Games like Too Many Zombies!
Games like Too Many Zombies! include Left 4 Dead 2, The Last of Us™ Part I, ARC Raiders, DayZ, and Bit Blaster XL. We matched them by the tags players give Too Many Zombies! on Steam (Twin Stick Shooter, Shoot 'Em Up, PvE, Shooter, and Action-Adventure): closest matches first, and among equally close ones the better-known games.

Left 4 Dead 2
Shared: Shooter · Zombies · Action

The Last of Us™ Part I
Shared: Post-apocalyptic · Action-Adventure · Shooter

ARC Raiders
Shared: PvE · Shooter · Post-apocalyptic

DayZ
Shared: Shooter · Post-apocalyptic · Zombies

Bit Blaster XL
Shared: Shoot 'Em Up · Shooter · 2D

Zombotron
Shared: 2D · Action · Shooter

Days Gone
Shared: Post-apocalyptic · Action-Adventure · Zombies

Cyberhunt
Shared: Shoot 'Em Up · Twin Stick Shooter · Action

HELLDIVERS™ 2
Shared: PvE · Shooter · Action

REMNANT II®
Shared: Shooter · Action · Action-Adventure

Broforce
Shared: 2D · Action · Shooter

PUBG: BATTLEGROUNDS
Shared: Shooter · Survival · Action

Guns, Gore and Cannoli 2
Shared: 2D · Shoot 'Em Up · Action

Beat Hazard
Shared: Twin Stick Shooter · Shoot 'Em Up · 2D

Warhammer 40,000: Space Marine 2
Shared: PvE · Action · Action-Adventure

Insect Swarm
Shared: Shoot 'Em Up · Shooter · Twin Stick Shooter

The Final Station
Shared: Post-apocalyptic · 2D · Survival

Stick Fight: The Game
Shared: Action · 2D · Casual

SurrounDead
Shared: Post-apocalyptic · Shooter · Zombies

World War Z
Shared: Shooter · PvE · Zombies

Left 4 Dead
Shared: Shooter · Zombies · Action

Planes, Bullets and Vodka
Shared: Shoot 'Em Up · Shooter · Action

Killing Floor 2
Shared: Shooter · Post-apocalyptic · Zombies

Far Cry® 6
Shared: Shooter · Action-Adventure · Action