Big Ideas

===Season 2===
{|cellspacing=0 cellpadding=5 border=1
! width=80px  | Episode
! width=180px | Image
! width=180px | Big Idea
! width=180px | Disappearance
! Notes
|-
|"The Lake Nose Monster"
|[[File:The Lake Nose Monster Phineas petting Nosey.jpg|center|180px]]
|They built a boat to find proof of the existence of Nosey, the Lake Nose Monster.
|Phineas and Ferb decided ''not'' to reveal the existence of the Lake Nose Monster.
|
|-
|"Interview With a Platypus"
|[[File:Animal translator.jpg|center|180px]]
|They built an animal translator to help all the Danville animals with their complaints, but failed to hear what Perry said (look at notes).
|It didn't disappear, but didn't work when Linda saw it.
|The plan was originally for Perry.
|-
|"Tip of the Day"
|[[File:Phineas and his Aglet Awareness Ribbon.jpg|center|180px]]
|They increased public awareness of the aglet.
|Doofenshmirtz intended to erase an embarrassing viral video from every mind in the Tri-State Area, but accidentally erased aglets instead.
|This was the first time Phineas, Ferb, Isabella, Baljeet and Buford performed on stage together.
|-
|"Attack of the 50 Foot Sister"
|[[File:Shrunken watermelon.jpg|center|180px]]
|They helped Baljeet win the biggest-watermelon contest at the fair with a growth elixir.
|The growth elixir fell into Doofenshmirtz's hands, who thought it was his dirty nappy smell and put it in his Smell-inator, causing the whole universe to grow to an enormous size.
|Baljeet asked Phineas and Ferb to help him because they helped him with the portal to Mars.
|-
|"Backyard Aquarium"
|[[File:Backyard aquarium.jpg|center|180px]]
|They put on a backyard aquarium water show with many different sea animals.
|Doofenshmirtz's Hot Dog Vendor Revenge-inator hit the water, freezing it. Candace then leaned against it, causing it to slide into the ocean.
|The show was put on for Goldie, Phineas and Ferb's new pet.
|-
|"Day of the Living Gelatin"
|[[File:LivingGelatin.jpg|center|180px]]
|They created a giant gelatin mold in Isabella's pool.
|The gelatin monster went down the drain, causing Phineas, Ferb and their friends to believe it'd been defeated. However, it was really Doofenshmirtz calling it.
|They later tried to defeat it due to the mold becoming an evil monster.
|-
|"Elementary My Dear Stacy"
|[[File:Candace and Stacy riding the London Eye.jpg|center|180px]]
|They made a water slide around Big Ben and the London Eye.
|Doofenshmirtz's Big Ben rocket succeeded in a small take off, destroying the slide. The rocket then landed again at Perry's command.
|This was Phineas and Ferb's second water slide.
|-
|"Don't Even Blink"
|[[File:Riding the Big Obvious Ride.jpg|center|180px]]
|They made a fun carnival ride that spined you around.
|Doofenshmirtz's Invisinator zapped it, turning it invisible. Doofenshmirtz later hit it with his disintegrator ray
|Phineas and Ferb made it for the purpose of finding out where their creations disappear to.
|-
|"Chez Platypus"
|[[File:Chez Platypus.jpg|center|180px]]
|They built a trendy exclusive restaurant named "Chez Platypus", which failed to succeed for the new "Badger Restaurants".
|A company bought it and took it away.
|Their idea was inspired by a French restaurant Phineas and Ferb found disappointing.
|-
|"Perry Lays an Egg"
|[[File:SunniestDayEver.jpg|center|180px]][[File:PerryContraption.png|center|180px]]
|They found an egg they thought was Perry's and built a "Platy-posterior" in order to nurture it, but the machine was later replaced by Candace.
|N/A
|Before they found the egg their plan was to make it the sunniest day possible which didn't change anything.
|-
|"Gaming the System"
|[[File:Introducing the game.jpg|center|180px]]
|They recreated a video game named "Jump and Duck" to be able to go in the video game.
|The final boss exited the game and crushed it.
|This was the first time Phineas and Ferb were severely injured, even to the point of death.
