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Idle Geometry Defense

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Idle Geometry Defense screenshot 1
Idle Geometry Defense Trailer trailerWatch trailer on Steam ↗

Idle Geometry Defense

Urban Isotope · Published by Urban Isotope · Official site ↗

Positive — 82% positive (11 reviews)

Last updated 28 Sept 2026

Defend against endless waves of deadly red cubes in this futuristic idle tower defense game. Upgrade your towers, deploy mini-towers, speed up time, and rotate the battlefield in full 360°. Infinite levels. Infinite upgrades. No mercy.

DJCTQ l

£3.49

Lowest price we've ever recorded

View on Steam

Prices can lag the live Steam store — always confirm before buying.

Price history

4 Sept 2026Lowest: £3.49 · Highest: £3.496 Oct 2026

Indie, Simulation, Strategy · 2026 · More under £5 games

In Idle Geometry Defense, endlessly defend against waves of enemies while upgrading your defenses and manipulating the arena. Rotate the 360-degree battlefield to outmaneuver threats in this futuristic simulation.

About this game

Hold the line. Upgrade the future. Watch the cubes fall.

In Idle Geometry Defense, you’re the last geometric hope against a relentless swarm of hostile red cubes. Strategically build and upgrade your towers to tear through waves of enemies in a sleek, futuristic battlefield where every second counts and every kill fuels your rise.

Your towers are your weapon—and your obsession. Crank up their attack damage, stretch their range, increase their firing speed, boost their max HP, and accelerate their regeneration. And when that’s not enough? Deploy mini-towers, stacked with their own upgradable power, and turn the field into a fortress of unstoppable firepower.




Time is on your side—or not. Speed up the action up to 3x and let the chaos unfold. The waves never stop. The upgrades never end. The enemies keep coming: swarms of small red cubes, followed by towering bosses with massive health bars. Survive them all, and rack up the points.

Idle Geometry Defense is more than just a tower defense game—it's a clean-cut, 360-degree view of the apocalypse. Zoom in, rotate the battlefield, and survey your empire of destruction. Dark, minimal, and mechanical—this is tower defense stripped to its core, built for endless play and infinite upgrades.


Key Features:

  • Idle Tower Defense gameplay with deep upgrade paths

  • Boost tower attributes: Damage, Radius, Speed, Max HP, and Regen

  • Deploy and upgrade mini-towers for extra firepower

  • Fight off endless waves of enemies and massive boss cubes

  • Speed up time to 3x and watch the chaos unfold

  • Earn points with every kill

  • Unlimited levels and upgrades

  • Full 360° camera control with zoom functionality

  • Futuristic minimalist aesthetic

  • Incremental progression that never stops

You don’t beat the game. You become the game.

System Requirements

Will my PC run this? →

Minimum

Minimum:
  • Requires a 64-bit processor and operating system
  • OS: 10
  • Memory: 256 MB RAM
  • Storage: 256 MB available space

Recommended

Recommended:
  • Requires a 64-bit processor and operating system
  • OS: 11
  • Memory: 512 MB RAM
  • Storage: 512 MB available space

Supported Languages

English, Japanese, Korean, Russian, Simplified Chinese, Traditional Chinese

Latest news

  • Patch NotesOfficial

    100+ Tech Upgrades & New Features

    Tech Tree Expansion, Freeze Mode & Quality of Life FeaturesWe've just dropped a new update focusing on deep strategy and performance tweaks to make controlling the battlefield even smoother. Here is what's new in this build:Tech tree with 100+ upgradesWindowed mode toggleFreeze (Planning) mode for strategic planners4x speed toggle for extreme playersNew UI controls featuring Freeze (Planning Mode), Tech Tree, and 4x Speed toggle. New Tech Tree with upgrade paths for boosting tower damage, range, and survival stats. You can now toggle Windowed Mode directly in the Settings menu. Perfect for multitaskers who want to run Idle Geometry Defense alongside work, videos, or other apps without taking up the full screen. We are constantly working to improve Idle Geometry Defense, and we'd love to hear your thoughts on the new Tech Tree upgrades. Please take a moment to leave us a review on Steam, every single review helps us tremendously as an indie developer.
    Read full article on Community Announcements (UrbanIsotopeOfficial)
  • Patch NotesOfficial

    New Enemies, New Bug Patches

    Game now runs fully in the background, so you can do other things while watching your towers defend against the cubes.If you win, the game automatically goes to the next Level.If you lose, the game repeats automatically.We also added 5 new enemy units. Look out for the red light bikes and the yellow missile launchers, those pack a really powerful much if not managed early.Nasty nasty light bikesThese missile launcher minions never stop comingPlease take some time to write us a review. Any review good or bad is desperately needed.
    Read full article on Community Announcements (UrbanIsotope)

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