Games like Jeff The Killer: Horror Game
Games like Jeff The Killer: Horror Game include No, I'm not a Human, Resident Evil 7 Biohazard, Resident Evil 2, The Room, and The Room Two. We matched them by the tags players give Jeff The Killer: Horror Game on Steam (Puzzle, Horror, Hidden Object, Multiple Endings, and Choices Matter): closest matches first, and among equally close ones the better-known games.

No, I'm not a Human
Shared: Horror · Choices Matter · Multiple Endings

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

Resident Evil 2
Shared: Horror · Puzzle · Atmospheric

The Room
Shared: Puzzle · Hidden Object · Atmospheric

The Room Two
Shared: Puzzle · Hidden Object · Horror

Amnesia: The Dark Descent
Shared: Horror · Puzzle · Atmospheric

Poppy Playtime
Shared: Horror · Puzzle · Singleplayer

SOMA
Shared: Horror · Atmospheric · Exploration

Buckshot Roulette
Shared: Horror · Puzzle · Psychological

Outlast
Shared: Horror · Atmospheric · First-Person

Scorn
Shared: Horror · Puzzle · Atmospheric

Backrooms: Escape Together
Shared: Horror · Atmospheric · Early Access

Five Nights at Freddy's: Security Breach
Shared: Horror · Multiple Endings · Exploration

Outlast 2
Shared: Horror · Atmospheric · Gore

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

Inside the Backrooms
Shared: Horror · Puzzle · Exploration

The Room Three
Shared: Puzzle · Hidden Object · Atmospheric

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

OneShot
Shared: Puzzle · Atmospheric · Choices Matter

Dead by Daylight
Shared: Horror · Gore · Violent

Summon
Shared: Horror · Puzzle · Choices Matter

Little Nightmares II
Shared: Horror · Puzzle · Atmospheric

In Sound Mind
Shared: Horror · Puzzle · Atmospheric

SILENT HILL 2
Shared: Horror · Atmospheric · Psychological