Games like THE ドア
Games like THE ドア include Poppy Playtime, Ultimate Custom Night, Dark Deception, VERGE:Lost chapter, and Five Nights at Freddy's. We matched them by the tags players give THE ドア on Steam (Walking Simulator, Singleplayer, Horror, Simulation, and 3D Platformer): closest matches first, and among equally close ones the better-known games.

Poppy Playtime
Shared: Singleplayer · Horror · Free to Play

Ultimate Custom Night
Shared: Singleplayer · Horror · Free to Play

Dark Deception
Shared: Horror · Singleplayer · Free to Play

VERGE:Lost chapter
Shared: Walking Simulator · Horror · Simulation

Five Nights at Freddy's
Shared: Singleplayer · Horror · Indie

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

Firewatch
Shared: Walking Simulator · Singleplayer · First-Person

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

September 7th
Shared: Walking Simulator · Horror · 3D Platformer

Find Yourself
Shared: Horror · Walking Simulator · Simulation

Outlast
Shared: Horror · First-Person · Singleplayer

Investigator
Shared: Horror · Walking Simulator · Simulation

Buckshot Roulette
Shared: Horror · Singleplayer · First-Person

Slender: The Arrival
Shared: Horror · First-Person · Singleplayer

Five Nights at Freddy's: Security Breach
Shared: Singleplayer · Horror · First-Person

Bendy and the Ink Machine
Shared: Horror · Singleplayer · First-Person

What Remains of Edith Finch
Shared: Walking Simulator · Singleplayer · First-Person

Amnesia: A Machine For Pigs
Shared: Walking Simulator · Horror · First-Person

Among the Sleep - Enhanced Edition
Shared: Horror · Singleplayer · Walking Simulator

Locked Up
Shared: Horror · Simulation · Singleplayer

Killer Frequency
Shared: Horror · Walking Simulator · Simulation

Visage
Shared: Horror · Singleplayer · First-Person

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

The Hat Man: Shadow Ward
Shared: Horror · First-Person · Singleplayer