Adventure Time Episode Rating Graph

The Ice King and Marceline bond over song and memories.

An unexpected revelation from Susan leads Finn closer to answers about his past.

Finn and his friends journey to a last refuge called Founders Island.

After a magic spell backfires, the Ice King reverts back to Simon, and seeks help from Finn, Jake, and Marceline in order to get Betty, his former fiancée, back.

Finn and Jake follow the Lich to the Citadel, where Finn meets his long lost dad. But just how far does the apple fall from the tree?

As the sun rises on her last day, Marceline recalls her long extraordinary life.

Finn and his friends must come together as a genuine band in order to open the gate of the Door Lord and get back their taken items.

BMO accidentally deletes his core system files. Finn and Jake disguise themselves as MOs to infiltrate the MO factory and save BMO from a memory wipe.

Following an ally's memorial service, Jake begins acting strangely.

Part 3 of a three-part episode. Finn and Jake chase the Lich through a dimensional portal and meet a wishmaster. After the Lich wishes that humanity never existed, Finn wishes that the Lich never existed.

Trapped and alone, Finn must unravel the riddle of the weird cave with no exit.

While exploring some futuristic ruins, Susan sees glimpses of a familiar girl.

The Snow Golem visits the Fire Kingdom and finds an unlikely follower.

The final confrontation begins. Who will survive?

The Ice King summons an army of snowmen to recover the secret tapes Finn and Jake are watching. They must work against the clock to find out the secrets enclosed within.

A visit from the Lich King sheds light on Ooo's secrets.

Finn, Jake and Orgalorg converge with the comet and meet their destiny.

In order to find Finn's father, Finn and Jake must commit a cosmic crime...unless the Lich beats them to it.

Finn finds the hero Billy's bucket list and decides to complete the unfinished items as a final tribute.

Jake embarks on a solo mission to help a broken-hearted Finn.

While dwelling on a joke he told to Flame Princess, Finn finds himself trapped in a strange pillow world.

Finn and Jake enter Marceline's mind to awaken her from a sleep spell she had cast on herself, without knowing that they are being tricked by a person from her past.

Finn and Fern's carefree visit to some old ruins turns disastrous.

Finn and Jake puzzle over the nature of a mysterious newcomer.

Finn and Jake crossover into Farmworld Finn's dimension.

Jake wants to fulfill a bizarre lifelong ambition.

Princess Bubblegum may be jealous when Finn start hanging out with Flame Princess.

In a distant age, the wizard Evergreen quests to save the world.

Finn receives a bag full of miniature versions of his friends.

Finn and Jake decide it's time for Finn to get a new sword. Finn reluctantly buys a grass sword from a mysterious old man, but the sword turns out to be cursed! And unfortunately for our hero, all sales are final.

The friends learn the story of what happened to Ooo, while Betty continues her attempt to reach Simon, but she's interrupted by someone out to steal her magic.

While Princess Bubblegum searches for a cure for Marceline, Finn and Jake take on one of the Vamps themselves.

On the eve of battle, Marceline's archenemy comes to her with a strange proposal.

Jake crafts the most delicious sandwich ever, but when Magic Man steals it, Finn must defy the laws of space and time to win back Jake's creation.

Finn and Jake play Cloud Hunt in Marceline's house, but they get trapped in her closet after she comes home.

The Earl of Lemongrab takes over the Candy Kingdom due to Princess Bubblegum's age regression, forcing her and Finn to try and get rid of him even if it means a life-altering decision.

Five foes from Marceline's past come back to cause trouble for the Land of Ooo.

In this gender-swapped episode, Fionna and Cake must battle the evil Ice Queen.

Finn develops a crush on Flame Princess and tries to get to know her, which proves difficult due to her destructive power.

Finn, Jake, Marceline, and PB set out to hunt down the Vamps. But who is hunting them?

Jake's dad presents a strange challenge to the guys when he appears to them in a holographic message, telling them about a dungeon he made for them.

Finn and Jake travel to a land where reality has been redesigned and improved.

While searching for old human artifacts, Jake, Finn, and Susan Strong meet Tiffany, who is employed by a mysterious Doctor Gross.

Finn and Jake play Card Quest, an epic game.

A long lost artifact causes Princess Bubblegum to harken back to the creation of the Candy Kingdom.

Marceline's evil father goes on a soul-sucking rampage after Finn and Marceline accidentally release him from the Nightosphere.

After saving Finn the human during a battle between the candy kingdom and the fire kingdom it is discovered that LSP is made of anti-elemental magic and restores Ooo to it's former state.

BMO makes his way home after being snatched by an eagle. On its way, BMO meets Bubble and a baby, and the three decide to journey home together.

When one of her oldest adversaries targets the Ice Kingdom, Marceline rushes to Simon's rescue.

After Susan Strong's chip is activated, she goes rogue and attacks Finn.

Finn and Jake are called to solve a Candy Kingdom hostage crisis when a rogue cookie takes over.

