Idle Kingdom Defense
by STORMX · 2021
Command heroes and archer corps in large castle-defense battles, with rewards stacking up while the game is closed.
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At a glance
From the developer's own description, reviewed Sep 29, 2026. Suggest a correctionPlayer rating
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Games like Idle Kingdom Defense
Why these match →
Fortress Saga: Idle AFK RPGUpdatedAlso idle, fantasy, combat · Same active/idle balance (leans idle)
F Class Adventurer: AFK RPGUpdatedAlso idle, combat, fantasy · Same active/idle balance (leans idle)
Endless Frontier - RPGUpdatedAlso idle, fantasy, combat · Same active/idle balance (leans idle)
Tower Defense: Lazy ApocalypseUpdatedAlso tower defense, idle, combat · Same active/idle balance (leans idle)
Spirit Dungeons: LegacyAlso idle, fantasy, combat · Same active/idle balance (leans idle)
SlimewardAlso combat, fantasy, idle
Idle Kingdom Defense: common questions
Does Idle Kingdom Defense have offline progress?
Yes. Idle Kingdom Defense keeps producing while the game is closed, and you collect the progress when you come back.
Is Idle Kingdom Defense an idle game or an active one?
Leans idle: we rate it 75 on a scale where 0 means fully active and 100 means it plays itself. Checking in a few times a day is enough.
Is Idle Kingdom Defense still being updated?
Not recently. The most recent update we've seen was on Sep 16, 2025. That isn't a verdict on quality: many incrementals are complete as they are.
Is Idle Kingdom Defense free?
Idle Kingdom Defense is free to play, with optional in-game purchases.
Where can you play Idle Kingdom Defense?
Idle Kingdom Defense is available on mobile.
What games are like Idle Kingdom Defense?
Fortress Saga: Idle AFK RPG, F Class Adventurer: AFK RPG and Endless Frontier - RPG share the most with it. Fortress Saga: Idle AFK RPG: also idle, fantasy, combat. All games like Idle Kingdom Defense →