Games like DEFENDUN : Hero Defense
Games like DEFENDUN : Hero Defense include Plants vs. Zombies GOTY Edition, Kingdom Rush Frontiers - Tower Defense, Bloons TD 6, Kingdom Rush - Tower Defense, and Papers, Please. We matched them by the tags players give DEFENDUN : Hero Defense on Steam (Pixel Graphics, Tower Defense, Singleplayer, Indie, and 2D): closest matches first, and among equally close ones the better-known games.

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

Kingdom Rush Frontiers - Tower Defense
Shared: Tower Defense · Singleplayer · 2D

Bloons TD 6
Shared: Tower Defense · Singleplayer · Strategy

Kingdom Rush - Tower Defense
Shared: Tower Defense · Singleplayer · 2D

Papers, Please
Shared: Pixel Graphics · Indie · Singleplayer

Kingdom Rush Origins - Tower Defense
Shared: Tower Defense · Singleplayer · 2D

OneShot
Shared: Pixel Graphics · Indie · Cute

Vampire Survivors
Shared: Pixel Graphics · 2D · Indie

The Escapists
Shared: Pixel Graphics · Singleplayer · 2D

Kingdom Rush 5: Alliance TD
Shared: Tower Defense · Singleplayer · 2D

Unpacking
Shared: Pixel Graphics · Cute · Casual

Baba Is You
Shared: Indie · Singleplayer · Pixel Graphics

Game Dev Tycoon
Shared: Indie · Singleplayer · Casual

Relic Guardian - Tower Defense
Shared: Tower Defense · Pixel Graphics · 2D

Dungeon Warfare
Shared: Tower Defense · Pixel Graphics · Indie

The Binding of Isaac: Rebirth
Shared: Indie · Pixel Graphics · Singleplayer

Balatro
Shared: Singleplayer · Pixel Graphics · Strategy

Plague Inc: Evolved
Shared: Indie · Singleplayer · Strategy

911 Operator
Shared: Singleplayer · Indie · Strategy

Undertale
Shared: Pixel Graphics · Singleplayer · Indie

Stardew Valley
Shared: Pixel Graphics · Indie · Simulation

Rhythm Doctor
Shared: Pixel Graphics · Indie · Singleplayer

Celeste
Shared: Pixel Graphics · Indie · Singleplayer

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