"Did you know that you can fit ~40 standard sized playing cards, five dice, and a rules sheet printed on the back of a J-card inside a cassette case without posts? Do something with this knowledge."
Elizabeth Little, Shrike Studio founder, lead writer/designer, Bsky post: https://shorturl.at/OmIS0

Let's do something with this knowledge, then.

                                                                                                                                                                                                  
WHAT IS THE CASSETTE CASE GAME JAM?
This is a jam is about making TTRPG stuff that fits in a cassette case box.
The idea is not new:

• Zine Cassettes (Zettes) are game collections on a USB, packaged in tape cases (e.g. Indiepocalypse series, by Pizza Pranks).
• Some music labels publish tapes with adventures on the cover (e.g. Heimat Der Katastrophe).
• Dungeon Synths are very popular (e.g. Witch Bolt).
• Some TTRPG designers dabble in making specialized music for their projects. 

But there aren't that many physical TTRPGs to utilize this format.
Which is weird, because it's a really fun design challenge, it's peak nostalgia, and the niche is almost empty (out of 50k physical games on Itch, there are probably 5 that fit the bill).
So, this is an open invitation to create something new and interesting with it.

                                                                                                                                                                                                 
WHAT CAN I SUBMIT?

Anything related to the general idea of a "game in a cassette case".
It can be a full game, an adventure, a tool, a box for a solo-rpg, a mini DM kit, some cool art, or just a session playlist.
Choose and make at least one:

• SIDE A, Adventure. A new project, or old work repurposed for a new format. A standalone thing that can be played as-is.
• SIDE B, Bits and Bobs. Assets, props, hacks, tools, etc. A broader umbrella goal, but the final result can be of lighter scope. 

You can use any existing SRD and licensed art with proper credit.
You may charge for your work, or make it free, it's up to you.

                                                                                                                                                                                                 
JAM DETAILS
Start date: 1st of July.
End date: 30th of September.
Genre: Any. Fantasy, Sci-Fi, Lo-Fi, whatever floats your boat. 
Is it Ranked? Absolutely not. Have mercy.
No AI-generated content of any sort. Make it yourself.
No hateful, bigoted, and/or discriminatory language.

If you can, use second-hand cassette cases, no need to multiply plastic.
Post screenshots. Show off your work. Inspire others.

                                                                                                                                                                                                 
RESOURCES
This will be a growing list of resources and templates.

J-CARD COVER TEMPLATES
Cassette Cover Templates
Cassette Templates, PSD format
Mellific's Cassette-Sized Accordion Zine Template
Xenofossil's Zette Template

DESIGN TOOLS
Photopea
Canva

ART
Yochai Gal's Public Domain Art Trove
Goblin Archive's Commercially Licensed Art Trove
Goblin Archive's Public Domain Art Trove
Unsplash
Pexels
Pixabay
Art Resource Database

ITCH
The Itch Game Page Image Guide & Templates
Itch.io Page Launch Checklist
Canva Itch Image Templates

SRDs and Systems (apologies if I butcher the descriptions).
Breathless Creator Kit - an SRD for making survival horror role-playing games, and MUCH more.
Caltrop Core - extremely simple and bare bones system, so anyone can make a game with it.
Carta - a basic set of rules that you can use as a framework to build a solo TTRPG centered around discovery.
Crafted in a Shell - an SRD about personal growth obtained on a character-driven journey.
Four Points - a setting neutral table-top RPG system, which focuses on player agency, narrative, and customization.
Hints and Hijinks - a purpose-built solo mystery system that puts the power of deduction in the hands of the player.
LUMEN - an RPG system for action packed, power fantasy games.
MAUSRITTER - play as brave mice in a dangerous world.
Passkey - a system used to create cooperative, solo and guided table-top role-playing games , for any genre or setting.
Primal Quest - a streamlined set of rules for weird stone & sorcery adventures in a mythical world.
Songs & Sagas -  a condensed OSR inspired tabletop role-playing game of axes, runes, spirits and legends.
Wretched & Alone - a system for solo journaling games about struggling in the face of insurmountable odds.

                                                                                                                                                                                               
INSPIRATION AND EXAMPLES

GAMES
BrianTransplant's Crustpunk Dungeons
BrianTransplant's No Comply
Isle In The Heavens' MXTP
Awkward Turtle's Electric Wizards

FROM BSKY
Inkus Alter's Vekari PC sheets
Vulpinoid's Fubar Fever pre-gens

MUSIC
Dungeon Synth, Witch Bolt
Heimat Der Katastrophe's KOBOLD
Exalted Funeral's Candle IThe Black Keep

OTHER
Polygon article, Switch 2 Cassette Covers

                                                                                                                                                                                            
CREDITS
Banner and cover image made with Canva assets.
Background photo: https://heimatderkatastrophe.bandcamp.com/merch

Ping (@axiomdelver.bsky.social) on Bsky for promotion, deadline extension, concerns, etc.