Games like Zoul Dungeon
Games like Zoul Dungeon include Creeper World 3: Arc Eternal, Plants vs. Zombies GOTY Edition, The Escapists, Bloons TD 6, and Kingdom Rush Frontiers - Tower Defense. We matched them by the tags players give Zoul Dungeon on Steam (Strategy, RTS, Tower Defense, Singleplayer, and Mystery Dungeon): closest matches first, and among equally close ones the better-known games.

Creeper World 3: Arc Eternal
Shared: Strategy · Tower Defense · RTS

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

The Escapists
Shared: Strategy · Singleplayer · Pixel Graphics

Bloons TD 6
Shared: Strategy · Tower Defense · Singleplayer

Kingdom Rush Frontiers - Tower Defense
Shared: Strategy · Tower Defense · Singleplayer

Kingdom Rush - Tower Defense
Shared: Strategy · Tower Defense · Singleplayer

Dungeon Warfare
Shared: Strategy · Tower Defense · Singleplayer

Kingdom Rush 5: Alliance TD
Shared: Strategy · Tower Defense · Singleplayer

Infested Planet
Shared: Strategy · Tower Defense · RTS

GemCraft - Chasing Shadows
Shared: Strategy · Tower Defense · Singleplayer

Door Kickers
Shared: Strategy · Singleplayer · Top-Down

Kingdom Rush Origins - Tower Defense
Shared: Strategy · Tower Defense · Singleplayer

Total War: WARHAMMER II
Shared: Strategy · RTS · Singleplayer

Mindustry
Shared: Tower Defense · RTS · Strategy

Rusted Warfare - RTS
Shared: Strategy · RTS · 2D

Particle Fleet: Emergence
Shared: Strategy · RTS · Indie

Papers, Please
Shared: Singleplayer · Pixel Graphics · Indie

The Escapists 2
Shared: Strategy · Pixel Graphics · 2D

GemCraft - Frostborn Wrath
Shared: Tower Defense · RTS · Strategy

Plague Inc: Evolved
Shared: Strategy · Singleplayer · Simulation

Age of Mythology: Retold
Shared: Strategy · RTS · Singleplayer

Rise to Ruins
Shared: Tower Defense · Strategy · Pixel Graphics

Creeper World: Anniversary Edition
Shared: Strategy · Tower Defense · RTS

Kingdom Rush Vengeance - Tower Defense
Shared: Strategy · Tower Defense · Singleplayer