Games like The Stairwell
Games like The Stairwell include The Cabin Factory, Layers of Fear (2016), No, I'm not a Human, MiSide, and Firewatch. We matched them by the tags players give The Stairwell on Steam (Psychological Horror, Horror, Walking Simulator, Simulation, and Indie): closest matches first, and among equally close ones the better-known games.

The Cabin Factory
Shared: Psychological Horror · Horror · Walking Simulator

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

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

MiSide
Shared: Psychological Horror · Horror · Atmospheric

Firewatch
Shared: Walking Simulator · Atmospheric · Adventure

Scanner Sombre
Shared: Horror · Walking Simulator · Psychological Horror

Outlast
Shared: Horror · Psychological Horror · Atmospheric

Visage
Shared: Psychological Horror · Horror · Atmospheric

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

SOMA
Shared: Psychological Horror · Horror · Atmospheric

Mouthwashing
Shared: Psychological Horror · Horror · Atmospheric

[Chillas Art] The Convenience Store
Shared: Horror · Psychological Horror · Indie

Fears to Fathom - Ironbark Lookout
Shared: Psychological Horror · Horror · Atmospheric

Amnesia: A Machine For Pigs
Shared: Horror · Walking Simulator · Psychological Horror

POOLS
Shared: Psychological Horror · Walking Simulator · Atmospheric

Iron Lung
Shared: Horror · Psychological Horror · Atmospheric

Lethal Company
Shared: Horror · Psychological Horror · First-Person

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

Still Wakes the Deep
Shared: Psychological Horror · Horror · Walking Simulator

September 7th
Shared: Horror · Psychological Horror · Walking Simulator

The Exit 8
Shared: Walking Simulator · Horror · Psychological Horror

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

Summer of '58
Shared: Horror · Psychological Horror · Walking Simulator

Welcome to Kowloon
Shared: Horror · Psychological Horror · Walking Simulator