Games like Through the fog
Games like Through the fog include Poppy Playtime, Little Nightmares II, Phasmophobia, SOMA, and MiSide. We matched them by the tags players give Through the fog on Steam (Horror, Psychological Horror, Thriller, Detective, and Dark): closest matches first, and among equally close ones the better-known games.

Poppy Playtime
Shared: Horror · Psychological Horror · Dark

Little Nightmares II
Shared: Horror · Psychological Horror · Dark

Phasmophobia
Shared: Horror · Psychological Horror · Dark

SOMA
Shared: Horror · Psychological Horror · Dark

MiSide
Shared: Psychological Horror · Horror · Story Rich

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

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

Detention
Shared: Horror · Psychological Horror · Adventure

Danganronpa: Trigger Happy Havoc
Shared: Detective · Visual Novel · Psychological Horror

Danganronpa 2: Goodbye Despair
Shared: Detective · Visual Novel · Psychological Horror

Tiny Bunny
Shared: Horror · Visual Novel · Psychological Horror

Little Nightmares
Shared: Horror · Dark · Adventure

Mouthwashing
Shared: Horror · Psychological Horror · Story Rich

Fran Bow
Shared: Psychological Horror · Horror · Story Rich

Outlast
Shared: Horror · Psychological Horror · First-Person

Layers of Fear (2016)
Shared: Horror · Psychological Horror · First-Person

Darkwood
Shared: Horror · Psychological Horror · Dark

Outlast 2
Shared: Horror · Psychological Horror · Dark

Firework
Shared: Horror · Psychological Horror · Thriller

Danganronpa V3: Killing Harmony
Shared: Detective · Visual Novel · Psychological Horror

Five Nights at Freddy's: Security Breach
Shared: Horror · First-Person · Adventure

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

Alan Wake
Shared: Horror · Thriller · Psychological Horror

Still Wakes the Deep
Shared: Horror · Psychological Horror · Dark