This story is a sequel to Better Living Through Science and Ponies

THIS STORY IS CURRENTLY BEING REWRITTEN. PLEASE READ:
I've decided to rewrite this entire story. Considering that I began this project with almost no creative writing experience, I was bound to make some pretty bad mistakes. The story flow is not well organized, and there is an unhealthy amount of redundancy and poor pacing, as well as some pretty important things that I should have included. I intend to address these issues to the best of my ability, but it will be a long and arduous task. This story means a lot to me, so I want it to be more than the mere amateur mediocrity that it resembles. So, give it a read if you want, but keep in mind that it will change. I recommend that you put this on your read later list in the meantime.

This is a Portal 2 crossover. If you haven't played Portal 2, please do that first. Then read the prequel if you haven't done that either.

After Chell finally escaped the confines of Aperture Science, a freak portal mishap down below transported her, along with the entire Enrichment Center, to the land of Equestria. Upon entering this world, she was transformed into a pony. In a strange body and in a strange land, Chell was fortunate enough to be accepted by the ponies of Ponyville, and she lived out a new life contently among the ponies.

But that peace was not to last, for GLaDOS took a particular interest in the ponies of Equestria, and after two weeks of preparation, she launched a surprise attack and kidnapped 300 ponies to serve as test subjects, including Chell's friends and the princesses themselves. Once GLaDOS had them, she subjected them psychological torture. To save her friends, Chell made her way into the one place she hoped never to see again. In doing so, she freed the ponies, defeated GLaDOS in battle, and helped bring about the destruction of the facility. Although this made Chell a hero, she paid a terrible price in that brutal fight.

Beaten, battered, and traumatized, Chell spent months recovering from her wounds. After returning home from the hospital, all she wants is to once again live a normal life in Ponyville, but to do that, she must first heal from her wounds, both physical and psychological.

At the same time, GLaDOS herself has survived Aperture's destruction. With nothing left but herself, she vows to get back to testing. Though she faces an uphill climb, she is determined to see her facility rebuilt and the testing resume, and will stop at nothing to achieve this.

Has a TV Tropes page (will need to be updated after rewrite)

The works that this fanfiction is based on are properties of Hasbro and Valve. I would like to thank Pen Stroke for writing the original story and Flyer for his assistance and advice.

Please note, this is an unofficial sequel. I have received permission from Pen Stroke, but it is not canon to the original. I hope you enjoy it, but keep in mind that this is a fan work (of a fan work), and Pen Stroke holds the rights to the original story.

==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.

This story is a sequel to Where Loyalties Lie: Honor Guard

After risking her own life in a daring adventure across the world to save Princess Luna, Rainbow Dash wants nothing more than for her life to return to normal. In her mind, what happened is in the past, and she wants nothing more to do with it. But a past abandoned is doomed to be repeated, and with an ancient threat rising beneath the snows, Rainbow may be the only mare who can truly save Equestria.

A Price of Loyalty story.
No longer canon to the 'PoL' universe; see author's note on chapter 1.

After Pinkie Pie Suffers a severe head injury, in her forehead is discovered something that an Earth Pony should not have. This gives answers to where she gets her abilities, especially how she seems to be able to defy the laws of physics. This also explains some of her craziness.

How will her friends handle this, and can she learn to better harness the magic within?

A big shoutout to Aegis Shield for the original idea. I would not have thought of this one myself. You, good Sir, are brilliant!

Cover image by sapoltop on Deviantart. I lay no claim to the artwork. The artwork is his creation.

This story is a sequel to Discordant

Almost ten years have passed since Scootaloo helped free Discord. She’s learned to live with the consequences, but it’s never easy. After being fired from the local weather control team, she receives a letter from Princess Celestia, offering her a job as an assistant flight instructor for gifted pegasi. With no better options, she reluctantly accepts. But why her, what game is Celestia playing, and what exactly is going on in Canterlot?

A story in the same vein as My Little Dashie, but not a carbon copy.
Awoken in the middle of the night by a mythical creature sitting on his doorstep, a man's life is drastically re-arranged by the sudden entrance of Princess Celestia. Struggling to accept things he couldn't ever think possible, he'll have to make a decision about what's worth changing his entire life.
(Note: I added the "Alternate Universe" tag because I imagined this being a reversed-roles universe where Luna is the big sister and banishes Celestia, rather than the other way around.)

Boba Fett. Notoriously known as the greatest bounty hunter in the galaxy. From the Outer Rim to the Core Worlds, his exploits are the stuff of legend.

His latest hunt --for which the reward offers enough credits to purchase a small star system-- takes him to the farthest reaches of explored space, to a distant and unknown planet, where he is to kidnap a notable figure of great power and return to his employer with all due haste.

The target?

Princess Celestia of Equestria.

The 'Human' tag is not present on this story because it involves immersion into a universe that contains a great deal more species than them. Expect far more than mere humans to make an appearance.

Rainbow Dash is lonely. It isn't long after the death of her best friend, the energetic Pinkie Pie, and she decides to tamper with the laws of nature and take things into her own hooves. Her quest: to create her own Pinkie Pie, one that won't leave her behind. But her experiments don't quite go as planned, and she is left with an oddly coloured, robotic foal. But can she just cast it aside? Can she just pass it off as a failure? Can she ignore it when it looks at her with those eyes? Those scared, green eyes...

EDIT: An actual background woo! done by TTSnim Thank-You!!!
EDIT: Thanks to BaleonRosen for doing a better description for me.

This story is a sequel to Thrown Abroad

After the events of Thrown Abroad, Suncloak the changeling is happily living in Ponyville. Well, sort of. He needs the love of friendship to stay alive! Luckily, there's plenty of ponies who would want to be friends with him. But let's not forget about other changelings here...

You know, this would be a lot easier if the whole concept of friendship wasn't so needlessly difficult.

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Amazing cover art by Wolfeh! Find her Tumblr here!
Fanart!
To be found on Equestria Daily here!

"Equestria's Guard: the Bravest and the Best. Do you have what it takes?"

So the advertisements say. When Rainbow Dash saves the life of Princess Luna, however, she quickly comes to learn that there's a lot more to the guard than what everypony knows. As she faces down threats to her friends, her Princesses, and her country, Rainbow will have to decide exactly who she is loyal to.

A Price of Loyalty story.