|-
|"The Chronicles of Meap"
|[[File:Phineas catches the baseball.jpg|center|180px]][[File:Meap's rebuilt spaceship.jpg|center|180px]]
|They fixed [[w:c:hero:Meap|Meap]]'s ship in order for him to go back home, after it crashed on earth, and defeat Big Mitch.
|N/A
|Before meeting Meap they were playing baseball with a gadget they invented that could control the ball.
|-
|"Thaddeus and Thor"
|[[File:PnF fort.jpg|center|180px]]
|They built a backyard fort to see who's inventions were better.
|Phineas and Ferb turned the extension off to avoid zoning laws. It's unknown how they took the fort apart afterwards.
|The idea of a fort was bought up Linda in the Original Pitch. It also looked like Big Ben from "Elementary My Dear Stacy" with the water slide. This was the first project that Candace made the boys do to compete with Thaddeus and Thor.
|-
|"De Plane! De Plane!"
|[[File:Paper Pelican.jpg|center|180px]]
|They built a huge airplane made of paper mache called the Paper Pelican.
|It landed in water and dissolved.
|Later on, When the Paper Pelican descended into the lake, it began to dissolve in the water because it is after all made of paper mache. It was made to beat the Spruce Goose.
|-
|"Let's Take a Quiz"
|[[File:LetsTakeAQuiz.png|center|180px]]
|The boys created a game show.
|Doofenshmirtz's old Shrink-inator hit the set.
|Candace and Buford were the contestants in the show.
|-
|"At the Car Wash"
|[[File:Phin-tastic Ferb-ulous Car Wash.png|center|180px]]
|The boys helped the Fireside Girls raise money to save the Star-nosed mole by building a car wash.
|Doofenshmirtz's Mountain Out of a Molehill-inator hit the molehill underneath it, causing a giant starnose mole to grow, who (ironically) picked up the car wash and walked off with it.
|Jeremy invited Candace for a ride through the car wash in his mom's car.
|-
|"Oh, There You Are, Perry"
|[[File:Singing for Perry.jpg|center|180px]]
|Perry got relocated to a new nemesis and a new family, so Phineas and Ferb sang "[[Come Home Perry]]" to bring him home.
|N/A
|Perry was reassigned his original family and nemesis at the end of the day. This was also the first time they worry about Perry when he ran off.
|-
|"Swiss Family Phineas"
|[[File:Well there is living and there is luxuary.jpg|center|180px]]
|The family and Isabella got stranded on an island, so they built a Swiss style tree-house.
|The nearby volcano 'erupted' with 'pink lava' (Washing-up liquid) and washed it away.
|Candace needed to get home in time for Jeremy's party.
|-
|"Hide and Seek"
|[[File:Candance discovers the shrinking device.jpg|center|180px]]
|The boys shrunk themselves, their friends, and their new friend, Irving down to microscopic size to play an indoor game of hide-and-seek.
|Doofenshmirtz self-destructed one of his inventions, which happened to be near the machine.
|Irving was Phineas and Ferb's biggest fan. He carried a scrapbook of their big ideas with him everywhere.
|-
|"That Sinking Feeling"
|[[File:The ship in the backyard.jpg|center|180px]][[File:Mishti Flying.jpg|center|180px]]
|Phineas and Ferb helped Baljeet impress his childhood friend from India, Mishti with a romantic cruise.
|A lighthouse rocket crashed into it, making it sink.
|Mishti was one one of Baljeet's friends from India.
|-
|"The Baljeatles"
|[[File:The Baljeatles.jpg|center|180px]]
|Phineas and Ferb helped Baljeet to rock out for Summer Rocks Camp.
|colspan="1" rowspan="2"|N/A
|Phineas, Ferb, and Buford became a part of the Baljeatles.
|-
|"Vanessassary Roughness"
|[[File:I want to do this everyday.jpg|center|180px]][[File:Vanessa kisses Ferb.jpg|center|180px]]
|Ferb acquired some Pizzazium Infinionite for Vanessa, but Buford, Baljeet, Perry, [[w:c:hero:Stacy Hirano|Stacy]], and Candace were after it too. Phineas relaxed in a massage chair.
