Games like Ghost Frequency
Games like Ghost Frequency include Phasmophobia, Demonologist, Outlast, Poppy Playtime, and Buckshot Roulette. We matched them by the tags players give Ghost Frequency on Steam (Horror, Investigation, Dark, Thriller, and Psychological Horror): closest matches first, and among equally close ones the better-known games.

Phasmophobia
Shared: Horror · Psychological Horror · Investigation

Demonologist
Shared: Horror · Psychological Horror · Dark

Outlast
Shared: Horror · Psychological Horror · First-Person

Poppy Playtime
Shared: Horror · Dark · Psychological Horror

Buckshot Roulette
Shared: Dark · Horror · First-Person

Mouthwashing
Shared: Horror · Psychological Horror · Dark

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

MiSide
Shared: Horror · Psychological Horror · First-Person

Outlast 2
Shared: Horror · Psychological Horror · Dark

Garten of Banban
Shared: Horror · Psychological Horror · Dark

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

The Outlast Trials
Shared: Horror · Psychological Horror · First-Person

Little Nightmares II
Shared: Horror · Dark · Psychological Horror

SOMA
Shared: Horror · Psychological Horror · Dark

Visage
Shared: Horror · Dark · Psychological Horror

Escape the Backrooms
Shared: Horror · Psychological Horror · First-Person

Backrooms: Lost Tape
Shared: Horror · Dark · Psychological Horror

Garten of Banban 2
Shared: Horror · Psychological Horror · Dark

Amnesia: The Dark Descent
Shared: Horror · Psychological Horror · Dark

Supernormal
Shared: Horror · Psychological Horror · Dark

Darkwood
Shared: Horror · Psychological Horror · Dark

Alone in the Dark
Shared: Horror · Psychological Horror · Dark

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

Alan Wake
Shared: Horror · Thriller · Action