Games like Dark Hours: Prologue
Games like Dark Hours: Prologue include Lethal Company, Dead by Daylight, Escape the Backrooms, Content Warning, and Pacify. We matched them by the tags players give Dark Hours: Prologue on Steam (Horror, Multiplayer, Online Co-Op, Survival Horror, and Funny): closest matches first, and among equally close ones the better-known games.

Lethal Company
Shared: Horror · Online Co-Op · Survival Horror

Dead by Daylight
Shared: Horror · Multiplayer · Survival Horror

Escape the Backrooms
Shared: Horror · Multiplayer · Online Co-Op

Content Warning
Shared: Horror · Online Co-Op · Multiplayer

Pacify
Shared: Horror · Multiplayer · Online Co-Op

Backrooms: Escape Together
Shared: Horror · Multiplayer · Online Co-Op

Phasmophobia
Shared: Horror · Multiplayer · Online Co-Op

Inside the Backrooms
Shared: Horror · Multiplayer · Survival Horror

Lunch Lady
Shared: Horror · Multiplayer · Online Co-Op

Nuclear Nightmare
Shared: Horror · Online Co-Op · Survival Horror

Dark Hours
Shared: Horror · Multiplayer · Online Co-Op

DEVOUR
Shared: Horror · Multiplayer · Online Co-Op

R.E.P.O.
Shared: Horror · Multiplayer · Online Co-Op

PEAK
Shared: Multiplayer · Online Co-Op · Co-op

BIGFOOT
Shared: Horror · Multiplayer · Online Co-Op

PANICORE
Shared: Horror · Online Co-Op · Survival Horror

Left 4 Dead 2
Shared: Multiplayer · Online Co-Op · Horror

The Outlast Trials
Shared: Horror · Multiplayer · Survival Horror

We Were Here
Shared: Multiplayer · Horror · Co-op

Subnautica 2
Shared: Multiplayer · Horror · Survival Horror

RV There Yet?
Shared: Multiplayer · Online Co-Op · Funny

GTFO
Shared: Horror · Online Co-Op · Multiplayer

Labyrinthine
Shared: Horror · Online Co-Op · Multiplayer

Murky Divers
Shared: Horror · Multiplayer · Online Co-Op