The rise of the dead has brought the world to its knees. Z-Level 1 - Undead Population minimal. Infection Risk minimal. Area considered suitable for inhabitance. Z-Level 2 - Low Undead Population. Infection Risk low. Inhabitants are warned to monitor surroundings. Z-Level 3 - Undead Population increased. Threat Level low but has potential risk of elevating. Approximately 10 undead per every 100 inhabitants. Citizens encouraged to remain indoors. Pack...