Adventure Time fanfiction generator
An Adventure Time story generator writes Ooo's adults — a vampire queen, a candy monarch, and a thousand years of history between them.
Adventure Time's adult cast carries the show's real weight: two immortals who have known each other since before the current world existed, a post-apocalyptic setting nobody discusses, and a break-up that lasted centuries. SecretPen writes Marceline and Bubblegum's timescale, which is the best material in the canon.
Three ways to get a adventure time story
| Story sites | General AI | SecretPen | |
|---|---|---|---|
| Written for you | Browse only | Sometimes | Always |
| Refuses this kink | — | Often | Never |
| Explicit, no fade | Varies | Rarely | Always |
| Nothing is published | Public archive | Logged | Private |
Three openings to steal
Click one and it lands in the desk, already typed. Change any word you like — it's a starting line, not a script.
A hundred years of not speaking
We fell out over something that would take an hour to explain and neither of us has been in the same room since, and she has just walked into this one.
Open in the desk →
Before all this
She remembers the world that came before and almost nobody else does, and tonight she describes a specific afternoon from a thousand years ago that has nothing to do with the war.
Open in the desk →
The same argument
We have had it in four different centuries and tonight one of us uses a phrase from the first version, and both of us hear it.
Open in the desk →
What makes Adventure Time land
- A thousand years of history. Every argument is an old argument.
- Ooo is post-apocalyptic and nobody talks about it. That undertow matters.
- Immortality means the falling-out lasted a century and neither apologised.
How far it goes
Ooo and its kingdoms, the Candy Kingdom and the Nightosphere, Marceline and Bubblegum's shared history, the pre-Mushroom-War past, and the Distant Lands era. Ships across Bubbline, adult pairings, rare pairs and x-reader as an adult resident of Ooo. Tropes including immortal timescales, centuries-long estrangement, post-apocalyptic undertow, and second chances after a very long time. Every character is written as an adult; the show's child characters are not written.
How it works
01
Say it in one line
One sentence is enough. Who's in the room, and what has already been decided between them.
02
Set the dial
Tone, heat, point of view, length. Or skip it — the defaults are tuned for people who'd rather just read.
03
Keep going
Chapter one arrives in seconds. Steer the next one, change your mind, or let it run.
Nobody else reads this.
SecretPen has no public feed, no community rankings, and no way for one reader to see another's stories. Whatever you write here stays in your account — that's the whole point of the name.
Start writing →Questions
- Which characters are written?
- The adult cast — Marceline, Bubblegum and the other adult residents. The show's child characters are not written in any framing.
- Does the immortality feature?
- Yes, and it's the point. A relationship measured in centuries argues, forgives and forgets differently from a human one.
- Is any of this public?
- No. SecretPen has no public feed, no community rankings and no sharing — there is no mechanism by which one reader can see another reader's stories. Everything you write stays in your account.
- How explicit does it get?
- As explicit as you ask for. There is no fade to black and no lecture. The only limits are the hard lines in our content guidelines: everyone is an adult, nobody real, nothing illegal.
- Do I have to pay to try it?
- No. You can write your first story free. Paid plans exist for people who write a lot of them.
Close to this
Or see every fandom we write.
Every character SecretPen writes is a consenting adult. See our content guidelines for the lines that never move.