Players in the game control two personas - a doctor and a patient. The patient is the primary character. Characters in the game have a name, a song, and a diagnosed mental illness - the game includes a list derived from a medical dictionary. The character's "song" is a secret five-word song, or description, of the character's self. It obsessively runs through the character's mind. Characters have three Attributes - Blood, Psyche, and Volcano. Blood and Psyche are, in many ways, opposite sides of a tug-of-war.
The game includes a text-based character sheet, notable for having two "characters" on the sheet. The game also was published as a formatted PDF on the author's personal site (this does not appear currently to be available, however).