Steam game

castle idler

castle idler is a short, relaxing incremental tower defense game with no waves. upgrade towers, collect coins, and unlock powerful prestige upgrades to defend your castle.

$3.59 April 24, 2026

By Soy Boy Games

Windows macOS
View on Steam
castle idler - Soy Boy Games. Popular. Released April 24, 2026
Screenshot of castle idler gameplay showing in-action mechanics Screenshot 2 of castle idler - additional gameplay view Screenshot 3 of castle idler - more gameplay footage Screenshot 4 of castle idler - final gameplay screenshot

Overview

About this game

castle idler is a short, relaxing incremental tower defense game with no waves. upgrade towers, collect coins, and unlock powerful prestige upgrades to defend your castle.

deploy a variety of towers along winding paths and continuously upgrade them. 

progress through increasingly difficult levels with trickier paths and tougher enemies.

unlock powerful prestige upgrades that make your defenses exponentially stronger.

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