Destroy the Demon Army
A purely placed idle battler: set up your squad, walk away, and let the demons delete themselves.
by Blueprint Core · 11 Jan, 2019 · PC (Windows)
The store page for Destroy the Demon Army is one sentence long, and the sentence admits everything: this is a purely placed game, the player can run it automatically without any or little operation, and the goal is to destroy all the Devils. Blueprint Core shipped it in January 2019, and it is the auto-battler strain of the idle genre at its most literal.
Set up your squad, walk away, and the demons delete themselves. The pitch is also the manual.
What the loop feels like
You place units before a fight, arranging the line-up so the durable ones stand in front and the damage dealers stand behind. Then the fight happens. Gold and materials appear whether or not you are watching, in exactly the quantities your configuration earned. That's Destroy the Demon Army.
The upgrades eat the gold. Base attack, defence and special attributes climb, and the wave that stalled you yesterday clears itself today, right up until a boss wall parks itself across the ladder and refuses to move until your stats outgrow it. That's Destroy the Demon Army.
The systems doing the work
Automated squad management is the one real decision surface: front-line durability balanced against back-line output, because waves bottleneck on high-health demon brutes when the line-up is lopsided. Passive resource accumulation funds the rest, with gold and materials flowing per wave and per boss tier. Stat scaling is the progression itself, flat multipliers on attack, defence and special attributes applied against escalating wave tiers, and the boss walls are the checkpoints where configuration briefly matters again.
Genre-standard advice applies in full: prioritise broad multipliers and economic upgrades over glass-cannon builds early, because there is no active play to rescue a bad setup once the fight starts.
Where it stumbles
Community verdicts are bleak, and earned. Steam reviews sit at Mostly Negative, driven by a loop that is purely passive with almost zero interaction, achievements reported broken or unobtainable, and difficulty settings that reportedly reset unexpectedly. There is no content beyond the wave ladder, no systems beyond the stat curve, and nothing that responds to your attention. Against anything with a pulse, from Cookie Clicker on up, it feels archaic: a text-and-number ticker charging a paid price for thin 2019-era content.
Playing it today
Destroy the Demon Army is on Steam for Windows, released January 2019. Our platform check found no mobile version. Honestly, almost any other auto-battler on this site does the same job better: start with Clickpocalypse II for charm or Idle Necromancer for structure, and keep this one for completists.
The verdict
The store page tells the truth, and the truth is not enough. Documented here so you do not have to find out yourself.
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