Games like THE UNKNOWN HALLS
Games like THE UNKNOWN HALLS include Portal 2, Portal, LIMBO, Little Nightmares, and Poppy Playtime. We matched them by the tags players give THE UNKNOWN HALLS on Steam (Action, Platformer, Puzzle, Walking Simulator, and 3D Platformer): closest matches first, and among equally close ones the better-known games.
Portal 2
Shared: Platformer · Puzzle · Puzzle Platformer
Portal
Shared: Puzzle · Puzzle Platformer · 3D Platformer
LIMBO
Shared: Puzzle · Platformer · Puzzle Platformer
Little Nightmares
Shared: Puzzle · Puzzle Platformer · Platformer
Poppy Playtime
Shared: Puzzle · Psychological Horror · First-Person
Garten of Banban
Shared: Puzzle · Psychological Horror · First-Person
Outlast
Shared: Psychological Horror · First-Person · Action
Little Nightmares II
Shared: Puzzle · Psychological Horror · Puzzle Platformer
Seen
Shared: Puzzle · Platformer · Action
Garten of Banban 2
Shared: Puzzle · Psychological Horror · First-Person
In Sound Mind
Shared: Action · Puzzle · Psychological Horror
Planet of Lana
Shared: Action · Puzzle Platformer · Puzzle
Garten of Banban 3
Shared: Puzzle · Psychological Horror · Action
Gorilla Tag
Shared: Psychological Horror · Action · 3D Platformer
SOMA
Shared: Psychological Horror · Atmospheric · Puzzle
Amnesia: The Dark Descent
Shared: Puzzle · Psychological Horror · First-Person
Layers of Fear (2016)
Shared: Walking Simulator · Psychological Horror · First-Person
The Outlast Trials
Shared: Psychological Horror · Action · First-Person
Resident Evil 7 Biohazard
Shared: Action · First-Person · Psychological Horror
INSIDE
Shared: Puzzle Platformer · Puzzle · Atmospheric
Buckshot Roulette
Shared: First-Person · Dark · Puzzle
The Exit 8
Shared: Puzzle · Walking Simulator · Psychological Horror
Mirror's Edge™ Catalyst
Shared: Action · 3D Platformer · Runner
The Talos Principle 2
Shared: Puzzle · Puzzle Platformer · Walking Simulator