Games like Beyond the Doors
Games like Beyond the Doors include Firewatch, Outer Wilds, SOMA, Subnautica 2, and DREDGE. We matched them by the tags players give Beyond the Doors on Steam (Automation, Physics, Programming, Open World, and Atmospheric): closest matches first, and among equally close ones the better-known games.

Firewatch
Shared: Atmospheric · Adventure · Open World

Outer Wilds
Shared: Exploration · Atmospheric · Adventure

SOMA
Shared: Atmospheric · Psychological Horror · Horror

Subnautica 2
Shared: Open World · Horror · Exploration

DREDGE
Shared: Open World · Exploration · Adventure

Poppy Playtime
Shared: Horror · Psychological Horror · First-Person

The Forest
Shared: Open World · Horror · Adventure

Tunnet
Shared: Automation · Programming · Psychological Horror

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

Fallout 4
Shared: Open World · Atmospheric · Exploration

PEAK
Shared: Physics · Adventure · Exploration

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

Inside the Backrooms
Shared: Psychological Horror · Horror · Adventure

Backrooms: Escape Together
Shared: Psychological Horror · Horror · Atmospheric

Little Nightmares
Shared: Atmospheric · Adventure · Horror

Little Nightmares II
Shared: Adventure · Atmospheric · Horror

Outlast
Shared: Atmospheric · Psychological Horror · Horror

We Happy Few
Shared: Open World · Adventure · Psychological Horror

What Remains of Edith Finch
Shared: Atmospheric · Adventure · Exploration

Lethal Company
Shared: Horror · Psychological Horror · Exploration

The Witness
Shared: Open World · Exploration · Atmospheric

The Long Dark
Shared: Open World · Atmospheric · Exploration

Stray
Shared: Atmospheric · Adventure · Exploration

Subnautica
Shared: Open World · Horror · Exploration