Games like Signal Ops
Games like Signal Ops include PAYDAY 2, PUBG: BATTLEGROUNDS, Left 4 Dead 2, Far Cry 3, and PAYDAY 3. We matched them by the tags players give Signal Ops on Steam (FPS, Real Time Tactics, Noir, Stealth, and Shooter): closest matches first, and among equally close ones the better-known games.

PAYDAY 2
Shared: FPS · Co-op · Stealth

PUBG: BATTLEGROUNDS
Shared: FPS · Shooter · Co-op

Left 4 Dead 2
Shared: FPS · Co-op · Shooter

Far Cry 3
Shared: FPS · Shooter · Stealth

PAYDAY 3
Shared: Co-op · FPS · Shooter

Far Cry® 5
Shared: FPS · Co-op · Shooter

Far Cry® 4
Shared: FPS · Co-op · Shooter

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

Borderlands 2
Shared: Shooter · FPS · Co-op

Ready or Not
Shared: FPS · Shooter · Co-op

Insurgency
Shared: FPS · Shooter · Co-op

Deep Rock Galactic
Shared: FPS · Co-op · Shooter

PAYDAY™ The Heist
Shared: FPS · Co-op · Shooter

Arma Reforger
Shared: FPS · Shooter · Strategy

Borderlands Game of the Year Enhanced
Shared: FPS · Co-op · Shooter

Verdun
Shared: Co-op · FPS · Shooter

Battlefield™ 2042
Shared: FPS · Shooter · First-Person

Call of Duty®: Black Ops III
Shared: FPS · Shooter · Co-op

Tom Clancy's Ghost Recon® Wildlands
Shared: Shooter · Co-op · Stealth

How to Fish
Shared: Co-op · Shooter · FPS

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

Aimlabs
Shared: FPS · Shooter · First-Person

Insurgency: Sandstorm
Shared: FPS · Shooter · Co-op

Paladins®
Shared: FPS · Shooter · First-Person