Games like Hollow Warden
Games like Hollow Warden include L.A. Noire, Murdered: Soul Suspect, Sherlock Holmes: The Devil's Daughter, Phasmophobia, and Alan Wake. We matched them by the tags players give Hollow Warden on Steam (Detective, Crime, Noir, Psychological Horror, and Third Person): closest matches first, and among equally close ones the better-known games.

L.A. Noire
Shared: Detective · Crime · Noir

Murdered: Soul Suspect
Shared: Detective · Crime · Horror

Sherlock Holmes: The Devil's Daughter
Shared: Detective · Crime · Story Rich

Phasmophobia
Shared: Psychological Horror · Horror · Detective

Alan Wake
Shared: Third Person · Horror · Story Rich

Sherlock Holmes: Crimes and Punishments
Shared: Detective · Crime · Investigation

SILENT HILL 2
Shared: Psychological Horror · Horror · Story Rich

Unheard - Voices of Crime
Shared: Detective · Crime · Story Rich

Sally Face - Episode One
Shared: Psychological Horror · Story Rich · Horror

Max Payne
Shared: Noir · Story Rich · Third Person

Duck Detective: The Secret Salami
Shared: Detective · Casual · Noir

MiSide
Shared: Psychological Horror · Story Rich · Horror

Supernatural
Shared: Detective · Psychological Horror · Crime

The Wolf Among Us
Shared: Detective · Story Rich · Noir

Batman™: Arkham Knight
Shared: Detective · Third Person · Action

The Evil Within 2
Shared: Psychological Horror · Horror · Story Rich

Grand Theft Auto V Legacy
Shared: Crime · Third Person · Action

This Bed We Made
Shared: Third Person · Story Rich · Noir

Mafia II (Classic)
Shared: Crime · Third Person · Story Rich

Little Nightmares
Shared: Horror · Atmospheric · Psychological Horror

Fears to Fathom - Woodbury Getaway
Shared: Psychological Horror · Horror · Casual

Sherlock Holmes Chapter One
Shared: Detective · Crime · Story Rich

SOMA
Shared: Psychological Horror · Horror · Story Rich

Fears to Fathom - Carson House
Shared: Psychological Horror · Crime · Horror