Phineas and Ferb and Gravity Falls Crossovers
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Brothers- The Origin of Bill Cipher by TheReturnToTheFalls reviews
Several years after Weirdmageddon, Bill Cipher returns to reek havoc on those meat bags called humans. However, his awakening has brought unwanted attention from a long lost soul, his brother. Will Bill succeed, or will he be defeated by his own past.
Rated: T - English - Mystery/Adventure - Chapters: 5 - Words: 9,323 - Reviews: 15 - Favs: 10 - Follows: 13 - Updated: 2/5 - Published: 9/30/2016
The Halfheart and the Pinetree by Speed the Hedgehog reviews
Whan Dipper and Mabel are sent to attend Daville Highschool for the year, they meet many new friends and encounter old enemies. And what happens when one of the biggest threats from the past return and barge in their lives again? They call on help from two young boys, one with a huge secret. AU!Phineas(sorta, you'll see) Bkglv!
Rated: T - English - Romance/Adventure - Chapters: 3 - Words: 6,570 - Reviews: 5 - Favs: 9 - Follows: 12 - Updated: 1/13 - Published: 12/1/2015
Plan B by San Diego Jacket
Takes place after "The Beginning of the End" and "Reconnecting Old Ties". Four years after their trip to Gravity Falls, Phineas, Ferb, and Nicole decide to visit the Pines again for a few weeks. However, a discovery is made, causing memories to resurface as everyone tries to figure out what really happen all those summers ago.
Rated: T - English - Friendship/Mystery - Chapters: 2 - Words: 4,808 - Favs: 1 - Follows: 1 - Updated: 1/7 - Published: 10/22/2016 - Phineas, OC, Dipper P., Mabel P.
ferbel p1 by falcon52 reviews
I have to make my first fanfics amazing, fuzz balls (I call people that im weird, sillies) its about well read but related stories on the way love you (in a brotherly sisterly in Christ way)
Rated: K - English - Family - Chapters: 2 - Words: 1,555 - Reviews: 3 - Updated: 8/26/2016 - Published: 8/11/2016
Phineas and Ferb go to Gravity Falls by RebootHipster reviews
As Phineas and his friends travel on vacation to Gravity Falls, they meet the Mystery Twins and embark on a dangerous adventure in order to seize the day. Meanwhile, Doofenshmirtz gets into all kinds of trouble in this strange new town.
Rated: K+ - English - Humor/Adventure - Chapters: 26 - Words: 19,091 - Reviews: 117 - Favs: 45 - Follows: 27 - Updated: 4/1/2016 - Published: 9/13/2015 - Phineas, Dr. Doofenshmirtz, Dipper P., Grunkle Stan - Complete
Semi-Final Showdown by Mitchell Movie Productions
The Tigers, The Lions, 2 rivals, a playoff game. Winner gets to go to State. Meanwhile, Mabel finds out about that Ford adopted 2 girls that happen to be Dipper and Mabel's long lost sisters. Sherman and Penny are planning their 1st date, Phineas finds out that Dipper wants him to break up with Mabel, and Goten has a chance to make a name for himself in Tiger History.
Rated: T - English - Friendship/Drama - Chapters: 2 - Words: 1,755 - Favs: 2 - Follows: 2 - Updated: 1/18/2016 - Published: 12/31/2015 - [Phineas, Mabel P.]
Inventions, Supernaturals, Evil Scientist, Oh My! by AnimationNut reviews
AU. Phineas and the gang are heading to Gravity Falls. Dr. Doofenshmirtz just happens to be setting up his latest -Inator there, and throw in the Pines twins and you know something epic is going to happen.
Rated: K+ - English - Humor/Friendship - Chapters: 25 - Words: 52,095 - Reviews: 221 - Favs: 117 - Follows: 120 - Updated: 11/29/2015 - Published: 10/2/2012 - Phineas, Ferb, Dipper P., Mabel P. - Complete
Unleash the Shadow by Marissa Flynn reviews
Parody of "Unleash the Magic" from My Little Pony: Equestria Girls: The Friendship games. One-Shot. I own NOTHING
Rated: K - English - Parody - Chapters: 1 - Words: 889 - Reviews: 3 - Favs: 4 - Published: 10/23/2015 - Phineas, Bill - Complete
Dipper and Mabel by PFDroids5198 reviews
So this is technically a crossover if people want it I will make a story out of this. This is subject to change!
Rated: K - English - Chapters: 4 - Words: 3,560 - Reviews: 8 - Follows: 2 - Updated: 9/20/2015 - Published: 6/12/2015 - Dipper P., Mabel P., Wendy
Letting Go by shopgirl152 reviews
Ferb has spent the past eight years living with an accident he couldn't prevent. But when tragedy strikes a second time, he finds his life turned upside down and discovers that letting go might be the hardest thing of all.
Rated: T - English - Tragedy/Hurt/Comfort - Chapters: 4 - Words: 6,988 - Reviews: 6 - Favs: 9 - Follows: 3 - Updated: 5/25/2015 - Published: 5/17/2015 - Phineas, Ferb, Dipper P., Mabel P. - Complete
Ice Cream by mgl1016 reviews
When two strange visitors come to the Mystery Shack, Mabel finally gets the summer romance she's been waiting for.
