A massive, unstoppable beast rose up from the depths of Equestria. It destroyed our homes; it began to spread plagues and famine throughout our country side. It ruined foreign relations, it even killed our forerunners.
In the final years of her imprisonment, Nightmare Moon was still plotting, but she wasn't returning alone. Behold, the Heir of the Moon! MLP/HP crossover
Rainbow Dash has a secret, hidden for generations; a secret she never dared tell anyone. She can communicate with the dead. Now, things have changed, the secret's come out, so she help her best friend say goodbye. (Inspired by Through Violet Eyes)
Old enemies stir in Northern Westeros and a team is sent to deal with this ancient enemy, but they may be surprised by what else they find on their journey.
A crossover with The Hunger Games. While the original book/movie focus on the 74th Games, this takes us all the way back to where it started, where the first blood was spilled to entertain the masses. The story of the 1st Equestria Games.
After a spell miscasts, the Mane 6, the Crusaders, the Princesses, and Derpy Hooves suddenly get stuck in the world of Warrior Cats. This story takes place after "The Last Hope."
The Mane 6 investigate a strange corruption taking over the Everfree forest, only to be accidentally sent to a phantasmagorical world where there is an island for each hour a the day, and must find each other if theyevery have any hope of going home.
When a plague hits the city of Flankfurt, Twilight Sparkle decides to help stop the disaster. However, the longer she fights the disease, the more she thinks something else is wrong.
Tanith First and Only Cross-Over. Equestria joined the Imperium of Man, and due to Imperial Law homeland of ponies need to provide Imperial Guard Regiment of their own. Colonel-Commissar Ibram Gaunt is sent to ensure everything is going well.
Tonight's the night. Dexter in the cute and happy world of MLP. Love that pic but i couldn't find the who made it. I don't take credit for this pic, think of it as free advertising
Linking two alternate universes that would never have met otherwise? Discord goes for some less conventional chaos. A crossover of sorts with the Hell's Gate series by David Weber