Games like The Skin Stapler
Games like The Skin Stapler include Mouthwashing, Outlast, METRO 2033 Redux, Resident Evil Village, and METRO Last Light Redux. We matched them by the tags players give The Skin Stapler on Steam (Horror, Walking Simulator, Action, Dark Comedy, and Atmospheric): closest matches first, and among equally close ones the better-known games.

Mouthwashing
Shared: Horror · Atmospheric · Walking Simulator

Outlast
Shared: Horror · Atmospheric · First-Person

METRO 2033 Redux
Shared: Horror · Atmospheric · Action

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

METRO Last Light Redux
Shared: Action · Horror · Atmospheric

Hotline Miami
Shared: Action · 1980s · Indie

CULTIC
Shared: Action · Horror · FPS

Resident Evil 7 Biohazard
Shared: Horror · Atmospheric · Action

DOOM
Shared: Action · FPS · Horror

Devil Daggers
Shared: Horror · Action · FPS

Squirrel Stapler
Shared: Horror · Walking Simulator · Atmospheric

HROT
Shared: Retro · Action · FPS

Metro Exodus
Shared: Horror · Action · FPS

Hotline Miami 2: Wrong Number
Shared: Action · Retro · Pixel Graphics

Black Mesa
Shared: Action · FPS · Atmospheric

F.E.A.R.
Shared: Horror · Action · FPS

BioShock™
Shared: Action · Atmospheric · Horror

BioShock™ Remastered
Shared: Horror · Atmospheric · FPS

Ready or Not
Shared: Horror · FPS · Action

The Hat Man: Shadow Ward
Shared: Horror · Action · Atmospheric

DUSK
Shared: Horror · Retro · FPS

Trepang2
Shared: Horror · Action · FPS

DOOM Eternal
Shared: Action · FPS · First-Person

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