Games like PC Building Nightmare
Games like PC Building Nightmare include Escape the Backrooms, Lethal Company, Left 4 Dead 2, Dead by Daylight, and Dying Light. We matched them by the tags players give PC Building Nightmare on Steam (Simulation, Horror, Online Co-Op, Memes, and FPS): closest matches first, and among equally close ones the better-known games.

Escape the Backrooms
Shared: Horror · Online Co-Op · First-Person

Lethal Company
Shared: Horror · Online Co-Op · First-Person

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

Dead by Daylight
Shared: Horror · Online Co-Op · Survival Horror

Dying Light
Shared: Horror · Online Co-Op · Survival Horror

Blood and Bacon
Shared: Horror · FPS · Online Co-Op

Phasmophobia
Shared: Horror · Online Co-Op · First-Person

Outlast
Shared: Horror · First-Person · Survival Horror

Inside the Backrooms
Shared: Horror · Online Co-Op · Survival Horror

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

GTFO
Shared: Horror · Online Co-Op · FPS

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

Ready or Not
Shared: FPS · Horror · Singleplayer

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

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

The Outlast Trials
Shared: Horror · Survival Horror · First-Person

How to Fish
Shared: Online Co-Op · First-Person · FPS

Resident Evil Village
Shared: Horror · Survival Horror · First-Person

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

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

Back 4 Blood
Shared: Online Co-Op · FPS · Horror

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

Shift At Midnight
Shared: Horror · Online Co-Op · Simulation

Resident Evil Requiem
Shared: Horror · Survival Horror · FPS