Games like Subway Invasion
Games like Subway Invasion include Half-Life 2, Black Mesa, BioShock Infinite, Counter-Strike 2, and Atomic Heart. We matched them by the tags players give Subway Invasion on Steam (Action, FPS, Adventure, Trains, and Sci-fi): closest matches first, and among equally close ones the better-known games.

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

Black Mesa
Shared: FPS · Action · Sci-fi

BioShock Infinite
Shared: Action · FPS · Shooter

Counter-Strike 2
Shared: FPS · Action · Shooter

Atomic Heart
Shared: Adventure · FPS · Action

Apex Legends™
Shared: FPS · Action · Shooter

Crysis Remastered
Shared: Action · FPS · Sci-fi

VLADiK BRUTAL
Shared: FPS · Action · Shooter

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

Ready or Not
Shared: FPS · Shooter · Action

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

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

Far Cry® 6
Shared: FPS · Action · Adventure

Far Cry® 5
Shared: FPS · Action-Adventure · Shooter

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

Halo Infinite
Shared: FPS · Action · Shooter

Aimlabs
Shared: FPS · Action · Shooter

Call of Duty®
Shared: FPS · Action · Shooter

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

Call of Duty®: Black Ops III
Shared: FPS · Action · Shooter

Far Cry 3
Shared: FPS · Action · Adventure

PUBG: BATTLEGROUNDS
Shared: FPS · Shooter · Action

Resident Evil Requiem
Shared: Action · FPS · Action-Adventure

Titanfall® 2
Shared: FPS · Action · Shooter