Games like Silent Breach
Games like Silent Breach include Lethal Company, SOMA, Iron Lung, Outer Wilds, and Inside the Backrooms. We matched them by the tags players give Silent Breach on Steam (Horror, Atmospheric, Exploration, Sci-fi, and Psychological Horror): closest matches first, and among equally close ones the better-known games.

Lethal Company
Shared: Horror · Exploration · Psychological Horror

SOMA
Shared: Horror · Atmospheric · Psychological Horror

Iron Lung
Shared: Horror · Atmospheric · Psychological Horror

Outer Wilds
Shared: Exploration · Atmospheric · Mystery

Inside the Backrooms
Shared: Horror · Psychological Horror · Exploration

Firewatch
Shared: Atmospheric · Exploration · Mystery

Outlast
Shared: Horror · Atmospheric · Psychological Horror

What Remains of Edith Finch
Shared: Atmospheric · Exploration · Mystery

DREDGE
Shared: Exploration · Atmospheric · Horror

Amnesia: A Machine For Pigs
Shared: Horror · Atmospheric · Exploration

Subnautica 2
Shared: Horror · Exploration · Atmospheric

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

Pacify
Shared: Horror · Psychological Horror · Exploration

Alien: Isolation
Shared: Horror · Sci-fi · Atmospheric

Nuclear Nightmare
Shared: Horror · Atmospheric · Psychological Horror

Prey
Shared: Sci-fi · Horror · Atmospheric

Escape the Backrooms
Shared: Horror · Psychological Horror · Exploration

Poppy Playtime
Shared: Horror · Psychological Horror · Mystery

ROUTINE
Shared: Sci-fi · Atmospheric · Psychological Horror

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

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

SILENT HILL 2
Shared: Horror · Psychological Horror · Atmospheric

[Chillas Art] The Convenience Store
Shared: Horror · Psychological Horror · Atmospheric

Firework
Shared: Horror · Atmospheric · Psychological Horror