1 - 20 of 35 Works in Neptr (Adventure Time)
Navigation
Listing Works
-
Sleepwalker by Anonymous
Fandoms: Adventure Time (Cartoon 2010), Adventure Time: Fionna and Cake (Cartoon 2023)
08 Sep 2025
Tags
Summary
An AT au my friend made where the universe turns normal (like Fionna and cake), but Prismo has dreams about when it was magical and he’s not happy about it.
•
Disclaimer: This fanfic deals with mental illness/disorders and hallucinations. Despite how much I've researched for this fanfic, I am not an expert on this subject and this shouldn't be treated as a reliable source/example on how people with mental illness/disorders experience the world. -
Tags
Summary
Ordered by the Big Boss, Prismo gathers a large assortment of folks across Ooo to react to a universe where Finn Mertens lived a normal suburban cushy live and is transported to an alternate Ooo where the adult 21-year-old Finn must survive in a bizarre and alien world; an Ooo that never had a Finn and never met Jake.
(Adventure Time characters react to an alternate universe Ooo where things are different)
-
Tags
Summary
Plans change. One slump up sends Finn and Jake on an Adventure they never could've expected in a land of kingdoms and order beneath the light of a broken moon. Still, the fun will never end.
-
The One True Adventure Time: Life by Just_the_Avocado
Fandoms: Adventure Time (Cartoon 2010)
02 Oct 2024
Tags
Summary
Okay, Finn is 18, he has moved out and is living on his own, still goes on adventures ya'know, helps people out, has more responsibilities. Things are different. But he's learning. He also feels alone, and now his thoughts and overly enthusiastic about working out Melon Heart makes him feel uneasy, but he's learning to find a new way to live this life.
But something else is here to wreak havoc.
Silent chaos.
(So I know I'm like 6 years to late for this but... Well a friend only introduced me to the show this year and I love it. So back off. Anyways this originated as just a Love story of Finntress because they are my favorite ship but it's grown beyond that, hope you enjoy, know that I might not continue it) ;)
-
Tags
Summary
This story is not for kids or minors: TWs are: PTSD, CPTSD, BD and maybe BPD and sh and suicide, dissociation and derealisation and mental breakdowns What if the events of Season 6 Episode 21" "Dentist" went differently, what if something more scary happened than Tiffany falling down and showing to survive in "Preboot" What if things went a different route and changed the story?
-
fern merten's guide to making new friends out of old ones by hellotoodlesxo
Fandoms: Adventure Time
28 Jul 2024
Tags
Summary
“Was that nice?”
“Hm?”
“Being friends.” he clarified. His voice was a little shaky, but he told himself it wasn’t. What was he if he was afraid of a pathetic lemon candy? Cowardly.
-
Adventure Time: Across the AuraVerse by Atomsk_the_Pirate_King, Twilight_Master_Emerald
Fandoms: Adventure Time (Cartoon 2010), Sonic the Hedgehog - All Media Types
19 Jun 2024
Tags
Summary
After losing Flame Princess and some respect from others, Finn, with the help of Jake's advice, went on vacation to clear his head but what he will face will be epic. New co-op by TME and I, harem as usual. No Flames. Constructive criticism is welcome.
-
Tags
Summary
The Gum War had come to an end and Ooo was once again at peace. As people rebuild and friends return to their lives, roughly a year had flown by since Finn had been keeping himself busy with adventuring. Ooo's beloved hero continues to try and live his life as a "normal" human, but unfortunately for Finn, being the incarnation of a cosmic entity accompanied by the return of an old and dreaded enemy complicates things. Join Finn and his friends on another wild, emotional, and action packed adventure that will take them to new places within Ooo and beyond!
P.S. I originally posted this story on Fanfiction.Net, but am also posting it on AO3 now. Currently, the AO3 version is further revised.
-
HOSTS: An Adventure Time fanfic by Voidofthevoidmv
Fandoms: Adventure Time (Cartoon 2010), Adventure Time: Fionna and Cake (Cartoon 2023)
04 Mar 2024
Tags
Summary
"It all begins with a wish" Basically, in another universe where Fern actually prevents Sweet Pea from going to the Well of Power- Meaning he isn't there to stop the Lich from killing Finn. But the thing is, The Lich decides to possess Finn and use his reputation and trustworthyness in his favor. From the perspective of rising hero Fern ( Because I love him-) Watch as the story unravels from there, and it's up to him to save the multiverse. He makes and remakes a lot of friends along the way. But this story will not end without spilled blood... This is: Hosts. (Terrible description- Just know Finn dies and a bunch other characters die. BUT FERN AND NEPTR FREIENDSHIP FOR LIFE!!!)
