Games like Ravenous Horde
Games like Ravenous Horde include Left 4 Dead 2, Killing Floor 2, PUBG: BATTLEGROUNDS, Left 4 Dead, and Back 4 Blood. We matched them by the tags players give Ravenous Horde on Steam (Zombies, FPS, Multiplayer, Gore, and Shooter): closest matches first, and among equally close ones the better-known games.

Left 4 Dead 2
Shared: Zombies · FPS · Co-op

Killing Floor 2
Shared: Zombies · Gore · Multiplayer

PUBG: BATTLEGROUNDS
Shared: FPS · Multiplayer · Shooter

Left 4 Dead
Shared: Zombies · Co-op · FPS

Back 4 Blood
Shared: Zombies · FPS · Multiplayer

DayZ
Shared: Zombies · Survival · Multiplayer

Killing Floor
Shared: Zombies · FPS · Co-op

Dying Light
Shared: Zombies · Survival Horror · Gore

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

Dead by Daylight
Shared: Multiplayer · Gore · Co-op

Apex Legends™
Shared: FPS · Multiplayer · Shooter

Call of Duty®
Shared: FPS · Multiplayer · Shooter

Ready or Not
Shared: FPS · Multiplayer · Shooter

No More Room in Hell 2
Shared: Zombies · Multiplayer · Co-op

Call of Duty: World at War
Shared: Zombies · FPS · Multiplayer

GTFO
Shared: FPS · Co-op · Multiplayer

Killing Floor 3
Shared: FPS · Co-op · Zombies

World War Z
Shared: Zombies · Multiplayer · Co-op

DOOM
Shared: FPS · Gore · Shooter

Blood and Bacon
Shared: Gore · Multiplayer · FPS

Zombie Army Trilogy
Shared: Zombies · Co-op · Multiplayer

Insurgency: Sandstorm
Shared: FPS · Shooter · Multiplayer

Pavlov
Shared: Multiplayer · FPS · Shooter

Bodycam
Shared: FPS · Multiplayer · Shooter