Games like SilentDarkness
Games like SilentDarkness include POOLS, September 7th, The Exit 8, Scanner Sombre, and Layers of Fear (2016). We matched them by the tags players give SilentDarkness on Steam (Psychological Horror, First-Person, Realistic, Action, and Atmospheric): closest matches first, and among equally close ones the better-known games.

POOLS
Shared: Psychological Horror · Realistic · Atmospheric

September 7th
Shared: Psychological Horror · First-Person · Walking Simulator

The Exit 8
Shared: Psychological Horror · Walking Simulator · First-Person

Scanner Sombre
Shared: First-Person · Psychological Horror · Atmospheric

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

What Remains of Edith Finch
Shared: First-Person · Atmospheric · Walking Simulator

Summer of '58
Shared: Psychological Horror · Atmospheric · First-Person

Platform 8
Shared: Psychological Horror · Simulation · Walking Simulator

MiSide
Shared: Psychological Horror · First-Person · Atmospheric

Backrooms: Escape Together
Shared: Psychological Horror · First-Person · Atmospheric

Crime Scene Cleaner
Shared: First-Person · Simulation · Atmospheric

Garten of Banban
Shared: First-Person · Psychological Horror · Puzzle

SOMA
Shared: Psychological Horror · Atmospheric · First-Person

Outlast
Shared: First-Person · Psychological Horror · Atmospheric

DON'T SCREAM
Shared: Psychological Horror · First-Person · Atmospheric

In Sound Mind
Shared: Psychological Horror · Action · First-Person

Ready or Not
Shared: Realistic · First-Person · Psychological Horror

ROUTINE
Shared: Psychological Horror · Atmospheric · First-Person

April 24th
Shared: Psychological Horror · Simulation · Walking Simulator

The Complex: Expedition
Shared: Realistic · Psychological Horror · Action

Resident Evil 7 Biohazard
Shared: First-Person · Psychological Horror · Atmospheric

Amnesia: A Machine For Pigs
Shared: First-Person · Psychological Horror · Atmospheric

Arma 3
Shared: Action · Realistic · First-Person

Father's Day
Shared: Psychological Horror · Simulation · Walking Simulator