Games like Nietzsche's Shadow
Games like Nietzsche's Shadow include SOMA, Firewatch, What Remains of Edith Finch, Lethal Company, and ROUTINE. We matched them by the tags players give Nietzsche's Shadow on Steam (Exploration, Adventure, Philosophical, Interactive Fiction, and Psychological Horror): closest matches first, and among equally close ones the better-known games.

SOMA
Shared: Psychological Horror · Exploration · Atmospheric

Firewatch
Shared: Adventure · Exploration · First-Person

What Remains of Edith Finch
Shared: Exploration · Adventure · First-Person

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

ROUTINE
Shared: Psychological Horror · Adventure · Cinematic

Outer Wilds
Shared: Exploration · Adventure · Atmospheric

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

A Plague Tale: Requiem
Shared: Adventure · Exploration · Cinematic

The Talos Principle
Shared: Philosophical · First-Person · Exploration

Fears to Fathom - Ironbark Lookout
Shared: Psychological Horror · Exploration · Adventure

KARMA: The Dark World
Shared: Psychological Horror · First-Person · Philosophical

Fallout 4
Shared: Exploration · Adventure · First-Person

Gone Home
Shared: Exploration · Short · First-Person

Still Wakes the Deep
Shared: Psychological Horror · First-Person · Adventure

The Beginner's Guide
Shared: Adventure · Short · First-Person

Iron Lung
Shared: Psychological Horror · Short · Atmospheric

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

No Man's Sky
Shared: Exploration · Adventure · Sci-fi

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

Subnautica 2
Shared: Exploration · Adventure · First-Person

Valley
Shared: Adventure · Exploration · First-Person

Outlast
Shared: First-Person · Psychological Horror · Adventure

Visage
Shared: Psychological Horror · Adventure · First-Person

POOLS
Shared: Exploration · Psychological Horror · First-Person