Games like UFOPHILIA
Games like UFOPHILIA include Phasmophobia, Poppy Playtime, Demonologist, Outlast, and MiSide. We matched them by the tags players give UFOPHILIA on Steam (Horror, Psychological Horror, Supernatural, First-Person, and Adventure): closest matches first, and among equally close ones the better-known games.

Phasmophobia
Shared: Horror · Psychological Horror · Supernatural

Poppy Playtime
Shared: Horror · First-Person · Psychological Horror

Demonologist
Shared: Horror · Psychological Horror · First-Person

Outlast
Shared: Horror · First-Person · Psychological Horror

MiSide
Shared: Psychological Horror · Horror · First-Person

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

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

The Mortuary Assistant
Shared: Horror · Supernatural · First-Person

Escape the Backrooms
Shared: Horror · Psychological Horror · First-Person

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

Buckshot Roulette
Shared: Horror · First-Person · Dark

Blair Witch
Shared: Horror · Psychological Horror · Adventure

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

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

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

Visage
Shared: Horror · Psychological Horror · First-Person

Dollmare
Shared: Horror · Psychological Horror · Simulation

Layers of Fear (2016)
Shared: Horror · Psychological Horror · First-Person

No, I'm not a Human
Shared: Horror · Psychological Horror · First-Person

Pacify
Shared: Horror · Psychological Horror · First-Person

Dread Flats
Shared: Horror · Psychological Horror · Supernatural

Little Nightmares II
Shared: Horror · Adventure · Psychological Horror

SOMA
Shared: Horror · Psychological Horror · Dark

Supernormal
Shared: Horror · Psychological Horror · First-Person