Sanatorium

Not much is known about Max Laughton at first, but it is clear that he is conducting a particularly important research and is close to reaching his goal. Eager to share the good news with his family, Max hurries home in his car. However, somebody has evidently tampered with the vehicle; failing to control it, Max gets in a serious accident and loses his conscience. When he wakes up, he finds himself in a strange tower resembling an asylum, surrounded by insane people, the shrill sound of alarm driving him mad. Max cannot remember anything from his past and is feverishly trying to escape this place. But just when he thinks he has succeeded, he is taken on delusional, horrifying trips through his subconsciousness, unable to distinguish between reality and hallucinations.

Résumé

Although billed as "Slender 2" on some articles and videos, Sanatorium is an unofficial sequel to Slender, developed by a different company, but using the same general idea and gameplay mechanics.

As the name would suggest, Sanatorium takes place in an abandoned long-term health care facility, likely one designed for mental patients. The player needs to collect 8 pieces of paper ("pages") whilst evading the Slender Man.

Unlike Slender, Sanatorium is only available for PC. Sanatorium also features more maps to play on such as "Hospice".