This story is a sequel to Monster Hunter World: Monsters and Magic

Cadance and Shining search for their missing daughter, Flurry Heart, and Flash Sentry joins them to make sure the royal couple are safe. The trail leads them to Ponyville, where they find a crack in reality that ends up sucking the trio into it's magic and drops them into a brand new world. This world is filled with monsters, the Hunters who seek to maintain balance, and an ancient evil from the world that the trio came from, where they have to get used to their new bodies and how things are gone in this world. Here they must fight monsters, forge powerful weapons and armor, and uncover ancient secrets.

(MLP/Monster Hunter Crossover. Focuses on World: Iceborne, and then Wild)
(Part of the Demon War story series)
(Reading the prequel isn't required, but recommended)

Pinkie Pie went looking for her missing friends and adventure in the Everfree Forest, where she found her way to the Castle of the Two Sisters, uncovered the soul of Daybreaker that had been sealed away, and ended up being sent to a brand new world with Celestia's other half. Together they ended up in Karakura Town, the home of Ichigo Kurosaki and his friends, and the pair end up going on an adventure to save a friend from her fate... and the consequences of their actions.

(MLP/Bleach Crossover)
(Part of the Demon War story series. Reading the others is not required)

Princess Celestia, searching for Twilight Sparkle and the rest of the missing ponies, approaches the Tree of Harmony to see if she can find any clue as to where all of them went, only to be ambushed by the remnants of Nightmare Moon, seeking revenge after her defeat. In an odd twist of fate the two are pulled into a brand new world, full of heroes and villains with all sorts of powers, Quirks, though both figures end up separated from each other in the land of Japan. Celestia ends up in the care of Inko Midoriya with Izuku as her brother, while Nightmare ends up being found by All For One.

Both must deal with their own Quriks and the school that teaches students on how to become heroes, all while facing those that seek to bring them down.

(MLP/My Hero Academia)
(Part of the Demon War series)
(Will not be covering the Final War Arc.)

Capper and Rarity, in the middle of searching for a way to settle the former's debt to Verko, travel to the old Castle of the Two Sisters and are joined by a Solar Guard and Lunar Guard, where they find a mysterious artifact that teleports them to a strange and unusual world, to a land that is in the middle of a civil war. In this new land they discover plenty of opportunities to start a new life, ranging from being a student of magic to being an adventurer of ancient ruins, or dealing with bandits to being a grand thief, and everything in between. With that freedom in mind the group will tackle whatever this strange world has to offer, even dealing with the various gods if need be, as they finally take control of their fates at long last.

(MLP/Skyrim Crossover)
(Standalone story, not tied to a series)
(Will contain a few spoilers for the end of ESO: Gold Road)

Sombra was defeated, his body shattered, but his soul persisted and found a path to a new world, at the same time as Fluttershy and Radiant Hope, causing them to arrive in a brand new world. They must join Sora, Donald, and Goofy in their quest to find their missing friends, and their fight to save the worlds from the Heartless, while unaware of the true evil that's lurking in the darkness.

(Kingdom Hearts/MLP Crossover)
(Part of the Demon War series, but reading the others isn't required)
(Warning: gender bent Sombra)