Games like PolyCore Defense
Games like PolyCore Defense include Bloons TD 6, Kingdom Rush Frontiers - Tower Defense, Kingdom Rush Origins - Tower Defense, Kingdom Rush Vengeance - Tower Defense, and Kingdom Rush - Tower Defense. We matched them by the tags players give PolyCore Defense on Steam (Tower Defense, Strategy, Singleplayer, Difficult, and Choices Matter): closest matches first, and among equally close ones the better-known games.

Bloons TD 6
Shared: Tower Defense · Strategy · Singleplayer

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

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

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

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

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

Bloons TD 5
Shared: Tower Defense · Strategy · Singleplayer

Thronefall
Shared: Tower Defense · Strategy · Action

Artisan TD
Shared: Tower Defense · Strategy · Difficult

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

Rock 'N' Roll Defense
Shared: Tower Defense · Strategy · Action

Rogue Tower
Shared: Tower Defense · Strategy · 3D

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

Tangy TD
Shared: Tower Defense · Strategy · Singleplayer

The Escapists
Shared: Strategy · Singleplayer · Difficult

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

Dungeon Defenders
Shared: Tower Defense · Singleplayer · Strategy

Aliens: Dark Descent
Shared: Strategy · Singleplayer · Action

Bee Island
Shared: Tower Defense · Strategy · Action

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

This War of Mine
Shared: Singleplayer · Strategy · Choices Matter

Infested Planet
Shared: Tower Defense · Strategy · Singleplayer

Spirits of the Hellements - TD
Shared: Tower Defense · Strategy · Singleplayer

Super Sanctum TD
Shared: Tower Defense · Strategy · Singleplayer