Games like Obscurity: Unknown Threat
Games like Obscurity: Unknown Threat include Left 4 Dead 2, PUBG: BATTLEGROUNDS, Call of Duty®, Ready or Not, and Back 4 Blood. We matched them by the tags players give Obscurity: Unknown Threat on Steam (FPS, Shooter, Action, Horror, and PvE): closest matches first, and among equally close ones the better-known games.

Left 4 Dead 2
Shared: FPS · Shooter · Action

PUBG: BATTLEGROUNDS
Shared: Shooter · FPS · Action

Call of Duty®
Shared: FPS · Shooter · Action

Ready or Not
Shared: FPS · Shooter · Horror

Back 4 Blood
Shared: FPS · Shooter · Online Co-Op

PAYDAY 2
Shared: FPS · Action · Online Co-Op

Delta Force
Shared: FPS · Shooter · Multiplayer

Squad
Shared: FPS · Shooter · PvE

Blood and Bacon
Shared: Shooter · FPS · Action

GTFO
Shared: FPS · Horror · Online Co-Op

Battlefield™ 2042
Shared: FPS · Shooter · Action

Killing Floor 2
Shared: FPS · Online Co-Op · Shooter

DOOM
Shared: FPS · Action · Shooter

Insurgency: Sandstorm
Shared: FPS · Shooter · Action

HELLDIVERS™ 2
Shared: Shooter · PvE · Online Co-Op

Call of Duty®: Modern Warfare®
Shared: FPS · Action · Shooter

Apex Legends™
Shared: FPS · Shooter · Multiplayer

THE FINALS
Shared: FPS · Shooter · Multiplayer

World War Z
Shared: Action · Online Co-Op · Shooter

Titanfall® 2
Shared: FPS · Shooter · Action

Call of Duty®: Modern Warfare® 2 (2009)
Shared: FPS · Action · Shooter

Battlefield 4™
Shared: FPS · Shooter · Multiplayer

Left 4 Dead
Shared: FPS · Action · Shooter

DOOM Eternal
Shared: FPS · Action · Shooter