How do you make city dots invisible until guessed

Other quizmakers have been able to get Stewart to upload their map for them. Not sure how widespread that is, though.

I don’t see how city dots could make your file too big unless you have a lot of them. Though, I’m not too familiar with making city dots. I’d just make them circle elements, give them all the same class, set that class’s opacity to 0.001 through css style, and turn their opacity to 1 when they have the .correct class added.