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  1. 2

    Finntress week 2026 by

    Fandoms: Adventure Time (Cartoon 2010), Adventure Time: Fionna and Cake (Cartoon 2023)  

    21 Feb 2026

    Tags
    Summary

    A series of Finntress one-shots with prompts:

    -15: Family
    -16: Memory
    -17: Blood
    -18:Cold
    -19:Patience
    -20:Meat
    -21: Valentines

    I'm behind on this, but it's because I saw that no one else was doing it, and I figured it would be my turn. I hope you enjoy it.

    #finntressweek 💚🩵

    Language:
    English
    Words:
    4,902
    Chapters:
    7/7
    Comments:
    6
    Kudos:
    54
    Bookmarks:
    2
    Hits:
    1,014

  2. 17

    Sugar, Spice, and Ice by

    Fandoms: Adventure Time  

    28 Jun 2021

    Tags
    Summary

    Farmworld AU where Finn freezes the bomb and lich-Jake, but still has to deal with the crown. Bonnie has to deal with being pursued by the King of Farmworld and her own untrustworthy family. As they're forced to work together, will something else happen between them?

    Canon-divergent from about halfway through S5E1 "Finn the Human", but contains elements of later canon (elemental powers, gum family, etc.)

    Language:
    English
    Words:
    15,734
    Chapters:
    7/?
    Comments:
    25
    Kudos:
    141
    Bookmarks:
    17
    Hits:
    3,210

  3. *

    Blank Slate by

    Fandoms: Adventure Time  

    26 Oct 2023

    Tags
    Summary

    As night had settled over the Candy Kingdom, a crowd of chattering and whispering candy people had gathered around the bookshop, an unusual sight with it being so late.

    They spoke of a monster. One with eyes made of glass, red frills on its neck and a face covered in blood. It had last been seen entering the building.

    Finn thought he was ready for anything when he entered the shop, but the last thing he expected to come face to face with was an injured human.

    Series
    Language:
    English
    Words:
    5,711
    Chapters:
    3/?
    Comments:
    93
    Kudos:
    956
    Bookmarks:
    163
    Hits:
    11,672

  4. *

    Freaking Out by

    Fandoms: Adventure Time (Cartoon 2010), Adventure Time: Fionna and Cake (Cartoon 2023)  

    24 Oct 2023

    Tags
    Summary

    Marceline freaked out when Simon went missing, and freaked out when she found him again, and freaked out when she found out what he planned to do.

    Language:
    English
    Words:
    6,196
    Chapters:
    3/3
    Comments:
    56
    Kudos:
    643
    Bookmarks:
    104
    Hits:
    9,035

  5. 2

    Vinaigrette Fictober by

    Fandoms: Adventure Time  

    26 Oct 2022

    Tags
    Summary

    COME GET YALL JUICE

    I’m doing it y’all, I wanted more content for my OTP so I’m gonna put myself through this. Y’all. Pray for me.

    For the prompts, I’m following fictober-event on Tumblr. I don’t have a Tumblr, so I can’t post this there, but I am following those prompts

    Language:
    English
    Words:
    14,966
    Chapters:
    22/31
    Comments:
    2
    Kudos:
    38
    Bookmarks:
    2
    Hits:
    787

  6. 42

    Had I Listened by

    Fandoms: Adventure Time: Fionna and Cake (Cartoon 2023), Adventure Time (Cartoon 2010)  

    07 Feb 2024

    Tags
    Summary

    An alternate universe in which during episode 2 of Fionna and Cake Season 1, Marceline notices that something is wrong with Simon during their phone call.
    Writing Contest Winner! Fanart of scenes included at the bottom alongside credits!

    Language:
    English
    Words:
    5,004
    Chapters:
    1/1
    Collections:
    1
    Comments:
    12
    Kudos:
    179
    Bookmarks:
    42
    Hits:
    2,793

  7. 8

    Finn x Reader by

    Fandoms: Adventure Time  

    27 Jun 2024

    Tags
    Summary

    Princess Bubblegum, Finn, and Jake meet the Minotaur Prime. They're a strong leader in the minotaur tribe. They become friends with the Prime and start to learn more about the Minotaurs and their history. The Prime also accompanies the duo on many adventures. Though, Finn's feelings start to go a little wonky as he's trying to find out how exactly he feels about the Prime. Does he want a friendship or something more? What will happen between these two blokes? Will they ever confess their love to one another? Who knows.

