If you completed a game but didn't quite make the deadline, just make an itch.io page for it and post the url below.
Unless I find any serious problems with it, I'll include it in the bundle! You just won't be able to have your game rated by other people as part of the jam.
Edit: I was wrong! I can get your game in the jam with a special url, just paste the itch.io page link below and I'll sort it out.