Hi!
“Jams” are just sort of events that say, “hey everybody, come make stuff!”
Every jam has different rules and conditions. Some are “hey, come make video games about trains!” Others are more “hey, come write stories based on this series!”
This jam is open to all tabletop roleplaying game related entries that are irrevocably (forever) open licensed! The list of resources is for reference and convenience. People are encouraged to build on existing resources but all contributions to open gaming pool are welcomed.
Whether you release a final product, a playtest edition, a jam ashcan, or something else is entirely up to you! The same with any future updates or expansions. Entries link to the title’s Itch page. It is not a separate submission. Anything you update or change is done per normal for Itch. (For the record, just talking about how Itch jams work.)
Hope that clarifies! Let me know if you have any other questions.