Day 4 - Your guilty pleasure game.
Guilty pleasure? That's...a tough one. There aren't really many games that I play that I don't want others knowing about, if any. This one is less me being indecisive and more just not knowing if there's an answer.
I'm gonna have to say none. There really just aren't any games that I only feel comfortable playing behind closed doors. I think there were, at a time, these days I spend most of my time with roomates, so there's really nothing to hide.