Deep in the Royal Library is a book. A terrible book that is said to send whoever reads it mad. A book so dangerous that it has to be hidden away and secured with chains to prevent it from ever being opened.

A book which has just been accidently checked out by Spike on behalf of Twilight Sparkle.

The Star In Yellow is rising once more, and only Rainbow Dash and Spike can save Twilight before it's too late. Ideas live forever. Ponies do not.

This fic is loosely inspired by the 19th century story 'The King In Yellow'.

"Suppose I killed them all?"

Twilight Sparkle is called away to tend to Luna when she falls ill. As Luna grows sicker and Twilight more determined to help the younger princess, she begins to uncover dark secrets about the elements, the alicorns, and her own past.

Nightmare Moon has won, and the world has been shrouded in eternal night. But hope still lives. The land of Equestria is currently divided between the armies of the usurper and those of the Dawn Militia. However, the greatest danger to the rebellion may not be the dreaded Mare of the Moon, but her lieutenant, Eclipse–formerly known as Twilight Sparkle.

Pinkie Pie has a strange tale to tell Twilight upon discovering a very strange coin among Pinkie's possessions.

Filly Pinkie Pie wonders why Princess Celestia is sad all the time, even on her birthday. Granny Pie tells her it's because long ago the princess had to destroy her sister Luna in order to save the world and no amount of time has lessened her sorrow. Little Pinkie Pie decides she is going to make Celestia happy with the best birthday present ever! Now all she has to do is build a time machine and go back and change the past...

Posted on EQD way back in 8/7/11 EQD For your Birthday, Princess.

"It's called 'Shh'," said Fluttershy. "It's a game about who can be quiet the longest. Sound fun? I'm the world champion."

Fluttershy is not a pony who makes things up. She really is the world champion of "Shh," or The Quiet Game. And now it's time for her to defend her crown, with Twilight Sparkle and Rarity along for the ride.

Distance can drive us apart. It can also bring us closer together.

After all is said and done, and the ponies have gone their separate ways, the only way they have to keep in touch is through letters.

Original Equestria Daily post is here
Russian translation
Chinese translation
Polish translation
Spanish translation

Now with music and audiobook

Twilight becomes alicorn of the stars. This is sort of a problem, because Luna kind of already was alicorn of the stars. Oops!

TV Tropes

How far does a sister's love extend? How far would one go, to bring the other back?

Cover image is Bitter Sea of Regrets, by Karnella.

For almost a thousand years, the immortal Nightmare Moon has reigned over Equestria as Empress. To the average pony, Nightmare Moon is an overarching enigma whose rule is absolute and whose wrath is terrible. But to Twilight Sparkle, who as an orphan has never known her parents, the Empress is something else entirely. When the young unicorn is brought under the royal wing as an apprentice, she learns a great deal more about the supposed tyrant than she ever knew. But as Twilight is introduced to life with her new mentor, she is thrust into a world of political intrigue, conspiracies and secrets. Secrets that were never meant to be revealed. As allies and enemies plot against the very peace of the nation, will Twilight fall prey to the perils of her new position? Or will she prosper and find in Nightmare Moon the mother she never had?

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My eternal gratitude to my editor, LordOfTheWrongs, without whom Night's Favoured Child would not be the story it is today.

Now with added TVtropes!