Games like Trooper 2 - Alien Justice
Games like Trooper 2 - Alien Justice include Grand Theft Auto V Legacy, STAR WARS™ Battlefront II (Classic, 2005), HELLDIVERS™ 2, STAR WARS™ Battlefront™ II, and PUBG: BATTLEGROUNDS. We matched them by the tags players give Trooper 2 - Alien Justice on Steam (Action, Indie, Third-Person Shooter, First-Person, and Sci-fi): closest matches first, and among equally close ones the better-known games.

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

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

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

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

PUBG: BATTLEGROUNDS
Shared: Shooter · Action · Third-Person Shooter

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

Aimlabs
Shared: Action · First-Person · Shooter

Black Mesa
Shared: Action · First-Person · Sci-fi

Grand Theft Auto V Enhanced
Shared: Action · Third Person · Shooter

Bright Memory: Infinite
Shared: Action · Indie · Sci-fi

Warframe
Shared: Action · Third-Person Shooter · Third Person

Watch_Dogs™
Shared: Action · Hacking · Third Person

Watch_Dogs® 2
Shared: Action · Hacking · Third Person

Half-Life 2
Shared: Action · Sci-fi · First-Person

Call of Duty®: Modern Warfare® II
Shared: Action · Third-Person Shooter · Shooter

BioShock Infinite
Shared: Action · First-Person · Shooter

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

KovaaK's
Shared: Action · Indie · Shooter

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

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

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

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

ORION: Prelude
Shared: Action · Indie · Shooter

STAR WARS™ Jedi Knight - Jedi Academy™
Shared: Action · Sci-fi · Third Person