Areas are the places which the player fights zombies. Most areas in the Plants vs. Zombies series have some special variations in them. For example, in the Pool stage, the player needs to use different plants to arm against zombies coming from the water. In the Fog, the player cannot see parts of the screen, and in the Roof, the player needs to use catapults because of the slope of the roof. Areas from Plants vs. Zombies 2 include different kinds of boosts and obstacles. Each area has new zombies and plants to unlock, and sometimes an entirely new strategy.