Games like Blank Frame
Games like Blank Frame include Buckshot Roulette, Phasmophobia, Iron Lung, No, I'm not a Human, and Poppy Playtime. We matched them by the tags players give Blank Frame on Steam (Horror, First-Person, Psychological, 3D, and Psychedelic): closest matches first, and among equally close ones the better-known games.

Buckshot Roulette
Shared: Horror · First-Person · Psychological

Phasmophobia
Shared: Horror · First-Person · Investigation

Iron Lung
Shared: Horror · First-Person · Atmospheric

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

Poppy Playtime
Shared: Horror · First-Person · Dark

Mouthwashing
Shared: Horror · Psychological · Atmospheric

Lethal Company
Shared: Horror · First-Person · Atmospheric

Outlast
Shared: Horror · First-Person · Atmospheric

MiSide
Shared: Horror · First-Person · 3D

Garten of Banban
Shared: Horror · First-Person · 3D

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

Milk outside a bag of milk outside a bag of milk
Shared: Psychedelic · Psychological · Pixel Graphics

Summer of '58
Shared: Horror · First-Person · Psychological

Demonologist
Shared: Horror · First-Person · Investigation

CloverPit
Shared: First-Person · Horror · 3D

Lucid Blocks
Shared: Psychedelic · Horror · First-Person

Species: Unknown
Shared: Horror · First-Person · Aliens

Escape the Backrooms
Shared: Horror · First-Person · 3D

Amanda the Adventurer
Shared: Horror · First-Person · 3D

Lost in Vivo
Shared: Horror · Psychological · First-Person

September 7th
Shared: Horror · First-Person · 3D

Milk inside a bag of milk inside a bag of milk
Shared: Horror · Psychological · Abstract

Outlast 2
Shared: Horror · First-Person · Atmospheric

MOLE
Shared: Horror · First-Person · Psychedelic