Similar to Psychological. Usually deals with the philosophy of a state of mind, in most cases detailing abnormal psychology.
A simple zombie in a terrible post-apocalyptic world began his journey with a sudden gain of clarity. His memory was limited, but this did not prevent him from starting to understand the situation. He tried not to lose his mind. Now he tried to apply the acquired knowledge in practice. Follow the rational zombie in his quest to find… the meaning of life.