Games like King Towers
Games like King Towers include Plants vs. Zombies GOTY Edition, Kingdom Rush - Tower Defense, DELTARUNE, Undertale, and Bloons TD 6. We matched them by the tags players give King Towers on Steam (Casual, Tower Defense, Funny, Pixel Graphics, and RPG): closest matches first, and among equally close ones the better-known games.

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

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

DELTARUNE
Shared: Funny · Pixel Graphics · RPG

Undertale
Shared: Pixel Graphics · Funny · RPG

Bloons TD 6
Shared: Tower Defense · Strategy · Casual

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

There Is No Game: Wrong Dimension
Shared: Pixel Graphics · Funny · Casual

Knights of Pen and Paper +1 Edition
Shared: RPG · Pixel Graphics · Casual

Cookie Clicker
Shared: Casual · Pixel Graphics · Funny

Knights of Pen and Paper 2
Shared: RPG · Pixel Graphics · Strategy

DAVE THE DIVER
Shared: Casual · Pixel Graphics · Singleplayer

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

Touhou Mystia's Izakaya
Shared: Casual · Pixel Graphics · RPG

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

Town of Salem
Shared: Casual · Strategy · RPG

Relic Guardian - Tower Defense
Shared: Tower Defense · Pixel Graphics · Casual

Totally Accurate Battle Simulator
Shared: Funny · Strategy · Singleplayer

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

Bloons TD 5
Shared: Tower Defense · Casual · Strategy

South Park™: The Stick of Truth™
Shared: RPG · Funny · Comedy

Dude, Stop
Shared: Funny · Pixel Graphics · Casual

Rock of Ages
Shared: Tower Defense · Comedy · Strategy

Doom & Destiny
Shared: RPG · Comedy · Pixel Graphics

Rhythm Doctor
Shared: Pixel Graphics · Singleplayer · Funny