Presumably we have quite a large intersection of people who love markdown and people who love ttrpgs here.
So, people might be interested in the activity to convert all the Ars Magica texts that were recently released under an open license into a markdown version:

The text of Ars Magica 5th Edition and its sourcebooks (53 books total) has been released under an open license: the Creative Commons Attribution-ShareAlike 4.0 International license (CC BY-SA 4.0)...
The Ars Magica or DnD 5e campaign called Serenissima Obscura, set in Venice in the Renaissance (with magic), pre-order ends in 4 day (31st of March)
https://serenissima-obscura.backerkit.com/hosted_preorders
Last Call.

Serenissima Obscura is a setting guide & modular adventure in a dark version of Renaissance Venice. • Play with 5e, Ars Magica or your favourite system! • Combine with "The Straight Way Lost – Adventuring through Heaven and Hell" for years of exciting roleplay! This pre-order store will close soon. After that, all add-ons will only be available in their digital versions. So: Don't miss your chance to get the print editions of the Ars Magica conversion guide, the maps and the 5e Player's Guide.
RE: https://archaeo.social/@mrundkvist/116231882795236472
Viendo esta noticia supongo que también encontraréis interesante la web Project: Redcap, que se está encargando de preparar los textos para que que estén disponibles:
https://www.reddit.com/r/rpg/comments/1rtvbs3/ars_magica_is_free/oahbq76/
Holy *shit*. That's cool.