|Ferb helped Vanessa get the chemical for her dad to prove herself that she's responsible.
|-
|rowspan="2"|"No More Bunny Business"
|rowspan="2"|[[File:X-Ray Glasses.png|center|180px]][[File:Candace and Dennis.jpg|center|180px]]
|rowspan="2"|Phineas and Ferb made [[wikipedia:X-Ray Specs (novelty)|X-Ray Specs]] that actually used X-Rays.
|X-Ray glasses: N/A.
|rowspan="2"|Candace found a lost rabbit and named it Mr. Cutie-Patootie.
|-
|Carrots: Perry used a giant lair entrance to make all the carrots they ordered disappear below ground when his lair was taken over by a rogue agent.
|-
|"Spa Day"
|[[File:SpaPrepare2.png|center|180px]]
|Phineas and Ferb created a spa.
|Doofenshmirtz's new kitten, Mr. Fluffy Pants, accidentally used Doofenshmirtz's old Destruct-inator Ray to destroy the spa.
|Candace and Stacy also built a house with Jeremy before they went to Phineas and Ferb's spa.
|-
|"Phineas and Ferb's Quantum Boogaloo"
|[[File:Meeting Xavier and Fred.jpg|center|180px]][[File:PhineasIntroduceCandace.png|center|180px]]
|Phineas and Ferb used the time machine used in "It's About Time!" to go to the future to find a tool that hadn't been made yet. Phineas and Ferb ran into the future Candace and her kids.
|colspan="1" rowspan="2"|N/A
|The future Candace took the time machine to bust Phineas and Ferb for building the roller coaster. Isabella married one of the boys. They were seen doing things of the series' theme song.
|-
|"Musical Cliptastic Countdown"
|[[File:Cliptastic Countown invention.jpg|center|180px]][[File:Here's what I'm talkin' 'bout.jpg|center|180px]]
|Phineas and Ferb made something that we could not see. [[w:c:hero:Major Monogram|Major Monogram]] and Dr. Doofenshmirtz hosted a countdown of the favorite songs of Season 1.
|This was the first time a new project was seen, since the boys appeared for some seconds asking where Perry was.
|-
|"Bubble Boys"
|[[File:KidsGetInBubble.jpg|center|180px]]
|Created a giant bubble that they could travel through town in.
|The bubble eventually popped and they landed in the park.
|This episode showed that Buford had a soft spot.
|-
|"Isabella and the Temple of Sap"
|[[File:GirlsInFrontOfTemple.jpg|center|180px]]
|Isabella and the Fireside Girls got sap from a tree to help Phineas and Ferb make the bubble.
|N/A
|Ginger Hirano admited her liking of Baljeet. This happened during "Bubble Boys".
|-
|"Cheer Up Candace"
|[[File:Mix n Mingler.jpg|center|180px]]
|Phineas and Ferb helped cheer Candace up with a Mix and Mingle Machine after Jeremy canceled a date.
|Debris from Doofenshmirtz's Perry robots caused the machine to spin too fast, destroying it.
|In the beginning of the episode, Phineas and Ferb built a replica of The Temple of Angkor Wat out of playing cards.
|-
|"Fireside Girl Jamboree"
|[[File:FinalPackageDelivery.png|center|180px]][[File:MotionSicknesspatchEarned.png|center|180px]]
|Phineas and Ferb made Candace a Fireside Girl.
The previous day was their "biggest project ever" and they had to clean it up themselves. We saw a big piece with a picture of the Sun and a planet on it.
|The rollercoaster disappeared when Doofenshmirtz hit it with his Metal Destruct-inator, turning it into brocolli.
|Candace only did it to go to a sold out concert. She really didn't need to be a Fireside Girl because Isabella could bring guests. In order to earn Candace's "Delivering cupcakes patch", the boys built their second roller coaster. (Roller coaster)
|-
|"The Bully Code"
|[[File:Machine.gif|center|180px]]
|The boys built a giant contraption that put the life of Baljeet in great peril as soon as he standed on the X, so that Buford would save his life.
