Games like LeftUnknown
Games like LeftUnknown include DOOM Eternal, METRO 2033 Redux, DOOM, Metro Exodus, and BioShock Infinite. We matched them by the tags players give LeftUnknown on Steam (FPS, Action, Looter Shooter, Physics, and Gore): closest matches first, and among equally close ones the better-known games.

DOOM Eternal
Shared: FPS · Action · Gore

METRO 2033 Redux
Shared: FPS · Action · Post-apocalyptic

DOOM
Shared: FPS · Action · Gore

Metro Exodus
Shared: FPS · Action · Post-apocalyptic

BioShock Infinite
Shared: Action · FPS · First-Person

Battlefield™ 2042
Shared: FPS · Action · Shooter

METRO Last Light Redux
Shared: FPS · Action · Post-apocalyptic

Call of Duty®: Black Ops III
Shared: FPS · Action · First-Person

Half-Life 2
Shared: FPS · Action · First-Person

Left 4 Dead 2
Shared: FPS · Action · Gore

Call of Duty®
Shared: FPS · Action · Shooter

Titanfall® 2
Shared: FPS · Action · Shooter

RoboCop: Rogue City
Shared: FPS · Action · First-Person

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

Counter-Strike 2
Shared: FPS · Action · Shooter

Battlefield™ 1
Shared: FPS · Action · First-Person

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

Black Mesa
Shared: FPS · Action · First-Person

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

Shadow Warrior 2
Shared: Action · FPS · Looter Shooter

GoreBox
Shared: FPS · Gore · Physics

Borderlands 2
Shared: Action · FPS · Looter Shooter

PAYDAY 2
Shared: Action · FPS · Looter Shooter

Killing Floor 2
Shared: FPS · Gore · Action