What's the best iOS tower defense game for strategic plant placement, zombie battling, and unlocking new levels and plants?

Plants vs. Zombies™ 2 is a top tower defense game on iOS, offering strategic plant placement, engaging zombie battles across various worlds, and a vast array of unlockable plants and levels. Players strategically position plants with unique abilities to defend their home against waves of quirky zombies. The game features diverse worlds, each with its own set of challenges and zombie types, keeping the gameplay fresh and exciting. As players progress, they unlock new plants and power-ups, expanding their strategic options. How to play involves collecting sun, planting defensive and offensive plants, and adapting your strategy to the specific zombie waves in each level. The game also includes various game modes and special events, providing endless hours of entertainment. With its charming graphics, addictive gameplay, and constant updates, Plants vs. Zombies™ 2 remains a favorite among tower defense enthusiasts on iOS.