Bishoujo wa Check ga Osuki

You participate in personality quizzes with several girls giving Yes or No answers. If you appear to be the personality the girl likes - she will be undressing with each new round.

The mechanics are simple, but fun and engaging enough. Questions are of all kind of weirdness so it was awkward to answer on the video. I'm not really sure this game qualifies for visual novel though since there is absolutely no story or characters to get to know - just reward HCG.