Games like Corridor Sigma
Games like Corridor Sigma include Counter-Strike 2, Titanfall® 2, DOOM, DOOM Eternal, and BioShock Infinite. We matched them by the tags players give Corridor Sigma on Steam (Action, Shooter, FPS, Exploration, and Shoot 'Em Up): closest matches first, and among equally close ones the better-known games.

Counter-Strike 2
Shared: Shooter · FPS · Action

Titanfall® 2
Shared: FPS · Shooter · Action

DOOM
Shared: Action · FPS · Shooter

DOOM Eternal
Shared: Action · FPS · Shooter

BioShock Infinite
Shared: Action · Shooter · FPS

Half-Life
Shared: FPS · Shooter · Action

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

Call of Duty®
Shared: FPS · Shooter · Action

Battlefield™ 2042
Shared: FPS · Shooter · Action

Counter-Strike
Shared: Action · FPS · Shooter

Half-Life 2
Shared: Action · FPS · Shooter

Black Mesa
Shared: Action · FPS · Shooter

RoboCop: Rogue City
Shared: Action · FPS · Shooter

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

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

Quake
Shared: Action · FPS · Shooter

Wolfenstein: The New Order
Shared: Action · FPS · Shooter

DOOM + DOOM II
Shared: FPS · Action · 1990's

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

Crysis 2 Remastered
Shared: Action · Shooter · FPS

Apex Legends™
Shared: FPS · Shooter · Action

Bright Memory: Infinite
Shared: Action · FPS · Shooter

CULTIC
Shared: Shooter · FPS · Action

Deep Rock Galactic
Shared: FPS · Shooter · Exploration