Games like blis3:Phenomena
Games like blis3:Phenomena include Phasmophobia, Demonologist, Mouthwashing, Buckshot Roulette, and Poppy Playtime. We matched them by the tags players give blis3:Phenomena on Steam (Psychological Horror, Horror, Psychological, Thriller, and Realistic): closest matches first, and among equally close ones the better-known games.

Phasmophobia
Shared: Horror · Psychological Horror · Dark

Demonologist
Shared: Horror · Psychological Horror · Dark

Mouthwashing
Shared: Psychological Horror · Horror · Psychological

Buckshot Roulette
Shared: Horror · Dark · Psychological

Poppy Playtime
Shared: Horror · Psychological Horror · Dark

Summer of '58
Shared: Horror · Psychological Horror · Thriller

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

iBLiS
Shared: Psychological Horror · Horror · Psychological

Pacify
Shared: Horror · Psychological Horror · Dark

Subliminal
Shared: Psychological Horror · Realistic · Horror

Outlast
Shared: Horror · Psychological Horror · First-Person

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

MiSide
Shared: Psychological Horror · Horror · First-Person

[Chillas Art] The Convenience Store
Shared: Horror · Psychological Horror · Psychological

Visage
Shared: Psychological Horror · Horror · Dark

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

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

Superliminal
Shared: Psychological · Surreal · Thriller

Fran Bow
Shared: Psychological Horror · Horror · Dark

The Mortuary Assistant
Shared: Horror · Demons · Surreal

CloverPit
Shared: Psychological Horror · Horror · Psychological

Outlast 2
Shared: Psychological Horror · Horror · Dark

Ready or Not
Shared: Realistic · Horror · Psychological Horror

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