Dangandropa is a really good anime that is still airing and is quite new , it revolves around 15/16 students being traped in a weird school, the only way to get out of this school is to graduate ! Only problem is the way you graduate , this can only been done if you commit murder and get away with it or your the last person alive !! All this tension of not being able to get out obviously makes people think about participating in this game
What's good about this anime is that you can participate by trying to guess who murdered the person/s before they do in the anime ?! As evidence and suck and such is shown