Games like S.C.A.R
Games like S.C.A.R include Half-Life 2, DOOM Eternal, DOOM, Black Mesa, and BioShock Infinite. We matched them by the tags players give S.C.A.R on Steam (Action, Indie, Simulation, Adventure, and Early Access): closest matches first, and among equally close ones the better-known games.

Half-Life 2
Shared: Action · FPS · Adventure

DOOM Eternal
Shared: Action · FPS · Gore

DOOM
Shared: Action · FPS · Shooter

Black Mesa
Shared: Action · FPS · Shooter

BioShock Infinite
Shared: Action · Shooter · FPS

ULTRAKILL
Shared: FPS · Gore · Arena Shooter

KovaaK's
Shared: Action · Simulation · Indie

Aimlabs
Shared: Action · Simulation · FPS

Prodeus
Shared: Action · FPS · Indie

Half-Life
Shared: FPS · Action · Shooter

Half-Life: Opposing Force
Shared: Action · FPS · Shooter

DOOM: The Dark Ages
Shared: Action · FPS · Singleplayer

Ravenfield
Shared: FPS · Action · Shooter

Bright Memory: Infinite
Shared: Action · Indie · FPS

Serious Sam 4
Shared: Action · FPS · Shooter

Devil Daggers
Shared: Indie · Action · FPS

RoboCop: Rogue City
Shared: Action · FPS · Singleplayer

Call of Duty®: Black Ops III
Shared: Action · FPS · Shooter

Half-Life: Blue Shift
Shared: Action · FPS · Shooter

SUPERHOT
Shared: Action · Indie · FPS

Turbo Overkill
Shared: Action · FPS · Indie

PUBG: BATTLEGROUNDS
Shared: Shooter · Action · FPS

Ready or Not
Shared: FPS · Shooter · Action

Wolfenstein: The New Order
Shared: Action · FPS · Shooter