Games like Containment Initiative: PC Standalone
Games like Containment Initiative: PC Standalone include DOOM Eternal, Hotline Miami, Left 4 Dead 2, Bright Memory: Infinite, and Serious Sam Fusion 2017 (beta). We matched them by the tags players give Containment Initiative: PC Standalone on Steam (Action, Indie, Gore, Violent, and FPS): closest matches first, and among equally close ones the better-known games.

DOOM Eternal
Shared: Action · Gore · FPS

Hotline Miami
Shared: Action · Indie · Violent

Left 4 Dead 2
Shared: Zombies · FPS · Action

Bright Memory: Infinite
Shared: Action · Indie · FPS

Serious Sam Fusion 2017 (beta)
Shared: Action · Gore · Indie

Back 4 Blood
Shared: Zombies · Gore · FPS

Killing Floor
Shared: FPS · Zombies · Action

DOOM
Shared: Action · Gore · FPS

Wolfenstein II: The New Colossus
Shared: Action · Gore · FPS

Serious Sam 4
Shared: Action · Gore · FPS

My Friend Pedro
Shared: Action · Indie · Gore

Maximum Action
Shared: Action · Gore · Violent

Paint the Town Red
Shared: Action · Gore · Violent

Chivalry: Medieval Warfare
Shared: Action · Gore · Violent

Hotline Miami 2: Wrong Number
Shared: Gore · Action · Violent

Pavlov
Shared: Action · FPS · Gore

Killing Floor 2
Shared: Gore · Zombies · FPS

Trepang2
Shared: Gore · FPS · Action

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

Nightmare of Decay
Shared: Action · FPS · Zombies

Resident Evil Village
Shared: Action · Gore · Zombies

GoreBox
Shared: Gore · Violent · FPS

Prodeus
Shared: Action · Gore · FPS

CARRION
Shared: Gore · Action · Indie