In an Equestria where Princess Luna was never possessed by the Nightmare the world thrived under both Celestia and Luna's rule. As such, the timeline diverted. After rigorous evaluations, Sunset Shimmer was chosen by Princess Celestia to be her student. Twilight Sparkle, having been glossed over by the Sun Princess, was selected by Princess Luna to be her pupil. One day, the Immortal Sisters send their protégés on a mission to a small town. When the villain named Starlight Glimmer appears all of their lives will be changed forever.

From the depths of the cosmos descended a single stone, which started everything. When Twilight picked it up to study it, she didn't expect it to thrust her and her friends into different worlds. Being split up in the vast multiverse whose existence they've only discovered now, was already hard enough to handle. But they are now forced to fight against all odds and new enemies for the hope of getting back home.

Thankfully, some of them may receive the help of familiar faces.

Harry Potter and Twilight Sparkle have been best friends and penpals for a long time. She was his first friend, and they became the closest of companions after Twilight found a way to summon Harry to Ponyville.
When Twilight perfects her spell to bring her long time penpal, Harry Potter, to Equestria, she plans a relaxing weekend vacation away from Hogwarts before the Yule Ball. However, fate has other plans as the two are thrust into an adventure of friendship and magic. Now Twilight is more involved with her friend's (and the wizarding world's) affairs than ever, and the bonds of their friendship will be tested.

Peter Parker juggles the responsibility of young adulthood as well as the responsibility of protecting Manehattan as the Spectacular Spider-Mane. But he soon becomes an essential hero of Equestria as well as reuniting and gaining feelings for a certain princess.

Additional Tags:

Spike
Starlight Glimmer
Cadance
Shining Armor
Twilight Velvet
Night Light
May Parker
Discord
Celestia
Luna
Young Six
Cozy Glow
Tirek
Chrysalis
Grogar
Doc Ock
Green Goblin
Hobgoblin
Electro
Kraven
Mysterio
Vulture

The Multiverse.

Infinite worlds. Infinite possibilities.

An ancient being by the name of The Exiled has been traversing the Multiverse in search of something. Something that will give him unlimited power over all. He has been recruiting villains from all over to do his bidding. Once he locates what he seeks there will be none to stop him.

But when Twilight Sparkle joins forces with 4 other heroes from various dimensions, his plans are put at risk. It would seem that this Unicorn is more of a problem than he thought.

Join Twilight as her and her new team of friends traverse through various worlds to beat the bad guys, and to put a stop to The Exiled and his nefarious schemes.

Read the various adventures Twilight has Through The Multiverse.

Twilight begins to develop new powers after her brother's wedding, well the truth is that not everything we saw in the royal wedding was the only thing that happened that day...

At her brother's wedding, after Chrysalis sent her to the cave, Twilight loses consciousness and has a vision, a dream in which she meets a nine-tailed beast, when she wakes up the only thing she remembers from that dream is a name "Kurama"...not only that, she found out the truth about her, she is not a normal unicorn, she is most than that

English is not my maternal language, this is my first story, I hope you enjoy this

Everything began with a dream. Soon, Rainbow Dash, Twilight, and their friends end up in a strange new world where card games decide everything. With the help of their new friends, Yugi Muto, Yusaku Fujiki, and their friends, some more reluctant than others, the Mane 7 now have to go on many perilous journeys to help keep this new world and their world safe.

It should have been the happiest day of her life. Despite all odds, Twilight passed the entrance exam to Princess Celestia’s School for Gifted Unicorns. Not only that, but she also got asked to be the Princess’s personal protege. And if that wasn’t already amazing enough, she even got her cutie mark! So why wasn’t the filly prancing around in circles shouting “Yes, Yes, Yes” over and over again?

Being the victim of an uncontrolled surge did not only grant her enough magic to give life to a dragon but apparently also made it possible for her to get glimpses of her future, showing her a destiny she really does not care for. So, knowing where her current path would lead her, there is really no sensible alternative than throwing everything away and changing her destiny to one she can agree to, setting her up for a life of intrigue and adventure, uncovering the many mysteries surrounding her and a certain pegasus, to find out who they really are.

Unfortunately, in doing so, she ruins the carefully laid out plans a certain Princess of the Sun had drawn up. But knowing the forgiving nature of Celestia, there is no way that could lead to conflict, right?

Huge thanks to the amazing Mutter_Butter for the cover image and to the amazing LastToTheParty, for becoming my proofreader/editor.

Frieza, during his conquest of another world, finds a young girl who seems to know nothing about herself or the universe they live in, save for her name. After some thought he decides to adopt her and raise her as part of his family, both to stick it to his brother and to have a far more loyal soldier for the future. While doing that he must be wary of the surviving Saiyans that are part of his forces, all while searching for a way to secure his legacy and make him the master of the entire universe.

Twilight Sparkle will have to deal with her father's enemies, potential traitors, and anything else the universe decides to throw at them as she tries to learn more about herself and where she came from.

(Dragon Ball Z and Super/MLP Crossover)
(Part of the Demon War series, but reading the others isn't required).