, and dreams of excitement. He wishes on a falling star for some excitement to find its way into his life.

The falling star answers by crashing into his home in the form of a basket carrying a tiny creature with a horn, a pair of wings, and four hooves. The name on the basket reads "Twilight Sparkle".
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Part of the PWNY-verse.

Edit: Now with cover art by the amazing G_Haze
Video Consultant/Technician: m2pt5 (he provides the infobot videos and similar.)

Edit: Game Timeline
Ratchet and Clank: Done
Going Commando: Done
Up Your Arsenal: Done
Deadlocked: Done.
Size Matters: Done.
Tools of Destruction: Done.
Quest for Booty: Done.
Crack in Time: Done.
All 4 One: Done.
Into the Nexus: Done.