The intense defense in Zombie Protocol will turn protecting the central generator into a test of your endurance and ability to increase energy production in time to purchase new units. You need to wisely place infantry and snipers on the map, trying to hold back the onslaught of the dead at every stage of this harsh process. Carefully monitor the core temperature and click on the Zombie Protocol setting in time to speed up the flow of resources and get game points. For each wave of zombies reflected and fortification of firing positions with arrows, you are awarded bonuses. A good response to overheating and correct calculation of the squad size will help you withstand the growing power of the enemy. Your determination and talent as a strategist will allow you to efficiently spend energy, unlock powerful fighters and become a reliable shield in this survival protocol.