This jam is now over. It ran from 2025-11-11 15:00:00 to 2025-12-12 05:00:00. View 61 entries

🐭 Mausritter Month Companion Jam 🐭

November 11 – December 11, 2025 

🧀 Welcome, Brave Little Creators! 🧀

This jam is the official companion to Mausritter Month (Nov 4 – Dec 4) — the community-wide celebration of all things sword-and-whiskers!

If you submitted to the BackerKit Mausritter Month event and didn’t get chosen — this jam is for you. 
 If you’re just discovering Mausritter and want to make something small, weird, cozy, grim, or glorious — this jam is for you. 
 If you just love mice with swords — well, this jam is definitely for you.

No theme. No competition. No prizes. Just pure fun, creative freedom, and community celebration!

What Is Mausritter Month?

Mausritter Month is a global collaboration between Losing Games, Games Omnivorous, Exalted Funeral, and an ever-growing community of third-party creators. It runs Nov 4 – Dec 4 2025, featuring new official projects, community spotlights, and the return of the Mausritter Core Box Set and The Estate Collection.

You can learn more and see the official releases (including JUNK CITY, the anchor project by Isaac Williams & André Novoa) through the Mausritter Month hub on BackerKit.

Official event page: Mausritter Month on Backerkit


This Companion Jam runs Nov 11 – Dec 11 2025 — one week later — to give every mouse, mole, shrew, and frog in the community a chance to share their own creations!

Archive of previous jams: Mausritter-related jams on itch.io

What Can I Submit?

Anything Mausritter-related! Adventures, settlements, bestiaries, spells, hacks, mini-games, random tables, poems, soundtracks — whatever you dream up!

If it celebrates Mausritter and respects the third-party license, it’s welcome here.

  • Adventure Sites or Regions
  • Bestiaries, Factions, or NPCs
  • Spells, Items, or Magical Treasures
  • Zines, Comics, or Illustrated Stories
  • Soundtracks or Play Aids
  • Hacks or Mini-Rulesets
  • Tools and Generators

No minimum or maximum size. Submit one project or a dozen — there’s no limit to your creativity.

Submission Requirements

  • Your work must be original and first released during the jam (Nov 11 – Dec 11 2025).
  • All content must comply with the Mausritter Third-Party License.
  • You may sell your work — and you’re encouraged to! But please consider adding community copies.
  • No AI-generated art or text.
  • Be kind, inclusive, and creative. Any submission promoting hate speech, discrimination, or plagiarism will be removed.

🧰 Resources for Creators 🧰

Templates & Tools

Community Spaces

❓ FAQ ❓

Can I submit something I’ve already made? Yes, but we’d prefer new things – this is a chance to grow and expand the community.

Can I collaborate with others? Absolutely! Team projects are encouraged.

Do I have to sell my work? Nope — free, PWYW, or paid are all welcome.

What languages are accepted? All! Mausritter is a global community — multilingual projects are wonderful.

Do I need to use a specific format or layout? No strict requirements.

What happens after the jam? All submissions will be featured together on a celebration live stream and promoted on social media. All submissions will be added to the Mausritter Library as well.

Who can I contact for help? Message Matt (ManaDawn / @manarampmatt) on Discord or email manarampmatt@gmail.com.

🐭 About Mausritter 🐭

Mausritter is an award-winning, rules-light fantasy RPG by Isaac Williams. Players take up sword and whisker as brave mice in a perilous, human-sized world.

  • Lightning-fast character creation.
  • Physical item cards and inventory system.
  • Rich, whimsical, and dangerous adventures.

Find out more or grab the boxed sets at mausritter.com.

Final Notes

The Mausritter Month Companion Jam exists to celebrate community creativity. Whether you’re an old hand with tiny hex maps or a first-time creator trying out your first zine — your work matters.

There’s no leaderboard, no judging — just joy, collaboration, and a love of tiny swords.

Sharpen your pencil. Ready your whiskers. The world of Mausritter awaits!

Submissions(61)

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a countryside setting for Mausritter
What if Mausritter but... Ironsworn?
A heist for Mausritter
An unofficial expansion to the rules of Mausritter
A collection of mysterious and treacherous 1-page dungeons for Mausritter
Tiny adventures in a perilous and hopeful future
Wetland Adventure Game
A small collection of mice to be used as NPCs or tokens alongside the Mausritter RPG system
A guinea pig supplement for Mausritter
A swashbuckling expansion for Mausritter
Expanded Room Stocking Charts for Mausritter Adventure Sites
Fablepunk setting for Mausritter
Handy reference for creature design
Adventure
A coastal and tropical Mausritter Adventure
An adventure for Mausritter
A horror scenario for Mausritter
A resting place and mini dungeon for Mausritter
A Mausritter adventure compatible with the Earldom of Ek
A small supplement of a few traps and variants.
create a little mouse character using word prompts from the latest book that you're reading!
A settlement for Mausritter
A one page micro-setting compatible with Mausritter
A Mausritter adventure about creepy dolls, deadly spiders, and the mice who love them!
A sport minigame for Mausritter
Discover the horror of the Kolo-kolo, the lurker in the dark...
An NPC for Mausritter (and sand) (lots of sand)
a Pikmin hack for Mausritter
Item cards for the Mausritter TTRPG, illustrated by Bodie H of Slowquest.
A totally serious hireling add-on designed for Mausritter
Art pack full of hand drawn characters
Tumbleweeds for Mausritter
A mausritter adventure and iconic NPC
A rules light/procedure heavy game of emergent narrative, torches lighting the world and wilds untouched.
Mausritter christmas adventure
A prehistoric setting for Mausritter
A Mausritter adventure site about a crafty mouse with a dream of flight and their pesky neighbours.
A Mausritter-compatible location for adventurous mice
um suplemento de jardinagem Mausritter
Homebrew rules with reworked spellcasting, attributes, etc., and a post-it-friendly character sheet.
Feral, Fierce and Frightening Friends or Foes of Mausantara
Ein kurzes Mausritter Abenteuer, dass die wichtigsten Spielmechaniken erklären soll
Join this Amazonian adventure!
A field guide to the terrors beneath and above.
An ITem card, a treasure and a trap, all in one.
130 achievements for Mausritter
A bookmark NPC
Role Playing
Eine erweiterte Version des NPC Booklet.
A calendar for Mausritter
An adventure for Mausritter amongst a clan of lycanthropic mice.
Food Item for Mausritter
Bring the magic of item cards to your online games!
Lleva la magia de las cartas de item a tus partidas online!
A merchant in the soul trade for Mausritter
my players dreams become your nightmares
A Legend of Zelda meets Mausritter trifold pamphlet
Role Playing