Zombie Attack
From SimCity Wiki
Zombie attack is a disaster that summons zombies that roam the streets at night and feast on the brains of unsuspecting Sims. Police will attempt to control the infestation. When the sun rises all zombies perish.
Zombie Attack is unlocked through a secret achievement:
- Laboratory Outbreak - Add a Diagnostic Lab to a Hospital and have 15 Sims die in a day to gain access to the Zombie Attack disaster!