I am eternal, and death is my steadfast companion. The passing of each generation of my little ponies weighs on me; every one of them is a fleeting, irreplaceable treasure, a snowflake dancing 'round a fire. I want to save all of them; I have the ability to save a few. I have saved none.

==Originally written spring 2011== Equestria Daily Post==
GLaDOS is free of Chell, free to continue testing, when she discovers a portal gun Wheatley tried to repair with duct tape. When the portal gun catastrophically fails, the enrichment center, GLaDOS, and Chell are literally dropped in the middle of Equestria. The mute test subject soon finds the world of ponies far more welcoming than the human world. But GLaDOS sees possibilities. Let the testing begin... for science.

Mood Wings - Observations on Pegasus Body Language.

When Twilight Sparkle finds this book, she discovers an entirely new field of research. The secrets of pegasus wings lie before her, and she insists on making her own observations on the matter.

How?

Field research, of course.

A changeling who has lived at the side of an Equestrian mare for most of his life finds himself in the middle of the changeling invasion of Canterlot. He has no idea who the invading queen or hive are, and just wants to stay where he is, and more importantly, who he is.

The spell that ends the invasion doesn't discriminate, though. With his old pony form irreversibly stripped away, and the whole kingdom out to hunt his kind, he tries to keep his family together, and struggles to find his place in the world.

Please comment! Even now, I'd love to hear what people think as they read through

EPUB download
PDF download

Czech version:
Flitter on Google Docs translated by Draim (published at bronies.cz)

Russian version:
Флиттер on ponyfiction.org translated by repitter.
Audio book on YouTube by Diogenus.

Spanish version:
Flitter on DeviantArt, translated by SPANIARD KIWI.

Ponyville faced an ordinary day, but then night came, and with it a massive gateway into another world. It closes before any action can be taken, but now the Mane Six and Canterlot nobility are tasked with finding out what they can about the gateway. Who created it? Where did it lead to?

And most importantly, did anything come through?

Takes place after Season 2
Now 20% cooler with a TVTropes page!

Pinkie Pie was coming over to Fluttershy's house to invite her to a party when she witnessed a shocking scene: Gilda trying to eat Fluttershy's tongue! She immediately knew she had to get her friends so they could stop that mean griffon before it was too late. After all, why else would Gilda have her beak in Fluttershy's mouth?

Spartans never die, they're just missing in action. This has never been more true for Jorge-052 as, after activating the slipspace drive that was supposed to kill him, he is instead flung into a strange world where war is but a distant memory. Will the aging soldier be able to adapt to this new peaceful planet? Or will his only salvation be found in finding a way back to his own chaotic universe?

(It's my first time, so be gentle)
Now featuring a TVTropes page by Sabo88

When your life is as dull a gray as the world that surrounds you, the mundanities can make it all seem meaningless. Sometimes all we need is a little color -- or six -- to reintroduce us to what truly makes life worth living.

*6-16-2017 Edit, added Rainbow Dash tag because it triggered knighty.*