-
Tags
Summary
Immediately taking place after The Gum War from the final episode of Adventure Time in "Come Along With Me".
Here we start the next chapters in the lives of the great heroes of Ooo, Finn the Human and Jake the Dog, continuing in the world of Ooo in this new interpretation of a season 11.
Where will all the lives of the characters in Ooo lead? Well let us figure that out together.
Expect character growth, world building, romance, drama, action and a hidden over arching conflict(s?) that will all be revealed in due time.
It's Adventure Time!
-
Tags
Summary
After continued disasters, Princess Bubblegum has decided that enough is enough. Ooo needs to change, her proposal, unite all of the Kingdoms of Ooo under one flag, under her command. A united Ooo that will not allow any more crime to spread around.
This idea divides Ooo in half. One side (lead by Bubblegum) accepts it and wants to be unified, while an other (lead by Flame Princess) wants to keep Ooo as independent kingdoms afraid of what Ooo would turn out under Bubblegum's rule.
Sides are chosen, relationships are reforged, while others are destroyed, as all peacefull solutions fail, there is only one way to settle the fate of Ooo..
War....
Series
- Part 5 of Between Demons and Stars
-
Fallen by hxney_lemcn
Fandoms: Adventure Time (Cartoon 2010), Adventure Time: Fionna and Cake (Cartoon 2023)
08 Oct 2023
Tags
Summary
Reader's sacrifice is for nothing, and now they are trapped in a world that doesn't seem to want them...or maybe someone doesn't mind as much as they let on.
-
Todo es lo que debe ser. Pero sabes que debes hacerlo bien. by Sweet12
Fandoms: Adventure Time: Fionna and Cake (Cartoon 2023), Adventure Time (Cartoon 2010)
03 Oct 2023
Tags
Summary
Diferente realidades y diferentes acciones. Todo conduce al pequeño diente de león que renace una y otra vez.
Simón.
Ese es el nombre del diente de león. Que vuelve y se va. Como un dulce recuerdo.
Series
- Part 10 of Reflexionó de los personajes. Simón y todos.
-
bouquets that (won't ever compare to you) by wafflesi (orphan_account)
Fandoms: Adventure Time (Cartoon 2010), Adventure Time: Fionna and Cake (Cartoon 2023)
01 Oct 2023
Tags
Summary
— ficlets in non-chronological order of farmworld!finn (because let's be fr he's fine as hell in that universe).
Series
- Part 4 of drabbles
-
Scavenger by hxney_lemcn
Fandoms: Adventure Time: Fionna and Cake (Cartoon 2023), Adventure Time (Cartoon 2010)
30 Sep 2023
Tags
Summary
After Finn saved their life, reader becomes a family friend of the Mertens. What happens when the family becomes too accustomed to their presence?
-
Curiosidades by Sweet12
Fandoms: Adventure Time, Adventure Time: Fionna and Cake (Cartoon 2023)
25 Sep 2023
Tags
Summary
Simon y todos. Datos de lo que recuerdo de mi niñes.
Ahora soy adulto y jode. No quiero tener veinte. :(
-
Simon & BMO by CreakyCritter
Fandoms: Adventure Time, Adventure Time: Fionna and Cake (Cartoon 2023)
17 Sep 2023
Tags
Summary
After a month of being himself again, Simon gets a visit from BMO and they explore another business venture together: Shares!
-
Tags
Summary
A water nymph and a fire boy? It was obvious that that wasn't going to work. A water nymph and a grass boy, in the other hand...
-
Tags
Summary
Marcy and Bonnie mourn the deaths of their favorite humans, decades apart.
-
Tags
Summary
After Bonnibel sees Marceline perform on stage for the first time since they broke up, they're faced with a decision - they could go to an after party in the Slime Kingdom surrounded by all of their friends, or they could ditch everyone without saying a word and be alone together.
The choice is obvious.
Series
- Part 4 of Extreme Bubbline Angst