Games like Silent Threat
Games like Silent Threat include What Remains of Edith Finch, POOLS, Firewatch, Dreamcore, and Blue Prince. We matched them by the tags players give Silent Threat on Steam (Exploration, Psychological Horror, Investigation, Walking Simulator, and 3D): closest matches first, and among equally close ones the better-known games.

What Remains of Edith Finch
Shared: Walking Simulator · Exploration · Atmospheric

POOLS
Shared: Psychological Horror · Walking Simulator · Exploration

Firewatch
Shared: Walking Simulator · Exploration · Atmospheric

Dreamcore
Shared: Exploration · Psychological Horror · Walking Simulator

Blue Prince
Shared: Exploration · Investigation · Mystery

Scanner Sombre
Shared: Exploration · Walking Simulator · Psychological Horror

The Exit 8
Shared: Exploration · Walking Simulator · Psychological Horror

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

Amnesia: A Machine For Pigs
Shared: Walking Simulator · Psychological Horror · Exploration

Platform 8
Shared: Psychological Horror · Walking Simulator · Exploration

The Witness
Shared: Exploration · First-Person · Walking Simulator

SOMA
Shared: Psychological Horror · Exploration · Atmospheric

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

Quern - Undying Thoughts
Shared: Exploration · Walking Simulator · Adventure

The Long Dark
Shared: Exploration · First-Person · Atmospheric

Outer Wilds
Shared: Exploration · Mystery · Adventure

Dreamcore: Rabbit Hole
Shared: Exploration · Psychological Horror · Walking Simulator

Psalm 5:9-13
Shared: Psychological Horror · Exploration · Walking Simulator

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

[Chillas Art] The Convenience Store
Shared: Psychological Horror · Simulation · Walking Simulator

Journey
Shared: Exploration · Walking Simulator · Atmospheric

Millennium Dream
Shared: Exploration · Walking Simulator · Psychological Horror

Internet Cafe Simulator 2
Shared: Exploration · Simulation · 3D

The Painscreek Killings
Shared: Investigation · Exploration · Walking Simulator