Games like Halloween (2018)
Games like Halloween (2018) include Dead by Daylight, Halloween: The Game, Outlast, Outlast 2, and The Texas Chain Saw Massacre. We matched them by the tags players give Halloween (2018) on Steam (Horror, Multiplayer, Violent, Survival, and Gore): closest matches first, and among equally close ones the better-known games.

Dead by Daylight
Shared: Horror · Multiplayer · Gore

Halloween: The Game
Shared: Horror · Multiplayer · Violent

Outlast
Shared: Horror · Gore · Multiplayer

Outlast 2
Shared: Horror · Gore · Violent

The Texas Chain Saw Massacre
Shared: Horror · Multiplayer · Gore

DEVOUR
Shared: Horror · Multiplayer · Online Co-Op

Resident Evil 7 Biohazard
Shared: Horror · Gore · Survival Horror

Resident Evil Village
Shared: Horror · Survival Horror · Action

Dying Light
Shared: Horror · Survival Horror · Survival

Left 4 Dead 2
Shared: Multiplayer · Horror · Survival

Resident Evil 2
Shared: Horror · Survival Horror · Gore

Resident Evil 3
Shared: Horror · Multiplayer · Action

In Silence
Shared: Horror · Multiplayer · Survival

The Outlast Trials
Shared: Horror · Multiplayer · Survival Horror

Back 4 Blood
Shared: Multiplayer · Gore · Horror

Escape the Backrooms
Shared: Horror · Multiplayer · Online Co-Op

Manhunt
Shared: Horror · Violent · Gore

Killing Floor
Shared: Horror · Survival · Multiplayer

Carnival Hunt
Shared: Horror · Multiplayer · Survival

Resident Evil 4
Shared: Horror · Action · Survival

Killing Floor 2
Shared: Multiplayer · Gore · Horror

R.E.P.O.
Shared: Horror · Multiplayer · Online Co-Op

Mortal Kombat 11
Shared: Multiplayer · Violent · Gore

The Beast Inside
Shared: Horror · Multiplayer · Action