Games like iBLiS
Games like iBLiS include Phasmophobia, Pacify, Poppy Playtime, Demonologist, and The Mortuary Assistant. We matched them by the tags players give iBLiS on Steam (Psychological Horror, Horror, Psychological, Thriller, and Supernatural): closest matches first, and among equally close ones the better-known games.

Phasmophobia
Shared: Horror · Psychological Horror · Supernatural

Pacify
Shared: Horror · Psychological Horror · Supernatural

Poppy Playtime
Shared: Horror · Psychological Horror · Mystery

Demonologist
Shared: Horror · Psychological Horror · Demons

The Mortuary Assistant
Shared: Horror · Supernatural · Demons

Outlast
Shared: Horror · Psychological Horror · Survival Horror

Dread Flats
Shared: Horror · Psychological Horror · Supernatural

Mouthwashing
Shared: Psychological Horror · Horror · Psychological

Escape the Backrooms
Shared: Horror · Psychological Horror · Survival Horror

Summer of '58
Shared: Horror · Psychological Horror · Thriller

Ghost Exorcism INC.
Shared: Horror · Psychological Horror · Supernatural

No, I'm not a Human
Shared: Psychological Horror · Horror · Psychological

Lethal Company
Shared: Horror · Psychological Horror · Exploration

Conrad Stevenson's Paranormal P.I.
Shared: Psychological Horror · Horror · Supernatural

The Outlast Trials
Shared: Horror · Psychological Horror · Survival Horror

Inside the Backrooms
Shared: Horror · Psychological Horror · Survival Horror

SOMA
Shared: Psychological Horror · Horror · Exploration

Five Nights at Freddy's
Shared: Horror · Psychological Horror · Survival Horror

Darkwood
Shared: Horror · Psychological Horror · Survival Horror

SILENT HILL 2
Shared: Psychological Horror · Horror · Psychological

Supernormal
Shared: Horror · Psychological Horror · Supernatural

Outlast 2
Shared: Psychological Horror · Horror · Survival Horror

Sally Face - Episode One
Shared: Psychological Horror · Horror · Mystery

Visage
Shared: Psychological Horror · Horror · Survival Horror