Dipper and Mabel go back to Gravity Falls in their teen years and they bring their significant other with them. Hopefully this time it'll be a peaceful summer for the twins. But, with these two sets of twins' troubles sure to follow.

"We make our own monsters, then fear them for what they show us about ourselves."- Mike Carey & Peter Gross' ...Well I don't know about that, but releasing calamities and monsters upon your world can't be much better...even if it was to save your family.Tyrone Pines becomes the most hated man on earth to keep his loved ones safe. So now he must send his beloved children away...

When sent to his Gruncle Ford's home for summer, Tyrone Pines never suspected he'd find adventure...or love. Trapped in another universe for thirty years...he and his family are ready to come home... Sadly, dark forces are on the move...and the past and present will seek to tear apart all they've worked so hard to build together... Twilight/Tyrone Dipper/Wendy Alchor/Pacifica

After a great tragedy that paves the streets with blood...Equestria finds herself adopting a human infant...worse, she discovers that the child has both a blessing and a curse. He'll be cursed to create a great evil that will shake Equestria and kill everyone he loves...but blessed to always find love...whether the ponies like it or not...wait, I think I got those mixed up

A crazed villain has kidnapped the mane 6 as filly's! Is it discord? Tirek? Crysalis? Worse, a pony-obsessed little girl! After years of being brainwashed can the pony's readjust to life in this strange new world and find their way home? ...who knows?

'post- The Inconveniencing' AU! Friendship is magic AU! What do you get when you body-swap two main characters, and load them up with booze, drugs, sex and lie to them about facing no consequences? ...a college frat party on steroids! "Ain't I a stinker?"

When Dipper and Mabel return to Gravity Falls for another summer, it seems their trip takes a turn. The next thing they know, they are far from home. Can the Pines twins return to Gravity Falls before time runs out? Rated T for safety.

A tale of magic and monsters with our protagonists being the well known crew of Phineas and Ferb and the Pines twins ; Mabel and Dipper all in the beautiful backdrop of Hogwarts . Has OC... no pairings.

Morty starts writing down his adventures with Rick in the guise of class assignments, which eventually becomes a hobby for him, while Rick finds himself being drawn ever closer to the schemes of a cult worshipping an old foe of his he thought long gone. This story is a prequel to my first story, The Excalibur Saga. Dipper and Mabel will make an appearance at some point.

Major AU. Who were Marceline's parents? why did the Mushroom war happen? How was the Enchiredion created? Where did the Cosmic owl come from? And how did a certain town in Oregon get involved in this? Finn and Jake are going to...find some of these answers...hopefully? Anyway, it's MYSTERY TIME! A story idea given by 'Dr-Indigo'.

One year after Weirdmageddon, the Pines reunite in Gravity Falls for another summer of adventure. A fall into Equestria wasn't what they had in mind though, or being turned into colorful ponies... SPOILERS for Gravity Falls' season 2 & series finale (Seriously, GF is best gone into blind!). Set during MLP:FIM Season 6 after "The Crystalling".

What if the Mystery Shack gang had suceeded completing the Zodiac? What if the side-effects were more unpleasent then predicted? What if they were later revived by the elements of harmony? How would the gang deal with this strange new world? And how will Equestria deal with them? Dipper X Harem, Mable X harem.

Inspired by LordBrony2040, the events of the Friendship game end with the word being destroyed. Sunset finds her friends dead and she is ripped away and thrown back to Equestria, where she finds herself both in the past BEFORE her exile and as an Alic- BLAH! BLAH! BLAH! Like we haven't heard this a hundred times before! Can we get to the Eldritch demons and creepy space apes?

The events of the wedding had more dire consequences then first thought...now Twilight is dead to her friends and the fates of several worlds now lie in the balance! What makes a true friend? Loving one another through the happy times? Or sticking together through the bad? ...I think were about to find out the hard way! A SCP Foundation X Multiple crossover story

What if ponies and humans lived together since the beginning of the earth? How would such cultures evolve and clash? Time for a history lesson ladies and gentlemen! From the stone age to modern times let's take a peek into this tantalizing 'what if' Grey! Flawed! Ponies. Grey! Flawed! Humans. Wendy X Tyrone, Dipper X Twilight

A collection of oneshots that are based on the amazing crossover story, Universe Falls, by MiniJen. (Cover also by MiniJen!)

Mabel and Dipper are crushed when their mother died over the school year after their summer in Gravity Falls. The two gain a sudden interest in Alchemy when they return to Gravity Falls that summer. In an attempt to bring their mother back to life, Mabel loses her left leg and has to sacrifice her right arm to bind her brother's soul to a suit of armor. (Rated T cuz I'm paranoid)

A Gravity Falls and Star vs the Forces of Evil crossover. Marco and Bill work in a coffee shop and they meet Dipper and Tom there. They all slowly become friends and help each other out with their fears and insecurities. But what happens when one of them starts to change in ways they never expected? Coffee shop AU. Canon Dipper, Marco and Tom.

MLP x GF x Crackdown x Multi crossover! Dipper once had friends...friends who were torn away from him by the treachery of another. Now he's left his problems and his world behind...too bad his problems wouldn't leave HIM behind. 3 evil gangs ruled by 3 evil men...will friendship stop them?...I doubt it... (eventual) Dipper x Harem

Though their adventures in Gravity Falls seem to be over, a new adventure awaits Dipper and Co. in the city of Anaheim where they must team up with the famous hockey loving Ducks in order to face a threat which may destroy the world.. (Post-Weirdmaggedon)

Danny Phantom finds himself injured and in the care of the Pines family. Because of irreparable damage to his throat, he is unable to talk, further harming his already fragile mental state. Ford and Stan do their best to take him under their wing, but he isn't quite ready to trust again.

Magolor is mad on rainy days and decides to stay in his bed to release some steam.

Bill starts rewriting Magolor's life by the minute...but what else will happen?

So what happens when Trixie and Pacifica become friends? Apparently this quick one shot to help with my writer's block. Sorry if anyone sounds out of character. So please read and review! And always think outside of the box!

Universes will be torn apart. Worlds will collide. People will be slain. Everything that you once knew will be turned upside down. Five (six? maybe seven?) worlds will meet, and who knows what will happen. Only canon ships really. Rated T just in case. Also, this is my first fanfiction! Please review and critique if needed. Thanks. I couldn't fit other crossovers, whoops.