Games like Hotelnomaly
Games like Hotelnomaly include Escape the Backrooms, Backrooms: Escape Together, Lethal Company, Visage, and Platform 8. We matched them by the tags players give Hotelnomaly on Steam (Realistic, Survival Horror, Psychological Horror, Walking Simulator, and Horror): closest matches first, and among equally close ones the better-known games.

Escape the Backrooms
Shared: Horror · Psychological Horror · Survival Horror

Backrooms: Escape Together
Shared: Psychological Horror · Survival Horror · Horror

Lethal Company
Shared: Survival Horror · Horror · Psychological Horror

Visage
Shared: Survival Horror · Psychological Horror · Horror

Platform 8
Shared: Psychological Horror · Walking Simulator · Adventure

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

The Exit 8
Shared: Walking Simulator · Exploration · Horror

Outlast
Shared: Survival Horror · Horror · Psychological Horror

The Forest
Shared: Horror · Survival Horror · Adventure

SOMA
Shared: Psychological Horror · Horror · Survival Horror

The Beast Inside
Shared: Survival Horror · Horror · Adventure

Darkwood
Shared: Survival Horror · Horror · Psychological Horror

Who's at the door?
Shared: Walking Simulator · Horror · Adventure

Inside the Backrooms
Shared: Survival Horror · Horror · Psychological Horror

Five Nights at Freddy's: Security Breach
Shared: Survival Horror · Horror · Exploration

The Complex: Expedition
Shared: Realistic · Horror · Psychological Horror

Poppy Playtime
Shared: Horror · Survival Horror · Psychological Horror

Slender: The Arrival
Shared: Survival Horror · Horror · Psychological Horror

The Outlast Trials
Shared: Survival Horror · Horror · Psychological Horror

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

SILENT HILL 2
Shared: Psychological Horror · Survival Horror · Horror

Ready or Not
Shared: Realistic · Horror · Psychological Horror

Resident Evil Requiem
Shared: Survival Horror · Horror · Realistic

September 7th
Shared: Horror · Psychological Horror · Walking Simulator