I think its important to write a description for your game, specially if you dont make a playable webVersion of your game because if you dont make a description, how am i supposed to know what the project gonna work on is about?
Viewing post in how strict are the no communication rules ?
you're not necessarily supposed to know, you're supposed to pick it up and figure it out. I don't know how well that fits a jam of course because you have to pick something... but there are projects that list themes and even ideas of what to do next, and I don't think those are within the spirit of the jam... so I ask. No one wants to get a project disqualified because a previous entrant did something.