Games like The Apartment
Games like The Apartment include CARRION, Outlast 2, Dead by Daylight, Maid of Sker, and Outlast. We matched them by the tags players give The Apartment on Steam (Gore, Violent, Action, Adventure, and Indie): closest matches first, and among equally close ones the better-known games.

CARRION
Shared: Gore · Action · Violent

Outlast 2
Shared: Gore · Horror · Psychological Horror

Dead by Daylight
Shared: Gore · Horror · Violent

Maid of Sker
Shared: Gore · Action · Adventure

Outlast
Shared: Gore · Horror · Psychological Horror

The Beast Inside
Shared: Adventure · Horror · Action

The Evil Within 2
Shared: Horror · Gore · Action

Lucius
Shared: Gore · Adventure · Horror

Hotline Miami
Shared: Violent · Action · Gore

The Dark Occult
Shared: Action · Adventure · Violent

Resident Evil 7 Biohazard
Shared: Gore · Horror · Action

Remothered: Tormented Fathers
Shared: Action · Adventure · Horror

People Playground
Shared: Gore · Violent · Indie

Manhunt
Shared: Gore · Violent · Action

DOOM Eternal
Shared: Gore · Action · Violent

Hellblade: Senua's Sacrifice VR Edition
Shared: Action · Violent · Adventure

Trepang2
Shared: Gore · Violent · Horror

Mists of Aiden
Shared: Violent · Adventure · Horror

Clive Barker's Hellraiser: Revival
Shared: Gore · Action · Horror

Resident Evil Village
Shared: Action · Horror · Gore

Blasphemous
Shared: Gore · Violent · Indie

Ready or Not
Shared: Horror · Action · Violent

[Chillas Art] Aka Manto
Shared: Violent · Gore · Indie

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