Games like They Die Tomorrow
Games like They Die Tomorrow include Lethal Company, Outlast, Escape the Backrooms, Backrooms: Escape Together, and The Outlast Trials. We matched them by the tags players give They Die Tomorrow on Steam (Horror, Investigation, Psychological Horror, First-Person, and Survival Horror): closest matches first, and among equally close ones the better-known games.

Lethal Company
Shared: Horror · First-Person · Survival Horror

Outlast
Shared: Horror · First-Person · Psychological Horror

Escape the Backrooms
Shared: Horror · Psychological Horror · Survival Horror

Backrooms: Escape Together
Shared: Horror · Psychological Horror · Survival Horror

The Outlast Trials
Shared: Horror · Psychological Horror · Survival Horror

Resident Evil 7 Biohazard
Shared: Horror · First-Person · Survival Horror

Phasmophobia
Shared: Horror · Psychological Horror · Investigation

Amnesia: The Bunker
Shared: Horror · Survival Horror · First-Person

SOMA
Shared: Horror · Psychological Horror · Atmospheric

Outlast 2
Shared: Horror · Psychological Horror · First-Person

SILENT HILL: Townfall
Shared: Horror · Psychological Horror · First-Person

Inside the Backrooms
Shared: Horror · Psychological Horror · Survival Horror

Poppy Playtime
Shared: Horror · First-Person · Survival Horror

Five Nights at Freddy's: Secret of the Mimic
Shared: Horror · First-Person · Adventure

Amnesia: The Dark Descent
Shared: Horror · Psychological Horror · Survival Horror

The Forest
Shared: Horror · Survival Horror · First-Person

The Beast Inside
Shared: Horror · First-Person · Survival Horror

Five Nights at Freddy's: Security Breach
Shared: Horror · Survival Horror · First-Person

Darkwood
Shared: Horror · Psychological Horror · Survival Horror

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

Pacify
Shared: Horror · Psychological Horror · Survival Horror

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

SILENT HILL f
Shared: Horror · Psychological Horror · Survival Horror

Nuclear Nightmare
Shared: Horror · Survival Horror · First-Person