Games like Return to Castle Wolfenstein
Games like Return to Castle Wolfenstein include Half-Life 2, DOOM, Wolfenstein: The Old Blood, Black Mesa, and Wolfenstein: The New Order. We matched them by the tags players give Return to Castle Wolfenstein on Steam (FPS, Action, Classic, World War II, and Supernatural): closest matches first, and among equally close ones the better-known games.

Half-Life 2
Shared: FPS · Action · Classic

DOOM
Shared: FPS · Action · Shooter

Wolfenstein: The Old Blood
Shared: FPS · Action · World War II

Black Mesa
Shared: FPS · Action · Classic

Wolfenstein: The New Order
Shared: FPS · Action · Alternate History

Half-Life
Shared: FPS · Classic · Action

Wolfenstein II: The New Colossus
Shared: FPS · Action · Alternate History

Call of Duty: World at War
Shared: FPS · World War II · Action

Left 4 Dead 2
Shared: FPS · Action · Shooter

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

BioShock Infinite
Shared: Action · FPS · Shooter

Call of Duty®
Shared: FPS · Action · Shooter

Halo: The Master Chief Collection
Shared: FPS · Classic · Action

Counter-Strike 2
Shared: FPS · Action · Shooter

DOOM 3
Shared: FPS · Action · Classic

Battlefield™ V
Shared: FPS · World War II · Singleplayer

Call of Duty®: WWII
Shared: FPS · World War II · Action

DOOM Eternal
Shared: FPS · Action · Shooter

METRO 2033 Redux
Shared: FPS · Action · Singleplayer

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

Quake
Shared: FPS · Action · Classic

F.E.A.R.
Shared: FPS · Action · Classic

BioShock™
Shared: FPS · Action · Singleplayer

Counter-Strike
Shared: FPS · Action · Classic