Ultimate Zombie Defense (PC Digital Download) Free

Ultimate Zombie Defense (PC Digital Download) is available for free on Steam. A Steam account/application is required to redeem the code and play the game. Team up or face it alone in this top-down zombie slaying defense adventure! Featuring up to 4 player online co-op, cleanse the infected wave by wave and upgrade your base with traps & defenses to build the Ultimate Zombie Defense. Can YOU stop them?