Rated: K - English - Romance/Friendship - Chapters: 1 - Words: 934 - Reviews: 4 - Favs: 12 - Follows: 6 - Published: 4/10/2015 - Phineas, Ferb, Dipper P., Mabel P.
another puppet to my use by moonwolfdragonfox reviews
gravity falls is host to a lunar eclipse when the flynn-flecther arrive, and phineas, ferb and isabella will find out why this place is dangerous, as dipper and mabel prepare for the fight of their life. warning there will be brother feels and fighting, a little swearing, might change the rating. inspired by turning the tides tumblr and dog gone it tumblr.
Rated: T - English - Hurt/Comfort/Adventure - Chapters: 9 - Words: 19,010 - Reviews: 3 - Favs: 5 - Follows: 7 - Updated: 3/31/2015 - Published: 10/14/2014 - Phineas, Ferb, Dipper P., Mabel P.
Romance Failure 6 by AugustRaes reviews
"But does it count a success if he forgets me the minute he leaves...?" Suggested Ferb/Mabel.
Rated: K - English - Hurt/Comfort - Chapters: 1 - Words: 450 - Reviews: 2 - Favs: 9 - Follows: 5 - Published: 1/10/2015 - Ferb, Dipper P., Mabel P. - Complete
The Beginning of the End by San Diego Jacket reviews
Takes place after "Gideon Rises". For the last few weeks, Bill has pestered Dipper about some plan of his, only missing two things: "Glasses" and "Llama". Meanwhile, the Flynn-Fletchers and Nicole Bonabel have won a trip to Gravity Falls, while Nicole gets weird dreams about a triangle and "Pine Tree". Is it a coincidence? Or is something more at play? Rated for later chapters.
Rated: T - English - Supernatural/Mystery - Chapters: 28 - Words: 55,657 - Reviews: 23 - Favs: 12 - Follows: 10 - Updated: 12/23/2014 - Published: 6/17/2014 - OC, Dipper P. - Complete
Erase the Past by PFTones3482 reviews
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)
Rated: T - English - Hurt/Comfort/Romance - Chapters: 1 - Words: 2,435 - Reviews: 5 - Favs: 17 - Follows: 5 - Published: 11/12/2014 - Ferb, Mabel P. - Complete
The Cipher-inator! by Sensorfire reviews
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!
Rated: K+ - English - Mystery/Family - Chapters: 1 - Words: 372 - Reviews: 1 - Published: 10/27/2014
The Lost Journal by Jimmy Casket reviews
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.
Rated: T - English - Supernatural/Adventure - Chapters: 1 - Words: 807 - Reviews: 2 - Favs: 4 - Follows: 6 - Published: 10/17/2014 - Isabella, Phineas, Ferb, Dipper P.
The Book of Destiny by GoldenLeopard247 reviews
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
Rated: K+ - English - Adventure/Mystery - Chapters: 1 - Words: 549 - Reviews: 10 - Favs: 6 - Follows: 8 - Published: 8/1/2014 - Phineas, Ferb, Dipper P., Mabel P.
Gideon's Revenge by waffleman1314-AJ ThaPlatypus reviews
The sequel to The Mysterious Dimension is here! Gideon finds a way to travel across dimensions without Doofenshmirtz's inators. He plans to exact his revenge on all, but the Pines twins gang up with Phineas, Ferb, and Perry once more to make sure Gideon's plan fails. *Stopped*
Rated: T - English - Adventure/Humor - Chapters: 5 - Words: 7,152 - Reviews: 9 - Favs: 7 - Follows: 13 - Updated: 7/16/2014 - Published: 1/27/2014 - Perry, Dipper P.
Phineas in Gravity Falls-Short Version READ DESCRIPTION by Brittyboo99 reviews
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!
Rated: K - English - Adventure/Mystery - Chapters: 1 - Words: 134 - Reviews: 1 - Published: 7/3/2014
The Triangle Enigmatic by HalyPooH reviews
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
Rated: T - English - Adventure/Romance - Chapters: 6 - Words: 18,014 - Reviews: 24 - Favs: 20 - Follows: 25 - Updated: 4/14/2014 - Published: 12/3/2013
Una peña de locura by guillermosc2001 reviews
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.
Rated: K+ - Spanish - Humor/Adventure - Chapters: 7 - Words: 13,619 - Reviews: 11 - Favs: 3 - Follows: 2 - Updated: 12/26/2013 - Published: 11/10/2013
Here comes Gumbelneas! That's her name, right? by Exotos135 reviews
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.
Rated: K+ - English - Parody/Humor - Chapters: 1 - Words: 2,480 - Reviews: 5 - Favs: 2 - Follows: 1 - Published: 11/10/2013 - Complete
A New Summer by suddenlyperry reviews
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?
Rated: K+ - English - Adventure/Friendship - Chapters: 1 - Words: 1,156 - Reviews: 14 - Favs: 11 - Follows: 16 - Published: 10/15/2013 - Isabella, Phineas, Dipper P., Mabel P.
Cross Dimensional Visitors by kingofmusic reviews
*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.
Rated: T - English - Adventure - Chapters: 5 - Words: 7,261 - Reviews: 11 - Favs: 12 - Follows: 7 - Updated: 9/8/2013 - Published: 8/31/2013 - Phineas, Ferb, Dipper P., Mabel P.
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