Games like Castle survival
Games like Castle survival include Mount & Blade II: Bannerlord, Kingdom Two Crowns, Kingdom Rush - Tower Defense, Kingdom Rush 5: Alliance TD, and Plants vs. Zombies GOTY Edition. We matched them by the tags players give Castle survival on Steam (Indie, Medieval, Tower Defense, Side Scroller, and Strategy): closest matches first, and among equally close ones the better-known games.

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

Kingdom Two Crowns
Shared: Tower Defense · Medieval · Singleplayer

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

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

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

Bloons TD 6
Shared: Tower Defense · Strategy · Singleplayer

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

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

Thronefall
Shared: Tower Defense · Medieval · Strategy

Banished
Shared: Indie · Strategy · Medieval

Creeper World 3: Arc Eternal
Shared: Indie · Tower Defense · Strategy

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

Defense Grid: The Awakening
Shared: Tower Defense · Indie · Strategy

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

Dungeon Warfare
Shared: Indie · Tower Defense · Strategy

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

HoloParade
Shared: Tower Defense · Strategy · Side Scroller

Plague Inc: Evolved
Shared: Indie · Strategy · Singleplayer

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

Grim Nights
Shared: Tower Defense · Strategy · Side Scroller

Reigns
Shared: Medieval · Indie · Singleplayer

Mount & Blade: Warband
Shared: Medieval · Strategy · Singleplayer

Tavern Master
Shared: Medieval · Indie · Strategy

Kingdom Rush 6: Genesis TD
Shared: Tower Defense · Strategy · Medieval