The Tank popup.


Anabolic Boost and Bone Dysplasia cause some zombies to develop enormous strength and body mass - increasing their severity

Symptoms Needed

Anabolic Boost
Bone Dysplasia

Achievement Earned


Tank is a symptom combo exclusive to the Necroa Virus DLC which allows some zombies to greatly increase strength and body mass. Severity increases when this combo is in play. Anabolic Boost and Bone Dysplasia are required. The achievement Tank is earned for forming the combo.


  • This combo may based on a type of zombie from Valve's Left 4 Dead franchise. The mentioned zombie is very, very powerful both in terms of combat and defense and hard to take on.
Symptom Combos in Plague Inc. and Plague Inc: Evolved.
AssassinBath TimeBlind GeniusBlood in the AirBoomerCarpe JugulumCranial DispersionDiscovery ChannelFly MagnetOn The Naughty ListOopsProfuse BleedingProjectile VomitingPublic DefecationRed Ape RedemptionRed RainRude AwakeningRunnerSpitterSwinefluSymptom CombosTankUltimate ChristmasVampire BatWalking ContradictionWalking DeadZombie Panic