Games like The Waiting Room
Games like The Waiting Room include People Playground, Scorn, Welcome to the Game, Autopsy Simulator, and Clive Barker's Hellraiser: Revival. We matched them by the tags players give The Waiting Room on Steam (Indie, Simulation, Gore, Violent, and Sexual Content): closest matches first, and among equally close ones the better-known games.

People Playground
Shared: Gore · Violent · Simulation

Scorn
Shared: Gore · Sexual Content · Horror

Welcome to the Game
Shared: Simulation · Indie · Horror

Autopsy Simulator
Shared: Indie · Simulation · Gore

Clive Barker's Hellraiser: Revival
Shared: Gore · Sexual Content · Nudity

Granny Simulator
Shared: Simulation · Indie · Violent

Outlast 2
Shared: Gore · Horror · Violent

A Dump in the Dark
Shared: Sexual Content · Gore · Simulation

Welcome to the Game II
Shared: Indie · Simulation · Horror

OMON Simulator
Shared: Simulation · Indie · Nudity

CARRION
Shared: Gore · Indie · Violent

Internet Cafe Simulator
Shared: Indie · Simulation · Sexual Content

Dead by Daylight
Shared: Gore · Horror · Violent

LEWDAPOCALYPSE Hentai Evil
Shared: Sexual Content · Nudity · Indie

Lucius
Shared: Gore · Indie · Horror

Lobotomy Corporation | Monster Management Simulation
Shared: Simulation · Gore · Indie

Viscera Cleanup Detail
Shared: Simulation · Gore · Indie

Viscera Cleanup Detail: Santa's Rampage
Shared: Simulation · Gore · Indie

Hotline Miami
Shared: Indie · Violent · Gore

Cockroach Simulator
Shared: Indie · Simulation · Nudity

[Chillas Art] Aka Manto
Shared: Indie · Gore · Violent

Tricolour Lovestory
Shared: Sexual Content · Simulation · Nudity

DOKA 2 KISHKI EDITION
Shared: Gore · Violent · Indie

Happy Room
Shared: Simulation · Gore · Violent