A murderer(s) is on the loose! Trapped in a house full of comrades known from childhood, the group must work together to figure out who it is. Each night, someone is killed off. If they don't figure out who it is quick, they'll all end up dead... And it all started because they played Mafia as children.

Daisy Sarasa was born with a unusual birthmark on her shoulder- a flower. When it is discovered she has it, she's immediately thrown into a high class prison that contain other people just like her. Between trying to survive the constant arena fights as well as the rampages of the Killing Princess, Daisy isn't confident she'll leave this place sane. But after all, insanity isn't so bad in a place where everyone else is, too...

(Sequel to Insanity) Haunted by the events of the past, Daisy Sarasa thought she had found a home and safety at the prison until the sudden death of one of her friends. No longer feeling safe, she must figure out a way to break out of the prison without unleashing more evil onto the world.

(PREQUEL TO INSANITY, READ THAT FIRST) Long before Daisy and everyone joined the ward, a lone girl was just thrown into the prison. Confused and not knowing what to do, she must figure out how to stay alive when she has to constantly fight monsters for a living. This is how the girl named Satsuki Reiko came to be.

The Mario crew is back again- but yet again, another or multiple mafias have infiltrated their ranks! Can you figure out the mafia(s)?

Confused. Anxious. Worried. How did they get there? Everyone wakes up in a classroom, where they eventually find the others in the gym. They're then told that they're trapped there forever... unless they manage to get away with murder. Just who's willing to pay the Ultimate Price?