When Rainbow Dash finds herself lost in a new and unfamiliar village, she reaches out to a certain lavender-hued stranger for help. But to Twilight Sparkle, Rainbow Dash is no stranger; at least until she notice her strange new voice, a lack of wings, and a fondness of the word ‘darling’. Intrigued by the uncanny looks to one of her best friends, she decides to lend the newcomer a helping hoof, but things go from weird to weirder when Pinkie Pie happily announces that she too has met her lookalike. Twilight Sparkle and her friends take it upon themselves to find out the truth behind this mystery: who are these doppelgangers? Could there really be another Ponyville out there? And what does it all have to do with Discord’s lost legacy?

Cover art by AireDaleDogz (http://airedaledogz.deviantart.com/)

A machine made for war awakes in a new world. Stuck in surroundings which puzzle it; can it, or will it be able to become something more than what it is?

Crossover with Keith Laumers Bolo-verse
Other tags include : Slice of Life, Possible Romance believe it or not! And a bit of humor.
Please beware of any spoilers in comments as well

This story is a sequel to Princess Celestia: The Changeling Queen

This story is a direct sequel to Princess Celestia: The Changeling Queen. Reading that first is necessary to understand any part of this story.

Co-authored by vren55 and Zervziel

Alternia, sister to Chrysalis, ruled Equestria for a thousand years, disguised as Princess Celestia, while the alicorn slumbered in a healing sleep. Now revealed, Alternia prepares to become Equestria’s first changeling princess, and prove herself to the ponies she loves at the side of her co-rulers Luna and the newly-returned Celestia.

But even as the crown descends onto Alternia’s head, something is stirring in the depths of the Eastern Sea, something that will turn the surface world onto its head. Some power that could destroy Alternia, and all that she loves, before she can even regain the approval of her own ponies.

Will Alternia restore the trust her ponies once placed with her? Will she found a hive? Will she find love?

All that is certain is that Equestria, and the world, will never be the same again.

Now with a TV Tropes page.

Empress Tethys and the Kelpies Created by Zervziel

That Fantastic Cover art is by Plainoasis

Pre-read and edited by:
Blankscape,
FinalFan,
Courage Fire
Cosmic Cowboy

James Kaughn is a member of the world's most elite fighting force, but when his team is sent in to rescue a captive family in Afghanistan the mission hits a snag. He stays behind to allow the others to escape, fully expecting to die, but ends up in an unfamiliar place. Join him as he meets new challenges and struggles with his worsening PTSD. Will he be able to actually make friends and not just teammates?

This story is a sequel to Project Ascension

After going through so much, it's nice to have some quiet times. But quiet does not mean uneventful. Even in times of peace, ponies change, ponies grow, and ponies learn...

Sequel to Project Ascension (Sequel of Longing)

Collab done with Darth Link 22 (Post Nuptials, Families, About Last Night, Wedding Bell Blues, Honeymoon and Metamorphosis)
Editor: Amras Felagund

When the other Elements of Harmony realise that Fluttershy gave each of them a different reason for not attending a slumber party, they set out to discover the truth.

They end up discovering something else instead.

AUTHOR'S NOTES: This story was inspired by a blog post that Obselescence wrote — although I should point out that it has absolutely nothing to do with the idea he suggested (hence the lack of a 'Romance' tag).

Rated T for innuendo.

Twilight is known for many things: being the shrunken student of Princess Celestia, an adventurer, powerful magic user, avid learner and reader, and more. But one thing she's never been is a prankster. When she learns about the holiday known as "April Foals Day" she decides to take part in the holiday and prank her closest friends and family for a few good laughs.
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This story is a gift to my friend CommanderX5, the writer of Celestia's Tiny Student. Note that this is in canon with his story and takes place after Twilight's duel with Celestia, but before she meets the Wonderbolts.