Howdy, I'm a first time procjammer and a tabletop gamewriter, I didn't see anything specifically saying that this is a software based jam, if so apologies. If it is open as I believe it to be, I'd be interested in hearing about what folks are planning.
I'm planning on doing a game guide for pathfinder/5e with rules to play traveling merchants, minstrels, and hustlers, using limited set materials to establish worldlore and rolling tables for daily travel and events including combat, incidental settlements, friendly encounters, and weather effects. The idea in my mind is to have a balanced and entertaining game experience without questing or overarching plots.