Three Sails Studios
Community Licence
Version 1.1
Last Updated: 11/07/2026
The Three Sails Studios Community Licence allows creators (designers, writers, artists, content creators, streamers, etc.) to make content based on our games. The Community Licence allows you to publish and monetise your creations and to keep 100% of the proceeds.
What follows are the conditions for the Community Licence, as well as what Three Sails Studios products it applies to. If anything is unclear, or if you’re seeking further clarification, please contact us at george[at]threesailsstudios.com with the subject ‘Community Licence Inquiry’.
This Community Licence applies to:
Mappa Mundi - An Exploration + Ecology RPG
Chronicles of the Wilds
Mappa Mundi Solo Supplement
Gallows Corner - A Peasants’ Revolt RPG
This Community Licence does not permit you to create or to distribute merchandise based on any of our games or artwork. If you want to commercially licence any Three Sails Studios product or artwork, please contact us at george[at]threesailsstudios.com
This Community Licence does not allow for any Three Sails Studios product or artwork to be used alongside content created using Generative AI or any LLM. We expressly forbid the use of any Three Sails Studios product, or any part thereof, in the use of training Generative AI tools or LLMs.
THREE SAILS STUDIOS COMMUNITY LICENCE
Mappa Mundi - An Exploration + Ecology RPG
THIS COMMUNITY LICENCE PERMITS YOU TO:
Create supplements, hacks, and modules that are compatible with the game, create new Monsters and Creatures, and create new places and locations that are part of/expand on the existing setting (the ten Regions covered in the Mappa Mundi core rulebook), either for free or monetised. Hacks, in this context, includes making new games (i.e, not Mappa Mundi games) that make use of the Mappa Mundi system.
YOU MAY ALSO:
Publish new adventures for Mappa Mundi, as demonstrated by those official adventures published under the Chronicles of the Wilds title, as long as those adventures take place in the existing setting (the ten Regions covered in the Mappa Mundi core rulebook). You may make these available for free or monetise them.
YOU MUST:
Credit Three Sails Studios and link to the Mappa Mundi website. See ‘You Must Include The Following’ below.
YOU MUST NOT:
Use or translate any substantial text from the Mappa Mundi core rulebook, Chronicles of the Wilds, or the Solo Supplement. Permissible uses include references to existing people, places, names, and Monsters and Creatures.
Use our company logos or the Mappa Mundi logo
Claim, or in any way imply, that your product is ‘official’ or ‘licenced’ without our explicit permission.
Do anything that brings Mappa Mundi - An Exploration + Ecology RPG or Three Sails Studios into disrepute. This
includes, but is not limited to, making something illegal, racist, misogynistic, homophobic, transphobic, or otherwise
derogatory. Three Sails Studios reserves the right to determine these categories.
YOU SHOULD:
If creating a supplement or module for Mappa Mundi, use the following logo, showing that your product is compatible with Mappa Mundi and showing that it is published under this Community Licence. You shouldn’t change the logo in any way, beyond changing its size.
The logo can be downloaded here.If creating a hack or new game based on the Mappa Mundi system, use the following logo, showing that your product is made with the Mappa Mundi system and/or rules and showing that it is published under this Community Licence. You shouldn’t change the logo in any way, beyond changing its size.
The logo can be downloaded here (logo to follow shortly).
Send us an email and let us know what you’ve created. We’d love to share it with our community, or even potentially buy some from you to sell to our customers at conventions.
YOU MUST INCLUDE THE FOLLOWING:
“[Product Name] is an independent publication created by [Author or Publisher Name] and is not affiliated with Three Sails Studios. It is published under the Three Sails Studios Community Licence. Mappa Mundi - An Exploration + Ecology RPG is the intellectual property of Three Sails Studios. You can find out more about Mappa Mundi at www.mappamundirpg.com”
Gallows Corner - A Peasants’ Revolt RPG
THIS COMMUNITY LICENCE PERMITS YOU TO:
Create supplements, hacks, and modules that are compatible with the game, create new Trades and Jobs, and create new places and locations that are part of/expand on the existing setting , either for free or monetised. Hacks, in this context, includes making new games (i.e, not Gallows Corner games) that make use of the Gallows Corner system.
YOU MAY ALSO:
Publish new adventures for Gallows Corner, as demonstrated by those official adventures published under the ‘Tales of Old England’ title. You may make these available for free or monetise them.
YOU MUST:
Credit Three Sails Studios and link to the Gallows Corner website. See ‘You Must Include The Following’ below.
YOU MUST NOT:
Use or translate any substantial text from the Gallows Corner core rulebook or any zines in the ‘Tales of Old England’ series. Permissible uses include references to existing people, places, and names.
Use our company logos or the Gallows Corner logo
Claim, or in any way imply, that your product is ‘official’ or ‘licenced’ without our explicit permission.
Do anything that brings Gallows Corner - A Peasants’ Revolt RPG or Three Sails Studios into disrepute. This
includes, but is not limited to, making something illegal, racist, misogynistic, homophobic, transphobic, or otherwise
derogatory. Three Sails Studios reserves the right to determine these categories.
YOU SHOULD:
If creating a supplement or module for Gallows Corner, use the following logo, showing that your product is compatible with Gallows Corner and showing that it is published under this Community Licence. You shouldn’t change the logo in any way, beyond changing its size.
The logo can be downloaded here.If creating a hack or new game based on the Gallows Corner system, use the following logo, showing that your product is made with the Gallows Corner system and/or rules and showing that it is published under this Community Licence. You shouldn’t change the logo in any way, beyond changing its size.
The logo can be downloaded here (logo to follow shortly).
Send us an email and let us know what you’ve created. We’d love to share it with our community, or even potentially buy some from you to sell to our customers at conventions.
YOU MUST INCLUDE THE FOLLOWING:
“[Product Name] is an independent publication created by [Author or Publisher Name] and is not affiliated with Three Sails Studios. It is published under the Three Sails Studios Community Licence. Gallows Corner - A Peasants’ Revolt RPG is the intellectual property of Three Sails Studios. You can find out more about Gallows Corner at www.gallowscornerrpg.com”