Prepare for a zombie showdown in Zombie Idle Defense! In this exciting idle defense game, you will be the last line of defense against wave after wave of zombie attacks! Build your defenses,upgrade your weapons, put your automatic turrets on fire, and fight off the undead! Zombie Idle Defense, idle game, zombie game, defense game, tower defense, upgrade, build, strategy, undead, apocalypse, mobile game, arcade game, clicker game, free game, zombie survival, base building, resource management