Isolated from her friends and taken prisoner in the middle of a war, Twilight must deal with the very real dangers of being percieved as an enemy as well as the nightmares of her arrival on 'Earth'. Can she overcome her own fears and the fears of her captors? Will the wayward unicorn's assistance be a boon or a curse to the 'humans?' Most importantly, will she ever find her way home?

"In short, it's a story of friendship and plasma rifles, with the emphasis on the friendship. The characters are well written, the XCOM setting is fleshed out very well, and the story is compelling. If you love XCOM, you'll love the story, but even if you've never heard of it, it's more than worth giving the first 3 chapters a read.

There's excellent action later on, but the real strength lies in the collision between the friendly and naive world of Twilight Sparkle and the desperate world of humans fighting a losing war for survival and willing to do anything to turn the tide."

--Arzoo

(XCOM/FiM crossover)
(Cover art commissioned by a friend and created by the magnificent FoxInShadow!)
(Original cover art by the amazing Carnelian can be viewed here!)
(Gore tag for blood and some violence)
(Many thanks to the studius OminousTen, Arzoo, xXFluttershyForeverXx and finally Setokaiva for giving my rambles a once-over)
(Now with it's own TV Tropes page! Get to tropin' folks!)

MLP/Undertale crossover.
Not a PWNY-verse story.

Long ago, the Monsters and Humans fought a great war. The Monsters lost, and were sealed in the Underground. It would take the power of seven human souls to break the barrier that kept them imprisoned. They only had six. And so the Monsters waited and hoped, praying that another human would find their way to the Underground. Some thought the seventh soul would give their King the strength to break the barrier. Some dreamed of a human who would be their friend, and save them all...or had nightmares of one who would bring back the war.

...but nobody came.

...but somepony did.

Eons after the war, with no way to tell how much time had passed above, a tiny blue filly with wings and horn fell into the underground, calling for her Mama. None knew the poor creature's nature or origins...but her soul was powerful with magic, even more so than a human soul.

None can know what will come...of this little 'Woona'.

Cover art by Sanyo21

Pandinus Imperator (You can call him Pan, he won't mind) is knocked back in time during the Canterlot Invasion, and accidentally kills King Sombra on arrival. Instead of being executed, the changeling is surprised to find himself being hailed as a hero, and is promptly put on the throne as the new monarch, the Crystal Emperor. However, Pan now faces a great many problems, among them Celestia and Luna, who seem certain that the changeling is secretly up to no good, as well as several political factions secretly plotting to undermine his reign. There's also the tiny problem of the constant snowstorm that threatens to cut the city off from the outside world permanently.
The Crystal Ponies need a hero now more than ever before. Why did they get a changeling instead?

We Has A TvTropes.

While not truly a part of Bucking Nonsense's Changeling-Verse, the same rules regarding changeling abilities and society apply.

Cover image provided by gabapple, used with permission.

A young girl, having been robbed of her childhood and very life by illness finds herself given a second chance in a strange world and with an even stranger body. With a new life, family, and even a brother, she tries to cope with the bizarre world she's found herself in while also trying to embrace her role and become worthy of the gift she has been given.
Being a princess can be hard however, even if it's only an honorary title, especially when you're the twin sister of Prince Blueblood.

Warning, very slow burn.

This story is a sequel to See the Zone and Survive

Fourteen Months Celestia has been in the Chernobyl Exclusion Zone.

S.T.A.L.K.E.R.s say that the Zone changes who you are... that's partially true. The truth is as horrific as it is simple: the weak die, the strong grow stronger.

Celestia wasn't weak to begin with. She became stronger, and she has changed. Can she still fit in her homeworld?

This story is a predecessor to Operation Homecoming

We are S.T.A.L.K.E.R.s: Scavengers Trespassers Adventurers Loners Killers Explorers Robbers. The Chernobyl Exclusion Zone, the most dangerous place on Earth, is our home. Radiation, killer mutants and deadly anomalies are just another day at the office -just another day in the Zone, as we say. We get by, day after day, by scavenging gear, trespassing and exploring in forbidden areas, seeking for new adventures, all on our own; we kill for money, loot or survival and sometimes rob each other. Well, not everyone does the robbing part, that would be the Bandits' job.

I named myself Strider. I am a free stalker and I do not even know what I am doing here, not that I care anyway.
My name is Vano. I'm a free stalker and one of Strider's rare friends. It's a peculiar predicament, trust me.
My name is Celestia. I'm a free stalker and just want to get back home. Well, I wanted. Maybe I still do.

This is our story.

First time writing a story ever. Constructive criticism and comments are appreciated and encouraged, just don't kill me in the process. Romance is a sub-plot thrown in there for exercise and because it's popular, apparently. I made the cover art. I was bored and felt like drawing something.