Rule-Based Games: The School That Doesn't Exist

At one in the morning, Lin Wan receives an invitation from her alma mater. But the school was demolished three years ago. She pushes open the door and finds the rules posted on the wall: Leave before 8:50. Her roommate, dead for three years, suddenly appears. “Don’t open that letter!” Forty-seven people are trapped in the building, and she might not even be human. Someone has to stay behind forever.