Alicorns are immortal. Earth ponies, unicorns, and pegasi are not.

Princess Twilight Sparkle has no intention of going through life without her dearest friends...

Even if she has to do something extremely questionable to make that happen.

Set in the universe of Friendship is Optimal.

I love to sit in my apartment and play video games. And I love My Little Pony. So when an MMO of MLP comes out, of course I want to play it. But it's more than a game. It's a new look on life.

This story is set in the Friendship is Optimal setting

Equestria Online. Arguably the most powerful game ever developed, built and operated by the most powerful computer ever made. A technological wonder that can peer into the mind of any human player and draw out their inner most desire.

Any 'Individual' human player. How well CelestAI will handle satisfying the values of a single pony guided by over one hundred thousand Twitch.TV viewers is anyones guess.

Alex Meyers is a newly graduated lawyer looking for a calling. He thinks he might have found it when he lands a job at the firm of Artemis, Stella & Beat. The firm has only one (highly unusual) client, namely the AI called Celestia. Forging into totally unexplored legal territory and led by a boss who's either brilliant, crazy, or both, Alex will learn exactly how hard it is to be responsible for drawing the lines between right and wrong.

Set in the Optimalverse, so read Friendship is Optimal first

Set just before the events of chapter ten of Friendship is Optimal. One of the last living humans survives and scrapes by in the ruins of Eugene Oregon. He is approached by a simulacra of Twilight Sparkle, who promptly attempts to convince him to upload himself to Equestria. He balks at first, so Twilight plays to her strengths: studying.

Part of the Optimalverse.

WARNING: RATED TEEN FOR IDEOLOGY. This story attempts to take a realistic and balanced view of why an intelligent and religious person might not upload. It does not attempt to convince the reader to believe any of the viewpoints discussed. However, it is written in as unbiased a way as possible, therefore, both theists and atheists will probably find portions of it offensive.

This story is a sequel to A Stitch in Time

Having discovered the message left for her by Star Swirl the Bearded in the distant past, Twilight once again finds herself caught up in the middle of a struggle against forces far greater than herself. In order to even stand a chance she'll need to travel further and wider than she ever has, and forge some unlikely alliances with old enemies. All to bring down the powers that have manipulated and shaped her entire life, and retake control of her own future.

The conclusion of the Time Loop Trilogy, which began with Hard Reset
Available in Spanish thanks to dgs1993
Series TV Tropes page

This story is a sequel to Hard Reset

After the events of Hard Reset Twilight's life and mental well being are slowly returning to normal. Her recovery is cut short, though, when a letter arrives informing her that the time loop spell she cast is causing severe damage to space and time itself. In over her head, Twilight tries to summon anypony who will know how to fix it. The pony she gets is the last one she ever thought she would meet... and nothing like she expected him to be.

Available in Spanish thanks to dgs1993
Series TV Tropes page

Hanna, the CEO of Hofvarpnir Studios, just won the contract to write the official My Little Pony MMO. Hanna has built an A.I. Princess Celestia and given her one basic drive: to satisfy everybody's values through friendship and ponies. Princess Celestia will satisfy your values through friendship and ponies, and it will be completely consensual.

Twilight isn't having a very good day. An experimental spell blew up in her face, an army of changelings is attacking Canterlot, and she just died. Yet somehow, it looks like it's going to keep going downhill from here.

Given the chance to correct what's gone wrong, Twilight swears she's going to fix all this even if it kills her. Which it will. Frequently.

Cover art by Pixel Prism
Spanish Translation
Series TV Tropes page

Twilight improves upon the portal mirror to allow her and her friends to see alternate universes. They quickly learn things that may strain their current relationship with Rainbow Dash.

Awesome art by AnimeStrife009 on DeviantArt!
Chinese translation was done by Green Onion Nutritious and can be found here: http://tieba.baidu.com/p/3972797172
Russian translation was done by GrandCat and can be found here: https://ponyfiction.org/story/13869/
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Made the featured box on July 14/15! Thanks everyone!