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.

Developer: Soy Boy Games.

Tags: Solo, Incremental, Tower Defense, Casual.

Steam reviews: Mostly Positive (79% of 161).

Price: $2.79 (was $3.99, 30% off).

Released 2026-04-24.

Last updated 2026-04-30.

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