Games like The Secret Ops 2
Games like The Secret Ops 2 include HELLDIVERS™ 2, Warhammer 40,000: Space Marine - Anniversary Edition, STAR WARS™ Battlefront™ II, EARTH DEFENSE FORCE 6, and Dead Space (2008). We matched them by the tags players give The Secret Ops 2 on Steam (Action, Indie, Shooter, Third-Person Shooter, and 3D): closest matches first, and among equally close ones the better-known games.

HELLDIVERS™ 2
Shared: Third-Person Shooter · Action · Shooter

Warhammer 40,000: Space Marine - Anniversary Edition
Shared: Action · Third-Person Shooter · Sci-fi

STAR WARS™ Battlefront™ II
Shared: Shooter · Action · Third-Person Shooter

EARTH DEFENSE FORCE 6
Shared: Action · Shooter · Third-Person Shooter

Dead Space (2008)
Shared: Action · Sci-fi · Third-Person Shooter

Dead Space
Shared: Third-Person Shooter · Sci-fi · Shooter

Vanquish
Shared: Action · Third-Person Shooter · Shooter

The Callisto Protocol™
Shared: Third-Person Shooter · Sci-fi · Shooter

Grand Theft Auto V Legacy
Shared: Action · Shooter · Third-Person Shooter

STAR WARS™ Battlefront II (Classic, 2005)
Shared: Action · Shooter · Third-Person Shooter

Warhammer 40,000: Space Marine 2
Shared: Action · Third-Person Shooter · Sci-fi

Dead Space™ 2
Shared: Shooter · Third-Person Shooter · Action

Bright Memory: Infinite
Shared: Action · Indie · Shooter

PRAGMATA
Shared: Action · Third-Person Shooter · Sci-fi

Black Mesa
Shared: Action · Sci-fi · Shooter

Max Payne 3
Shared: Action · Third-Person Shooter · Shooter

My Friend Pedro
Shared: Action · Indie · Shooter

BioShock Infinite
Shared: Action · Shooter · Singleplayer

The Bureau: XCOM Declassified
Shared: Action · Third-Person Shooter · Sci-fi

Gears 5
Shared: Action · Third-Person Shooter · Shooter

DOOM
Shared: Action · Shooter · Gore

Half-Life 2
Shared: Action · Sci-fi · Shooter

Aliens: Fireteam Elite
Shared: Shooter · Action · Third-Person Shooter

Just Cause™ 3
Shared: Action · Third-Person Shooter · Shooter