Games like Dead Seater
Games like Dead Seater include Darkwood, Outlast, SILENT HILL f, SOMA, and A Plague Tale: Requiem. We matched them by the tags players give Dead Seater on Steam (Action, Horror, Adventure, Survival Horror, and Atmospheric): closest matches first, and among equally close ones the better-known games.

Darkwood
Shared: Horror · Adventure · Survival Horror

Outlast
Shared: Horror · Survival Horror · Atmospheric

SILENT HILL f
Shared: Horror · Survival Horror · Action

SOMA
Shared: Horror · Atmospheric · Survival Horror

A Plague Tale: Requiem
Shared: Action · Adventure · Exploration

SILENT HILL: Townfall
Shared: Horror · Action · Adventure

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

Resident Evil Requiem
Shared: Horror · Survival Horror · Action

Lethal Company
Shared: Horror · Survival Horror · Exploration

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

SILENT HILL 2
Shared: Horror · Survival Horror · Atmospheric

Resident Evil 4
Shared: Action · Horror · Survival Horror

The Forest
Shared: Horror · Adventure · Survival Horror

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

Inside the Backrooms
Shared: Horror · Survival Horror · Adventure

Pyromaniac
Shared: Action · Adventure · Horror

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

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

Little Nightmares
Shared: Horror · Adventure · Atmospheric

The Beast Inside
Shared: Horror · Adventure · Action

Slender: The Arrival
Shared: Horror · Survival Horror · Atmospheric

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

ROUTINE
Shared: Atmospheric · Adventure · Horror

Alan Wake
Shared: Action · Horror · Adventure