This is the fourth world in this game, Note that the fog will cover zombies making it harder for plants to track them after you plant them, This is the little harder version than this project "Plants vs. Zombies: Night" in this game. Remember, if you defeat all zombies in the final wave, you can get the trophy and complete the level now, Start levels 31-40 in this game. Some levels are getting harder after you complete each level in this game. After you complete this fourth world, check to see the instructions how to go to next world and play it.
Jack-in-the-Box Zombie: Explodes and kills plants into a high range after death. Balloon Zombie: Floats over the plants including Wall-nuts, immune to most attacks except Cherry-Bombs and Jalapenos. Digger Zombie: Goes to the end of the lawn and faces the left side and eats plants. Pogo Zombie: He has very fast speed and bounces over the plants including Wall-nut to quickly eat your brains. ???: This legendary and curious creature will not appear after you replay an adventure mode on Level 4-10, and can be found extremely rarely in this game.