Games like Unpossess: Exorcism Simulator
Games like Unpossess: Exorcism Simulator include Phasmophobia, Pacify, Escape the Backrooms, Backrooms: Escape Together, and Demonologist. We matched them by the tags players give Unpossess: Exorcism Simulator on Steam (Supernatural, Psychological Horror, Multiplayer, Horror, and Demons): closest matches first, and among equally close ones the better-known games.

Phasmophobia
Shared: Horror · Multiplayer · Psychological Horror

Pacify
Shared: Horror · Multiplayer · Psychological Horror

Escape the Backrooms
Shared: Multiplayer · Horror · Psychological Horror

Backrooms: Escape Together
Shared: Multiplayer · Psychological Horror · Horror

Demonologist
Shared: Multiplayer · Horror · Psychological Horror

DEVOUR
Shared: Horror · Multiplayer · Psychological Horror

The Outlast Trials
Shared: Multiplayer · Horror · Psychological Horror

Dead by Daylight
Shared: Multiplayer · Horror · Co-op

Inside the Backrooms
Shared: Multiplayer · Horror · Psychological Horror

Lethal Company
Shared: Horror · Co-op · Online Co-Op

Lunch Lady
Shared: Horror · Multiplayer · Co-op

Labyrinthine
Shared: Horror · Multiplayer · Psychological Horror

Ghost Exorcism INC.
Shared: Multiplayer · Supernatural · Horror

BIGFOOT
Shared: Multiplayer · Horror · Co-op

Nuclear Nightmare
Shared: Horror · Psychological Horror · Co-op

Content Warning
Shared: Horror · Multiplayer · Online Co-Op

Outlast
Shared: Horror · Psychological Horror · Multiplayer

Ghost Watchers
Shared: Horror · Multiplayer · Co-op

PEAK
Shared: Multiplayer · Co-op · Online Co-Op

Ready or Not
Shared: Multiplayer · Co-op · Horror

PANICORE
Shared: Horror · Psychological Horror · Multiplayer

Fears to Fathom® - Scratch Creek
Shared: Horror · Multiplayer · Psychological Horror

In Silence
Shared: Multiplayer · Horror · Psychological Horror

Fear Therapy
Shared: Multiplayer · Horror · Psychological Horror