Games like Palmyra Orphanage
Games like Palmyra Orphanage include Outlast, Outlast 2, Poppy Playtime, Amnesia: The Dark Descent, and Resident Evil 7 Biohazard. We matched them by the tags players give Palmyra Orphanage on Steam (Horror, Violent, Indie, Psychological Horror, and Survival Horror): closest matches first, and among equally close ones the better-known games.

Outlast
Shared: Horror · Survival Horror · Psychological Horror

Outlast 2
Shared: Horror · Psychological Horror · Survival Horror

Poppy Playtime
Shared: Horror · Survival Horror · Singleplayer

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

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

SOMA
Shared: Horror · Psychological Horror · Dark

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

Visage
Shared: Horror · Psychological Horror · Survival Horror

Dead by Daylight
Shared: Horror · Survival Horror · Gore

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

Little Nightmares
Shared: Horror · Indie · Dark

Bendy and the Ink Machine
Shared: Horror · First-Person · Survival Horror

Blair Witch
Shared: Horror · Indie · Psychological Horror

Granny
Shared: Horror · Survival Horror · Indie

Scorn
Shared: Horror · Gore · Dark

MADiSON
Shared: Horror · Psychological Horror · Survival Horror

Little Nightmares II
Shared: Horror · Dark · Psychological Horror

DEVOUR
Shared: Horror · Survival Horror · Psychological Horror

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

The Beast Inside
Shared: Horror · Survival Horror · First-Person

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

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

Buckshot Roulette
Shared: Horror · Dark · Indie

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