Games like Test Subject
Games like Test Subject include Judgment, Half-Life 2, Half-Life, Atomic Heart, and Half-Life: Opposing Force. We matched them by the tags players give Test Subject on Steam (Action, Adventure, 3D Fighter, Action-Adventure, and Beat 'em up): closest matches first, and among equally close ones the better-known games.
Judgment
Shared: Action · Adventure · Action-Adventure
Half-Life 2
Shared: Action · FPS · Adventure
Half-Life
Shared: FPS · Action · 1990's
Atomic Heart
Shared: Adventure · Action · FPS
Half-Life: Opposing Force
Shared: Action · FPS · Adventure
Black Mesa
Shared: Action · FPS · First-Person
Half-Life: Blue Shift
Shared: Action · FPS · Adventure
BioShock Infinite
Shared: Action · FPS · Adventure
Far Cry® 6
Shared: Action · Action-Adventure · FPS
Demon Slayer -Kimetsu no Yaiba- The Hinokami Chronicles
Shared: Action · 3D Fighter · Adventure
Warhammer 40,000: Space Marine 2
Shared: Action · Adventure · Action-Adventure
Lost Judgment
Shared: Action · Adventure · Action-Adventure
Resident Evil Requiem
Shared: Action · FPS · Action-Adventure
Starship Troopers: Extermination
Shared: Action · FPS · First-Person
High On Life
Shared: Adventure · FPS · Action-Adventure
Necromunda: Hired Gun
Shared: Action · Adventure · FPS
VLADiK BRUTAL
Shared: Action · FPS · Adventure
Black Myth: Wukong
Shared: Action · Action-Adventure · Adventure
Far Cry 3
Shared: Action · Adventure · FPS
Far Cry® 5
Shared: Action-Adventure · FPS · Action
Five Nights at Freddy's: Secret of the Mimic
Shared: Adventure · Action · First-Person
High On Life 2
Shared: Action-Adventure · Action · FPS
Halo Infinite
Shared: Action · FPS · First-Person
STAR WARS Jedi: Survivor™
Shared: Action · Adventure · Action-Adventure