Have You heard anything about the popular game PlantZ vs. ZombZ? So here is a game in the genre of "tower defense" where players defend their garden from the endless groups of zombies. Now Minecraft PE mod PlantZ VS ZombZ adds 5 characters from this game. Some of the new mobs in the world, MCPE have interesting abilities, for example, the ability to shoot peas at zombies. In General, I really liked this add-on for Minecraft PE, and I advise You to try it!