Games like Red Door or Blue Door?
Games like Red Door or Blue Door? include Outlast, Poppy Playtime, Outlast 2, SOMA, and Resident Evil 7 Biohazard. We matched them by the tags players give Red Door or Blue Door? on Steam (Psychological Horror, Survival Horror, Adventure, Horror, and Choices Matter): closest matches first, and among equally close ones the better-known games.

Outlast
Shared: Survival Horror · Horror · Psychological Horror

Poppy Playtime
Shared: Horror · Survival Horror · Psychological Horror

Outlast 2
Shared: Psychological Horror · Survival Horror · Horror

SOMA
Shared: Psychological Horror · Horror · Survival Horror

Resident Evil 7 Biohazard
Shared: Survival Horror · Horror · Psychological Horror

Amnesia: The Dark Descent
Shared: Psychological Horror · Horror · Survival Horror

Darkwood
Shared: Survival Horror · Psychological Horror · Horror

The Forest
Shared: Horror · Survival · Adventure

Inside the Backrooms
Shared: Survival Horror · Horror · Psychological Horror

SILENT HILL 2
Shared: Psychological Horror · Survival Horror · Horror

Dead by Daylight
Shared: Survival Horror · Horror · Survival

Resident Evil Village
Shared: Survival Horror · Horror · First-Person

MADiSON
Shared: Psychological Horror · Horror · Survival Horror

Visage
Shared: Psychological Horror · Survival Horror · Horror

The Beast Inside
Shared: Adventure · Horror · Survival Horror

Subnautica 2
Shared: Horror · Survival · Survival Horror

Lethal Company
Shared: Horror · Survival Horror · Psychological Horror

DEVOUR
Shared: Horror · Survival Horror · Psychological Horror

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

The Outlast Trials
Shared: Horror · Survival Horror · Psychological Horror

Slender: The Arrival
Shared: Survival Horror · Horror · Psychological Horror

Mouthwashing
Shared: Psychological Horror · Horror · Atmospheric

The Evil Within 2
Shared: Survival Horror · Psychological Horror · Horror

Layers of Fear (2016)
Shared: Psychological Horror · Horror · Adventure