Что если я не успел сделать готовый проект к концу сроков? Есть смысл показывать его или это не по правилам джема?

What if I didn't have time to complete the finished project by the end of the deadline? Does it make sense to show it?

I think so FWIW! Especially if it you can progress a little further than a loading screen. You could just leave a note about it being incomplete on the submission page.

Cheers,
  Lee