Games like Mental State. Game One
Games like Mental State. Game One include Outer Wilds, The Room, Firewatch, The Room 4: Old Sins, and The Room Two. We matched them by the tags players give Mental State. Game One on Steam (Adventure, First-Person, Action-Adventure, Hidden Object, and Puzzle): closest matches first, and among equally close ones the better-known games.
Outer Wilds
Shared: Adventure · Exploration · Mystery
The Room
Shared: Puzzle · Adventure · Atmospheric
Firewatch
Shared: Adventure · First-Person · Atmospheric
The Room 4: Old Sins
Shared: Adventure · Puzzle · Mystery
The Room Two
Shared: Puzzle · Adventure · Hidden Object
Rise of the Tomb Raider™
Shared: Adventure · Action-Adventure · Exploration
Portal 2
Shared: First-Person · Puzzle · Puzzle Platformer
Amnesia: Rebirth
Shared: First-Person · Action-Adventure · Puzzle
Viewfinder
Shared: First-Person · Puzzle · Puzzle Platformer
The House of Da Vinci
Shared: Hidden Object · Puzzle · Adventure
What Remains of Edith Finch
Shared: First-Person · Atmospheric · Adventure
COCOON
Shared: Adventure · Puzzle · Atmospheric
The Room Three
Shared: Adventure · Puzzle · Mystery
Deliver Us The Moon
Shared: Adventure · Atmospheric · Puzzle
The Talos Principle
Shared: First-Person · Puzzle · Atmospheric
Poppy Playtime
Shared: First-Person · Puzzle · Adventure
Blue Prince
Shared: Puzzle · First-Person · Mystery
No Man's Sky
Shared: Adventure · Exploration · First-Person
PEAK
Shared: Adventure · First-Person · Exploration
Indiana Jones and the Great Circle
Shared: First-Person · Action-Adventure · Adventure
FAR: Lone Sails
Shared: Adventure · Atmospheric · Puzzle
Atomic Heart
Shared: Adventure · Action-Adventure · Puzzle
The Witness
Shared: First-Person · Puzzle · Exploration
The Long Dark
Shared: First-Person · Adventure · Atmospheric