1: Is this jam limited to only 3D or can we also choose to do 2D assets?

And 2: Can one go either solo or with a group?

I think there are no such rules. Terry has said before that individual submissions are preferred, since this is a learning jam, but in the end we’re here for fun, so do whatever you feel makes sense to you!

Try making something in Godot. Have fun. Rules - nah.