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Zero Stress King: Idle Defense
A short relaxing incremental game disguised as a tower defense, but enemies can’t reach your walls. Thanks to lava.

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Features
Languages:
Interface Full Audio Subtitles
English ✔ ✔
French ✔ ✔
Italian ✔ ✔
German ✔ ✔
Spanish - Spain ✔ ✔
Japanese ✔ ✔
Korean ✔ ✔
Polish ✔ ✔
Portuguese - Brazil ✔ ✔
Russian ✔ ✔
Simplified Chinese ✔ ✔
Turkish ✔ ✔
Greek ✔ ✔
Thai ✔ ✔
Portuguese - Portugal ✔ ✔
Spanish - Latin America ✔ ✔
Traditional Chinese ✔ ✔
Danish ✔ ✔
Vietnamese ✔ ✔
See all 19 supported languages
Includes 12 Steam Achievements
View
all 12
Awards

Check out the entire Synthetic Domain collection on Steam
Zero Stress King: Idle Defense editions

Buy Zero Stress King: Idle Defense

$4.99
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Buy Zero Stress King Summer Vacation BUNDLE (?)

Includes 2 items: Zero Stress King: Idle Defense, Zero Stress King: Beach Episode (Supporter Pack)

Bundle info
-15%
$6.78
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Buy Captain Whiskers x Zero Stress King BUNDLE (?)

Includes 2 items: Zero Stress King: Idle Defense, Captain Whiskers: Incremental Seas

Bundle info
-10%
$9.88
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Buy Incremental Mega Madness 2026 BUNDLE (?)

Includes 11 items: Slots & Diapers, MMO98, Fishing Inc, Galactic Overthrow, The Last Cat in the Universe, Pupple Pop, Sporbs, Zero Stress King: Idle Defense, Slime Must Grow, Goblin Buster, Tiny Biomes: Cozy IdleShow less… Show more

Bundle info
-20%
$50.29
Add to Cart
See all 57 bundles.
 

Reviews

“I like to do the work to get to a point where I don't have to do the work and all of a sudden we make a ridiculous amount of money.”
Dex

“Today we're going to watch a bunch of idiots run straight into lava for hours.”
DangerouslyFunny

“I had a great time. That was amazing.”
RealCivilEngineer

About This Game

Enemies constantly run toward your walls. You buy defenders, upgrade production, and watch the waves grow.

But they can’t reach you. There is a river of lava at the end. Every enemy falls into it. Every time.

Your conquest map is your skill tree

Zero stress gameplay. 

No losing.  No pressure.  No "restart the level" moments. Just numbers going up and enemies running.

Be the Zero Stress King

This is a tower defense where you already won. Sit back, relax, and enjoy the lava.

System Requirements

Windows
macOS
    Minimum:
    • Requires a 64-bit processor and operating system
    • OS: Win 10
    • Processor: exists
    • Memory: 4 GB RAM
    • Graphics: not really
    • Sound Card: nope
    Recommended:
    • Requires a 64-bit processor and operating system
    Minimum:
      Recommended:
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      What Curators Say

      29 Curators have reviewed this product. Click here to see them.
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