Seed slots represent the number of seed packets the player can bring into a level. At the beginning of the game. Juega a la aventura de acción y estrategia en la que podrás conocer, saludar y derrotar a legiones de zombis alocados desde el amanecer de los tiempos hasta. . They have different designs in each game. plants vs zombies 2 upgrades. Zombies 2, premium plants' seed packets have a unique look, with a shiny gold outline and galaxy look for the center, and since the update, world obtained.