Zombie Fog is an environmental aspect of Plants vs. Zombies Adventures. It is used by the zombies to mask themselves and render the player unaware of what is ahead. Zombie Fog borders the Player's Town over any lot they have not reclaimed yet from the zombies, as well as Zombie Paradises. Supposedly, the Fog-a-majig could blow away fog, revealing what lies inside. The player could battle zombies in the Zombie Fog to reclaim lots if they meet the requirements to unlock the lot. Some regular levels contained Zombie Fog as an added difficulty.