Zombie War

The world changed in the last 20 years, wait 20 years or 50 years, I can’t remember anything, even my name. What’s happening to me?.
The new hunger is very mighty, biting into the flesh of your own kind is disgusting, but it’s a must. Especially the brain, its a delicacy. I don’t know what turned us into this. Maybe a bio chemical outbreak turned us into this, I can’t figure it out. I can understand my surroundings perfectly, maybe some of them can also think, oh sorry, I forgot that we are dead, we are all dead. But how can a corpse think, the only thing we do is grrhhh at each other. My case is different, I understand my surroundings perfectly, I have the ability to think. But this new form of me controls my body, the only thing going through my head is “EAT HUMAN”. Oh Geez we are damn hungry, none of us has eaten in the last 2yrs, maybe we have eaten all humans left.
Those guys over there are Stage 2 corpse, Their structure appears has skeletons, but they have improved physique, they can run faster, climb walls, but they don’t disturb us much. And there are Stage 3 corpse, I advice you to stay away from these guys, they feed on human and even us stage 1 corpse, they isolate themselves in deep places or big spacious places.
Okay before you start reading the Novel, I want you to know that this is my First Novel, there might me test errors, I will always try to improve.