Games like Walls that Watch
Games like Walls that Watch include Outlast, Five Nights at Freddy's: Security Breach, METRO 2033 Redux, METRO Last Light Redux, and Alien: Isolation. We matched them by the tags players give Walls that Watch on Steam (Stealth, Horror, Retro, Singleplayer, and Atmospheric): closest matches first, and among equally close ones the better-known games.

Outlast
Shared: Horror · Atmospheric · First-Person

Five Nights at Freddy's: Security Breach
Shared: Horror · Singleplayer · Stealth

METRO 2033 Redux
Shared: Horror · Atmospheric · Singleplayer

METRO Last Light Redux
Shared: Atmospheric · Horror · Singleplayer

Alien: Isolation
Shared: Horror · Stealth · Atmospheric

Amnesia: The Bunker
Shared: Horror · Stealth · Atmospheric

Thief
Shared: Stealth · Singleplayer · First-Person

Metro Exodus
Shared: Singleplayer · Horror · Atmospheric

Dishonored
Shared: Stealth · First-Person · Singleplayer

Bendy and the Dark Revival
Shared: Horror · Singleplayer · First-Person

Little Nightmares
Shared: Horror · Atmospheric · Singleplayer

Dishonored 2
Shared: Stealth · Singleplayer · First-Person

Resident Evil 7 Biohazard
Shared: Horror · Singleplayer · First-Person

Resident Evil Village
Shared: Horror · Singleplayer · First-Person

Baldi's Basics Plus
Shared: Horror · Stealth · Retro

Five Nights at Freddy's: Secret of the Mimic
Shared: Horror · First-Person · Action

Poppy Playtime
Shared: Horror · Singleplayer · First-Person

Lunacid
Shared: Retro · First-Person · Atmospheric

Mouthwashing
Shared: Horror · Retro · Atmospheric

MiSide
Shared: Horror · Singleplayer · First-Person

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

Little Nightmares II
Shared: Horror · Singleplayer · Atmospheric

The Outlast Trials
Shared: Horror · Stealth · First-Person

Garten of Banban
Shared: Horror · Singleplayer · First-Person