This jam is now over. It ran from 2024-12-06 05:00:03 to 2025-04-02 03:59:00. View 49 entries

THERE ARE TWO RULES OF COOL GAME DESIGN: FUCK UP THE MOON, AND PUT A LABRYINTH UNDER THE CASTLE.

I could play games with nasty, messed-up lunar bodies and mazes all day every day. I bet you could, too. Let's try. I double dog-dare you to try, actually. Before we can start, we're gonna need some games. 

We're gonna have to make some games.

RULES (THERE ARE SLIGHTLY MORE THAN TWO RULES)

  1. FUCK UP THE MOON
    1. Are there two, three, four moons? Is there no moon at all? Is there something strange on it? Hiding behind it? Is the moon about to collide with something else? Is the moon a cold and uncaring god who hates us and wishes we were never born? Honestly, I can't wait to find out. Mess it up profoundly, though. Go big or go home.
  2. PUT A LABYRINTH UNDER THE CASTLE
    1. No one has ever regretted building a labyrinth under their castle, right? Right?? 
    2. "Castle" is a subjective term. Get as weird about this one as you want.
  3. AI IMAGES AND TEXT ARE ABSOLUTELY PROHIBITED
    1. Please be careful if you choose to use stock images, even paid stock. Some unscrupulous folks don't tag AI content, which sucks.
    2. Looking for art? Tired of filtering through public domain resources? Ask me nicely! I'll be taking requests and making a free art pack for this jam to say thanks for participating. 
  4. NO VIDEO GAMES
    1. This jam is for physical games only. If your downloads don't contain a PDF or RTF this jam is probably not for you.
    2. Classic TTRPGs, modules for existing systems, keyed maps, journaling games, etc, are all welcome.


WHERE TO START:

Check out this handy Resource List & Design Guide

Looking for our discord? I don’t have one! Come hang out in Hinokodo’s ATOPIA, all  the cool kids are there: https://discord.gg/WGkuE3zSyz

You might also want to check out this collection of System Reference Documents.

Submissions(48)

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a solo journaling game about casting a ritual on the cursed blood moon
A warring game of entwined gods and the aspects of self and power shared between them
A small Zungeon for Black Sword Hack
A Second Guess System mystery in the local events section of the newspaper.
tricktaking labyrinth escape based on Hearts
a lovers' quarrel for his majesty the worm
An evidence board making game
You are literally the last person on Earth.
A SOLO GAME OF HUNGER & TRANSFORMATION
solo journaling game
A Wormy Underwater Sci-Fi Horror Adventure
A solo game about facing the past.
A one-shot run for Slugblaster in The Golden Jungle - at night!
A Level 1 Sisters of Moonlight Remembered Adventure for Simple DeeEnDee
Rivals writing letters.
A Story Game of Spellcraft, Destruction, and the Power of Language
Twenty Portals, A Moon, and a Desert
A TTRPG of Made up Science
A game about the Moon-device.
A Roleplaying Game of Chariots and Chosen Ones
Role Playing
The Worm King's Eye opens in the heavens. It's the end of the world. WORK IN PROGRESS
A journalling game about finding yourself stuck underneath a baseball stadium with a repeated mysterious visitor.
A Vibes Miscellany for the upcoming game Where the Moonflowers Bloom
Solo TTRPG and tarot cards game
A horror-themed greek monster-and-maze setting for the game Dialect
A "moon base with terrifying threats" building tool for storytelling and RPGs.
Meet Lord Moon in the labyrinth beneath his Pleasure Palace to provide him some exotic entertainments.
Fun in an undersea slum
A hack of 'Inevitable' and 'Frontier Scum'
Will you die in the void of space or make it back to earth?
Ghosts? On the moon? Not on your watch.
A solo TTRPG card game
Deadly horror TTRPG within a labyrinth of shifting flesh. Force the moon to devour itself.
Be a werebeast. Take on an evil corporation of werewolves. Blow up the moon. An RPG for 2-5 people.
Adventure
A game for 2-7 players that uses a poem and a song to explore a mysterious labyrinth and the moon
There is an uprising in a prison on the moon. System agnostic setting and faction booklet, but geared for Mosaic Matrix
A Below the Bad Moon Jam game
Card Game
and you have a destiny to fulfil
Steal Liquid OXygen from corpos and live long enough to use it
The Moon has crashed down to earth | A Labyrinth of Rock rests in it’s Crater | Hiding the Castle of God.
A solo, metroidvania TTRPG