After killing Princess Bubblegum's plant when left to take care of it, Finn and Jake make a trip to the Land of the Dead in order to get it's soul back.

Ice King suffers a heartbreaking loss and it's up to Finn and Jake to find the culprit.

In order to fulfill his grand destiny, Jake is spirited away by a strangely familiar shape-shifting alien.

Finn has to give a speech at Princess Bubblegum's science barbecue and seeks a quick fix to make himself smarter.

Finn doesn't like any of the new arms the princesses give him, so he builds a tower into space to find his dad and get his old arm back. But are his hopes up a little too high?

When Ice King's magic crown goes haywire, Marceline and Princess Bubblegum resort to extreme measures to help him.

Finn and Jake hunt a shadowy predator and Marceline asks Princess Bubblegum for a favor.

Part 2 of a three-part episode. Finn and Jake chase the Lich through a dimensional portal and meet a wishmaster. After the Lich wishes that humanity never existed, Finn wishes that the Lich never existed.

After seeing Marceline the vampire queen torment an elderly henchman, Finn steps in to be her new henchman, doing whatever he is told to do.

A mysterious craft invades Ooo and Finn believes it may hold the secrets to his past.

Jake's a daddy, but being a father and keeping his rainicorn pups from killing themselves or each other is a lot harder than he imagined.

Doctor Princess thrusts a great responsibility upon Finn. Jake goes adventuring with a new friend.

Finn hears a mysterious song while judging a Battle of the Bands.

Bubblegum turns to Marceline's help when something threatens the citizens of her homestead.

Finn and Jake storm Magic Man's house to rescue his new apprentice.

Finn and Jake attempt to rescue Marceline and find out what's making her behave so strangely.

After waking up alone and shipwrecked, Finn investigates a bizarre island in search of his friends.

Finn's spirit is drawn into the astral plane by the power of the mysterious comet.

While safeguarding a frightened Sweet P, Finn is led into a confrontation with an old foe.

Wanting to surprise Finn on his birthday, Jake takes Finn on a train, where they get wrapped up in a murder mystery.

Finn and Jake's parents hunt an unearthly menace in the woods.

Finn and Jake search the land of Ooo for a new home after Marceline claims the duo's treehouse as her own.

Marceline tracks the Sky Witch, but finds out that she may need Princess Bubblegum's help.

When an old flame comes calling on urgent business, Tree Trunks reconsiders both her wild past and her tranquil present.

Finn and Jake agree to help a snail named Snorlock find a girlfriend.

Tree Trunks and Mr. Pig are celebrating the wedding of the year.

Finn and Jake attempt to track down President Porpoise before Vice President Blowfish takes over.

Princesses lose body parts under mysterious circumstances.

Ice King has a plan to form a perfect circle of confidants.

The guys challenge a monster to a fight but end up battling each other.

The arrival of a visitor causes Cherry Cream Soda's life to fall flat.

When Finn gets trapped in a giant spider web, he ends up playing marriage counselor to a couple of grumpy arachnids.

Once a month, while Jake's asleep, his tail stretches out of the tree house to go work as a clown in a traveling bug circus.

In order to do research for her tell-all memoir about men, Lumpy Space Princess goes undercover working for Finn and Jake.

The beautiful and sensitive Lumpy Space Prince flees his cruel parents to start a new life.

Lemongrab and Finn go on an expedition through the Mountain of Matthew.

When Tree Trunks's apples go missing, she, Finn and Jake descend into the dark side of the Candy Kingdom in order to find the thief.

Big money problems send Finn and Jake to Wildberry Kingdom.

Tree Trunks and Mr. Pig's child, Sweet P, runs into trouble on his first day of school.

A fed up Lumpy Space Princess leaves the woods for a glamorous career in babysitting.

An otherworldly encounter puts Tree Trunks on the trail of a conspiracy in the Candy Kingdom.

Finn takes a group of at-risk Candy Kingdom youth on a camping trip they’ll never forget.

It's Princess Day in Ooo! You know what that means? Yep, LSP and Marceline team up to prank Breakfast Princess!

The loyalty of Finn and Jake comes into question when the King of Ooo orders them to intercept a flying mushroom.

While performing a reading of 'Fiona and Cake', Ice King is confronted by a familiar figure.

Love is in the air when Lumpy Space Princess reconnects with an old classmate, but will her jealousy get in the way of finding true love?

Finn and Jake try to help an obnoxious grass ogre named Donny develop better social skills, only to find out Donny's jerky behavior protects the house people from the why-wolves, which eat the house people.

Viola tries to get a part in LSP's play, but gets made into LSP's personal assistant instead.

Finn meets the Box Prince—a cat with a box on its back—and learns that the Box Kingdom has been taken over by an imposter. Finn must therefore help the real Box Prince reclaim the throne.

When disaster befalls James Baxter, it’s up to Finn and Jake to help him pick up the pieces.

