If you exit one screen too early, then a 10 second penalty will be added on to your time. If you exit even earlier than one screen too early, but you're at least at a point where it is clear that you won the game, then a 30 second penalty will be added to your time. I don't expect to have to use this one unless someone doesn't read the exiting rules before doing a run. If you exit so early that it's possible that you haven't even won the game yet, your run will be rejected.