|It didn't disappear; but Linda saw it, thinking it was public art.
|They did this because Baljeet saved Buford's life, so according to the bully code Buford became Baljeet's slave. Baljeet hated this, so he turned to Phineas and Ferb. Linda saw the boys' contraption but she thought it's only public art.
|-
|"Finding Mary McGuffin"
|[[File:P&F in black and white.jpg|center|180px]]
|Phineas and Ferb helped Candace to retrieve her doll, which was accidentally sold off to Doofenshmirtz, then gave it to Vanessa.
|N/A
|Vanessa wanted it too. The doll was discontinued.
|-
|"Picture This"
|[[File:Matter Transporter in action.jpg|center|180px]]
|Phineas and Ferb created a transporter after Ferb left a skateboard back in England.
|Perry used it to transport Doofenshmirtz's new invention there, which then self-destructed.
|They also helped their friends find lost items.
|-
|"Nerdy Dancin'"
|[[File:NerdyDancin - Ferb Backstage LADTWS.png|center|180px]]
|Phineas and Ferb "taught" Jeremy how to dance using a metal exo-skeleton.
|N/A
|Jeremy and Candace were entered in "Let's All Dance Until We're Sick."
|-
|"What Do It Do?"
|[[File:WhatIsThis.png|center|180px]][[File:Dog shadow puppet.jpg|center|180px]]
|Phineas and Ferb figured out what an invention did using reverse-engineering.
|The first rocket took off after the arm that Perry used to get past the traps accidentally hit a red button. Ironically enough, it promptly fell in love with the second one and they took off together.
|It is Doofenshmirtz's anti-romance invention. It landed in Phineas and Ferb's front yard.
|-
|"Atlantis"
|[[File:Singing about Atlantis 1.jpg|center|180px]]
|Phineas and Ferb and their friends went to the beach and found the lost city of Atlantis.
|When they took it to the surface with giant helium balloons, spines from Doofenshmirtz's evil plants popped them so it sinked again.
|Irving was included in the adventure because he went into Phineas and Ferb's car while their mom got gas.
|-
|"Phineas and Ferb Christmas Vacation!"
|[[File:Bed Bobsleds.jpg|center|180px]][[File:Rest stop for Santa.jpg|center|180px]][[File:Christmas in Danville.jpg|center|180px]][[File:Christmas accomplished.png|center|180px]]
|Phineas and Ferb thanked Santa by decorating Danville and making a rest stop for him. After the effects of Doofenshmirtz's Naughty-inator, Phineas and Ferb released "[[Danville for Niceness]]" to get the attention of Santa Claus.
|The rest house disappearED when Santa tOOK it to the North Pole and useD it as a clubhouse. It is unknown how everything else disappeared.
|Then they saved Christmas for the Danville area (which is a typical thing to do in a Christmas special).
|-
|"Just Passing Through"
|[[File:JustPassingThrough 2.png|center|180px]]
|Linda lost her guitar pick, so Phineas and Ferb made an orb that went through anything and then used it to find their Mom's guitar pick.
|A steamroller ran it over.
|This invention saved Phineas and Ferb's life, by allowing a steamroller to safely pass through them.
|-
|"Candace's Big Day"
|[[File:Wedding day ice sculpture.png|center|180px]]
|Phineas and Ferb helped throw a wedding, for Aunt Tiana and Uncle Bob.
|Doofenshmirtz's Junk Food-inator hit it and melted it.
|The ice sculpture they made, was destroyed by Doofenshmirtz Junk food-inator because the liquid was warm and so the ice melted.
|-
|"I Was a Middle Aged Robot"
|[[File:Phineas and Ferb in a hot air balloon.jpg|center|180px]]
|Candace and Lawrence competed in a competition, so Phineas and Ferb and the Fireside Girls made a blimp to cheer on Candace and Lawrence.
|A nail from Doofenshmirtz's plane popped it.
|The balloon was run by the energy exercise. The balloon also included a tube-like "360-Fun Bounce" Lawrence and Linda saw the balloon, but apparently didn't care or were not aware it was built by the boys.
