Games like Six nights to die
Games like Six nights to die include Outlast, Phasmophobia, SOMA, Visage, and Poppy Playtime. We matched them by the tags players give Six nights to die on Steam (Adventure, Cooking, Horror, Walking Simulator, and Psychological Horror): closest matches first, and among equally close ones the better-known games.

Outlast
Shared: Horror · First-Person · Psychological Horror

Phasmophobia
Shared: Horror · Psychological Horror · First-Person

SOMA
Shared: Horror · Psychological Horror · Dark

Visage
Shared: Horror · Psychological Horror · Adventure

Poppy Playtime
Shared: Horror · First-Person · Psychological Horror

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

Escape the Backrooms
Shared: Horror · Psychological Horror · Adventure

Blair Witch
Shared: Adventure · Horror · Psychological Horror

Darkwood
Shared: Adventure · Horror · Psychological Horror

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

Slender: The Arrival
Shared: Horror · First-Person · Psychological Horror

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

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

Pacify
Shared: Horror · Psychological Horror · First-Person

The Beast Inside
Shared: Adventure · Horror · First-Person

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

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

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

The Forest
Shared: Horror · Adventure · First-Person

Resident Evil Village
Shared: Horror · First-Person · Survival Horror

Amnesia: The Dark Descent
Shared: Horror · Psychological Horror · First-Person

Firewatch
Shared: Adventure · Walking Simulator · First-Person

Inside the Backrooms
Shared: Horror · Adventure · Psychological Horror

Demonologist
Shared: Horror · Psychological Horror · First-Person