Games like Atom Zombie Smasher
Games like Atom Zombie Smasher include Door Kickers 2: Task Force North, Door Kickers, Bloons TD 6, Plants vs. Zombies GOTY Edition, and Aliens: Dark Descent. We matched them by the tags players give Atom Zombie Smasher on Steam (Real Time Tactics, Zombies, Tower Defense, Procedural Generation, and Replay Value): closest matches first, and among equally close ones the better-known games.

Door Kickers 2: Task Force North
Shared: Real Time Tactics · Top-Down · Tactical

Door Kickers
Shared: Strategy · Top-Down · Tactical

Bloons TD 6
Shared: Tower Defense · Strategy · Sandbox

Plants vs. Zombies GOTY Edition
Shared: Zombies · Tower Defense · Strategy

Aliens: Dark Descent
Shared: Real Time Tactics · Strategy · RTS

Total War: WARHAMMER III
Shared: Real Time Tactics · Strategy · RTS

Plague Inc: Evolved
Shared: Strategy · Zombies · Replay Value

Creeper World 4
Shared: Real Time Tactics · Tower Defense · RTS

Call to Arms - Gates of Hell: Ostfront
Shared: Real Time Tactics · Strategy · RTS

Left 4 Dead 2
Shared: Zombies · Action · Co-op

Bloons TD 5
Shared: Tower Defense · Strategy · Action

Total War: THREE KINGDOMS
Shared: Strategy · Real Time Tactics · RTS

DG2: Defense Grid 2
Shared: Tower Defense · Strategy · Real Time Tactics

Men of War: Assault Squad 2
Shared: Strategy · RTS · Real Time Tactics

They Are Billions
Shared: Zombies · Tower Defense · Strategy

Mindustry
Shared: Tower Defense · Strategy · RTS

Shadow Tactics: Blades of the Shogun
Shared: Real Time Tactics · Strategy · Tactical

Total War: WARHAMMER II
Shared: Strategy · RTS · Real Time Tactics

Mud and Blood
Shared: Real Time Tactics · Sandbox · Strategy

Cepheus Protocol
Shared: Zombies · Sandbox · RTS

Infested Planet
Shared: Tower Defense · Strategy · RTS

Taur
Shared: Tower Defense · Strategy · Real Time Tactics

Stronghold Crusader: Definitive Edition
Shared: Real Time Tactics · Strategy · Tower Defense

Company of Heroes 3
Shared: Strategy · RTS · Real Time Tactics