Games like REDDOOR
Games like REDDOOR include Left 4 Dead 2, DOOM, Killing Floor 2, Call of Duty®: Black Ops III, and Black Mesa. We matched them by the tags players give REDDOOR on Steam (FPS, First-Person, Zombies, Shooter, and 3D): closest matches first, and among equally close ones the better-known games.

Left 4 Dead 2
Shared: FPS · Zombies · Shooter

DOOM
Shared: FPS · Shooter · First-Person

Killing Floor 2
Shared: Zombies · FPS · Shooter

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

Black Mesa
Shared: FPS · First-Person · Shooter

METRO 2033 Redux
Shared: FPS · Post-apocalyptic · First-Person

DOOM Eternal
Shared: FPS · First-Person · Shooter

METRO Last Light Redux
Shared: FPS · Post-apocalyptic · First-Person

Left 4 Dead
Shared: Zombies · FPS · Shooter

Half-Life 2
Shared: FPS · First-Person · Shooter

Metro Exodus
Shared: FPS · Post-apocalyptic · First-Person

Half-Life: Alyx
Shared: FPS · Shooter · First-Person

Resident Evil Requiem
Shared: Zombies · FPS · First-Person

Ready or Not
Shared: FPS · Shooter · First-Person

DayZ
Shared: Zombies · Shooter · FPS

Back 4 Blood
Shared: Zombies · FPS · Shooter

DUSK
Shared: FPS · Shooter · Retro

Dying Light
Shared: Zombies · First-Person · Horror

Killing Floor
Shared: FPS · Zombies · Horror

BioShock Infinite
Shared: First-Person · FPS · Shooter

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

DOOM 3
Shared: FPS · Shooter · First-Person

S.T.A.L.K.E.R. 2: Heart of Chornobyl - Standard Edition
Shared: FPS · Post-apocalyptic · Shooter

Aimlabs
Shared: FPS · Shooter · First-Person