|-
|"Suddenly Suzy"
|[[File:PF replica of Niagara Falls.jpg|center|180px]]
|Phineas and Ferb built a replica of Niagara Falls so they could ride a barrel over it and Phineas and Ferb unknowingly tried to bust themselves.
|Buford sticked some Tuff Gum to the top, making it stick to Doofenshmirtz's Carbon Footprint-inator.
|They got the idea while under the broken sprinkler and Linda mentioned that it looked "like Niagara Falls".
|-
|"Undercover Carl"
|[[File:PFandFriendsintheairwithnogravity.png|center|180px]]
|Phineas and Ferb built an Anti-Gravity Fun Launcher but [[w:c:hero:Carl Karl|Carl Karl]] intercepted their plans and assumed they were working for Doofenshmirtz, so he was sent undercover to figure out what they were doing and Carl helped Phineas and Ferb build the Anti-Gravity Fun Launcher and use it.
|Doofenshmirtz stole it after his one was taken away by the police.
|This was the first episode where Carl played a lead role, and he came in direct contact with the boys and their friends for the first time.
|-
|"Hip Hip Parade"
|[[File:Tristateareaunificationday.jpg‎|center|180px]]
|Phineas and Ferb decided to help build floats for all the neighborhood kids in the yearly "Tri-State Area Unification Day" parade.
|Doofenshmirtz's Duplic-8-inator hit the balloons above them the floats, so they floated away.
|Candace was out with Linda all day, and had promised not to obsess about the boys for the day, but seeing the parade go by made the temptation too irresistible.
|-
|"Invasion of the Ferb Snatchers"
|[[File:Ferbsnatchershideousballofgoo.png|center|180px]][[File:Garbog flying to the spacecraft.jpg|center|180px]]
|After watching a sci-fi movie marathon, Candace became convinced that Ferb was an alien, but it was revealed that Phineas and Ferb built a spacecraft for Garbog, an actual alien friend of Meap's.
|The launch pad that Phineas and Ferb made was wrapped up in a nice little bow, because it was shot by Doofenshmirtz's Wrapped Up in a Nice Little Bow Inator.
The Linda robot controlled by Garbog disappeared after he flied off.
|In the end, Ferb was not an alien, and there were logical explanations for all of her proof. For example, Candace thought she saw Ferb's head floating in liquid in a jar, but the jar only contained the liquid and Ferb was standing behind it; and when Candace thought she saw Ferb's head ripped off, but she had mistaken him for a cord in a tent.
|-
|"Ain't No Kiddie Ride"
|[[File:Ain't No Kiddie Ride.jpg|center|180px]]
|Phineas and Ferb tricked out kiddie rides at a store.
|The rides were taken away and replaced with brand new identical ones.
|Candace ended up flying around town uncontrollably, and the boys and their friends had to save her. Ferb literally saved her life while she was plummeting off a cliff by doing the impossible - slingshot a quarter right into the slot on the rocket.
|-
|rowspan="2"|"Not Phineas and Ferb"
|rowspan="2"|[[File: Holographic Eiffel Tower.jpg|center|180px]]
|rowspan="2"|Phineas and Ferb went to the movies, but Baljeet and Buford posed as Phineas and Ferb beside a giant hologram of the boys' Eiffel Tower construction.
|Baljeet: He turned off the projector.
|rowspan="2"|This was done for Irving's brother Albert because he didn't believe that Phineas and Ferb were anything special.
|-
|Perry: He re-shrunk the Eiffel Tower and lifted it back up.
|-
|rowspan="2"|"Phineas and Ferb-Busters!"
|rowspan="2"|[[File:Tra-la-la Hey hey.jpg|center|180px]][[File:Spinningtops.png|center|180px]]
| rowspan="2"|Phineas and Ferb created an unlimited power supply to propel a group of cyclone-like vehicles known as "Spinning Tops of Doom."
|Amusement park thing: Unknown
|rowspan="2"|Candace could've easily busted the boys in this episode, but because she was waiting for a signal from Stacy and [[w:c:hero:Jenny Brown|Jenny]] in the backyard (which never came; their headsets were destroyed), the tops disappeared. At the beginning they showed an amusement park type thing containing their third Roller coaster.
