: A powerful limited-use resource that triggers unique "ultimate" abilities for each plant (e.g., Peashooter firing a massive barrage of peas) .
Each world introduces environment-specific mechanics, zombies, and plants: Plants vs. Zombies 2: It's About Time
The core mechanics remain faithful to the original—planting defenses on a five-row grid to stop incoming zombies—but introduce several new tactical layers : : A powerful limited-use resource that triggers unique