Slendrina The Cellar is a horror game that features a more evil version of the character than before. Slendrina hates it when someone intrudes on her territory and will do anything to stop them. Players must find eight missing old books in the dark cellar and run to the exit while also searching for keys to open certain doors. The books and keys could be hidden anywhere, so players must look everywhere.

The game is similar to Slender Man and is free to play, but it contains advertising. Players can also earn STC-points in the game to unlock all levels for free. The developer thanks players for their kind ratings and encourages them to send emails in English or Swedish.

Overall, Slendrina The Cellar is a thrilling horror game that challenges players to navigate a dark cellar while avoiding the evil Slendrina. With hidden books and keys to find, players must be vigilant and explore every corner of the cellar. The game is free to play but contains advertising, and players can earn STC-points to unlock all levels for free.