Games like Project Unknown
Games like Project Unknown include Phasmophobia, Pacify, Escape the Backrooms, Demonologist, and Dead by Daylight. We matched them by the tags players give Project Unknown on Steam (Horror, Online Co-Op, Multiplayer, Psychological Horror, and Survival Horror): closest matches first, and among equally close ones the better-known games.
Phasmophobia
Shared: Horror · Online Co-Op · Multiplayer
Pacify
Shared: Horror · Online Co-Op · Multiplayer
Escape the Backrooms
Shared: Horror · Online Co-Op · Multiplayer
Demonologist
Shared: Horror · Online Co-Op · Multiplayer
Dead by Daylight
Shared: Horror · Multiplayer · Online Co-Op
DEVOUR
Shared: Horror · Online Co-Op · Multiplayer
Lethal Company
Shared: Horror · Online Co-Op · Co-op
Inside the Backrooms
Shared: Horror · Multiplayer · Psychological Horror
Backrooms: Escape Together
Shared: Horror · Multiplayer · Online Co-Op
The Outlast Trials
Shared: Horror · Multiplayer · Co-op
Lunch Lady
Shared: Horror · Online Co-Op · Multiplayer
Outlast
Shared: Horror · Psychological Horror · Survival Horror
Nuclear Nightmare
Shared: Online Co-Op · Horror · Survival Horror
Left 4 Dead 2
Shared: Multiplayer · Co-op · Online Co-Op
Content Warning
Shared: Horror · Online Co-Op · Multiplayer
PEAK
Shared: Online Co-Op · Multiplayer · Co-op
R.E.P.O.
Shared: Horror · Online Co-Op · Multiplayer
In Silence
Shared: Horror · Online Co-Op · Multiplayer
BIGFOOT
Shared: Horror · Multiplayer · Online Co-Op
GTFO
Shared: Horror · Online Co-Op · Co-op
PANICORE
Shared: Horror · Online Co-Op · Psychological Horror
Dying Light
Shared: Horror · Online Co-Op · Survival Horror
Shift At Midnight
Shared: Horror · Online Co-Op · Multiplayer
Labyrinthine
Shared: Horror · Online Co-Op · Multiplayer