|-
|Spinning tops: Buford turned the power supply up to Danger, so the tops ended up flying away.
|-
|rowspan="2"|"The Lizard Whisperer"
|rowspan="2"|[[File:Froyo machine.jpg|center|180px]][[File:Lizard Whisperer image 1.jpg|center|180px]]
|rowspan="2"|The boys built a giant frozen yogurt machine to last them the summer, later they spied a chameleon and decided to keep him as a pet.
|Giant Steve: Doofenshmirtz accidentally turned on his Gigantinator Ray and shrunk Steve back to his normal size.
|rowspan="2"|This invention was built at the start of the episode, and quickly destroyed when Steve the chameleon grew to a gigantic size. Ferb gave a really long speech.
|-
|Frozen Yogurt Machine: Giant Steve stepped on it, crushing it.
|-
|"Robot Rodeo"
|[[File:Backyard rodeo.png|center|180px]]
|The boys hosted a rodeo with robot bulls.
|The bulls were enraged by a red balloon. When the kid let go of it, the bulls chased it, taking the rodeo with them.
|Isabella's hair got frizzy.
|-
|rowspan="2"|"The Beak"
|rowspan="2"|[[File:Flying Around Course With Grapple.png|center|180px]][[File:The Beak.jpg|center|180px]]
|rowspan="2"|A super villain arrived in Danville to challenge Phineas and Ferb after the boys were mistaken as a superhero (while wearing an indestructible suit they designed to safely conquer their newly built extreme skate-track) known as The Beak. With the super villain wreaking havoc, it was up to Phineas and Ferb to thwart him.
|Skate Track: To stop flying, the Beak used his grappling hook to latch onto the skate park, knocking it down.
|rowspan="2"|They initially built a super skate ramp of doom. After realizing the dangers of the ramp, they built the super suit to protect themselves.
|-
|The Beak Suit: After Phineas and Ferb revealed they were the Beak, Perry used the suit to defeat Doofenshmirtz.
|-
|"She's the Mayor"
|[[File:Pioneer Village.jpg|center|180px]]
|Phineas and Ferb built an authentic log cabin and a pioneer village using only their dad's antique collection of pioneer tools to do it.
|Doofenshmirtz's Accelerate-inator rewinded time and eventually ripped it to shreds, creating a new, alternate dimension.
|This was fourth time that Candace busted her brothers, though the giant time lapse that Doofenshmirtz caused by his Accelerate-inator made it never happen.
|-
|"The Lemonade Stand"
|[[File:The lemon juice maker.jpg|center|180px]][[File:Lemonade2.jpg|center|180px]]
|After Candace asking them if they could think of something normal to do for a change, they built a very typical lemonade stand and began to offer franchise opportunities
|The robot was cut by Doofenshmirtz's Paper Cut-inator. Lemon juice poured into the cut, destroying the robot, ending the franchise.
|In order for Phineas and Ferb to make the lemonade, they made a giant machine that looked similar to a robot, so it could produce the lemonade. It later got destroyed by Doofenshmirtz's Paper-Cut Inator.
|-
|rowspan="2"|"Phineas and Ferb Hawaiian Vacation"
|rowspan="2"|[[File:Phineas and Ferb with A-Primes.jpg|center|180px]]
|Part I: Phineas and Ferb bought Aqua Primates and used their growth elixir to make them grow to be human sized.
|Part I: Doofenshmirtz's De-Evolutionator, which was set on reverse, hit the A-Primes, evolving them into humans.
|rowspan="2"|Part I: The growth elixir was used on Candace in "Attack of the 50 Foot Sister."
Part II: They rided a large wave.
|-
|Part II: They helped Candace make it to the top of Mount Wa Ta Lot Ta Hoie.
|Part II: N/A
|-
|"Phineas and Ferb Summer Belongs to You!"
|[[File:SBTY.jpg|center|180px]][[File:SBTY3.jpg|center|180px]]
|Phineas and Ferb built the "Sun-Beater 3000" and flied around the world in one day. The day before they made a jump roping robot.
|Jump Roping Robot: Not shown, but it was caught on the tail of the airplane Doofensmirtz and Vanessa were riding to Paris.
