castle idler demo on Steam

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castle idler demo

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.

Positive (22) - 95% of the 22 user reviews for this demo are positive.

Release Date:

Nov 3, 2025

Developer:

Soy Boy Games

Publisher:

Soy Boy Games

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Features

Steam Achievements

Languages:

	Interface	Full Audio	Subtitles
English	✔		✔
French	✔		✔
German	✔		✔
Spanish - Spain	✔		✔
Japanese	✔		✔
Portuguese - Brazil	✔		✔
Portuguese - Portugal	✔		✔
Russian	✔		✔
Simplified Chinese	✔		✔
Spanish - Latin America	✔		✔
Polish	✔		✔
Korean	✔		✔

See all 12 supported languages

Includes 9 Steam Achievements

first upgrade

first prestige

triple threat

ice tower unlocked

View
all 9

Title: castle idler demo
Genre: Casual, Strategy

Developer: Soy Boy Games

Publisher: Soy Boy Games

Release Date: Nov 3, 2025

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Reviews

“A fun little game!”
Real Civil Engineer (2.75M subs)

“A neat genre combination!”
ambiguousamphibian (1.6M subs)

About This Demo

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

System Requirements

Windows

macOS

Minimum:

Requires a 64-bit processor and operating system
OS: Windows 10
Processor: 2.7 GHz Dual Core
Memory: 4 GB RAM
Graphics: 512MB, OpenGL 3+
Storage: 200 MB available space

Recommended:

Requires a 64-bit processor and operating system

Minimum:

OS: Monterey
Processor: Apple M1
Memory: 4 MB RAM
Storage: 200 MB available space

Recommended:

What Curators Say

1 Curator has reviewed this product. Click here to see them.