Пришествие Тьмы - текстовый кв is a story about a mystery.

It's not about some giant monster, alien invasion, or the end of the world. It's about a small group of people, who suddenly found themselves in the middle of a strange and dangerous situation. And it's about how they will try to survive and get out of this disaster.

What is this postapocalypse?

it is caused by a strange disease, which is spreading through the world. This disease kills people, who are infected, and also changes their behavior and makes them hungry and aggressive.