    Language:
    English
    Words:
    58,882
    Chapters:
    33/?
    Comments:
    5
    Kudos:
    80
    Bookmarks:
    8
    Hits:
    3,223

  8. *

    Winter King by

    Fandoms: Adventure Time (Cartoon 2010), Adventure Time: Fionna and Cake (Cartoon 2023)  

    17 Apr 2025

    Tags
    Summary

    When the Ice King decided make a trip to Wizard City, he expected there to be a brawl — rare were times when such visits went without one. What he did NOT expect, however, was that, as a result of this brawl, his sanity would suddenly return to him.

    Simon Petrikov has returned, and he possessed the power of the Crown, the land of ice and penguins, as well as a reputation as a princess kidnapper and just an unpleasant person. Oh, and the surrounding world has changed beyond recognition, now inhabited by monsters, wizards, and who knows what else.

    Has he truly regained his sanity?

    This is a translation of my own work. Link to the original: here

     

    Cover

    Language:
    English
    Words:
    145,413
    Chapters:
    27/?
    Comments:
    329
    Kudos:
    1,481
    Bookmarks:
    176
    Hits:
    63,063

  9. *

    C's Get Degrees by

    Fandoms: Adventure Time  

    26 Feb 2018

    Tags
    Summary

    Bonnie has just started her first year of University, and finds she has a mostly neutral-verging-on-hesitantly-positive opinion of her new roommate, Marceline.

    Language:
    English
    Words:
    102,550
    Chapters:
    45/45
    Comments:
    493
    Kudos:
    3,271
    Bookmarks:
    388
    Hits:
    82,937

  10. 15

    Requiem for escapism by

    Fandoms: Adventure Time (Cartoon 2010), Adventure Time: Fionna and Cake (Cartoon 2023)  

    21 Dec 2023

    Tags
    Summary

    Months after Fionna's world became canon, the girl is doing ok, at least until she has an accident; and from there things just become worse and worse; especially when Prismo tasks her, Cake and Simon whit a new mission.

    (I will update the tags as I add chapters, so give a look to them!)

    Also it official! New chapters every Thursday!

    Language:
    English
    Words:
    14,124
    Chapters:
    9/9
    Comments:
    50
    Kudos:
    99
    Bookmarks:
    15
    Hits:
    3,275

  11. 54

    magic madness sadness (snow) by

    Fandoms: Adventure Time (Cartoon 2010), Adventure Time: Fionna and Cake (Cartoon 2023)  

    06 Nov 2023

    Tags
    Summary

    Betty is the one who puts on the crown, not Simon.

    Language:
    English
    Words:
    3,307
    Chapters:
    2/?
    Comments:
    22
    Kudos:
    284
    Bookmarks:
    54
    Hits:
    3,064

  12. 42

    Family by

    Fandoms: Adventure Time (Cartoon 2010), Dexter's Laboratory, Code Lyoko, Regular Show (Cartoon), The Powerpuff Girls (Cartoon 1998-2005), Courage the Cowardly Dog, Atomic Betty, Megas XLR, Steven Universe (Cartoon), Grim Adventures of Billy & Mandy, Evil Con Carne, Paper Mario Series (Video Games), Young Justice (Cartoon), Avatar: The Last Airbender, El Tigre: The Adventures of Manny Rivera, Fullmetal Alchemist (Anime 2003), Wander Over Yonder (Cartoon), Over the Garden Wall (Cartoon & Comics), Grim Tales comic, Invader Zim, Grime Tales comic, Powerpuff Girls Doujinshi comic, Danganronpa, Codename : Kids Next Door, Samurai Jack (Cartoon ), Sym- Bionic Titan, The House of the Dead (Video Games), Teen Titans, Ferngully, Gravity Falls  

    29 Mar 2026

    Tags
    Summary

    Simon gets the power of the crown, but he doesn't lose his sanity or Betty. The war happens and Simon and Betty find Marceline and raise her as their own. The new family face many difficult challenges. A story in which a hero will rise and help defeat a great evil in the distant future. A different Ooo will rise and take shape. Also there will be many crossovers.

    Language:
    English
    Words:
    472,513
    Chapters:
    151/?
    Comments:
    118
    Kudos:
    312
    Bookmarks:
    42
    Hits:
    13,564

  13. 94

    overthinking again by

    Fandoms: Adventure Time: Fionna and Cake (Cartoon 2023), Adventure Time (Cartoon 2010)  

    02 Nov 2023

    Tags
    Summary

    How two colleagues, Scarab and Prismo, fall into each other's orbit.

