Games like Looking Glass
Games like Looking Glass include Outlast, Garten of Banban, Resident Evil 7 Biohazard, Poppy Playtime, and Five Nights at Freddy's. We matched them by the tags players give Looking Glass on Steam (Indie, Horror, Psychological Horror, First-Person, and Survival Horror): closest matches first, and among equally close ones the better-known games.

Outlast
Shared: Horror · First-Person · Psychological Horror

Garten of Banban
Shared: Horror · VR · Psychological Horror

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

Poppy Playtime
Shared: Horror · First-Person · Singleplayer

Five Nights at Freddy's
Shared: Horror · Indie · Psychological Horror

Outlast 2
Shared: Horror · Psychological Horror · First-Person

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

Phasmophobia
Shared: Horror · Psychological Horror · VR

DEVOUR
Shared: Horror · Survival Horror · Psychological Horror

Five Nights at Freddy's 2
Shared: Horror · Psychological Horror · Survival Horror

Slender: The Arrival
Shared: Horror · Indie · First-Person

FIVE NIGHTS AT FREDDY'S: HELP WANTED
Shared: VR · Horror · First-Person

SOMA
Shared: Horror · Psychological Horror · Atmospheric

Visage
Shared: Horror · Psychological Horror · Survival Horror

Lethal Company
Shared: Horror · First-Person · Survival Horror

Layers of Fear (2016)
Shared: Horror · Psychological Horror · Indie

MiSide
Shared: Psychological Horror · Horror · First-Person

Amnesia: The Dark Descent
Shared: Horror · Psychological Horror · Survival Horror

From The Darkness
Shared: Horror · Indie · Psychological Horror

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

No, I'm not a Human
Shared: Horror · Indie · Psychological Horror

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

Five Nights at Freddy's 4
Shared: Horror · Survival Horror · First-Person

Five Nights at Freddy's 3
Shared: Horror · Survival Horror · Indie