Finn and Jake are excited to meet the Nice King who has come to Ooo. They soon realize that he looks suspiciously like someone else they know; the Ice King.

The Ice King gets married but not before he convinces Finn and Jake to throw him a manlorette party.

Kim Kil Whan is worried about his daughter's future and asks Jake for some parental advice.

On a field trip to the Candy Kingdom Museum of Natural History, Finn and Jake learn about the food chain by becoming the food chain!

When Finn gets a splinter on his finger, he wants to get the best armor. In order to receive it, he must go on a quest to get the Magical Armor of Zelderon and survive one embarrassing situation after another.

Cyclops tears may heal Finn and Jake's broken toes.

Finn goes through a transformation after a run-in with a hug wolf.

After being transformed into a foot, Finn joins forces with a band of misfits to make things right.

Library books seek help from Finn and Jake to save them from the evil Moldari.

Ice King gets super jealous when he finds out that he wasn't invited to the Princess Potluck.

When Flame Princess is coaxed into a high stakes battle against the indomitable Son of Rap Bear, Finn must help her search for a new strategy.

Finn must travel to Lumpy Space to find a cure that will save Jake, who was accidentally bitten by Lumpy Space Princess at a tea party.

Finn's dad Martin the Human fights for freedom on a strange new planet!

BMO and Ice King hit the road as door to door salesmen and stumble upon an irresistible opportunity.

A series of short stories all centered around a common theme, hosted by a mysterious man named Cuber from the future.

When the Ice King kidnaps a number of princesses he sees as potential brides, Finn and Jake team with the prisoners to set everybody free.

Lumpy Space Princess is robbed, but before she is able to explain the details to Finn and Jake, she faints.

A shadowy figure named Peace Master targets the Candy Kingdom elite.

A bear cozies up to the guys, but his true intentions may be hidden.

Frog People seek protection from an evil lizard who's attacking their swamp.

Finn's latest literary work meets with only derision, so he sets out to prove all the naysayers wrong.

Finn and Jake join Tree Trunks in search for the rare Crystal Gem Apple, but question whether Tree Trunks has what it takes to adventure.

Xergiok, the former Goblin king who was deposed by Finn and Jake claims to have turned over a new leaf.

Jake's son TV discovers a lost diary and sets out to solve a decades-old mystery.

In order to save Ooo, Finn and Jake must gather the four elemental gems. They go to the Slime Kingdom and have to gather Slime Princess's gem.

After another one of his schemes fails, the Ice King decides to give up.

The king and queen of Lumpy Space ask Finn and Jake to bring their daughter back home. At the same time, they attempt to stop a "monster" from destroying a village.

Finn and Princess Bubblegum must protect the Candy Kingdom from a horde of candy zombies they accidentally created.

Finn and Jake follow their Sea Lard into the pond in front of their home, and in doing so, are led to a strange new world.

When the Fluffy People's gold has been devoured by a culprit only known as "The Gut Grinder", Finn and Jake team up to find him with his tracks.

Tired of all of Princess Bubblegum's talk about "responsibility," Lemonhope yearns for true freedom. So he sets off on the greatest adventure of his lemony life.

Finn and Jake consider breaking up after a witch strips Jake of his powers.

Jake's son finds a hidden box and draws attention from a Rainicorn.

Finn and Jake find the Ice King's video diary and have a chance to unearth his secrets.

BMO convinces his friends to join him in a live action cowboy role-playing game.

When Finn begins having nightmares about his missing Finn Sword, he wonders if they are real.

When Finn and Jake stumble into two different holes, they meet two different fates.

When a Heart Guy named Ricardio comes to Candy Kingdom, Finn gets really jealous and finds a way to get him out of the Land of Ooo.

After helping with the creation of a new sword, Hunson Abadeer comes back to try and regain his daughter's love.

With a friendly bee named "Breezy" as his wingman, Finn decides to get back into the dating game.

Finn and Jake must defend their home from the Cuties, a tiny race who believe themselves to be evil, destructive invaders.

Ice King and a band of misfit wizards go on a mystical road trip.

Finn brings a pie-throwing robot to life, but the machine begins to long for a more fulfilling existence.

Finn, Jake, and Princess Bubblegum are attacked by nasty goo monsters in the Desert of Wonders.

Finn and Jake stumble across a horse named James Baxter who has the ability to make sad people feel better.

A jiggly creature attracted by Finn's auto-tuned singing follows Finn and Jake home but soon feels ill effects of separation from its family.

The great warrior Billy inspires Finn and Jake to practice nonviolence, but the duo finds it difficult to resist old ways.

Finn and Jake discover that Clone James has been faking his own death to collect medals. Now there are 25 Jameses running amok!

When a creepy sleep-peeping Lemongrab upsets Princess Bubblegum with his creepy ways, Finn and Jake need to tend to some issues in the Outer Realm.

Peppermint Butler thinks that Bubblegum is working too hard in her lab, so he tries to get her a suitor.