Games like Aliens: Fireteam Elite 2
Games like Aliens: Fireteam Elite 2 include HELLDIVERS™ 2, Aliens: Fireteam Elite, STAR WARS™ Battlefront™ II, Dead Space, and Dead Space (2008). We matched them by the tags players give Aliens: Fireteam Elite 2 on Steam (Shooter, Action, Space, Aliens, and Horror): closest matches first, and among equally close ones the better-known games.

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

Aliens: Fireteam Elite
Shared: Shooter · Action · Aliens

STAR WARS™ Battlefront™ II
Shared: Shooter · Space · Action

Dead Space
Shared: Horror · Space · Third-Person Shooter

Dead Space (2008)
Shared: Action · Horror · Space

Dead Space™ 3
Shared: Action · Horror · Shooter

The Callisto Protocol™
Shared: Horror · Shooter · Space

Dead Space™ 2
Shared: Shooter · Horror · Action

Aliens: Colonial Marines Collection
Shared: Action · Aliens · Shooter

STAR WARS™ Battlefront II (Classic, 2005)
Shared: Action · Shooter · Space

ARC Raiders
Shared: Shooter · Third-Person Shooter · Sci-fi

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

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

Call of Duty®
Shared: Shooter · Action · Military

Warframe
Shared: Action · Third-Person Shooter · Online Co-Op

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

Arma 3
Shared: Action · Shooter · Military

Starship Troopers: Extermination
Shared: Action · Sci-fi · Aliens

Insurgency: Sandstorm
Shared: Shooter · Action · Realistic

Tom Clancy's Ghost Recon® Breakpoint
Shared: Shooter · Action · Third-Person Shooter

EARTH DEFENSE FORCE 5
Shared: Action · Shooter · Third-Person Shooter

Resident Evil 6
Shared: Action · Horror · Third-Person Shooter

Aliens vs. Predator™
Shared: Action · Aliens · Shooter

Squad
Shared: Shooter · Realistic · Military