Zombies constantly assault in the identical pattern, when you make an error,

recall the routine of the zombies for when you replay the level.

It's always useful to possess at least one rooftop plant on any given level. By using

plant food on them, they will attack each and every zombie on the level. I love the

Kernelpult since it launches butter and restricts the zombies. This gives you much

needed time to implement other strategies and plants.