Games like Lethal Company
Games like Lethal Company include Nuclear Nightmare, Escape the Backrooms, Content Warning, Backrooms: Escape Together, and Pacify. We matched them by the tags players give Lethal Company on Steam (Online Co-Op, Horror, First-Person, Survival Horror, and Funny): closest matches first, and among equally close ones the better-known games.

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

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

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

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

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

Zort
Shared: Online Co-Op · Horror · Co-op

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

PEAK
Shared: Online Co-Op · Co-op · First-Person

Species: Unknown
Shared: Online Co-Op · Horror · First-Person

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

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

Phasmophobia
Shared: Online Co-Op · Horror · Co-op

The Outlast Trials
Shared: Horror · Co-op · Survival Horror

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

Murky Divers
Shared: Horror · Online Co-Op · First-Person

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

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

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

Subnautica 2
Shared: Horror · Co-op · Exploration

Sketchy's Contract
Shared: Online Co-Op · Horror · First-Person

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

MIMESIS
Shared: Online Co-Op · Funny · Psychological Horror

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

Outlast
Shared: Horror · First-Person · Survival Horror