Games like Room 817: Director's Cut
Games like Room 817: Director's Cut include Poppy Playtime, Bendy and the Ink Machine, Resident Evil 7 Biohazard, SOMA, and Resident Evil Village. We matched them by the tags players give Room 817: Director's Cut on Steam (Horror, First-Person, Survival Horror, Puzzle, and Investigation): closest matches first, and among equally close ones the better-known games.

Poppy Playtime
Shared: Horror · First-Person · Puzzle

Bendy and the Ink Machine
Shared: Horror · First-Person · Puzzle

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

SOMA
Shared: Horror · Psychological Horror · Survival Horror

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

Outlast
Shared: Horror · First-Person · Survival Horror

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

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

Garten of Banban
Shared: Horror · First-Person · Singleplayer

Bendy and the Dark Revival
Shared: Horror · First-Person · Survival Horror

MiSide
Shared: Horror · Psychological Horror · First-Person

Five Nights at Freddy's 2
Shared: Horror · Survival Horror · First-Person

Escape the Backrooms
Shared: Horror · Survival Horror · First-Person

Amnesia: Rebirth
Shared: First-Person · Puzzle · Horror

Inside the Backrooms
Shared: Horror · Survival Horror · Puzzle

Five Nights at Freddy's
Shared: Horror · Survival Horror · Singleplayer

Phasmophobia
Shared: Horror · Psychological Horror · First-Person

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

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

Garten of Banban 2
Shared: Horror · First-Person · Puzzle

Layers of Fear (2016)
Shared: Horror · First-Person · Psychological Horror

Five Nights at Freddy's: Sister Location
Shared: Horror · Survival Horror · First-Person

Penumbra Overture
Shared: Horror · First-Person · Survival Horror

FIVE NIGHTS AT FREDDY'S: HELP WANTED
Shared: Horror · Survival Horror · First-Person