castle idler
castle idler is a short, relaxing idle tower defense game with no waves. idly upgrade towers, collect coins, and unlock a vast skill tree to defend your castle from a slime invasion.

Description

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

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

  • explore the prestige skill tree: unlock permanent, game-changing abilities that make your defenses exponentially stronger

wishlist the full game on Steam:

https://store.steampowered.com/app/4082900/castle_idler

(if the demo isn't working on your browser, you can also play the demo on Steam)

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About

Developersoyboygames studio
Number of plays100,000+
Release date10 Oct, 2025
Last updated13 Nov, 2025
Game engineUnity
Maturity ratingAll ages

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