Games like Counter Operation Online
Games like Counter Operation Online include Call of Duty®, PUBG: BATTLEGROUNDS, Squad, Battlefield™ V, and Insurgency: Sandstorm. We matched them by the tags players give Counter Operation Online on Steam (Shooter, FPS, First-Person, Online Co-Op, and 3D Platformer): closest matches first, and among equally close ones the better-known games.

Call of Duty®
Shared: FPS · Shooter · First-Person

PUBG: BATTLEGROUNDS
Shared: Shooter · FPS · Online Co-Op

Squad
Shared: FPS · Military · Shooter

Battlefield™ V
Shared: FPS · Shooter · First-Person

Insurgency: Sandstorm
Shared: FPS · Shooter · Military

Delta Force
Shared: FPS · Shooter · Online Co-Op

Battlefield 4™
Shared: FPS · Shooter · First-Person

Left 4 Dead 2
Shared: FPS · Shooter · Online Co-Op

Battlefield™ 2042
Shared: FPS · Shooter · Military

BattleBit Remastered
Shared: FPS · Shooter · Military

Call of Duty®: Warzone™
Shared: FPS · Shooter · First-Person

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

Titanfall® 2
Shared: FPS · Shooter · First-Person

Call of Duty®: Modern Warfare®
Shared: FPS · Shooter · First-Person

Call of Duty®: Modern Warfare® 2 (2009)
Shared: FPS · Shooter · First-Person

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

Counter-Strike: Source
Shared: Shooter · FPS · First-Person

Arma 3
Shared: Shooter · Military · First-Person

Paladins®
Shared: FPS · Shooter · First-Person

Call of Duty®: Black Ops 6
Shared: Shooter · FPS · First-Person

Apex Legends™
Shared: FPS · Shooter · First-Person

Call of Duty®: Black Ops Cold War
Shared: FPS · Shooter · First-Person

Hell Let Loose
Shared: Shooter · FPS · Military

Bodycam
Shared: FPS · Shooter · First-Person