Zemblanity – a first-person horror game in which the main character received an invitation from an old childhood friend. Arriving at the appointed place, he found himself trapped by otherworldly forces. Now his main task is to get out of the paranormal and deadly place alive. As the player explores the environment, they uncover secrets and encounter supernatural creatures and events.

It all started when the protagonist receives a letter from an old friend who reports that he has information about his father, who disappeared several years ago. The main character could not refuse this offer and agreed to come to the specified place. Having received the address and key by mail, a few hours later he was already standing in front of the doors of a huge and abandoned mansion. Once inside, the doors closed on their own, after which an alarming journey and struggle for life began.

The environment evolves as the gamer progresses and makes choices. A friend's house is filled with numerous secrets and unusual artifacts. The more secrets the central character reveals, the faster he will understand exactly what plan his acquaintance came up with. The gameplay involves solving puzzles and interacting with surrounding objects. There are many hidden objects and clues scattered throughout the mansion to help you progress through the story.