Working overtime, being alone in the office, and suddenly tons of zombies rushing to your desk. what are you waiting for? pick up your stuffs and blow their head! - regular, advance, nightmare and survival modes - one main weapon, three free weapons and five unlockable weapons - achievements feature - opening and ending - power ups : heal, bombs, extra ammo and invincible - upgrades : ammo, health, speed, bombs, evasion
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