Games like Shadow Warrior Classic (1997)
Games like Shadow Warrior Classic (1997) include Half-Life, DOOM + DOOM II, Quake, DOOM 64, and DOOM. We matched them by the tags players give Shadow Warrior Classic (1997) on Steam (FPS, Classic, Free to Play, Action, and Retro): closest matches first, and among equally close ones the better-known games.

Half-Life
Shared: FPS · Classic · Singleplayer

DOOM + DOOM II
Shared: FPS · Classic · Action

Quake
Shared: FPS · Classic · Action

DOOM 64
Shared: FPS · Classic · Action

DOOM
Shared: FPS · Action · Gore

Duke Nukem 3D: 20th Anniversary World Tour
Shared: FPS · Classic · Action

Call of Duty®: Warzone™
Shared: FPS · Free to Play · Action

DOOM Eternal
Shared: FPS · Action · Gore

Halo Infinite
Shared: FPS · Free to Play · Action

Counter-Strike
Shared: FPS · Action · Classic

Quake II
Shared: FPS · Classic · Action

Quake II RTX
Shared: FPS · Free to Play · Action

Half-Life 2
Shared: FPS · Classic · Action

Shadow Warrior Classic Redux
Shared: FPS · Classic · Action

Call of Duty®
Shared: FPS · Action · Singleplayer

Warhammer 40,000: Boltgun
Shared: FPS · Retro · Action

Half-Life: Opposing Force
Shared: FPS · Classic · Action

Apex Legends™
Shared: Free to Play · FPS · Action

DUSK
Shared: FPS · Retro · Shooter

Delta Force
Shared: FPS · Free to Play · Singleplayer

Black Mesa
Shared: FPS · Action · Classic

Serious Sam 4
Shared: FPS · Action · Gore

Wolfenstein II: The New Colossus
Shared: FPS · Action · Gore

Wolfenstein 3D
Shared: FPS · Retro · Action