At the moment when the mutation was officially opened, the zombies surrounding the base also began to mutate!

Most of the corpse tables have turned red. As the color changed, their flesh was no longer as rotten and loose as before, but reconstituted and reborn.

Their red skin is both strong and elastic, and its protective function is far beyond the skin structure of human beings, which can effectively cushion external damage and greatly reduce the damage of physical injuries such as swords and bullets to their limbs.

In addition, underneath the red skin is covered with slightly raised musculature. From this moment on, the zombies officially announced that they had regained the advantage of athleticism, and they would no longer be like old grandfathers, moving in an old state, but for the first time, they would open their legs and hunt all prey in sight with a running and sprinting attitude.

This, combined with their mutated and strengthened claws and fangs, increases their lethality several times?!

In addition to the red zombies, which account for more than half of the new zombie species, the second most numerous is the green zombies.

Compared to the red zombies, their agility has not improved much, and even the claws and fangs have degraded and fallen off, but these do not affect them to become a terrifying force among the first-order zombies, just because their skin and muscle tissue have been more terrifyingly strengthened!

The refugees of the previous life habitually referred to the green zombies as the Hulk zombies because of their mutated terrifying appearance! The flesh of each green zombie increased dramatically, turning it into a large body that was more than two meters tall and its weight soared to more than 100 kilograms. They are infinitely powerful, and once ordinary humans are caught, they will never be able to break free with their own strength, and they can only wait for the fate of being eaten after the bones of their bodies are crushed little by little!

Compared to the above points. One of the most feared things about the green zombies, and even the government, is their ability to defend themselves at the top of the zombie group!

Take zombies of the same level as an example, although the red zombies have strengthened their physical skin, they can always have a certain killing effect when they use a lethal assault rifle like the QBZ95 type to strafe, but the same firearm. It's hard to hit Hulk zombies, and you don't have a chance to pierce their skin unless you can shoot them accurately, but it's an extremely difficult task even for ordinary soldiers!

Whenever a human stronghold is attacked, red zombies and green zombies always appear together, which greatly increases the difficulty of human survival, and even makes the number of all human beings suddenly decrease in just a few months, and the speed of their extinction has increased by more than five times compared to the early days of the apocalypse!

But the main killer who contributed to the rapid demise of humanity. In addition to the above two types of zombies, there is a third type of zombie, commonly known as-

Sentinel Zombies!

The skin of the sentinel zombie is all purple, and once it disappears into the night, it is difficult to be found again, so it is also called the purple zombie.

Compared to the previous Red Zombies and Green Zombies, the Sentinel Zombies have neither great lethality nor steel-solid bodies. But it can play an irreplaceable role in the entire zombie community, even close to the general role of "commander". The reason for this is their unique mutation route!

The mutated sentinel zombies are even shorter, but their sense of smell, hearing, and vision has been greatly enhanced, and even at night, several kilometers apart, they can still find the humans hiding in the building.

In addition to this, the soles and palms of their feet also differentiate into something similar to the webbing of the paws of geckos. They have rows of "pads" growing underneath each toe. Each "pad" is attached to tens of thousands of bristles, and hundreds of hairy "small brushes" are scattered at the top of the hairless bristles, which have a strong adsorption capacity.

It's these limb tissues that allow the Sentinel Zombies to easily climb tall buildings, burrow into bedrooms, eat and kill humans!

However. The biggest reason why the Sentinel Zombie can act as the commander of the corpse group is because of the specific cry it emits. The scream contains multiple frequency bands of sound waves, overlapping each other like a code, and even the most sophisticated human computers cannot decipher its mysteries, but this does not prevent other zombies from being able to understand and act according to the instructions of the call!

Once the Sentinel Zombies discover an opponent they can't swallow on their own, they will make a special call to attract more zombies to come and destroy the human colony or large mutant beasts, and take the opportunity to get a piece of the pie.

Therefore, the survivors who have survived for a while in the apocalypse, everyone has a rule against zombies in mind, that is, the so-called "purple-red-green", which means that in the case of choice, the first thing is to kill the purple zombie to prevent its cry from attracting more corpses, the second is the red zombie, and the third is the most durable but relatively weak green zombie.

In addition to the above three types of purple, red and green zombies, there is occasionally a small probability that some special zombies will appear. These special zombies are like special people in the human race, the number is small, but the mutation direction is different, and sometimes there are difficult guys.

The mutation continued for an hour, and when the mutation ended, the excited roars of the zombies were heard from all sides of the base!

The hools of thousands of first-order zombies in unison almost shattered Ye Bing's eardrums!

He hurried back to the base, closed the gate, and the world was quiet again.

"Ha, ha, it's been a long time, this feeling. First-Order Zombies......"

Ye Bing silently adjusted the shell of the base to a fully transparent state, allowing him to clearly observe the situation around the base.

It can be seen that most of the primary-level zombies that originally surrounded the base have mutated into first-order zombies, among which the number of red zombies is the largest, and there are not a few Hulk zombies, and dozens of purple sentinel zombies can be vaguely seen.

Such a group of corpses can be regarded as the standard configuration of the last days.

If you want to compete with such a huge group of corpses, you must have an army of more than 5,000 people, and everyone is fully armed.

However, compared to the bustling area of the city center, where tens of thousands of zombies can be gathered at every turn, these thousands are just a small witch at the moment. But Rao is enough to give a pot of drink to those who have bad intentions towards the Doom Base.

In addition to this, he also discovered some changes within the base. Before going to bed, he had confessed to Natasha to clean up some of the zombies on the periphery of the base.

Today, the results are quite remarkable. At present, the boundary of the base's protective circle has been extended by ten meters compared to before, and the territory of the entire protective circle has been expanded by as much as three times!

This allows Ye Bing to have more places to place new buildings, and at the same time use the function of the terrain transformer to design a terrain that is easy to defend and difficult to attack! (To be continued.) )