Games like Daemonium
Games like Daemonium include Phasmophobia, Lethal Company, Escape the Backrooms, The Outlast Trials, and Pacify. We matched them by the tags players give Daemonium on Steam (Psychological Horror, Horror, Demons, Investigation, and Online Co-Op): closest matches first, and among equally close ones the better-known games.

Phasmophobia
Shared: Horror · Psychological Horror · Online Co-Op

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

Escape the Backrooms
Shared: Horror · Psychological Horror · Online Co-Op

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

Pacify
Shared: Horror · Psychological Horror · Online Co-Op

Demonologist
Shared: Horror · Psychological Horror · Online Co-Op

Dead by Daylight
Shared: Horror · Survival Horror · Online Co-Op

DEVOUR
Shared: Horror · Online Co-Op · Psychological Horror

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

Backrooms: Escape Together
Shared: Horror · Psychological Horror · Online Co-Op

PANICORE
Shared: Horror · Psychological Horror · Online Co-Op

Outlast
Shared: Horror · Psychological Horror · Survival Horror

Poppy Playtime
Shared: Horror · Psychological Horror · Survival Horror

Lunch Lady
Shared: Horror · Online Co-Op · Psychological Horror

Nuclear Nightmare
Shared: Horror · Online Co-Op · Psychological Horror

Dying Light
Shared: Horror · Survival Horror · Online Co-Op

In Silence
Shared: Horror · Psychological Horror · Online Co-Op

Species: Unknown
Shared: Horror · Online Co-Op · Survival Horror

BIGFOOT
Shared: Horror · Online Co-Op · Survival Horror

Zort
Shared: Horror · Psychological Horror · Online Co-Op

Outlast 2
Shared: Psychological Horror · Horror · Survival Horror

Ghost Watchers
Shared: Horror · Demons · Survival Horror

R.E.P.O.
Shared: Horror · Online Co-Op · First-Person

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

