Games like Who Is Zombie
Games like Who Is Zombie include Project Zomboid, Days Gone, Quarantine Zone: The Last Check, The Last of Us™ Part I, and The Walking Dead: A New Frontier. We matched them by the tags players give Who Is Zombie on Steam (Zombies, Post-apocalyptic, Immersive Sim, Singleplayer, and Survival): closest matches first, and among equally close ones the better-known games.

Project Zomboid
Shared: Zombies · Survival · Post-apocalyptic

Days Gone
Shared: Zombies · Singleplayer · Post-apocalyptic

Quarantine Zone: The Last Check
Shared: Zombies · Post-apocalyptic · Singleplayer

The Last of Us™ Part I
Shared: Post-apocalyptic · Zombies · Singleplayer

The Walking Dead: A New Frontier
Shared: Zombies · Post-apocalyptic · Singleplayer

Plague Inc: Evolved
Shared: Zombies · Singleplayer · Simulation

The Walking Dead: The Final Season
Shared: Zombies · Singleplayer · Post-apocalyptic

This War of Mine
Shared: Survival · Singleplayer · Post-apocalyptic

Undertale
Shared: Singleplayer · Multiple Endings · Choices Matter

The Walking Dead
Shared: Zombies · Singleplayer · Story Rich

7 Days to Die
Shared: Zombies · Survival · Post-apocalyptic

The Final Station
Shared: Post-apocalyptic · Survival · Zombies

Infection Free Zone
Shared: Post-apocalyptic · Zombies · Survival

SurrounDead
Shared: Zombies · Post-apocalyptic · Survival

Plants vs. Zombies GOTY Edition
Shared: Zombies · Singleplayer · 2D

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

SKYHILL
Shared: Survival · Post-apocalyptic · Zombies

DayZ
Shared: Zombies · Survival · Post-apocalyptic

State of Decay: YOSE
Shared: Zombies · Post-apocalyptic · Survival

Detroit: Become Human
Shared: Singleplayer · Choices Matter · Multiple Endings

Papers, Please
Shared: Singleplayer · Simulation · Multiple Endings

Deadlight
Shared: Zombies · Post-apocalyptic · Singleplayer

The Walking Dead: Season Two
Shared: Zombies · Singleplayer · Story Rich

Emily is Away <3
Shared: Choices Matter · Singleplayer · Simulation