This jam is now over. It ran from 2017-10-01 04:00:00 to 2017-11-30 05:00:00. View 1 entry
That's the only rule of the jam.
You can start as early as you want. You can work in a team or solo, and there's no judging at the end. I've set up a community page, so you can talk to other designers and form playtest groups to test how well your game works. Have fun, and jam to find out what happens!