I was defeated once because 17.000 people survived in Morocco (The initial zombie population was 24 million). After Z Com's gone for good, check if there are remaining survivors.More often than not, these areas will be destroyed by two or three large-sized hordes, because they won't have time to fortify against your advanced zombies. Don't overdo attacking secondary Z COM bases.If you're fast enough, the base will be created in a country that is already half-infected. Instead, when the airplane takes off, pause the game, predict its general direction, and send a massive zombie horde that way. Don't worry too much: this action will split its resources on two fronts. Z COM will create a second base ridiculously fast.Additionally, If the attack doesn't make it before 'Z-Com lockdown completed' the game is pretty much lost. Send in as many zombies as you can in a large first attack, and keep sending them in if their number decreases.

Note: Ideally, you'd want to attack before 'Z COM kill teams deployed' and in any case before 'Z COM fortresses fully militarised'. Once Z Com is eliminated, and all humans are either eaten or turned into zombies, the game is over and the player wins. Make sure your number of zombies is high before attacking a base, or else your zombies will be massacred.

Z Com's bases are presented by a fortress in a blue box. If a country is destroyed by zombies, the zombies there will begin to starve and die off, so a zombie horde starting at the destroyed country should move to a healthy or weak country for more food. Ultimately, Z-Com will triumph if they have established themselves in too many countries and you will eventually suffer defeat when the last of your zombies decay or are destroyed (and thus the player loses). This will allow Z Com to expand unchecked to more and more countries. If not stopped fast enough, your zombie armies will begin to succumb to decay even if you have all the abilities that prevent this. Z Com will try to decrease and eventually eradicate the number of zombies in the world, starting with the country that they're based in. Z Com will be humanity's greatest protector and the greatest threat against your plague, and, eventually, Z Com will establish a second base in another healthy country, unless the player can destroy the original Z Com base quick enough. Some time after the zombies' grand debut, a certain country that is mostly healthy will form a Z Com base, and humans teamed with Z Com soldiers will defend against your plague. Zombies also do not count toward infected population for the genetic drift factor in Mega-Brutal, ironically making things considerably easier as the cure will cut your costs by removing infections. They can and will overwhelm the world initially.

When zombies do appear, the cure will become useless as it cannot affect your zombies, which can continue killing or converting any living humans, augmented by a variety of special abilities to further escalate their destructive potential.

Neuro-enhancement 1 and 2 can be kept if they naturally evolve as they are expensive to devolve and also speed up cure research.The Necroa Virus, with its low cure requirement, forces the player on a constant offensive to empower their zombies while the cure itself advances.

If cure research does not begin/take too long, let 1 or 2 minor symptoms evolve but be ready to devolve if necessary.

Do not let any symptom mutate, as you need to not kill any human.

Do not evolve Primal Awareness as you need to be detected.

Do not evolve Ape Rampage as you need to be pacific.

Gather all apes into your 3 colonies, and use the Travel ability to avoid being killed by Gen-Sys by moving apes/colonies out of countries with research labs.

If you have extra points evolve Ape Migration, Path Finders and Scouts.

If needed evolve Heat, Cold and Drugs Resistances.

When all Apes are infected, Evolve Air 1 + 2, Water 1 + 2 and Extreme Bioaerosol.

Use World Map to see where still have wild apes.

Use the Travel ability to infect islands apes.

Evolve Organized Travel, Logistics, Horseback Riding and Seafaring.When possible, place 2 more colonies in West and East Africa.Evolve Sebaceous Excretion, Blood Gift, Cutaneous Transfer and Submissive Conception.Evolve Social Cohesion, Cognitive Shift and Education.Evolve Simian Neuro-Genesis and Ape Colonies.

Simian flu plague inc