Replying...
Intro. Scientists tried to improve human DNA with animal genes (strength, speed, regeneration) but by accident a leak in the laboratory released a mutagenic virus causing the test subjects to transform into zombies, and the virus spread throughout the world. And the more time I spent in an area, it gets mutations to adapt to that ecosystem. Some of the zombies can be the wet-skinned, mushroomy, glowing-eyed swamps. The Urbanos of embedded metallic remains. The Deserts with parched skin, eyes like embers. Among other types of zombies

Changing the Apocalypse

@ANGEL