Games like Hotel 188
Games like Hotel 188 include POOLS, What Remains of Edith Finch, Firewatch, Layers of Fear (2016), and Dreamcore. We matched them by the tags players give Hotel 188 on Steam (Psychological Horror, Walking Simulator, Atmospheric, First-Person, and Realistic): closest matches first, and among equally close ones the better-known games.

POOLS
Shared: Psychological Horror · Walking Simulator · Atmospheric

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

Firewatch
Shared: Atmospheric · Walking Simulator · Adventure

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

Dreamcore
Shared: Walking Simulator · Psychological Horror · First-Person

SOMA
Shared: Psychological Horror · Atmospheric · First-Person

Outlast
Shared: First-Person · Psychological Horror · Atmospheric

Visage
Shared: Psychological Horror · First-Person · Atmospheric

Scanner Sombre
Shared: Walking Simulator · Atmospheric · Psychological Horror

Liminalcore
Shared: Psychological Horror · Walking Simulator · Atmospheric

The Witness
Shared: First-Person · Atmospheric · Walking Simulator

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

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

Millennium Dream
Shared: Walking Simulator · Adventure · Psychological Horror

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

The Cabin Factory
Shared: Psychological Horror · Walking Simulator · Atmospheric

ROUTINE
Shared: Psychological Horror · Atmospheric · Adventure

The Exit 8
Shared: Walking Simulator · Psychological Horror · First-Person

Platform 8
Shared: Psychological Horror · Walking Simulator · Adventure

Welcome to Kowloon
Shared: Psychological Horror · Atmospheric · Walking Simulator

INFRA
Shared: Atmospheric · Walking Simulator · First-Person

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

Journey
Shared: Atmospheric · Adventure · Walking Simulator

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