Dan, a young high school musician, is angry at a recent turn of events that has made him resent everybody around him. However, he is contacted by Celestia and offered to be transported to Equestria to blow off some steam and relax. But Dan can't help but wonder if there's a real reason behind her offer.

Rainbow Dash, the Ponyville weather team captain, is known throughout the town as the stubborn tom-colt who has rejected every stallion who has come calling. But what happens when the human-turned-stallion comes to town and steals her heart?

Alright, this sounds utterly stupid, I know, but... I've made a deal with Discord. WAIT! DON'T LEAVE YET! I... I didn't want to... much. Alright, I was just too scared to tell him "no". He wants to play a game... help?

...

The rules?

Oh, from now on, every time I fall asleep in the human world, I get transported to Equestria, into a new body. I can stay as long as I don't give up, even until I die apparently! If I do, I get sent back to our world. Discord, being so bored in his statue, will influence my fate while I'm in Equestria. The game will only last ten rounds, at most.

...I'm doomed.

While on a diplomatic trip to the Zebrican Isles, Cadance, Twilight, and Spike stumble across a hilariously embarrassing secret of Luna's.

Luna doesn't think it's nearly as funny as they do.

Queen Chrysalis is a very busy monarch.

Not only is she going to expand her Hive's possibilities by signing a Cultural Exchange Treaty with Equestria, but she's also working on a duplicating spell that will allow her to create a perfect assistant for herself - which is, by the way, strictly forbidden and frowned upon by the Equestrians and in several other, supposedly civilized nations. So it's for the best that they wouldn't find out, right?

And just when you thought that Twilight Sparkle is the only magic user capable of casting a spell which 'accidentally' turns your world upside down... Chrysalis is there to prove that she is no worse.

Warning: please refrain yourself from reading the comments before the story, because spoilers!

The royal court of Canterlot welcomes its newest member with open forelegs: the human philosopher Voltaire, from Earth.

On Earth, Voltaire is known as the greatest enemy of tyranny in the history of literature, and a legend in his own mind.

On Equestria, the court betting pool is giving him a week before the Princess banishes him to the Moon.

Note: This story doesn't have sequels per se, but there are a couple of short follow-ups set in the present day ("Parade Coverage" and "Secret Histories"), and a prequel of sorts in "At the Inn of the Prancing Pony".

TV Tropes page.

Curious about Five Score? Come check out the story that inspired dozens of side fics and been enjoyed by bronies for years!

Original Synopsis Even though MLP:FiM ended a few years ago, my friends and I still loved the show. Stories, merch, fan art, I loved it all. Things started to get a weird though when I found myself with a cutie mark appearing on my leg. Humans aren't supposed to get cutie marks, so where the heck did this come from? And what's going on with my hair?

More Detailed Synopsis: Five Score is an action/adventure story of the human-to-pony transformation genre. It’s unique from most transformation stories because the transformation itself is not really the point of the story. It’s the inciting incident that raises countless challenges that must be resolved. They are on earth, as a pony, and need to fix this before things get worse. Think about yourself in their hooves for a moment. How are you supposed to change back or even figure out what caused it in the first place? How are you supposed to get food or do anything on Earth without being spotted by humans? If you are spotted or captured, how would you escape? How does one even open a door with hooves!? Did anyone else on Earth get changed as well? How could you get the word out to the other ponies who are themselves hiding? Is it worth risking travel across the country to reach the others? Which of your friends would you trust to help you deal with this? And why did you turn into this particular pony? Surely it wasn’t random chance, right?

These challenges are the tip of the iceberg in this full length adventure novel There’s a lot of humor, many tense scenes, and hell maybe even a war.

But don’t just take it from me, Look what random people on the internet are saying about Five Score, Divided by Four

One of the best things to come out of this fandom.
-IrraticDrop

This made me change how I think about fictional worlds, imagination, and creativity
-relgukxilef

The only story on FimFiction to have me literally shaking with excitement.
-jeramiahsental

SWEET FILLY LUNA I AM FLIPPING MY SHIT RIGHT NOW
-Shadow Reaper

Five Score master editor:
Scrub

Five Score proofreaders:
Comrade Sparkle
Rustle my Jimmies

WHY HULK HERE? WHY PUNY PONIES ANNOY HULK? ALL HULK WANTS IS TO BE LEFT ALONE!

After an massive space battle, Banner finds himself in a colorful land. A land where he doesn't need to be angry. Will he finally find a world where he has no need for rage? Or is the Hulk's wrath absolute?

Hulk will be Hulk, but Banner will be a lot more relaxed and in control of his rage. For a while.
I OWN NOTHING!

After an argument with Luna, Celestia realizes that she is the only creature in Equestria who cannot sleep in. She enlists Twilight to help, and the two of them come up with a spell that will allow her to spend the night on a different world. Unfortunately, all their research failed to reveal that the world they sought was populated. Now, the Princess must decide whether to continue with contact, or destroy the only non-Equestrian witness to their existence.

Cover art is called "Sleeping Celestia" by Briskby

The princess of the night leads you to her royal bedchambers at the top of her high tower. Therein she shows you the night sky in its entirety and presents the heavens’ great mystery in her beautiful night.

Come, share an intimate moment with the Night Princess.

Edited by The Abyss

Lyra teleports a human to Equestria to learn more about their culture. Some SF concepts in the first two chapters, but probably going to delve into slice-of-life and some platonic romance.

My first foray into fiction after a ton of essay writing. C&C welcome!

Please also check out Nethelli's Far From Home, which has a similar premise and came first.

Story image courtesy Steeve.