Itch also has it's own jam calander
As does Glorious Trainwrecks.
If you want to suggest an event, or even help me maintain the calendar, you can contact me via Mastodon or E-mail.
'Finally Finish Something is a new year's resolution game jam, running for the whole of January. It's designed to help you finally finish a project you've been working on or thinking about for a long time, and the rules are very relaxed.'
'Collab Jam is a chance to work together with another randomly assigned member from GT! You may work together in any way you can agree on.'
Games relating to mysicism, in a broad sense.