Games like The Vending Machine
Games like The Vending Machine include Escape the Backrooms, Outlast, Five Nights at Freddy's: Security Breach, Lethal Company, and SOMA. We matched them by the tags players give The Vending Machine on Steam (Psychological Horror, Walking Simulator, Simulation, Horror, and Exploration): closest matches first, and among equally close ones the better-known games.

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

Outlast
Shared: Horror · Psychological Horror · Survival Horror

Five Nights at Freddy's: Security Breach
Shared: Horror · Survival Horror · Exploration

Lethal Company
Shared: Horror · Psychological Horror · Exploration

SOMA
Shared: Psychological Horror · Horror · Exploration

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

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

Visage
Shared: Psychological Horror · Horror · Survival Horror

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

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

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

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

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

Five Nights at Freddy's
Shared: Horror · Psychological Horror · Survival Horror

Scanner Sombre
Shared: Walking Simulator · Exploration · Horror

Amnesia: The Bunker
Shared: Horror · Survival Horror · Stealth

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

Outlast 2
Shared: Psychological Horror · Horror · Survival Horror

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

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

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

The Beast Inside
Shared: Horror · Psychological Horror · Action

MiSide
Shared: Psychological Horror · Horror · First-Person

Mouthwashing
Shared: Psychological Horror · Horror · Walking Simulator