Games like Nightmare Journey
Games like Nightmare Journey include Poppy Playtime, Outlast, Five Nights at Freddy's, SOMA, and Layers of Fear (2016). We matched them by the tags players give Nightmare Journey on Steam (Walking Simulator, Horror, Atmospheric, Simulation, and Psychological Horror): closest matches first, and among equally close ones the better-known games.
Poppy Playtime
Shared: Horror · Survival Horror · Puzzle
Outlast
Shared: Horror · Atmospheric · Survival Horror
Five Nights at Freddy's
Shared: Horror · Survival Horror · Psychological Horror
SOMA
Shared: Horror · Atmospheric · Psychological Horror
Layers of Fear (2016)
Shared: Horror · Walking Simulator · Atmospheric
Mouthwashing
Shared: Horror · Psychological Horror · Atmospheric
Resident Evil 7 Biohazard
Shared: Horror · Survival Horror · Atmospheric
[Chillas Art] The Convenience Store
Shared: Horror · Psychological Horror · Simulation
SILENT HILL 2
Shared: Horror · Psychological Horror · Atmospheric
Firework
Shared: Horror · Atmospheric · Psychological Horror
Amnesia: The Dark Descent
Shared: Horror · Atmospheric · Psychological Horror
The Forest
Shared: Horror · Survival Horror · Survival
Garten of Banban
Shared: Horror · Psychological Horror · Puzzle
Inside the Backrooms
Shared: Horror · Survival Horror · Psychological Horror
Kholat
Shared: Horror · Walking Simulator · Atmospheric
Visage
Shared: Horror · Psychological Horror · Survival Horror
Amnesia: A Machine For Pigs
Shared: Walking Simulator · Horror · Atmospheric
Little Nightmares
Shared: Horror · Atmospheric · Puzzle
Outlast 2
Shared: Horror · Psychological Horror · Survival Horror
Slender: The Arrival
Shared: Horror · Survival Horror · Psychological Horror
Among the Sleep - Enhanced Edition
Shared: Horror · Atmospheric · Walking Simulator
Backrooms: Escape Together
Shared: Horror · Psychological Horror · Atmospheric
Sally Face - Episode One
Shared: Horror · Psychological Horror · Atmospheric
Darkwood
Shared: Horror · Survival Horror · Psychological Horror