Games like Somnus Corporation
Games like Somnus Corporation include SOMA, MiSide, Mouthwashing, Detention, and Outer Wilds. We matched them by the tags players give Somnus Corporation on Steam (Horror, Psychological Horror, Surreal, Thriller, and Sci-fi): closest matches first, and among equally close ones the better-known games.

SOMA
Shared: Horror · Psychological Horror · Sci-fi

MiSide
Shared: Psychological Horror · Horror · Story Rich

Mouthwashing
Shared: Horror · Psychological Horror · Story Rich

Detention
Shared: Horror · Psychological Horror · Atmospheric

Outer Wilds
Shared: Exploration · Story Rich · Atmospheric

Inside the Backrooms
Shared: Horror · Psychological Horror · Puzzle

Lethal Company
Shared: Horror · Psychological Horror · Exploration

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

ROUTINE
Shared: Psychological Horror · Sci-fi · Horror

Little Nightmares II
Shared: Horror · Psychological Horror · Atmospheric

Fran Bow
Shared: Psychological Horror · Horror · Story Rich

Fears to Fathom - Ironbark Lookout
Shared: Horror · Psychological Horror · Thriller

Sally Face - Episode One
Shared: Psychological Horror · Horror · Story Rich

No, I'm not a Human
Shared: Horror · Psychological Horror · Story Rich

Still Wakes the Deep
Shared: Horror · Psychological Horror · Story Rich

Poppy Playtime
Shared: Horror · Psychological Horror · Puzzle

Little Nightmares
Shared: Horror · Atmospheric · Psychological Horror

The Exit 8
Shared: Horror · Psychological Horror · Exploration

Observation
Shared: Horror · Sci-fi · Psychological Horror

Superliminal
Shared: Surreal · Thriller · Psychological Horror

What Remains of Edith Finch
Shared: Story Rich · Atmospheric · Exploration

Firewatch
Shared: Story Rich · Atmospheric · Exploration

In Sound Mind
Shared: Horror · Psychological Horror · Story Rich

SILENT HILL 2
Shared: Horror · Psychological Horror · Story Rich