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This jam is now over. It ran from 2025-12-01 09:00:00 to 2026-01-02 07:59:00. View 37 entries

Join us during the month of December to make something- anything- using Decker, the multimedia sketchpad that's also a program for your computer!

Will you:

  • Make a visual novel?
  • Write a poem?
  • Create a digital activity placemat?
  • Write a utility that makes your life easier or more delightful?
  • Compose a Zine about a topic you love?
  • Build something new and wonderful?

The possibilities are limitless!

Be sure to check out previous Decker jams for inspiration!

Rules:

  • Submissions must be made using Decker, and provided as a web-playable HTML export. Sometimes web-decker is a bit slower than native-decker; don't wait until the last minute to test in a browser!
  • Submissions should be original work. Dusting off an old unfinished project is OK; we run on the honor system here.
  • Submissions must not make use of so-called "generative AI" tools such as image models or large language models.
  • Making use of pre-existing Public Domain or Creative Commons assets is fine, as is using materials shared on the Decker community forum and materials distributed with Decker itself.
  • Feel free to collaborate in teams, submit multiple decks, or both.
  • Including or referencing chickens is completely optional, but always appreciated.

Resources:

Submissions(34)

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Browser playable (34)

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Notes from a Media Detritivore
Interactive Fiction
Play in browser
Make dithered brushes for drawing in Decker.
Run in browser
a wounded knight has an out of body experience
a Decker creature+nature zine filled with colorful critter sketches
Play in browser
telling everybnuy about the human weapons in my neighborhood
Interactive Fiction
Play in browser
drawings about a painter with scoliosis
Visual Novel
Play in browser
start anew (with Nulla)
Interactive Fiction
Play in browser
A Decker FMVenture
Adventure
Play in browser
Extra melty-looking card transitions for your Decker project.
Screensaver or Torture Chamber?
Educational
Play in browser
Play in browser
hand of slides
Play in browser
You find a door.
Play in browser
learn about body parts with the help of a small gingerbread guy.
Play in browser
my own private project x
Visual Novel
Play in browser
Create something of yourself.
Interactive Fiction
Play in browser
reflections and refractions
Play in browser
A multimedia poetry journal
Run in browser
an interactive slideshow presentation
Run in browser
3D in Decker (kind of)
Educational
Play in browser
An illustrated short story
será que você consegue resgatar a história perdida da "locomotiva do país"?
Adventure
Play in browser
Photos from a bike trip in South Holland, December 2025
Run in browser
Let the poison out with this winter activity book about snow!
Interactive Fiction
Play in browser
EXCEPT FOR YOU
Visual Novel
Play in browser
pov you're a hardcore fan turned paparazzi
Interactive Fiction
Play in browser
AMOK-KOMA-OAKM
Interactive Fiction
Play in browser
Adventure
Play in browser
data flow for your computer
Educational
Play in browser
Project Euler 1-5 done in Decker and Lil Scripting Language
Play in browser
Poor utility to bookmark youtube videos
Run in browser
Take the quiz to find your destined ducksona. Do it
Play in browser
A game about yu catch a something, i don't know english. that's it.
Interactive Fiction
Play in browser