    Series
    Language:
    English
    Words:
    23,207
    Chapters:
    10/?
    Comments:
    196
    Kudos:
    929
    Bookmarks:
    94
    Hits:
    16,669

  14. 58

    Ice Marcy’s new life (on hold sorry) by Anonymous

    Fandoms: Adventure Time (Cartoon 2010), Adventure Time: Fionna and Cake (Cartoon 2023)  

    21 Aug 2024

    Tags
    Summary

    A WHAT IF:
    Winter king didn’t die right away
    Ice Marcy can’t melt if he dies and she is her own being now.

    Let’s see where this goes!

    Series
    Language:
    English
    Words:
    58,892
    Chapters:
    127/?
    Collections:
    1
    Comments:
    1,734
    Kudos:
    640
    Bookmarks:
    58
    Hits:
    27,272

  15. 67

    Maybe a monster by

    Fandoms: Adventure Time (Cartoon 2010), Adventure Time: Fionna and Cake (Cartoon 2023)  

    30 Jan 2024

    Tags
    Summary

    In an alternate universe where Simon Petrikov turned into a vampire before the mushroom war, things swiftly turn bad. Even Betty had limits, but she did her best to help him.

    As the end of the world approaches, Simon is now caring for young Marceline.

    Series
    Language:
    English
    Words:
    40,349
    Chapters:
    17/?
    Comments:
    277
    Kudos:
    410
    Bookmarks:
    67
    Hits:
    9,536

  16. 12

    You Were Everything Before You Were Nothing by

    Fandoms: Adventure Time (Cartoon 2010), Adventure Time: Fionna and Cake (Cartoon 2023)  

    10 Jul 2024

    Tags
    Summary

    After another day's worth of research brought up an astounding amount of nothing, Simon Petrikov can't help but feel as if his life is slipping away, dead end after dead end. And then, a ghost. The antiquarian, not the type to believe in superstition, can't help but feel that maybe all of his vain work is causing him to fall off the deep end, but as the ghost reappears time and again, he begins to believe that might not be the case...

    A thousand questions fester within Simon, and unhelpfully, none of which the ghost answers. But as time goes on, he realizes just how much he missed, both regarding his research and his life. As life comes hurling at him and the ghost at a breakneck pace, answers start to flow naturally alongside it. And some time down the line, Simon Petrikov aims to return the favor.

    //

    Or, Simon and Betty have an even more complicated past where Simon is on the verge of a mental breakdown and Betty is, decidedly, a ghost, hellbent on fixing Simon's atrocious lifestyle.

    Language:
    English
    Words:
    41,982
    Chapters:
    8/12
    Comments:
    29
    Kudos:
    96
    Bookmarks:
    12
    Hits:
    2,133

  17. 15

    Simon did board the bus by

    Fandoms: Adventure Time: Fionna and Cake (Cartoon 2023), Adventure Time (Cartoon 2010)  

    11 Oct 2023

    Tags
    Summary

    What if Simon boarded the bus with Betty, all those years ago? What if it did happen this way?

    Language:
    English
    Words:
    4,301
    Chapters:
    3/?
    Comments:
    4
    Kudos:
    95
    Bookmarks:
    15
    Hits:
    1,319

  18. 87

    Part of the Madness by

    Fandoms: Adventure Time (Cartoon 2010), Adventure Time: Fionna and Cake (Cartoon 2023)  

    02 Nov 2023

    Tags
    Summary

    Simon's home, and he has a lot of recovery to do and a lot of learning how to value himself, meanwhile a mystery centering Simon is taking root.

    Series
    Language:
    English
    Words:
    26,107
    Chapters:
    8/?
    Comments:
    168
    Kudos:
    541
    Bookmarks:
    87
    Hits:
    11,535

  19. *

    Cyclical by

    Fandoms: Adventure Time: Fionna and Cake (Cartoon 2023), Adventure Time (Cartoon 2010)  

    29 Dec 2023

    Tags
    Summary

    Simon doesn’t hesitate with the crown when Fionna calls to tell him that the Scarab is terrorizing her world. Before she can protest, he puts it on.

    Language:
    English
    Words:
    133,154
    Chapters:
    52/52
    Comments:
    531
    Kudos:
    1,437
    Bookmarks:
    161
    Hits:
    44,070

  20. 6

    Everything in its right place. by

    Fandoms: Adventure Time (Cartoon 2010)  

    10 Oct 2023

    Tags
    Summary

    My au where Simon and Betty are actually happy and adopt Marceline!! Wowza!!!

    Language:
    English
    Words:
    3,066
    Chapters:
    3/?
    Comments:
    21
    Kudos:
    49
    Bookmarks:
    6
    Hits:
    758

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