The "Theme" will be announced on our Discord Channel

Join our Discord Server: https://discord.gg/qbXBdraJRc for any announcements, notifications, themes about this, and future jams! meet other participants and other cool game developers who will be with you, listen to you, feel your pains XD be part of our growing community!

I apologize for the inconvenience..

you may try entering in my discord channel here https://discord.gg/3NFwwpD36E

also the theme for the Game Jam is "Environment" 

I've also extended the Game Jam to 7 days... have fun deving!