Чёрная книга ("Black Book") is an adventure cooperative game for 1-4 players based on the Black Book video game developed by Morteshka.

Over the course of six stories, you will have to make many choices: which path to take in the story, how to evolve your character, how to deal with the demons that beset him. Each choice can affect the final story and the entire campaign.

Key features:

6 atmospheric stories with multiple branches and endings.

Ability to combine them into a campaign with achievements and new components.

Unique combat and checkpointing system that reinvents the cooperative genre of games.

—description from the publisher (translated)