Games like Zombiemachia
Games like Zombiemachia include Left 4 Dead 2, Resident Evil Village, Killing Floor 2, Dying Light, and Resident Evil 7 Biohazard. We matched them by the tags players give Zombiemachia on Steam (Zombies, Indie, Gore, Violent, and FPS): closest matches first, and among equally close ones the better-known games.

Left 4 Dead 2
Shared: Zombies · FPS · Gore

Resident Evil Village
Shared: Survival Horror · Zombies · Horror

Killing Floor 2
Shared: Zombies · Gore · FPS

Dying Light
Shared: Zombies · Survival Horror · Horror

Resident Evil 7 Biohazard
Shared: Survival Horror · Horror · Gore

Resident Evil Requiem
Shared: Zombies · Survival Horror · Horror

Resident Evil 2
Shared: Zombies · Survival Horror · Gore

Back 4 Blood
Shared: Zombies · Gore · FPS

Killing Floor
Shared: Zombies · FPS · Horror

DOOM Eternal
Shared: Gore · FPS · Violent

Ready or Not
Shared: FPS · Shooter · Horror

METRO 2033 Redux
Shared: FPS · Post-apocalyptic · Horror

DOOM
Shared: Gore · FPS · Shooter

Trepang2
Shared: Gore · FPS · Violent

Metro Exodus
Shared: FPS · Post-apocalyptic · Horror

Dead by Daylight
Shared: Gore · Horror · Survival Horror

Resident Evil 4
Shared: Zombies · Horror · Survival Horror

Nightmare of Decay
Shared: Zombies · Horror · FPS

Outlast 2
Shared: Gore · Horror · Survival Horror

Outlast
Shared: Horror · Gore · Survival Horror

DayZ
Shared: Zombies · Post-apocalyptic · FPS

METRO Last Light Redux
Shared: FPS · Post-apocalyptic · Horror

Left 4 Dead
Shared: Zombies · FPS · Horror

Warhammer 40,000: Darktide
Shared: FPS · Gore · Violent