Games like Water City
Games like Water City include Orcs Must Die! 3, Bloons TD 6, Orcs Must Die!, Orcs Must Die! 2, and Dungeon Defenders. We matched them by the tags players give Water City on Steam (Strategy, Tower Defense, Survival, Action, and Singleplayer): closest matches first, and among equally close ones the better-known games.

Orcs Must Die! 3
Shared: Tower Defense · Strategy · Action

Bloons TD 6
Shared: Strategy · Tower Defense · Singleplayer

Orcs Must Die!
Shared: Tower Defense · Strategy · Action

Orcs Must Die! 2
Shared: Tower Defense · Strategy · Action

Dungeon Defenders
Shared: Tower Defense · Strategy · Singleplayer

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

Totally Accurate Battle Simulator
Shared: Strategy · Singleplayer · Funny

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

Mount & Blade II: Bannerlord
Shared: Strategy · Singleplayer · Action

Black Myth: Wukong
Shared: Action · Combat · Singleplayer

PUBG: BATTLEGROUNDS
Shared: Survival · Action · Strategy

Orcs Must Die! Deathtrap
Shared: Tower Defense · Strategy · Action

Bloons TD 5
Shared: Strategy · Tower Defense · Action

God of War
Shared: Action · Singleplayer · Combat

Thronefall
Shared: Strategy · Tower Defense · Action

Sanctum 2
Shared: Tower Defense · Strategy · Action

Resident Evil 4
Shared: Action · Singleplayer · Survival

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

This War of Mine
Shared: Survival · Strategy · Singleplayer

Crimson Desert Enhanced
Shared: Action · Singleplayer · Combat

Warhammer 40,000: Space Marine 2
Shared: Action · Third-Person Shooter · Singleplayer

Wuthering Waves
Shared: Action · Combat · 3D

Dungeon Defenders: Awakened
Shared: Tower Defense · Strategy · Singleplayer

The Escapists
Shared: Strategy · Singleplayer · Action