Games like The Insignia Project
Games like The Insignia Project include Lethal Company, METRO 2033 Redux, MiSide, Metro Exodus, and MOLE. We matched them by the tags players give The Insignia Project on Steam (Horror, Psychological Horror, Dystopian , Post-apocalyptic, and Alternate History): closest matches first, and among equally close ones the better-known games.
Lethal Company
Shared: Horror · Psychological Horror · First-Person
METRO 2033 Redux
Shared: Post-apocalyptic · Horror · FPS
MiSide
Shared: Psychological Horror · Horror · 3D
Metro Exodus
Shared: Post-apocalyptic · FPS · Horror
MOLE
Shared: Horror · Psychological Horror · Simulation
Inside the Backrooms
Shared: Horror · Psychological Horror · FPS
SOMA
Shared: Horror · Psychological Horror · Atmospheric
Escape the Backrooms
Shared: Horror · Psychological Horror · 3D
METRO Last Light Redux
Shared: Post-apocalyptic · Horror · FPS
Phasmophobia
Shared: Horror · Psychological Horror · First-Person
Outlast
Shared: Horror · Psychological Horror · Atmospheric
Iron Lung
Shared: Horror · Psychological Horror · Atmospheric
Backrooms: Escape Together
Shared: Horror · Psychological Horror · Atmospheric
BioShock™ Remastered
Shared: Horror · FPS · Dystopian
The Outlast Trials
Shared: Horror · Psychological Horror · First-Person
Mouthwashing
Shared: Horror · Psychological Horror · Atmospheric
Hamster Hunter
Shared: Psychological Horror · Horror · 3D
No, I'm not a Human
Shared: Horror · Psychological Horror · Atmospheric
Zort
Shared: Horror · Psychological Horror · Atmospheric
Species: Unknown
Shared: Horror · Atmospheric · First-Person
Outlast 2
Shared: Horror · Psychological Horror · Atmospheric
Five Nights at Freddy's
Shared: Horror · Psychological Horror · Indie
Buckshot Roulette
Shared: Horror · Psychological Horror · 3D
PILGRIM
Shared: Horror · 3D · Psychological Horror