Games like ZahmahreL - Chapter 1
Games like ZahmahreL - Chapter 1 include Phasmophobia, Summer of '58, Fears to Fathom - Ironbark Lookout, Mouthwashing, and Poppy Playtime. We matched them by the tags players give ZahmahreL - Chapter 1 on Steam (Horror, Realistic, Supernatural, Psychological Horror, and Atmospheric): closest matches first, and among equally close ones the better-known games.

Phasmophobia
Shared: Horror · Psychological Horror · Supernatural

Summer of '58
Shared: Horror · Psychological Horror · Atmospheric

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

Mouthwashing
Shared: Horror · Psychological Horror · Atmospheric

Poppy Playtime
Shared: Horror · Psychological Horror · Dark

Outlast
Shared: Horror · Psychological Horror · Atmospheric

SOMA
Shared: Horror · Psychological Horror · Atmospheric

DON'T SCREAM
Shared: Horror · Psychological Horror · Atmospheric

Welcome to Kowloon
Shared: Horror · Psychological Horror · Atmospheric

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

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

The Mortuary Assistant
Shared: Horror · Supernatural · Atmospheric

Visage
Shared: Horror · Psychological Horror · Dark

Sally Face - Episode One
Shared: Horror · Psychological Horror · Dark

Subliminal
Shared: Realistic · Psychological Horror · Horror

Psalm 5:9-13
Shared: Horror · Psychological Horror · Atmospheric

Firewatch
Shared: Atmospheric · Walking Simulator · Adventure

The Lightkeeper
Shared: Horror · Psychological Horror · Atmospheric

From The Darkness
Shared: Horror · Psychological Horror · Dark

What Remains of Edith Finch
Shared: Atmospheric · Walking Simulator · Mystery

ROUTINE
Shared: Psychological Horror · Atmospheric · Horror

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

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

MiSide
Shared: Psychological Horror · Horror · Atmospheric