Games like Organ Quarter
Games like Organ Quarter include Resident Evil 7 Biohazard, Outlast, SOMA, Darkwood, and Outlast 2. We matched them by the tags players give Organ Quarter on Steam (Survival Horror, Psychological Horror, Action-Adventure, Atmospheric, and Exploration): closest matches first, and among equally close ones the better-known games.

Resident Evil 7 Biohazard
Shared: Survival Horror · Horror · Atmospheric

Outlast
Shared: Survival Horror · Psychological Horror · Atmospheric

SOMA
Shared: Psychological Horror · Atmospheric · Survival Horror

Darkwood
Shared: Survival Horror · Psychological Horror · Horror

Outlast 2
Shared: Psychological Horror · Survival Horror · Horror

SILENT HILL f
Shared: Psychological Horror · Survival Horror · Horror

Lethal Company
Shared: Survival Horror · Horror · Psychological Horror

Dead Space
Shared: Survival Horror · Horror · Psychological Horror

Resident Evil Village
Shared: Survival Horror · Horror · Action

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

SILENT HILL 2
Shared: Psychological Horror · Survival Horror · Atmospheric

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

The Evil Within 2
Shared: Survival Horror · Psychological Horror · Horror

SILENT HILL: Townfall
Shared: Psychological Horror · Survival Horror · Horror

The Beast Inside
Shared: Survival Horror · Horror · Psychological Horror

Visage
Shared: Psychological Horror · Survival Horror · Horror

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

Poppy Playtime
Shared: Survival Horror · Horror · Psychological Horror

The Forest
Shared: Survival Horror · Horror · Adventure

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

Five Nights at Freddy's: Secret of the Mimic
Shared: Horror · Survival Horror · Adventure

Dead by Daylight
Shared: Survival Horror · Horror · Psychological Horror

Five Nights at Freddy's: Security Breach
Shared: Survival Horror · Horror · Exploration

Resident Evil 2
Shared: Survival Horror · Horror · Atmospheric