zombies (by 3 people)

apocalyptic fiction (by 2 people)

horror (by 2 people)

young adult (by 2 people)

action adventure (by 1 person)

drama (by 1 person)

dystopia (by 1 person)

fiction (by 1 person)

first in series (by 1 person)

horror-fiction (by 1 person)

romance (by 1 person)

science fiction (by 1 person)

society (by 1 person)

survival (by 1 person)

undead (by 1 person)

ya (by 1 person)