What language are you guys gonna use for the jam? I guess the majority will be using Unity but for those who aren't.
actually no, you can do anything in scratch (Excluding reading a writing files), its just like I said, it gets super laggy and convoluted. but other than that yea, you can do 3d but its very limited and would take ages making a stable, quality, and non laggy 3d game, but in unity and unreal, its just one click of a button. Good luck on your journey.