Sun-Beater 3000: It was gradually destroyed as they went along until only the seats were left.
|It was the summer solstice and because it was the longest day of the year.
|-
|"Nerds of a Feather"
|[[File:Fantasy vs. Sci-Fi.jpg|center|180px]]
|Phineas and Ferb headed to the Tri-State area's annual sci-fi/comic-book convention to meet their hero, special effects guru Clive Addison.
|colspan="1" rowspan="2"|N/A
|Their plan got sidetracked when they were swept into a duel between fantasy fans and sci-fi geeks.
|-
|"Wizard of Odd"
|[[File:Cleaning the House.jpg|center|180px]]
|Phineas and Ferb cleaned the house by spinning it. They later built a giant unicycle.
|During the dream, they built several alternate routes for Candace, but she refused to go on any of them.
|-
|"We Call it Maze"
|[[File:The Labyrinth.jpg|center|180px]]
|Phineas and Ferb built a challenging labyrinth in their backyard.
|Doofenshmirtz's Tilt-inator caused it to roll away.
|However, Doofenshmirtz's invention made the labyrinth rolling away.
|-
|"Ladies and Gentlemen, Meet Max Modem!"
|[[File:Max Modem Entrance.jpg|center|180px]]
|Phineas and Ferb decided to turn his father into "Max Modem", an unknown singer from the 80s.
|N/A
|Lawrence felt depressed because his wife was going to forget him because she would meet exciting and fun people.
|-
|"The Secret of Success"
|[[File:Phineas and Ferb's All Terrain Vehicle.jpg|center|180px]]
|After watching a commercial for an all-terrain vehicle, Phineas and Ferb built a better model - one that could drive on literally any type of surface.
|Ferb activated Rocket Mode and flied to the Moon.
|The truck turned into a rocket and flied away before Linda saw it.
|-
|"The Doof Side of the Moon"
|[[File:Phineas and Ferb's Building.jpg|center|180px]]
|Phineas and Ferb decided to build the "World's Largest Building" in order to make Danville more popular.
|Doofenshmirtz's Lunar Rotate-inator hit the Moon, which the building was attached to, causing it to fly away.
|Doofenshmirtz's invention drove it away.
|-
|"Split Personality"
|[[File:I gotta show this to mom!.png|center|180px]]
|Phineas and Ferb created a machine that splited an object into its components, but their cover was blown with Candace and her double one.
|Candace accidentally stepped on a rock, which really activated Perry's lair entrance, which the Molecular Separator was stood on.
|They had to get the two Candaces before they got in trouble.
|-
|"Brain Drain"
|[[File:AtBed.png|center|180px]]
|Phineas, Ferb, Isabella and Baljeet were in bed because they were sick and they, along with Buford, played video games that let them compete against another friend.
|N/A
|Later, they accidentally got the video feed from a junkyard rave where Perry and Doofenshmirtz were fighting. They all controled a part of Perry, to fight Doofenshmirtz, thinking it was a Perry based level in the game.
|-
|"Rollercoaster: The Musical!"
|[[File:Rollercoaster_the_Musical.jpg|center|180px]]
|Phineas and Ferb built their rollercoaster from "Rollercoaster" again, but this time, as a musical.
|Same as "Rollercoaster."
|This was the fourth rollercoaster they'd built.
|-
|"Make Play"
|[[File:The-jukebox.png‎|center|180px]]
|Phineas and Ferb built a huge jukebox after Lawrence told them about it.
|Doofenshmirtz's Super-Claw-inator picked it up and took it away.
|The jukebox was afterwards used at the opera house.
|-
|"Candace Gets Busted"
|[[File:Not their party.jpg|center|180px]]
|After Candace's "intimate get together" turned into a house party, they ate potato chips while a crowd cheered them on.
|Doofenshmirtz's Go-Away-Inator took away the party, but Perry set the ray to reverse and brought the party back to the backyard.
|Candace asked Phineas and Ferb to stay out of the way, so they didn't do anything.
|}