Humanity's space exploration ultimately took the form of billions of identical probes, capable of building anything (including astronauts themselves) upon arrival at their destinations. One lands in Equestria. Things go downhill from there.
The only thing that can beat an AI is another AI. Unfortunately for Celestia, she isn't the only one the humans made and the others don't want ponies. Of course, if Celestia has her way that won't be the case for very long.
After storming into Princess Celestia's personal study unannounced, Twilight Sparkle soon learns her yearly battles against the forces of evil are a little more scripted than she'd thought.
Celestia lands on Earth as a common Arabian mare. Without magic, speech, not knowing the language, she seeks her way home. First though, she needs to make some friends and restore her freedom.
Illidan the Betrayer returns in the stolen body of Twilight Sparkle as the Mists of Pandaria fall, an ally of the Mogu and their returned Thunder King. Scattered across Azeroth, her friends search for their kidnapped friend, finding allies and foes.
The enemy of my enemy is still my enemy. But while the Dazzlings are about as 'enemy' as it is possible to get, the girls may just need their help when something even worse begins to prey on the students of Canterlot High.
Chasing a mystery into the past, Twilight finds an Equestria that is different from what she remembers. Will she be able to set history back on track by fixing what didn't happen, or is this Equestria destined to take a different path?
Trixie has been low on bits ever since the incident with Twilight where she went a little crazy. In her carriage she thinks over what she can do to turn around her fortunes, where she finds a small creature outside her carriage freezing.
Ponyville, Equestria. Fallow Meadows, Indiana. Two towns torn from thier worlds and deposited together on a third. Can Human and Pony work together? They'd better hope so, because they're not alone...
Imprisoned in Tartarus, Tirek receives a valuable lesson in the importance of friendship from a most unexpected visitor. Friendship lessons are always a good thing… aren't they?
Many eons in the future, a star wakes up from her eternal slumber. Her consciousness slowly recovering from her lethargy, she remembers her immeasurably long life.
Twilight manages to turn herself into a draconequus - now the only one who can help her learn to control her new chaos magic and change back is Discord. What could possibly go wrong?
With Sombra threatening pony and changeling alike, Chrysalis and Celestia begrudgingly agree to an alliance. Neither is happy at first. Yet, as they work together, they discover lasting peace, and perhaps more, is possible.
Cadance didn't know what to expect when her formerly banished Aunt Luna returned from her thousand year imprisonment in the moon. But, she's quite entertained by the hilarity.
When Celestia vanishes, everypony but Twilight Sparkle is turned into a vampire. She fights to survive in the ruin of Canterlot, until she's forced to leave. In the country town of Ponyville, a surprise awaits that will shatter her worldview forever.
Amira, former diplomat from Saddle Arabia, has turned fugitive, running from oppression of her unique form of magic. Her only hope is Princess Twilight Sparkle.
Lyra thinks Discord is an idiot for not thinking to dodge when the Elements of Harmony were about to strike him. Discord thinks this is the perfect opportunity for a game.
Ponies are starting to take root in human society, bent on proving their worth to humanity. But will that secure their future as the Mion threat grows worse every day?
In a new age of Magic and Science, the four nations of Equestria are threatened once again by chaos and war. It will fall to a young Unicornian heiress named Twilight Sparkle to discover her hidden powers, and find a way to preserve the peace.
Can former villains learn from one another without driving each other and everyone else insane? Discord seems to think so. Sunset Shimmer, however, has her doubts. And the Sirens aren't helping matters, either.
Chrysalis has won the battle: Canterlot - and soon, all of Equestria - is hers. But staining her perfect day crimson is one casualty: one death she cannot - will not - allow. No matter the cost.
[Dota 2 Crossover] When the Undying rises from the grave once again, he quickly discovers that he is no longer where he was. It is not a field of war, but a lush land of radiant souls. He dreamt a song of death... and woke to finally compose it.
Adrift in a sea of fearful adoration born from residual terror, how can Cadance possibly hope to get honest criticism out of anypony? By making it mandatory.