Games like Pleiades - A Subversion Saga Game
Games like Pleiades - A Subversion Saga Game include Atomic Heart, Half-Life 2, Black Mesa, Aliens vs. Predator™, and Half-Life: Opposing Force. We matched them by the tags players give Pleiades - A Subversion Saga Game on Steam (Action, Adventure, Sci-fi, Aliens, and Psychological Horror): closest matches first, and among equally close ones the better-known games.

Atomic Heart
Shared: Adventure · Action · FPS

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

Black Mesa
Shared: Action · Sci-fi · FPS

Aliens vs. Predator™
Shared: Action · Aliens · Sci-fi

Half-Life: Opposing Force
Shared: Action · Sci-fi · FPS

Half-Life: Blue Shift
Shared: Action · Sci-fi · FPS

Crysis Remastered
Shared: Action · Sci-fi · FPS

BioShock Infinite
Shared: Action · Adventure · FPS

Half-Life
Shared: Sci-fi · Action · FPS

PUBG: BATTLEGROUNDS
Shared: Action · FPS · Shooter

Half-Life: Alyx
Shared: FPS · Action · Sci-fi

Alien: Isolation
Shared: Sci-fi · Aliens · Action

Aliens: Colonial Marines Collection
Shared: Action · Aliens · Sci-fi

Alan Wake
Shared: Action · Adventure · Thriller

Apex Legends™
Shared: Action · FPS · Sci-fi

Ready or Not
Shared: FPS · Action · Psychological Horror

Crysis 2 - Maximum Edition
Shared: Action · Sci-fi · FPS

Dead Space
Shared: Sci-fi · Psychological Horror · Action

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

Far Cry 3
Shared: Action · Adventure · FPS

Halo: Campaign Evolved
Shared: Action · Sci-fi · FPS

Halo Infinite
Shared: Action · FPS · Sci-fi

Alan Wake's American Nightmare
Shared: Action · Adventure · Psychological Horror

High On Life
Shared: Adventure · Sci-fi · FPS