Games like Doll Impostor
Games like Doll Impostor include Escape the Backrooms, Buckshot Roulette, Ready or Not, Outlast, and The Beast Inside. We matched them by the tags players give Doll Impostor on Steam (Strategy, Action, Adventure, Walking Simulator, and Horror): closest matches first, and among equally close ones the better-known games.

Escape the Backrooms
Shared: Horror · Psychological Horror · Adventure

Buckshot Roulette
Shared: Strategy · Horror · First-Person

Ready or Not
Shared: Horror · Action · Realistic

Outlast
Shared: Horror · First-Person · Psychological Horror

The Beast Inside
Shared: Adventure · Horror · Action

Resident Evil Requiem
Shared: Action · Horror · First-Person

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

Fears to Fathom® - Scratch Creek
Shared: Horror · Adventure · Walking Simulator

Layers of Fear (2016)
Shared: Horror · Walking Simulator · Psychological Horror

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

Poppy Playtime
Shared: Horror · Singleplayer · First-Person

The Death | Thần Trùng
Shared: Horror · Adventure · Psychological Horror

[Chillas Art] Stigmatized Property
Shared: Adventure · Horror · Action

Dark Deception
Shared: Horror · Action · Psychological Horror

Bendy and the Dark Revival
Shared: Action · Horror · Adventure

Five Nights at Freddy's: Security Breach
Shared: Horror · Singleplayer · Adventure

Zort
Shared: Horror · Action · Psychological Horror

Emily Wants To Play
Shared: Horror · Action · Strategy

MiSide
Shared: Psychological Horror · Horror · 3D

Phasmophobia
Shared: Horror · Psychological Horror · First-Person

The Outlast Trials
Shared: Horror · Action · Psychological Horror

Slender: The Arrival
Shared: Horror · First-Person · Walking Simulator

Grand Theft Auto V Legacy
Shared: Action · Adventure · First-Person

The Forest
Shared: Horror · Adventure · Action