Games like KARMA: The Dark World
Games like KARMA: The Dark World include SOMA, Layers of Fear (2016), Firewatch, Mouthwashing, and What Remains of Edith Finch. We matched them by the tags players give KARMA: The Dark World on Steam (Walking Simulator, Psychological Horror, Horror, First-Person, and Atmospheric): closest matches first, and among equally close ones the better-known games.

SOMA
Shared: Psychological Horror · Horror · Atmospheric

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

Firewatch
Shared: Walking Simulator · Atmospheric · First-Person

Mouthwashing
Shared: Psychological Horror · Horror · Atmospheric

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

Still Wakes the Deep
Shared: Psychological Horror · Horror · Walking Simulator

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

MiSide
Shared: Psychological Horror · Horror · First-Person

Outlast
Shared: Horror · First-Person · Psychological Horror

The Beginner's Guide
Shared: Walking Simulator · First-Person · Atmospheric

ROUTINE
Shared: Psychological Horror · Sci-fi · Atmospheric

>observer_
Shared: Psychological Horror · Horror · Atmospheric

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

Lethal Company
Shared: Horror · First-Person · Psychological Horror

Blair Witch
Shared: Horror · Psychological Horror · First-Person

The Park®
Shared: Psychological Horror · Walking Simulator · Horror

SILENT HILL 2
Shared: Psychological Horror · Horror · Atmospheric

Outlast 2
Shared: Psychological Horror · Horror · First-Person

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

Resident Evil 7 Biohazard
Shared: Horror · First-Person · Singleplayer

Visage
Shared: Psychological Horror · Horror · First-Person

Poppy Playtime
Shared: Horror · First-Person · Singleplayer

BioShock™ Remastered
Shared: Horror · Atmospheric · First-Person

The Talos Principle
Shared: First-Person · Sci-fi · Philosophical