Games like Zombie Builder Defense 2
Games like Zombie Builder Defense 2 include Left 4 Dead 2, BALL x PIT, World War Z, Sky Force Reloaded, and Escape From Duckov. We matched them by the tags players give Zombie Builder Defense 2 on Steam (Action, Arcade, Shooter, Shoot 'Em Up, and Top-Down Shooter): closest matches first, and among equally close ones the better-known games.

Left 4 Dead 2
Shared: Shooter · Action · Zombies

BALL x PIT
Shared: Action · Arcade · Shoot 'Em Up

World War Z
Shared: Action · Zombies · Shooter

Sky Force Reloaded
Shared: Arcade · Shoot 'Em Up · Action

Escape From Duckov
Shared: Action · Shooter · Top-Down Shooter

HELLDIVERS™ 2
Shared: Action · Shooter · PvE

Counter-Strike 2
Shared: Shooter · Action · Multiplayer

Left 4 Dead
Shared: Action · Zombies · Shooter

Zombieville USA 3D
Shared: Action · Arcade · Shooter

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

7 Days to Die
Shared: Zombies · Post-apocalyptic · Base Building

Killing Floor 2
Shared: Zombies · Shooter · Action

DayZ
Shared: Shooter · Zombies · Post-apocalyptic

The Last Stand: Aftermath
Shared: Top-Down Shooter · Shooter · Zombies

Back 4 Blood
Shared: Shooter · Action · Zombies

Splatter - Zombiecalypse Now
Shared: Action · Top-Down Shooter · Top-Down

Revolution Ace
Shared: Action · Shoot 'Em Up · Shooter

Starship Troopers: Extermination
Shared: Action · Arcade · Shooter

PAYDAY 2
Shared: Action · Shooter · Co-op

Crimsonland
Shared: Action · Shooter · Top-Down

Halo: Spartan Assault
Shared: Action · Top-Down Shooter · Shooter

Resident Evil 5
Shared: Action · Zombies · Shooter

Resident Evil 6
Shared: Action · Zombies · Shooter

Team Fortress 2
Shared: Action · Shooter · Class-Based