Ferb is in college and finds himself in a run down playground beating himself up for something that isn't his fault. Who steps in to save the day but Mabel? One Shot, rated T for a character death. Ferbel (there needs to be much more of that on here)

The Flynn-Fletchers and friends leave Danville for a trip to Gravity Falls. Unbeknownst to them, Doofenshmirtz is there too, with plans of his own. WILL UPDATE SOON AS OF 4/28/15!

A mysterious book appears in Phineas's backpack, a group of mysterious people fall on top of Dipper in the woods, A dream demon makes a mysterious appearance in Isabella's dreams. How are all these events connected? Rated T for Violence.

Phineas and Ferb are having a new year's eve party when twins, Mabel and Dipper Pines, crash the party. Literally. This is a Phineas and Ferb crossover with Gravity Falls

This is the short version. Meaning, Not the FULL STORY. This is showing a part of the story to get you all interested. The original full is STILL IN PROGRESS. Also meaning. Writer's Block. Enjoy what I have for you all!

Our favorite triangular kid is literally ripped out of Isabella's hands by our favorite triangular bow tie fitted demon. Ferb, Isabella, and Gretchen, accompanied by Dipper and Mabel, embark on a rather strange journey in order to retrieve him and a long lost Wendy. Will they ever see their friends again? Phinbella, Ferbetchen, DipperXWendy

Unete a la aventura con Guille, Dru, Al, Tania, Mister, Fack y Rookie cuando se reunen para ir a Danville, una ciudad recreada igual a la de la serie en Orlando hasta que su avión se estrella en una selva donde tendran que convivir juntos con los personajes de Phineas y Ferb, Gravity Falls y My Little Pony. Capitulo 5 Subido.

There's a technique in the mystery clan known as mystery fusion. Mabel knows this ability, and in the middle of a difficult battle, she decides to fuse with Gumball and Phineas! What will the result be, and will the resulting fusion win the battle? One-Shot and multi crossover. Everything belongs to their respective owners.

Isabella is super excited about the visit from her bestfriend: Mable, who is staying with her for the summer. But it's a two for once deal, you get Mable and you also get her twin brother Dipper. With the two new arrivals, do some feelings change? And how much trouble will the twins have added in the group of fun-loving inventors?

*Sequale to New Girl in Town* Phineas and Ferb create a device to enter their favorite T.V, show "Gravity Falls" Meanwhile Perry the Platypus and his boss must team up to stop Dr. Doofensmirtz from spreading his evil to this new location.

Sequel to Mermaid Swapping. Dipper and Mabel come to Danville for a visit, and Major Monogram is getting more and more suspicious of Perry, Pinky and Carl. Will they be able to hide Candace's secret when no one else knows that they really need to? Rated for paranoia.

A trip to the Tri State Area for a Swap Meet turns into an adventure for Mabel and Dipper, meanwhile Stan has some competition and Agent P has two VERY unexpected new recruits. Gravity Falls/Phineas and Ferb crossover.

Gravity Falls and Phineas and Ferb's Prince George of Cambridge note: Phineas and Ferb chit chat on Skype with Mabel and Dipper about The Royal Baby Prince, named George of Cambridge, and They really wanted to know about them. :D! - Rated K for Everyone. -

Lil' Gideon wants to have his own personal army. But real quickly, it becomes more than he can handle. So Dipper gets dragged into the problem. And with Phineas, Ferb, Perry, and some friends from Danville in Gravity Falls, things go awry very quickly.

First crossover story please no hate I'm new this site so please I'm still trying to find my way around. I respect critics as long as its constructive

Yes, the title's stupid. Couldn't think of anything better. Sequel to The Secret Life of Candace. You should probably read that first. The Flynn-Fletchers go to Gravity Falls and stay with the Pines family. Dipper finds a new section to his book that he missed before, and it opens up a world of secrets. T for blood and evil mermaids...bwahaha.

Phineas and Ferb need help with a music video, but Mabel doesn't do exactly what they say. *One-Shot*

Phineas, Ferb, Candace and Isabella are taken on holiday to the mysterious town of Gravity falls. When Phineas recieves a secret SOS message from Dipper and Mabel, he begins to realise that the sleepy town is not what is seems. And that he should trust nobody. DipperxWendy, PhineasxIsabella. No slash. No vampires. No werewolves. No underage you-know-what.

At O.W.C.A., Perry is talking with Monogram and Carl before suddenly, the elevator arrives with someone from another series to ask for something, what will he want?. There's brief german in the song part.

My first crossover :D This story is about Phineas, Ferb, Perry, Candace, and Stacey visiting Linda's brother-in-law, Manly Dan, in Gravity Falls. I own NOTHING but the plot. ADOPTED BY NinjaTurtleGal !