Stanford Pines is a strange old man living on the edge of town, isolated from most of the world, with strangely few memories of his past and a deep, abiding fear of the nearby woods. Then one day his niece and nephew are sent to live with him, and despite his warnings they stray into the woods, where they find a mysterious castle and their lives are all changed forever...

After getting confronted by a strange woman raving about a creature in the woods, Dipper has a heart-to-heart with Grunkle Stan. Day Seven of my Seven Days of Halloween Challenge

A year before the twins come to Gravity Falls, they tried a ritual that would summon a demon. Not just any demon but the Radio Demon: Alastor. Taking a liking to them, he offers to teach the twins about the demon arts inside Hell itself. Now a year later, the new Pine Twins enter Gravity Falls, but will the town be ready for them? No, but it will be entertaining either way. Rated M

A father who has just lost his family finds a son who has just lost his too. This actually has the potential to work surprisingly well for both parties.

Stan Pines' daughter wonders about her mysterious past and spends time with the one person who doesn't care about any of that. Read A/N Day Six of my Seven Days of Halloween Challenge

Now as the days of Christmas are upon them the remaining Mystery Shack Investigators along with their allies must find and save their friends all in the clutches of evil. Can they save their friends before the winter wonderland becomes a cold day in Hell?

Lilo learns that Halloween is very important in Gravity Falls and gets asked an equally important question. Read the A/N please. Day five of Seven Days of Halloween

They just arrived in Gravity Falls and what's the first thing his sister wanted to do? Catch the ghost that's supposedly haunting their new house. Goro knows he should refuse...but he can't help it. For Futago Siblings Week 2021 Day 6

The Battle for Mewni is over as Star and Marco sit divided by dimensions. However, another batch of strange visitors from the dimension without magic soon meet the princess, and warn of a mysterious threat called Bill Cipher. Shadows are growing long on Mewni and secrets are emerging, could something worse than a dream demon be at work? Season 3 with Gravity Falls characters.

Lilo's 18 and studying interplanetary relationships in lieu of formal education. Her gap year just happens to take her to the site of failed invasion, in Gravity Falls, Oregon. Where she learns a lot more than she bargained for and finds a place where everyone's a little weird.

Dipper vs Manliness AU! Poor Dipper, all he wanted to do was put some hair on his chest...he never realized his journey from boy to Man would involve a high stakes game between two eldritch Gods. Seriously Mable, would it have killed you to be nice to your brother who just wanted to win you pancakes? He's about to be ripped apart by wild beasts for crying out loud!

A spell gone wrong sends Human!Bill Cipher To Camp Half-Blood where Will Solace and Nico di Angelo try to figure out where he's from. Meanwhile, Dipper and the rest of the Pines go looking for Bill, what other secrets will they uncover?

Post- The Inconveniencing AU! What if Wendy and her friends were the one's to prank Josh's Sister? What if he invited them back to Blackwood Mountain over the Summer? What if the Pines twins tagged along? Will their be love in the air...or murder?

A crossover between my Star vs Amazonian island story and my Gravity Falls Amazonian island story. Two tribes meet for an ancient ceremony. And Marco and Dipper find themselves caught up in the middle. Very Lewd. Smutty. Review.

Luz claimed to have no friends in the human realm, but she did have two: Mabel and Dipper Pines! Now they're back from their summer fun, and she's gonna show them magic! Unbeknownst to her, they already know. (rated T for swearing) This is a new AU I made where the twins and Luz are childhood friends. Original as far as I know, please don't burst my bubble! :D

The Summer Solstice is coming up soon and the Summer Grand Galloping Gala is approaching soon! Twilight's making the preparations, her friends and the former princesses have arrived, and Discord is narrating this story. Meanwhile, Gravity Falls is celebrating the anniversary of the Stanley Pines' victory with the 15 year old Pines Twins. But two orbs will unleash a new evil soon...

Dipper and Mabel find out that they have special abilities and are now going to a magic boarding school in the UK

After being erased from existence in Gravity Falls, Bill Cipher is reborn in another dimension with no memories, starting his new life without having a name. Decades later, Bill meets an abused Harry and greeted him, making his monotonous eternal life a drastic turn. How the Wizarding World will face the return of the mythic One-eyed Beast with the Boy-Who-Lived?

Norman, Neil, Coraline, Wybie, Raz and Lili arrive at Grunkle Stan's Summer Camp with vastly different intentions. When they meet two twins that are experts on the secrets of Gravity Falls, they find themselves reluctantly teaming up. But how much can they actually trust each other? There are secrets in this town, but more surprising are the secrets being kept from each other.

Gone was the kind hunter who had taught Dipper how to survive, who had taken the boy in like a son. The eyes which gazed back at the young hunter now shone only with guilt-ridden determination.

Close to a decade after the Transcendence, the Mystery Twins decide to visit a strange forest in hopes of meeting someone with an oddly familiar story. Perhaps this is the beginning of several beautiful friendships. (Or maybe they'll just all annoy each other to death. That could happen, too.)

Soos just wanted to relax and play this cool new game he found, but when a certain video game from his past returns once more, things quickly get out of hand. Who will win this digital confrontation? Place your bets! Ding ding ding!

AU. Dipper and Mabel Pines were never normal kids since their mother Erza is a wizard from another universe. But when they move to Gravity Falls they discover there are stranger things than magic from another universe. Will they be able to figure out the secret to the town using only their wits… Well their wits and maybe a little magic...Please R&R.

The Pines Twins, Dipper and Mabel, fall into a not so friendly, but weird underground. Will they ever make it out alive? Gravity Falls does not belong to me, it belongs to Alex Hirsch. Undertale does not belong to me, it belongs to Toby Fox. TS!Underswap does not belong to me, it belongs to Team Switched.

Danny got used to the strange stuff. Mind you, he sees dead people daily, not mentioning that he is half of one. But when your friend is a floating dorito, all bets are off.