An object of unknown origins crash lands in the no-pony's land between Equestria and Gryphon territory. Princess Luna and Twilight Sparkle race to beat the Gryphons to the crash site, but discover more to the crash than they originally thought.

Sam wakes up in Equestria stark naked and with no clue how he got there. More problematically, he seems to be in somepony's home.

Teen for nudity and the awkward situations arising from said nudity.

A rewrite of Make Friends, or Die! by Sam Polson (which has since been taken down). I liked the premise, but Sam's English was spotty and Google Translate didn't help him much. Starts going in its own direction fairly quickly.

Applejack finds a strange visitor in her apple orchard one day, with even stranger stories to tell...
MLP/L4D2 crossover. My first story on FiMfiction.net! May add more tags as story progresses.
Credit for the image goes to brokencreation on DeviantArt.

The star system Omega Centauri was just another oddity on a map to scientists in the not too distant future. However when they found the star was orbiting an earth-sized, earth-like planet instead of a black hole as its motion had suggested, a mission was scrambled to investigate this most unusual of celestial behaviors.

Hamstrung by politics, and nearly crippled before it began, the 'Lone Ranger' mission was reduced to just one crew member and left to his own devices.

These are the logs of Arrow 18 and its lone commander. This information is classified TOP SECRET by the Global Space Agency.

Do NOT tell the princess.

Cancelled, but preserved for posterity.

Archer is not having a good day. He's recently been knocked unconscious and imprisoned by a Fae race, notorious for their animosity towards humans and each other. Instead of cannibalistic Merfolk or mischievous Fairies, he finds... talking ponies. Who want him to be their "friend."

He is sentenced to remain in a small town they call "Eqshana", until he can learn to "live in harmony" with its inhabitants. Unfortunately, a message from his king, Jove V, has turned his prison sentence into a mission of espionage. Now he must escape these no-doubt insidious creatures, and even more importantly, stay sane doing it. Along the way, he will answer one of the most important questions he has ever faced: Is there really nothing to eat around here besides hay?

An archeologist finds himself pulled into a parallel world by Discord's storm of Chaos, and encounters the mysterious creatures that live there. How will a rational human, confronted by creatures out of mythology, and unable to find his way home, adapt to his environment? Only one way to find out.

Sometimes, when you leave home for a while you come back to things feeling different.
A week and you may find lots of mail.
A month and your neighbors have started using your driveway for trash can storage
A year and people wonder when your house was abandoned
Ten years and your neighbors are probably gone
A century and your house is probably demolished, and a happy cybernetic family has moved in atop its remains.
Two centuries and people would ask why you are using "classic English"
A millennium and you may find you no longer recognize what those things in the sky are, and why the floor keeps glowing for no reason
A million years and you may find your species had to abandon its home-world
A couple million years, and you would find yourself in the situation I ended up in.

Conjuration is a lost art in Equestria. Celestia is bored, and decides to learn some summoning spells. She summons an otherworldy creature, but will it be anything like what she expects? A non adventurous HiE. Mostly just learning about interactions. I'm just gonna roll with it, and add tags an ratings as the story unfolds.

This is pretty much a self-insert, mostly done for comedic purposes.
After a mishap with an invention of mine, a friend and I find ourselves in the magical land of Equestria. How will the peaceful land of Equestria handle the influx of two humans? Will Jay and I ever find a way back home? Will anyone give this story a fair shot? Read and find out.
Things that actually involve MLP:FiM begin in the second chapter.

The Princesses find an alien creature barely clinging to life at the scene of a terrifying crash. Can the Combined Power of the Elements of Harmony save it, or more importantly, should they save it? Will the arrival of this strange creature tear Equestria apart?

TV Tropes
https://tvtropes.org/pmwiki/pmwiki.php/FanFic/Article2