Games like Paranormal Observation
Games like Paranormal Observation include Phasmophobia, Poppy Playtime, Demonologist, Sally Face - Episode One, and Pacify. We matched them by the tags players give Paranormal Observation on Steam (Horror, Demons, Psychological Horror, Casual, and Detective): closest matches first, and among equally close ones the better-known games.

Phasmophobia
Shared: Horror · Psychological Horror · Demons

Poppy Playtime
Shared: Horror · Psychological Horror · Puzzle

Demonologist
Shared: Horror · Psychological Horror · Demons

Sally Face - Episode One
Shared: Psychological Horror · Horror · Dark

Pacify
Shared: Horror · Psychological Horror · Demons

The Exit 8
Shared: Horror · Psychological Horror · Immersive Sim

Cube Escape Collection
Shared: Horror · Psychological Horror · Puzzle

Ghost Exorcism INC.
Shared: Horror · Psychological Horror · Investigation

The Room Two
Shared: Horror · Puzzle · Mystery

Strange Horticulture
Shared: Detective · Puzzle · Dark

SIMULACRA
Shared: Horror · Detective · Psychological Horror

Pony Island
Shared: Psychological Horror · Demons · Horror

Firework
Shared: Horror · Psychological Horror · Puzzle

Conrad Stevenson's Paranormal P.I.
Shared: Horror · Psychological Horror · Demons

Desktop Explorer
Shared: Psychological Horror · Detective · Investigation

SOMA
Shared: Horror · Psychological Horror · Dark

Fran Bow
Shared: Psychological Horror · Horror · Puzzle

The Bathhouse Restored Edition
Shared: Horror · Psychological Horror · Demons

The Painscreek Killings
Shared: Detective · Horror · Investigation

Inside the Backrooms
Shared: Horror · Psychological Horror · Puzzle

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

The Operator
Shared: Detective · Investigation · Immersive Sim

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

Unheard - Voices of Crime
Shared: Detective · Mystery · Horror