Games like Tower Defense: Last Castle
Games like Tower Defense: Last Castle include Kingdom Rush - Tower Defense, Kingdom Two Crowns, Orcs Must Die!, Kingdom Rush Frontiers - Tower Defense, and GemCraft - Chasing Shadows. We matched them by the tags players give Tower Defense: Last Castle on Steam (Tower Defense, Wargame, 2.5D, Fantasy, and Singleplayer): closest matches first, and among equally close ones the better-known games.

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

Kingdom Two Crowns
Shared: Tower Defense · Singleplayer · Base Building

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

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

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

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

Bloons TD 6
Shared: Tower Defense · Singleplayer · Casual

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

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

Thronefall
Shared: Tower Defense · Action · Base Building

Kingdom Rush 6: Genesis TD
Shared: Tower Defense · Fantasy · Action

Taur
Shared: Tower Defense · Base Building · Action

Border Pioneer
Shared: Tower Defense · Base Building · Action

CastleStorm
Shared: Tower Defense · Indie · Fantasy

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

The Riftbreaker
Shared: Tower Defense · Base Building · Singleplayer

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

Warpips
Shared: Tower Defense · Singleplayer · 2.5D

Rogue Tower
Shared: Tower Defense · Casual · Base Building

Bloons TD 5
Shared: Tower Defense · Action · Singleplayer

A Dance of Fire and Ice
Shared: Singleplayer · Indie · Fantasy

Warstone TD
Shared: Tower Defense · Fantasy · Indie

Prime World: Defenders
Shared: Tower Defense · Singleplayer · Fantasy

Crimson Desert Enhanced
Shared: Singleplayer · Action · Fantasy