Games like The Undying Plague
Games like The Undying Plague include Deadlight, Left 4 Dead 2, Nation Red, Resident Evil 3, and Skul: The Hero Slayer. We matched them by the tags players give The Undying Plague on Steam (Indie, Action, and Zombies): closest matches first, and among equally close ones the better-known games.

Deadlight
Shared: Zombies · Action · Indie

Left 4 Dead 2
Shared: Zombies · Action

Nation Red
Shared: Action · Indie · Zombies

Resident Evil 3
Shared: Action · Zombies

Skul: The Hero Slayer
Shared: Indie · Action

Daymare: 1998
Shared: Zombies · Action · Indie

Zombie Night Terror
Shared: Zombies · Indie · Action

Dead Bits
Shared: Indie · Action · Zombies

No More Room in Hell 2
Shared: Zombies · Action · Indie

Dead Pixels
Shared: Action · Zombies · Indie

Splatter - Zombiecalypse Now
Shared: Action · Indie · Zombies

CastleMiner Z
Shared: Zombies · Action · Indie

Zombotron
Shared: Action · Indie · Zombies

Hotline Miami
Shared: Action · Indie

Death Road to Canada
Shared: Zombies · Action · Indie

Earn to Die 2
Shared: Action · Zombies · Indie

Hades
Shared: Indie · Action

Resident Evil 6
Shared: Action · Zombies

Ben and Ed
Shared: Action · Zombies · Indie

Call of Duty®: Black Ops III
Shared: Zombies · Action

Dead Effect 2
Shared: Action · Zombies · Indie

My Friend Pedro
Shared: Indie · Action

Dead Effect
Shared: Zombies · Action · Indie

Resident Evil 4
Shared: Action · Zombies