Games like Room 54 - Horde Survival
Games like Room 54 - Horde Survival include Ready or Not, Left 4 Dead 2, Resident Evil Requiem, Call of Duty®, and Apex Legends™. We matched them by the tags players give Room 54 - Horde Survival on Steam (Action, 3D Fighter, Shooter, FPS, and 3D): closest matches first, and among equally close ones the better-known games.

Ready or Not
Shared: Shooter · FPS · Realistic

Left 4 Dead 2
Shared: FPS · Shooter · Action

Resident Evil Requiem
Shared: Action · FPS · Horror

Call of Duty®
Shared: FPS · Shooter · Action

Apex Legends™
Shared: FPS · Shooter · Action

Enlisted
Shared: Action · FPS · Shooter

Halo Infinite
Shared: FPS · Action · Shooter

Aimlabs
Shared: FPS · Shooter · Action

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

Half-Life 2
Shared: Action · FPS · Shooter

DOOM
Shared: Action · FPS · Shooter

Black Mesa
Shared: Action · FPS · Shooter

Battlefield™ 2042
Shared: FPS · Shooter · Action

Call of Duty®: Modern Warfare® III
Shared: Action · Shooter · FPS

Paladins®
Shared: Action · FPS · Shooter

Delta Force
Shared: FPS · Shooter · Action

THE FINALS
Shared: FPS · Shooter · Action

Arma 3
Shared: Action · Shooter · First-Person

BioShock Infinite
Shared: Action · Shooter · FPS

Half-Life: Alyx
Shared: FPS · Shooter · Action

Call of Duty®: Warzone™
Shared: FPS · Action · Shooter

Killing Floor 3
Shared: FPS · Shooter · First-Person

Left 4 Dead
Shared: Action · FPS · Shooter

Bodycam
Shared: FPS · Shooter · Realistic