Games like Demons Killers
Games like Demons Killers include Resident Evil Requiem, Five Nights at Freddy's: Security Breach, Outlast, Resident Evil Village, and Alien: Isolation. We matched them by the tags players give Demons Killers on Steam (Survival Horror, Perma Death, First-Person, Female Protagonist, and Runner): closest matches first, and among equally close ones the better-known games.

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

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

Outlast
Shared: Survival Horror · First-Person · Singleplayer

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

Alien: Isolation
Shared: Survival Horror · First-Person · Female Protagonist

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

Portal 2
Shared: First-Person · Singleplayer · Female Protagonist

Rise of the Tomb Raider™
Shared: Female Protagonist · Action · Adventure

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

Mirror's Edge™ Catalyst
Shared: Female Protagonist · First-Person · Runner

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

Dying Light
Shared: Survival Horror · First-Person · Action

Hello Neighbor
Shared: First-Person · Survival Horror · 3D Platformer

Resident Evil 4
Shared: Survival Horror · Action · Singleplayer

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

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

Dark Deception
Shared: First-Person · Survival Horror · Runner

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

Tomb Raider Game of the Year
Shared: Female Protagonist · Action · Adventure

Resident Evil 3
Shared: Survival Horror · Female Protagonist · Action

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

Choo-Choo Charles
Shared: Survival Horror · First-Person · Singleplayer

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

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